Accessories
Focus Adapter FA26-S...
High-precision adapter with linear tracking rods for precise travel of the focussing
encasement, adapted for large line sensor camera casings XL / XB / XC.
• Focussing range 30 mm, 1 turn of the focussing ring corresponds to 10 mm
• Locking screws for fixing the focus position
• M45x0.75 or M55x0.75 thread
• Assembly with extension rings, adapters to lens thread M39x1/26" or
V-groove adapters to adjust lenses at any rotation angle
FA5
Order Code
M45 x 0.75, female
40.5 ... 69.5 mm
A2
for macro lens inspec.x L5.6/105
3.7
Ø 50.5
Adapter M45 x 0.75 46 mm to AM43
L=20 mm
L=35 mm
The AM43-M45 accepts the V-groove
lens adapter M39x26G-AC43.
Order Code
The Adapter AC46-55 adds
17.5 mm to the optical tube length.
It accepts the AC46 V-groove of
the Inspec.x macro lenses.
AM43
M45x0.75
17.5
15 = length 15 mm
25 = length 25 mm
60 = length 60 mm
87 = length 87 mm
ZR55-...
15 = length 15 mm
25 = length 25 mm
60 = length 60 mm
L
L= length
Ø 58 h8
Ø47.5
L
L=length
Order Code
Ø58
AC43
ZR55 Extension Ring M55x0.75
M45x0.75
M45x0.75
Extension Ring M45x0.75
ZR-L
Order Code
ZR-L ...
Ø 58 f8
L
Lens Adapter V-Groove AC43 to M39x1/26"
Order Code
M39x26G-AC43-S L=1.5 mm
M39xG26-AC43
L=8.2 mm
M55x0.75
Dimensions FA26-S45
Dimensions FA26-S55
40.5
3
84
3
84
10
51
10
Ø 71.25 f8
72
8.5
Ø4.3
45
40
31.5
Ø4.3
M4
M3
90
80
10
0
10
31.5
40
45
8
90
69.5
40
23
6
M45x0.75
Ø4.3
45
40
31.5
40
23
9
8.5
20
8
6
8.5
40
23
Ø4.3
M4
M3
10
0
10
31.5
40
45
80
40
23
90
80
90
8.5
M55x0.75
8
8
44
44
M45x0.75
Ø 71.25 f8
72
M55x0.75
Order Code
AM43-M45-S
AM43-M45
AC46-55
L
M39x1/26’’
A1
Lens adapter 46 mm V-groove – M55 x 0.75
AC46
M45x0.75
length L=3.7 mm
Order Code
M55 x 0.75, female
51 ... 80 mm
Lens Adapters and Extension Rings M55x0.75
M39x1/26’’
Lens Adapters and Extension Rings M45x0.75
Lens Adapter M45x0.75 to M39x1/26 (Leica)
Order Code
M39-45
FA26-S55
attachment thread:
lenght (optical path):
M55x0.75
FA26-S45
attachment thread:
lenght (optical path):
M55x0.75
FA4
9
20
Focussing and Alignment Mechanism
Lens focussing, azimuth alignment and locking
C
A
B
Camerafamily-XL_ZK.indd • Page 37
C
B
C
F
A
D
E
D
F
Assembly and
adjustment tools:
see page 60
E
Linear tracking rods
Focussing ring,
range ±15 mm (1 turn = 10 mm)
Screws for locking the focussing encasement, Allen key 1.5
V-groove adapter M39x26G-AC43 for free alignment of the lens
angle of rotation, lens thread M39x1/26''
Aperture stop setting
Screw for locking the lens housing, hex Allen key 1.5
C
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•
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Connection Cables for Line Scan Cameras
Data / Control Cable
CAT6 cable for line scan cameras
with GigE VisionTM interface
Shielded CAT6 patch cable,
halogen-free, both sides with
RJ45 connectors for Gigabit Ethernet.
Order Code
CAT6.3
3m
CAT6.5
5m
CAT6.10 10 m
CAT6.20 20 m
Cable for External Synchronization
Power Supply
External synchronization cable
for cameras with GigE VisionTM
interface
Connectors:
Hirose plug HR10A, female 12-pin (camera side)
Phoenix 4 pin connector incl. terminal block
length
length
length
length
Order Code
SK9024.3 3 m length
SK9024.5 5 m length
DE
IEC320 3-pin 1.5 m cable,
10 A, 250 V AC
Order Code
PC150DE
PC150US
PC150UK
Other lengths on request.
Max. length = 100 m
Power cord for power supply
unit PS051515
US
Europe
USA / Canada
United Kingdom
UK
USB 3.0 Cable
for connecting a USB 3.0
line scan camera to a PC
External synchronization cable
for line scan cameras with
USB 3.0 interface
Connectors:
Camera: USB 3.0 plug, type μB, with lock screws
PC: USB 3.0 plug, type A
(also fits a USB 2.0 type A socket)
Connectors:
Hirose plug HR10A, female 6-pin (camera side)
Phoenix 4 pin connector incl. terminal block
Order Code
SK9020.3 3 m length (standard)
SK9020.5 5 m length
USB 3.0 Active Extension Cable,
length 10 m
Connectors:
1x socket USB 3.0 socket, type A,
1x plug Power in, 5 VDC,
1x plug USB3.0, type A (also fits a USB 2.0 type A
socket)
Order Code
USB3.EXT.AA10
Order Code
SK9026.3 3 m length
SK9026.5 5 m length
Other lengths on request.
Power Supply Unit
Combined synchronization
and power cable
for line scan cameras with
USB 3.0 interface and additional power supply
• Output:
+5 V DC/2.5 A
+15 V DC/0.5 A
-15 V DC/0.3 A
Connectors:
Hirose plug HR10A, female 6-pin (camera side)
Lumberg SV60 connector, male 6-pin
(power supply)
Phoenix 4 pin connector incl. terminal block
(external synchronization signals)
Cable length 1 m
Output connector Lumberg KV60
(female 6-pin)
• Input:
100−240 VAC, 0.8 A, 50/60 Hz
Input connector IEC 320 (3-pin)
Order Code
SK9016.1.5 1.5 m length
USB 3.0 Active Extension Cable,
hybrid (copper/fiber), plug type A,
socket type A, locking screws.
The cable is supplied with energy
by a second USB type A plug.
• External power supply
is only required for models with
a power consumption > 2.5 W.
Order Code
USB3.EXT.A2A20 20 m length
USB3.EXT.A2A30 30 m length
USB3.EXT.A2A50 50 m length
Cable for supply power
Control cable SK9018... for line
scan cameras with CameraLink
interface
26-pin shielded cable, both ends
with mini-ribbon connector
(male 26-pin)
for line scan cameras with
• Gigabit Ethernet-,
• GigE Vision™-,
• USB 3.0- , and
• CameraLink interface
• External synchronisation
is provided via PC interface
(CameraLink grabber board).
