techspec silver
series telecentric
measuring lenses
Edmund Optics Inc.
®
techspec® silver series telecentric lenses
o
o
o
o
o
o
o
o
o
o
USA | UK | France | Germany | Japan | Singapore | China | Korea | Italy
Compatible with Z\v, Z\c, Z\x inch Chip Cameras
Designed for Metrology and Gauging Applications
Exceptional Image Quality
Ideal for Factory Automation
Ultra High Contrast
Integrates Easily
10 Different Magnifications Available
Tamper Proof Fixed Focus Design
Low Cost
<0.1° Telecentricity
The TECHSPEC® Silver Series line of telecentric lenses offer a compact, cost-effective solution for replacing standard fixed focal length lenses in applications requiring accurate measurement. Telecentric lenses correct perspective errors that yield variations in magnification through the depth of field.
The TECHSPEC® Silver Series lenses offer superior image quality and less distortion than conventional fixed focal length lenses. Our high quality optics, combined with a simplified non-focusing mechanical design, yield a more symmetrical image for superior software-integrated measurements while
featuring adjustable iris control.
primary magnification
4.0X
2.0X
1.0X
0.60X
0.50X
0.40X
0.30X
0.25X
0.20X
0.16X
telecentric backlight illuminator
Adjustable Aperture Allows Variable
Output Without Varying Color Temperature
Accepts Z\v” Fiber Optic or LED Input
Increases Contrast on Product Edges for Inspection Systems
Easy to Integrate
The Telecentric Backlight Illuminator uses optics to direct light from a fiber optic light guide or LED onto an object, producing high contrast silhouette.
The illuminator increases edge contrast and measurement accuracy in gauging applications by decreasing diffuse reflections that increase edge softening. The telecentric backlight illuminators, based on design principals from the Telecentric Measuring lenses, substantially increases illumination,
compared to a standard backlight, at nominal working distances. Compatible with Z\v” fiber optic light guides.
Mounting Post using TECHSPEC® 1X Silver Series
Telecentric Lens and Telecentric Backlight Illuminator
Telecentric Backlight Illuminator
Mounting Post using TECHSPEC® 1X Silver Series
Telecentric Lens and Standard Diffuse Backlight
Telecentric vs. Standard Diffuse Illumination:
Line Profile of Mounting Post Threads
#62-760
Contact us Today for A Volume or Custom Quote
800.363.1992 | www.edmundoptics.com
® COPYRIGHT 2009 EDMUND OPTICS, INC. ALL RIGHTS RESERVED 1/09
o
o
o
o
techspec® silver serieS
techspec® SILVER series telecentric lenses
Techspec® silver series telecentric lenses – field of view and resolutions
Primary
Magnification
0.60X
0.50X
0.40X
0.30X
0.25X
0.20X
0.16X
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
FOV
5.97
0.24
7.17
0.28
8.96
0.35
11.95
0.47
14.34
0.56
17.92
0.71
22.40
0.8
Pixel Res.*
9.33
0.0004
11.20
0.0004
14.00
0.0006
18.67
0.0007
22.40
0.0009
28.00
0.0011
35.00
0.001
Z\v” 640x480:
Z\c” 640x480:
FOV
7.89
0.31
9.47
0.37
11.84
0.47
15.79
0.62
18.94
0.75
23.68
0.93
29.60
1.17
Pixel Res.*
12.33
0.0005
14.80
0.0006
18.50
0.0007
24.67
0.0009
29.60
0.0012
37.00
0.0015
46.25
0.0018
Z\c” 1024x768:
FOV
7.94
0.31
9.52
0.37
11.90
0.47
15.87
0.62
19.05
0.75
23.81
0.94
29.76
1.17
Pixel Res.*
7.75
0.0003
9.30
0.0004
11.63
0.0005
15.50
0.0006
18.60
0.0007
23.25
0.0009
29.06
0.0011
FOV
10.56
0.42
12.67
0.50
15.84
0.62
21.12
0.83
25.34
1.00
31.68
1.25
39.60
1.56
Pixel Res.*
16.5
0.0006
19.80
0.0008
29.75
0.0010
33.00
0.0013
39.60
0.0016
49.50
0.0019
61.87
0.0024
Z\x” 640x480:
Z\x” 1280x1024:
FOV
9.92
0.39
11.90
0.47
14.88
0.59
19.84
0.78
23.81
0.94
29.76
1.17
37.20
1.46
Pixel Res.*
7.75
0.0003
9.30
0.0004
11.63
0.0005
15.50
0.0006
18.60
0.0007
23.25
0.0009
29.06
0.0011
Z\z.,” 1600x1200