Shielded cable with connector Lumberg SV60
(male 6-pin) and Hirose HR10A (female 6-pin)
Order Code
SK9015.1.5 MF
Order Code
SK9018.5-MM
MM = both ends (male)
3 = 3 m cable length
5 = 5 m (standard cable length)
x = length of choice
max. length =10 m
LVDS
Connection cable SK9019...
for line scan cameras with
LVDS interface‚ camera series
XSD, DPD, DPT, DJRC, etc.
Shielded 36-pin cable for camera
and video signal. Standard: 3 m length with both
ends 36-pin Centronics connector (female).
Order Code
SK9019.3 FF
CAB0515.10
MF = connector
(male /female)
1.5 = 1.5 m length
0.2 = 0.2 m
extension cable for
SK9015.0.2-MF, 10 m length
• External synchronisation and
• Power supply
are provided via PC interface.
Order Code
SK9193D
SK9192D
SK9190D
Cable for supply power
FF= connector both ends (female)
F = connector one end (female)
3 = 3 m (standard)
5 =5m
x = length of choice
max. length = 20 m
Analog
Order Code
PS051515
Connection cable SK9017 for line
for LVDS Merger Box
Shielded cable with
Lumberg connector SV60
(male 6-pin) and
sub-D connector (female 9-pin)
Order Code
SK9023.1.5
• External synchronisation and
• Power supply
are provided via PC interface.
1.5 = 1.5 m length (standard)
Cables_ZK.indd • Page 38
scan cameras with analog interface,
camera series SD, JRI, JRC, etc.
Cable set of shielded control and
coaxial cables. Control cable with
15-pin sub-D connectors.
Order Code
SK9017.3
3 = 3 m (standard)
5 =5 m
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•
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•
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Formulae for Lens Selection
After selecting a line scan camera, a lens appropriate to the task must be
chosen and the number and size of extension rings determined.
The most suitable lens extension and appropriate depth of focus can be
calculated exactly.
Step 5: Resolution. A large F-number causes a reduction of resolution
because of diffraction. The resolution of the imaging has to be controlled
(F11). For magnifications E> 6, an effective F-number K’ must be included
instead of K (F9).
The resolution 'ymin must not exceed the pixel pitch of the line sensor.
Figure 1:
Schematic depiction of the
imaging system and definition
of variables used
Calculation is performed in the following 5 steps:
Step 1: Magnification. For a given measuring range L and a selected line
scan camera with sensor length S, the magnification E can be calculated,
see (F2).
Step 2: Focal length. With magnification and the given measuring distance
OO’ then the focal length f of a suitable lens can be calculated, see (F3).
Conversely, for a given lens focal length f and magnification E, the required
measuring distance OO’ can be calculated, (F6).
Step 3: Lens extension and tubes length. To achieve a sharply focussed
image, the lens must be a defined distance from the line sensor.
For CCTV lenses and photo lenses, the lens extension 's is calculated (F4)
and set using the focussing mechanism itself.
For scan and macro lenses, the lens extension 's is set using an external
focussing mechanism. Additional extension rings are required for extremely
large magnifications.
A required tube length LT is calculated from (F4) and (F5) and implemented
with extension rings and – in the case of scan and macro lenses – with a
focus adapter, as well.
Step 4: Depth of focus. For imaging objects of a certain thickness then
the depth of focus 2z has to be determined. This must be large enough to
allow fully focussed imaging of the whole measured object (F8).
E=
=
a’
a
.
Example: Measuring region L = 290 mm, sensor length S = 28.7 mm:
E = S/L = 28.7/290 = 1/10.1
OO’
1EE + 2
Example:
or for E 1/10 approximately
f=
OO’
1/E + 2
F4: Lens extension 's’
Magnification E = 1/10.1 and focal length f = 50 mm:
's’= 50 mm / 10.1 = 4.95 mm
In macro imaging with E = 1, (1:1 imaging)
the lens extension equals the focal length f.
F6: Distance sensor - measuring region OO’
(
1
+ 2 . f + HH’
E
)
Formulae_ZK.indd • Page 39
For E < 1/10 then OO’ approximates (1/E + 2) . f + HH’.
Example 1: Video lens B1614A, focal length f = 16 mm, HH’ = 3.85 mm,
L = 290 mm, S = 13.3 mm:
OO’ = (L/S + 2) . f + HH’ = (290/13.3 + 2) .16 mm + 3.85 mm
= 384.7 mm (as an approximation)
Example 2: Rodagon 4.0/80, focal length f = 81 mm, HH’ = -2.5 mm, E= 1/6:
OO’ = (1/E+E+2). f + HH’ = (1/6+6+2) . 81mm - 2.5 mm = 658.7 mm
F7: Field angle w
The field angle w is determined by the sensor length S, the focal length f
S
w = arctan . .
and magnification E:
2 f (1 + E)
(
Measurement region
!
#
!
"
$
!
##%
&
Line scan
sensor with
pixel pitch 'y’
Focal length f
F-number K
Depth of focus
2z
2z
$
&!
#
%
&
* for 'y' = 0.014 mm
and E = 1/10
)
The field angle is used for calculating the edge intensity, F10.
)
w
Rule of thumb: The focal length should equal or
be more than the sensor length. In this case, the
edge intensity is >70% of the center intensity.
22.0 mm
6.7 mm
40.0 mm Total = 68.7 mm
OO’ = E
L
F10: Edge intensity
The edge intensity of line scan signals is determined by the illumination and the field angle w (see
F7). Even for homogeneous illumination, the signal
amplitude decreases towards the ends of the line:
Edge intensity [%] = 100 . cos4 (w)
LT = flange focal length + lens extension - (Camera flange length)
LT = s’A + 's’ - s’K
Example: Rodagon 4.0/80, focal length f = 81 mm, E= 1/6,
s’A = 74.7 mm, s’K = 19.5 mm:
's’= f / E = 81 mm/ 6 = 13.5 mm
LT = 74.7 mm + 13.5 mm - 19.5 mm = 68.7 mm
With magnification E and focal length f then
w
(
F5: Tube length LT
Implemented by: focus adapter FA22-40
+ focus adapter extension
+ 2x extension rings ZR20
OO’
K’ = K . E
Example: Nominal F-number K = 4, magnification E = 1:
effective F-number K’ = 2 . K = 8
Relative signal amplitude
" $
2
E
=
(1 + E)
! # " "
With the magnification E and focal length f, the lens extension is 's’ = f . E
Example 2:
A
a
F9: Effective F-number K’, relative signal amplitude
For small magnifications E < 1/10 when calculating signal amplitude or the
limit of lens resolution caused by diffraction (see F12), the F-number (focal
length/ aperture diameter) is replaced by an effective F-number (image range/
aperture diameter). With a nominal F-number K and small magnification E then
the effective F-number K’ is calculated from:
.
Magnification E = 1/10.1 and OO’ = 605 mm:
Focal length f = 605 mm/ (10.1 + 2) = 50 mm
Example 1:
LO
HH’
K
z F3: Calculation of focal length f
With magnification E and distance sensor-measuring region OO’
f=
LT
F8: Depth of focus
The depth of focus 2z is calculated from
1
1
2z = 2. 'y’. K . (1 + )
E
E
using the F-number K , the pixel pitch (mm) 'y’,
and the magnification E.
Example: Pixel pitch
'y’ = 0.014 mm
reciprocal magnific. 1/E = 10
F-number
K=4
then
2z = 2 .0,014 mm . .10 .(1+10) = 12,3 mm
1
1
1
+
=
a
a’
f
S
sensor length
=
measuring region
L
a’ f s’A
Lens focal length (mm)
Sensor length (mm)
Measurement region (mm)
Object range (mm)
Image range: Distance of
element to H’ (mm)
E
Magnification
w
Field angle
OO’ Distance from sensor to
measurement region (mm)
HH’ Principal point distance (mm)
(can lengthen or shorten OO’ )
s’K Camera flange length
s’A Flange focal length (mm)
's’ Lens extension (mm)
LT
Tube length consisting of
focus adapter FA22-...
and extension rings ZR... (mm)
LO Lens length (mm)
A
Working distance (mm)
f
S
L
a
a’
s’K
w
Example: Edge intensities calculated for two different field angles using the
same sensor length S = 28.7 and magnification E = 1/4:
a) focal length f = 50 mm
b) focal length f = 28 mm
field angle w = 13°
field angle w = 22.3°
edge intensity = 90%
edge intensity = 73%
F11: Diffraction limit
The resolution of a lens is limited by diffraction and declared using the effective
F-number K’ (see F8). The best possible resolution is achieved by closing the
lens aperture by 1 to 2 steps, so that the lens resolu
tion approaches the diffraction limit. Adjacent image
y !
K'
elements are distinguishable, therefore, when their
distance is:
'y’> 2,4 . O. K’
"#
"
The optical wavelength O for visible radiation can
#
be considered to be 550 nm.
$
Example: effective F-number K’ = 8
wavelength O = 550 nm
%$
'y’min = 10.6 μm
&
'()$
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73%
F2: Magnification E:
The magnification is defined as
's’
90%
F1: Imaging equation
Object range and image range are related by the
imaging focal length:
The formulae F3 to F6 are derived from this equation.
Sensor
S
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Lenses and Lens Tube Accessories for Line Scan Cameras
Schäfter+Kirchhoff supplies a wide range of and the resultant focal length that, in turn,
•
•
•
•
Object size
Depth of field
Magnification
Resolution
lenses, adapters, extension rings and other
accessories for use with their line scan cameras. The three criteria for best choice of
lens are the length of the line sensor, the required magnification and the physical space
that is available. Video (CCTV), photo, scan
and macro lenses from notable suppliers as
well as specialist lenses from Schäfter+Kirchhoff
can be supplied. Sensor length and required
magnification determine the choice of lens
• Perturbations
• Distortion
• Modulation
affect the physical space occupied as well as
the vignetting, distortion and depth of field of
the application. Short focal length lenses can
be accommodated in a compact space but,
in comparison with lenses of longer focal
length, are more prone to distortion.
Indispensable information and a guide for the
appropriate choice of lens are provided on
page 39, together with some formulae for
calculation of the light characteristics.
Lenses, adapters, extension rings and accessories for line scan cameras
Lens adapter
Camera
Mounting bracket
Lens
Focus adapter
Tube extension rings
Order Code
All camera casing variants and
dimensional drawings are presented
in section Dimensions, page 58.
M1
M2
MC1
MC2
Mounting bracket
Mounting bracket
Clamping set
Clamping set
SK5105
SK5105-L
SK5102
SK5101
For configurations with tube lengths
> 55 mm see mounting systems M3
and M4 , page 41.
A3
Adapter F-Mount ĺ page 42
Focus adapter ĺ page 45
FA1 M39x1/26" (Leica)
FA2 free rotatable,
M39x1/26" (Leica) – M40x0.5
FA3 free rotatable,
M39x1/26" (Leica) – M45x0.5
Extension rings ĺ page 45
Z1 C-Mount
ZR E'rings M39x1/26" (Leica)
ZR-L Extension rings M45x0.75
Camera attachment C-Mount, se
ensor length max. 16 mm
O1 Video (CCTV) lenses
ĺ page 42, table 1
O2 Photo (SLR) lenses with locking
mechanism ĺ page 42, table 2
O3 Photo (SLR) lenses ĺ table 2
O4 Scan lenses, M39x1/26"
ĺ page 43, Table 3a
O5 High-Resolution Scan and
Macro lenses, M39x1/26"
ĺ page 43, table 3b
Z1
MC1
C-Mount
M1
AT1
AC1
O1
AL1
A3
MC2
Sensor
M2
FA1
BG1
Camera attachment thread M40x
x0.75, sensor length max. 35 mm
M40x0.75
MC1
M45x0.75
O2
A3
M1
AT2
AC2
AL2
F-Mount
MC2
FA1
O3
Sensor
M2
BG2
ZR
FA2
M39x1/26"
(Leica)
O4
ve
V-Groo
Camera attachment thread M45x
x0.75, sensor length max. 41 mm
A3
O5
AC3
AL3
ZR-L
MC2
Lenses-Adapters-Mounting_ZK.indd • Page 40
AT3
FA3
Sensor
ve
V-Groo
M2
BG3
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Camera
Lens adapter
Focus Adapter
Lens
Extension rings
Order Code
All camera casing variants and
dimensional drawings are presented
in section Dimensions, page 58.
FA4 Focus adapter
ĺ page 37
FA5 Focus adapter
ĺ page 37
FA26-S45
A1
FA26-S55
A2
For XL / XB / XC camera series also
see page 36.
O4 Scan lenses, M39x1/26"
ĺ page 43, Table 3a
O5 High-Resolution Scan and
Macro lenses, M39x1/26"
ĺ page 43, table 3b
O6 HR Macro lenses, AS46
ĺ page 44, table 3c
O7 HR Macro lenses, AS46 reversed
mount ĺ page 44, table 3c
Lens Adapter rotatable
M39x1/26" (Leica)
Lens Adapter rotatable
AC46 ĺ page 37, 45
ZR
Camera attachment thread M72x
x0.75, sensor length max. 71 mm
Extension rings
M39x1/26" (Leica)
ZR-L Extension rings M45x0.75
ZR55 Extension rings M55x0.75
ĺ page 37, 45
XL-Series
Any rotation angle adjustable:
2 piece parts adapter with internal
V-groove attachment
CT5
CC5
O4
M39x1/26"
(Leica)
M45x0.75
CL5
M2
ZR-L
FA4
A1
ve
V-Groo
ZR
O5
Sensor
CG5
AC46
M55x0.75
also applicable for
XB-Series
EG5
ET5
EC5
ZR55
FA5
ve
V-Groo
A2
O6
and
XC-Series
FG7
FT7
FC7
SK7500U3TO-XL
ĺ see page 44
O7
EG5
FT7
FC7
Mounting Brackets and Systems
Mounting brackets and mounting systems:
Schäfter+Kirchhoff supplies mounting brackets, such as
specifically designed to accept the camera casings.
or
M1
M2 , that are
Flange Dimension Ø 42 mm
Flange Dimension Ø 47.5 mm
Mounting Bracket SK5105
Mounting Bracket SK5105-L
Order Code
SK5105
SK5105-L
6
M3
6.5
M3
Allen screw
DIN 912–M3x12
6.5
70
63
40
15
Clamp
Order Code
Ø 4.3
Allen screw
DIN 912–M3x12
M4
Mounting System SK5105-2
SK5101
(set of 4 pcs.)
15
7.5
Ø4
Ø 4.3
Order Code
Order Code
SK5105-2L
6
6
70
3.5
36
7.5
Ø4
31.5
M4
25 10
Ø4.3 3.5
40
40
For camera configurations
with tube length > 55 mm
using extension rings ZR-L
1/4’’20G
2
Ø4
70
25 10
Ø4.3 3.5
1/4’’20G
36
31.5
M4
70
63
3.5
M4
Mounting System SK5105-2L
SK5105-2
For camera configurations
with tube length > 55 mm
using extension rings ZR
3.5
40
63
70
1/4’’ 20G
M4
2
Ø4
70
63
Lenses-Adapters-Mounting_ZK.indd • Page 41
M3
Order Code
SK5102
(set of 4 pcs.)
36
Ø 3.3
20 16.5
MC2 Clamping Set SK5101
50.3
41.7
MC1 Clamping Set SK5102
Clamp
6
50
66
16.5 20
3.5
36
Ø 3.3
SK5105-L with clamping set
SK5101, mounted at front side
for fixing of GigE camera
50
66
10 10
For cameras with lens thread
size M45x0.75
1/4’’ 20G
Order Code
M2
10 10
For cameras with lens
thread sizes C-Mount and
M40x0.75
50.3
41.7
M1
The mounting brackets M3 and M4 are specially designed for the fitting of
extension rings and locate the camera centrally on the extension ring.
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•
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Lenses, Lens Adapters and Tube Extension Rings
Video (CCTV) Lenses
f
mm
K
HH'
mm
LO
mm
mm
1
FL-HC1212B-VG
12
1.2
2/3"
11
2
FL-CC1614-2M
16
1.4
2/3"
11
3
FL-CC2514-2M
25
1.4
2/3"
11
4
FL-CC3516-2M
35
1.6
2/3"
11
5
FL-CC5028-2M
50
2.8
2/3"
11
6
FL-BC1214D-VG
12.5
1.4
1"
16
7
FL-BC1218A-VG
12.5
1.8
1"
16
8
FL-BC2514D-VG
25
1.4
1"
16
0.53
Min. close focus
range (lens frotn
edge to object
plane
S
mm
Filter thread
Outer diameter
Order Code
Accessories:
Extension rings Z1 for close-up and macropictures
Field of View
Flange focal length (f):
17.526 mm
F-number
Attachment:
C-Mount (1"-32 TPI)
Focal length
Table 1
Video (CCTV) Lenses
• 1" for 16 mm max. sensor lengths
• 2/3" for 11 mm max. sensor lengths
• 13x17.3 (Four Thirds) for 22 mm max.
sensor lengths
Length
O1
CCTV lenses are small in size, yet highly
responsive to light and have an integrated
focussing mechanism.
Principal point
disatance
Other CCTV lens are
available on request
Video (CCTV) Lenses O1 with C-mount
(threaded connector) are available in various
formats depending upon the image size.
CCD sensor
length max.
Video (CCTV) lenses
with threads for the attachment of
threaded accessories
A
mm
35.5
30
M27x0.5
200
-16.2
33
29.5
M27x0.5
250
32
29.5
M27x0.5
250
-23
35.4
29.5
M27x0.5
400
-2.59
34
29.5
M27x0.5
900
21.65
50
42
M40.5x0.5
300
40
42
M40.5x0.5
300
37.3
30
M27x0.5
300
9
FL-BC2518-VG
25
1.8
1"
16
40
42
M40.5x0.5
600
10
MeVis-C 1.6/25
25
1.6
1"
16
1.9
44.1
42
M35.5x0.5
260
11
MeVis-C 1.6/35
35
1.6
1"
16
6.4
59.4
42
M35.5x0.5
370
12
FL-BC5014A-VG
50
1.4
1"
16
48
48
M46x0.75
1000
13
XNP 2.0/28
28
2
13x18
22
-2.9
35.5
34
M30.5x0.5
62
14
XNP 2.0/35
35
2
13x18
22
-3.5
40.8
34
M30.5x0.5
360
Z1
Extension Rings C-mount
6 items: 0.5 – 1 – 5 – 10 – 20 – 40 mm
Order Code EX-C6
0.5
5.0
1.0
10.0
20.0
40.0
Extension rings (single items)
Ring size
Order Code
0.5
EXT-0.5
1.0
EXT-1
5.0
EXT-5
10.0
EXT-10
Photo Lenses
AOC - F - 40
S
mm
ȕ
s'A
mm
LO
mm
LO
mm
mm
Min. close focus
range (lens frotn
edge to object
plane
s'A
mm
A
mm
1
SK2.8/20-40
SK2.8/20-45
AF2.8/20D
20
2.8
36
1/8.3
19.5
46.5
69.5
42.5
69
M62x0.75
250
2
SK2.8/28-40
SK2.8/28-45
AF2.8/28D
28
2.8
36
1/5.6
19.5
46.5
71.5
44.5
65
M52x0.5
250
3
SK2,0/35-40
SK2,0/35-45
AF2,0/35D
35
2
36
1/4.2
19.5
46.5
70.5
43.5
64.5
M52x0.5
250
4
SK1.4/50-40
SK1.4/50-45
AF1.4/50D
50
1.4
36
1/6.8
19.5
46.5
69.5
42.5
64.5
M52x0.5
450
5
SK1.8/50-40
SK1.8/50-45
AF1.8/50D
50
1.8
36
1/6.6
19.5
46.5
66
39
63.5
M52x0.5
450
AT2
M1
O2
O2 Photo lens SK1.4/50-40
• integrated focus and aperture adjustment
• locking mechanism for fixation of the depth of focus and focal length
prevent unintentional maladjustments
• Attachment thread: M40x0.75
Flange focal length: 19.5 mm
matching with all S+K camera casings with M40x0.75 attachment
such as AT2, AC2 and AL2.
AT2 Camera: SK2048U3SD USB 3.0 interface, see page 20.
M1 Mounting bracket: SK5105, see page 41.
42 01-2016 E
Kieler Str. 212, 22525 Hamburg, Germany
•
Tel: +49 40 85 39 97-0
•
Fax: +49 40 85 39 97-79
•
info@SuKHamburg.de
•
www.SuKHamburg.com
Lenses-Adapters-TubeExt_ZK.indd • Page 42
K
Outer diameter
f
mm
Length AF...
Order Code
Length SK...
F-Mount attachment
Order Code
Attachment thread
45 = M45x0.75
40 = M40x0.75
32 = M32x0.75
C = C-Mount
1"-32-TPI
Flange focal
length (f) AF...
M45x0.75 attachment
Order Code
Order Code
Flange focal
length (f) SK...
M40x0.75 attachment
Max. magnification
O3
CCD sensor
length max.
Focal length
Table 2
Photo Lenses
(SLR Lenses)
O2
Lens Adapter F-Mount
Standard lens O3 with F-Mount (bayonet):
Schäfter+Kirchhoff supply the model series AF
from Nikon.
Schäfter+Kirchhoff supply
the lens adapter A3 for
the attachment of photo
lenses with a bayonet
attachment (e.g. F-Mount)
to line cameras with lens
A3
O3
threads M40x0.75 or
M45x0.75.
Other photo lenses are available on request.
F-number
Series SK: O2 Schäfter+Kirchhoff provide a
special series of photo lenses with focal lengths
from 20 to 50 mm for industrial measurement
applications. The lens is attached by a screw
thread to the camera casing, obviating the
unwanted increase in size of the object image
associated with the use of a conventional bayonet
connector.
A locking device for fixation of the depth of focus
and
focal
length
prevent
unintentional
maladjustments.
Attachment thread: M40x0.75 or M45x0.75
A3
Filter thread
Photo lenses are suitable for line cameras with sensor lengths up to 36 mm. A distinguishing feature is
their integral focussing mechanism and they provide good performance at a reasonable price.
Two model series are available:
Scan Lenses and Macro Lenses
Scanning lenses and macro lenses (tables 3a, 3b, 3c) are optimized
for infinite imaging ( = 1/1– 1/20), unlike conventional photo and CCTV
lenses. Sensor lengths of up to 90 mm can be accommodated and
the lenses provide high quality images with a flat field area within their
operating range.
HH'
mm
LO
mm
mm
Distance
lens to
object
s'A
mm
Filter thread
ȕ
Mount
ȕo
Distance
CCD to
object
S
mm
For optimum magnification ßo
Flange focal
length (ß)
K
Outer diameter
f
mm
Flange focal
length (f)
Order Code
Range of
magnification
O4
Optimum
magnification ßo
F-number
Table 3a
Scan Lenses
Max. CCD sensor
length
For calculating the flange focal length s'A and the tube length LT see
formulae F4 and F5 with example calculations on page 39.
Length
Scan and macro lenses do not have their own focussing mechanism
and require a focus adapter to be attached to the line camera (see
page 45). The focus adapters and optional extension rings provide
a mechanically precise and robust connection between the scan lens
and the line cameras from Schäfter+Kirchhoff.
Principal point
disatance
Lens Series
• Rogonar-S:
Inexpensive lens with good imaging perfomance. Optimum
price/performance ratio
• Rodagon and Componon-S:
High performance lens featuring a highly consistent imaging
quality and broad magnification range
• Rodagon-WA:
High perfomance lens with extended viewing angle, shorter
focal length for the same image field possible, slightly increased
distorsion
• Apo-Rodagon-N:
Apochromatically corrected lens designed to meet the highest
requirements in an especially broad magnification range
s'Aȕ
mm
OO'
mm
A
mm
31
50
M39x1/26''
M40.5x0.5
59.7
319
228
0.57
30.6
50
M39x1/26''
M40.5x0.5
67.6
377
279
3
Rodagon 4.0/60
60
4
56
1/4
1/2 - 1/16.7
56
-2
30.6
50
M39x1/26''
M40.5x0.5
71.5
385
283
4
Rogonar-S 4.5/75
75
4.5
85
1/4
1/2 - 1/10
65.5
0.83
30.6
50
M39x1/26''
M40.5x0.5
84.0
463
349
5
Rodagon 4.0/80
80
4
62
1/4
1/2 - 1/16.7
74.5
-2.6
30.8
50
M39x1/26''
M40.5x0.5
94.8
504
379
6
Rogonar-S 4.5/90
90
4.5
65
1/4
1/2 - 1/8
80
1.16
30.6
50
M39x1/26''
M40.5x0.5
102.5
563
430
7
Rogonar-S 4.5/105
105
4.5
108
1/4
1/2 - 1/8
95
1.16
30.6
50
M39x1/26''
M30.5x0.5
121.2
657
506
8
Apo-Rodagon N 4.0/105
105
4
100
1/6
1/2 - 1/16
99.2
-3.3
36
50
M39x1/26''
M40.5x0.5
116.7
856
703
9
Rodagon 5.6/105
105
5.6
108
1/6
1/2 - 1/100
101.5
-0.88
30.5
50
M39x1/26''
M40.5x0.5
119.2
868
718
10
Rodagon 5.6/135
135
5.6
150
1/6
1/2 - 1/10
128
-2.45
31
50
M39x1/26''
M40.5x0.5
150.6
1106
924
11
Rodagon-WA 4/60
60
4
55
1/8
1/4 - 1/15
55.5
-2.44
31
50
M39x1/26''
M40.5x0.5
63.2
619
525
12
Rodagon-WA 4/40
40
4
43
1/10
1/4 - 1/20
36.5
0.17
30.7
50
M39x1/26''
M40.5x0.5
40.5
489
418
13
Rodagon 2.8/50
50
2.8
43
1/10
1/2 - 1/15
43.5
-2.75
30.7
50
M39x1/26''
M40.5x0.5
48.5
603
524
14
Apo-Rodagon N 2.8/50
50
2.8
44
1/10
1/2 - 1/20
46
-2.3
30.8
50
M39x1/26''
M40.5x0.5
51.0
605
523
15
Apo-Rodagon N 4.0/80
80
4
86
1/10
1/2 - 1/15
78
-2.5
35
50
M39x1/26''
M40.5x0.5
86.4
1008
886
16
Apo-Rodagon N 4.0/90
90
4
90
1/10
1/2 - 1/15
84.9
-3.2
31.2
50
M39x1/26''
M40.5x0.5
93.9
1087
962
17
Componon-S 2.8/50
50
2.8
43.2
1/12
1/3 - 1/20
42
-3.1
30
46
M39x1/26''
M43x0.75
46.2
704
628
18
Componon-S 4.0/80
80
4
80.6
1/12
1/3 - 1/25
77.5
-1.8
30
46
M39x1/26''
M43x0.75
84.2
1129
1015
19
Componon-S 5.6/100
100
5.6
108
1/12
1/3 - 1/25
95.8
-2.4
30
46
M39x1/26''
M43x0.75
104.3
1438
1304
20
Rodagon 4.0/35
35
4
40
1/20
1/5 - 1/33.3
30.4
0.11
30.9
50
M39x1/26''
M40.5x0.5
32.2
774
711
21
Rogonar-S 4.0/35
35
4
30
1/20
1/10 - 1/30
34
-0.06
23.5
40.5
M39x1/26''
M30.5x0.5
35.8
803
743
S
mm
ȕo
ȕ
s'A
mm
HH'
mm
LO
mm
mm
Distance
lens to
object
K
Distance
CCD to
object
f
mm
Flange focal
length (ß)
Order Code
Filter thread
O5
For optimum magnification ßo
Mount
Table 3b
High-Resolution
Scan and
Macro Lenses
Outer diameter
1.16
52.5
Length
47
1/2 - 1/10
Principal point
disatance
1/2 - 1/10
1/4
Flange focal
length (f)
1/4
56
Range of
magnification
43
4.5
Optimum
magnification ßo
2.8
60
Max. CCD sensor
length
50
Rogonar-S 4.5/60
F-number
Rogonar-S 2.8/50
2
Focal length
1
s'Aȕ
mm
OO'
mm
A
mm
1
Apo-Rodagon D1x 4/75
75
4
82
1/1
1/0.8 - 1/1.25
62
-14.35
34.1
50
M39x1/26''
M40.5x0.5
136.9
285
114
2
Apo-Rodagon D2x 4.5/75
75
4.5
86.2
1/2
1/1.25 - 1/2.5
72.1
-2.2
30.4
50
M39x1/26''
M40.5x0.5
109.5
334
195
3
Apo-Rodagon HR 0.5x 5.6/75
75
5.6
62
1/2
1/1.5 - 1/2.8
54
1.8
47
46
V46
M37x0.75
92.5
348
208
4
Apo-Rodagon D 5.6/120
120
5.6
102
1/2
1/1.25 - 1/3
113
-3
30.7
50
M39x1/26''
M40.5x0.5
173.0
537
333
5
Apo-Componon 2.8/40
40
2.8
43.2
1/10
1/2 - 1/20
38.1
-2.2
40.5
46
M39x1/26''
M43x0.75
42.2
500
417
6
Apo-Componon 4.0/60
60
4
60
1/6
1/2 - 1/25
53.3
-1.9
43.2
46
M39x1/26''
M43x0.75
63.3
487
381
7
inspec.x M1.4/50
50
1.4
1/14.3
1/6.67 - 1/1000
42.6
-4.8
45
70
F-Mount
M58x0.75
46.2
840
749
43.5
Configuration Example
Lenses-Adapters-TubeExt_ZK.indd • Page 43
Line camera with macro lens f’ 75 mm
for 1:1 imaging
Appropriate components:
FA1 Focus adapter FA22-x
ZR Extension ring 1x ZR50 2x ZR20
M3 Mounting system SK5105-2
O5 Macro lens APO-Rodagon D1x 4.0/75
ATx
ACx
ALx
FA1
ZR
M3
ZR
O5
ZR
01-2016 E
Kieler Str. 212, 22525 Hamburg, Germany
•
Tel: +49 40 85 39 97-0
•
Fax: +49 40 85 39 97-79
•
info@SuKHamburg.de
•
43
www.SuKHamburg.com
High-Resolution Macro Lenses
High-Resolution Macro Lens
1:5.6/ f' 105 mm
Attachment: 46 mm V-groove
Reversed Assembly
41
Imaging
area
57.3
Distance
lens to
object
mm
Distance
CCD to
object
LO
mm
Flange focal
length (ß)
HH'
mm
Sensor
80.3
Imaging
area
57.3
s'A
mm
For optimum magnification ß
Filter thread
ȕ
Outer diameter
ȕ
Length
S
mm
Principal point
disatance
K
O7
Flange focal
length (f)
f
mm
O6
Range of
magnification
Order Code
• for line scan sensors up to
70 mm
• for pixel sizes down to 5 μm
F-number
Attachment: V-groove 46 mm
Focal length
Table 3c
High-Resolution Macro Lenses
Optimum
magnification ß
Max. CCD sensor
length
Sensor
O6
s'Aȕ
mm
OO'
mm
A
mm
1
inspec.x L 5.6/105 ß-0.33
105
5.6
70
1/3
1/2 - 1/4
64.87
-7.37
72.5
61.4
M43
100.0
555
382
2
inspec.x L 5.6/105 ß-0.5
105
5.6
70
1/2
1/1.5 - 1/2.5
65.05
-7.16
72.5
61.4
M43
117.7
467
277
3
inspec.x L 5.6/105 ß-0.76
105
5.6
70
1/1.3
1/1.1 - 1/1.7
65.36
-7.27
72.5
61.4
M43
146.4
422
203
4
inspec.x L 5.6/105 ß-1.0
105
5.6
70
1/1
1/0.85 - 1/1.2
65.54
-7.28
72.5
61.4
M43
170.9
414
171
O7
Reversed assembly
5
inspec.x L 5.6/105 ß-0.76 retro
105
5.6
92
1/0.76
1/0.6 - 1/0.9
65.7
-7.27
72.5
61.4
M43
204.4
422
145
6
inspec.x L 5.6/105 ß-0.5 retro
105
5.6
140
1/0.5
1/0.4 - 1/0.65
65.99
-7.16
72.5
61.4
M43
276.7
467
118
7
inspec.x L 5.6/105 ß-0.33 retro
105
5.6
212
1/0.33
1/0.25 - 1/0.5
66.04
-7.37
72.5
61.4
M43
385.4
558
100
Configuration Example
Line scan camera SK7500U3TO-XL ZK with focus adapter FA26-S55 A2
and macro lens inspect.x L 5.6/105 for E = 1.4 and E = 0.7
Lens inspect.x L 5.6/105 ß-0.76 O6
in standard format, magnification ȕ = 0.714
213.3
L = 73.53 mm
00’ = 426.4 mm
213.3 mm
FA26-S55
ZR55-60
AC46-55
E=25.9
ZK
FA5
ZR55
A2
Lens inspect.x L 5.6/105 ß-0.76 O7
in retroposition, magnification ȕ = 1.4
E = 0.714
00’= 426.4
285.8
140.6
L = 37.4 mm
ZK
FA5
Line camera
System components
30
Line camera SK7500U3TO-XL ZK with
macro lens inspect.x 5.6/105 ß-0.76 O6
ZR55
Focus adapter
Order Code
SK7500U3TO-XL
Order Code
FA26-S55
Order Code
ZR55-60
E = 0.7
Lens
72.5
17.5
ZR55
E = 1.4
E = 1.4
1x
2x
A2
Order Code
AC46-55
O6
Order Code
inspec.x L 5.6/105 ß-0.76
Lenses-Adapters-TubeExt_ZK.indd • Page 44
The lens series inspect.x L 5.6/105 can be
used in the standard format (with a miniature image of the object on the sensor) or
in the retroposition (with a magnified image
of the object on the sensor), see Table 3c.
FA5
O7
Lens adapter
60
M55x0.75
ZK
A2
Extension ring
25.9 E = 0.7
26.3 E = 1.4
12
3
The distance between the sensor and the
lens required for the predetermined image
size is implemented using focus adapter
FA26-55 (see page 37), lens adapter and
extension rings. The final focussing adjustments are accomplished using the fine
adjustment mechanism of the focus
adapter.
ZR55
AC46
00’ = 426.4 mm
140.6 mm
FA26-S55
ZR55-60 (2x)
AC46-55
E=26
Ø71.25
Field Of View
Distance from
sensor to object
Working distance
Focus adapter FA5
Extension ring ZR55
A2
Adapter
Preset focus
O6
M55x0.75
Field Of View
Distance from
sensor to object
Working distance
Focus adapter FA5
Extension ring ZR55
A2
Adapter
Preset focus
00’= 426.4
213.1
44 01-2016 E
Kieler Str. 212, 22525 Hamburg, Germany
•
Tel: +49 40 85 39 97-0
•
Fax: +49 40 85 39 97-79
•
info@SuKHamburg.de
•
www.SuKHamburg.com
Focus Adapter for L-Mount Lenses (M39x1/26" Leica)
Optical Filters
For many measuring tasks, the quality of the raw data in terms of contrast
and sharpness can be improved directly through optical filtering.
• Edge filters and bandpass filters suppress any ambient light when using
direct illumination with laser or LED light sources.
• UV-IR blocking filters suppress selectable portions of the non-visible
wavelength radiation for contrast enhancement.
• Polarizing filters can suppress disruptive reflections from non-metallic
surfaces.
• Notch filters are used to block the excitation wavelength when acquiring
an image of the emitted fluorescence.
• Individual filters can be used in combination to satisfy highly specialized
requirements in demanding measurement tasks.
Schäfter+Kirchhoff provides mounted filters for all of the lenses listed on
pages 41–42. Filters with other threads can be provided on request.
L
Ø53
Long-pass edge filter
FA2
FA22RL-40 Order Code
length L:
35 ... 45 mm
M40x0.75
Order Code
28 ... 38 mm
M39x1/26’’
M39x1/26", female — M40x0.75, male
FA22R-40
length L:
FLP - 590 - 27 Order Code
L
OG590 = 590
RG630 = 630
RG715 = 715
Ø53
80
OG 590
RG 630
RG 715
60
40
20
27 = M27 x 0.5
40 = M40.5x 0.5
43 = M43 x 0.75
52 = M52 x 0.75
62 = M62 x 0.75
Filter thread
FA3
100
Long-pass edge filters transmit
only the longer wavelengths from
the designated range, i.e. beyond
570 nm for filter OG590
Focus adapter FA22R..., any rotation angle adjustable (V-groove)
Transmission in %
Focus adapter FA22...
FA22-x
Order Code
42 = M42 x 1
40 = M40 x 0.75
39 = M39 x 1/26"
32 = M32 x 0.75
C = C-Mount
length L:
22 ... 32 mm
X
FA1
M39x1/26’’
Scan and macro lenses do not have their own focussing mechanism
and require the focus adapter FA22-... to be attached to the line
camera.
The focus adapter can be supplied with various threads for attachment
to the camera (from C-mount to M42x1, see Order Code). At the front,
a standard thread M39x1/26“ (Leica) is provided for the attachment
of a scan or macro lens.
The focus adapter incorporates a fine 11 mm thread that enables
adjustment within the range 22 to 33 mm. Three circumferentially
placed grub screws are used to lock the finalized focal length and
depth of field.
0
550
600
650
700
750
Wavelength in nm
Focus adapter FA22R..., any rotation angle adjustable (V-groove)
Application: Scanning of bank transfer forms
The orange bank form is visible to the human eye but invisible to a camera when
illuminated with monochromatic red light, reducing data redundancy and
increasing system efficiency.
M45x0.75
FA22R-45
length L:
M39x1/26’’
M39x1/26", female — M45x0.75, male
Order Code
22 ... 32 mm
L
Ø53
A
B The shorter wavelengths
below 585 nm become totally
undetectable when using the
filter type OG 590
M39x1/26’’
M45x0.75
FA22RL-45 Order Code
length L:
29 .. 38 mm
A The unfiltered emission
spectrum of a fluorescent
tube with color code 41
L
Ø53
B
436
546
436
612 nm
546
612 nm
UV-IR blocking filter type 486
Order Code
17.5 mm
Filter thread
17.5
Bandpass filter
The ZR... series of extension rings supply the separation required
between camera and lens for near and macro imaging.
Extension rings M39x1/26"
Appropriate mounting system:
SK5105-2 M3 , see page 41
attachment threads M39x1/26" male/female
10 = Length 10 mm
15 = Length 15 mm
20 = Length 20 mm
50 = Length 50 mm
L
Extension rings M45x0.75
L
Filter thread
L=Length
L=Le
Ø47.5 f8
ZR55-15
Order Code
15 = Length 15 mm
25 = Length 25 mm
60 = Length 60 mm
L
L=Length
27 = M27 x 0.5
40 = M40.5x 0.5
43 = M43 x 0.75
52 = M52 x 0.75
62 = M62 x 0.75
Notch filter
20
0
600
800
Wavelength in
in nm
nm
Wellenlänge
1000
Central
Wavelength
80
Peak
Transmittance
60
40
20
0
FWHM Wavelength
Polarization filters
transmit in only one
polarization direction
and can suppress
disturbing reflections
from highly reflective
surfaces, such as
those from glass,
plastics or varnish
100
Notch filters are interference filters that
selectively block a defined narrow spectral range.
They are particularly useful for the
suppression of monochromatic laser
radiation.
Extension rings M55x0.75, male/female
M55x0.75
ZR55
F - POL - 27 Order Code
M45x0.75
M45x0.75
Order Code
15 = Length 15 mm
25 = Length 25 mm
60 = Length 60 mm
87 = Length 87 mm
M55x0.75
Lenses-Adapters-TubeExt_ZK.indd • Page 45
ZR-L 15
40
100
Ø42 f8
Appropriate mounting system:
SK5105-2L M4 , see page 41
attachment threads M45x0.75 male/female
60
400
Bandpass filters are interference filters
that allow the transmission of only a
narrow spectral range.
They are used for the suppression of
extraneous light during image acquisition
with monochromatic illumination.
FWHM: full-width at half-maximum
Specifications available on request.
Polarization filter
L= Length
Ø58
ZR-L
M39x1/26’’
Order Code
M39x1/26’’
ZR 10
0.5
0.5
0.75
0.75
0.75
0.75
80
Ø58 f8
Tube Extension Rings
ZR
27 = M27 x
40 = M40.5 x
43 = M43 x
52 = M52 x
58 = M58 x
62 = M62 x
Specifications available on request.
Transmission in %
AC46-55
length:
FBP - UVIR - 27 Order Code
AC46
Lens adapter 46 mm V-groove – M55 x 0.75, male
for macro lenses
• inspec.x L5.6/105
• Apo-Rodagon HR 0.5x 5.6/75
M55x0.75
A2
Transmission
inin
%%
Transmission
100
UV-IR blocking filters block
undesired UV and IR radiation,
enhancing contrast
Lens Adapter for 46 mm V-groove attachment
80
60
40
20
0
400
600
800
Wavelength in nm
Ø58 h8
1000
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45
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Illumination Components
Illumination techniques
Choice of Illumination Source
A major difference for a line scan camera is the significantly shorter
exposure time in comparison with an area camera. The line frequency
determines the ultimate exposure time, because the images are
recorded line by line. Higher object scanning velocities as well as
higher resolutions require higher line frequencies and allow only
shorter exposure times. Typical line frequencies are of the order of
5 kHz to 50 kHz and their reciprocal provides the exposure period,
which is within the range of 200 to 20 microseconds, accordingly.
Although the sensitivity of advanced semiconductor sensors is
continuously increasing, it is the strength of illumination impinging
on the sensor surface that is the major prerequisite for good image
quality. Currently available high power LEDs are specially developed
for line scan camera applications and their demanding requirements,
achieving high luminosity and excellent efficiency with lifespans of
more than 10,000 hours.
The choice of illumination is made in terms of not only intensity but
also contrast, homogeneity and wavelength requirements, so that
the particular topographical features of the scanned object will be
emphasized.
Figure 1: Transillumination
Transillumination is the most efficient
illumination technique.
Application: Measurement of width or
defining an edge.
lamp
measured object
Figure 2: Front Illumination
The fluorescent tube is positioned as
closely as possible to the measured
object. A split aperture 2.1 is effective
in diminishing stray light at the line
sensor. The signal amplitude at the line
sensor decreases almost linearly with
increasing h for smaller lamp distances
and for larger distances, more than 3x
the lamp diameter, it decreases with
1/h2.
• Contrast
A sufficiently distinctive range in contrast is a prerequisite for the
accurate application of automatic image-analysis algorithms. It
is only then that the detection of imperfections, labels or object
dimensions is facilitated.
The light sources can be categorized into diffuse or directed types
of illumination. With direct illumination, the beam shape and angle
of incidence can be specified.
A selection of illumination techniques is presented in the adjacent
column.
Example:
For a distance h0 = 5 mm, the signal
is 75% of the saturation exposure
and, so, the decay in active signal
amplitude
for: h1 = 10 mm is 50 %,
h2 = 60 mm is 6 %,
h3 = 100 mm is 2 %.
• Homogeneity
Line scan
For truly uniform illumination,
camera
the light source must be
significantly longer than the
Lens
object to be measured as the
beam
properties
produce
adequate illumination towards
the center but decreasingly less
Measurement
so towards the periphery. The
area
overall
distribution
of
illumination
intensity
is
Lamp
influenced by the length of the
Intensity
light source and charactersitics
profile
of the beam, the distance from
the scanned object as well as
its relative transmitting and reflective properties.
The reflected beam angle is about 120° for LEDs and close to 80°
for fiber-optic cross-sectional beam converters. Diffusers and
lens arrays in front of the source can also increase the edge
intensity. Some line light sources allow fine intensity adjustments
along the sensor length in order to compensate for the decline in
edge intensity.
Relative signal amplitude
1
Distance h (mm)
0.5
0
0
20
40
60
80
100
Figure 3: Front Illumination from
greater Distance
For larger lamp distances h, the decay
of brightness can be compensated for
by using either of:
3.1 a cylinder lens (Fresnel, spherical or
aspheric lens)
3.2 a concave ellipsoidal reflector
Figure 4: Directed Bright-Field
Illumination
The principle of directed bright-field
illumination. Areas parallel to the line
sensor reflect the most light back into the
camera and appear bright.
Textured and structured areas reflect the
incident light in all directions and produce
darker areas in the image, independently
of their optical similarity to surrounding
areas.
• Optical Spectrum
Precise knowledge of the illumination source and the spectral
sensitivity of the camera is decisive for both monochrome as well
as color cameras. The sensor sensitivity of monochrome camera
is generally best in the red wavelengths and the emission
spectrum of the illuminating LED source is chosen accordingly.
For Schäfter+Kirchhoff color cameras, the appropriate balance
of red, green and blue channels is facilitated by the fine electronic
tuning (gain) of each channel separately. For some applications,
a dedicated color filter is necessary, which might be a blocking
filter for the higher intensities in adjacent UV or IR spectral regions
that protects the sensor from overillumination. An IR low-pass
filter, which blocks the IR and transmits the shorter visible
wavelengths, is ideal for the realistic imaging of naturally
heterogeneous materials such as stone or wood.
Page
Dark-field illumination of wafer inspection ...............................................................31
Pictures with color fidelity ........................................................................................33
Plug Scanner for automated bore plug inspection...................................................35
High contrast image acquisition with integrated bright-field illumination ................50
Stents: Quality control of medical implants..............................................................56
Beleucht_ZK.indd • Page 46
Applications:
Figure 5: Dark-Field Illumination
Dark-field illumination is used to highlight
the areas of a relatively unstructured
object that happen to be parallel to
the sensor. The bulk of the object
image remains dark and any variations
in topography are observed as highly
contrasting light areas.
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•
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•
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LED Line Illumination
MTD-LEDMTD-LED
LED-Linienleuchte
Application
For high measuring frequencies up to 125 kHz and a resulting exposure
(integration) time of only a few microseconds, a higher light intensity is
required on the line sensor when compared with a conventional area
sensor camera collecting at
only 60 Hz.
Inspection task with variable
illumination requirements
Control of the illumination intensity,
depending on the material under test
Very high intensities are
achieved with modern LED line
lights like the MTD LED-CP
series.
These compact lights were
especially developed for line
scan camera applications. Their
intensity profile in the line
direction is tunable using one of
16 user-programmable profiles.
The MTD LED-CP line lights are
available with blue, red, and
infra-red light, they are provided
in lengths ranging from 300 to
3 000 mm.
Figure 1: MTD-LED line light
Metal
T3
Applications
• Front-light and back-light for
web inspection
Paper
• Optimized illumination with
variable illumination profiles
Wood
Special Features
• High power COB-LEDs,
Chip-on-Board Technology
T2
• Temperature monitoring,
automatic switching to min.
output power in case of overheating
• Useful LED life-time of up to
50 000 hours
T1
100 %
Wood
• Modular cooling options:
passive or active with fan or
water cooling
• Collimated or focussed light
output
2
• Irradiance >700 W/m
Metal
• Constant current regulation
• Lengths 300–3 000 mm,
customized versions are
available
Paper
• Digitally selected illumination
profiles
0%
• Modulation up to 50 kHz
• Aluminium profile housing with
FPM sealing
T1
• Light colors blue (45 nm), red
(625 nm), IR (855 nm), and
white (approx. 6500K).
• Optimum thermal management
Shading Correction of the illumination profile
T2
Depending on the object under test, one of the predefined
illumination profiles is activated
MTD-LED illumination homogenity
MTD LED CP
MTD LED CP 300-R
256
Intensity (%)
256
Intensity (%)
T3
192
128
64
192
F-Stop:
Exposure time:
Resolution:
Mode:
128
64
5.6
11.2 μs
5 pixel/mm
Transmitted
0
0
0
1024
constant
2048
3072
4096
0
256
512
768
1024
1280
Software interface
1792
19
Each profile is adustable
in segments of 20 mm
length. The control range
for each segment is 4 to
100% of the maximal
intensity.
44
119
A control program provided by MTD is used for the definition of the
intensity profiles. A DLL library for user-programmed software is
available.
01-2016 E
Kieler Str. 212, 22525 Hamburg, Germany
2048
MTD-LED dimensions
Up to 16 different profiles
can be implemented permanently in the LED line
light.
Beleucht_ZK.indd • Page 47
1536
Pixel
parabolic illumination profile
•
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•
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•
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•
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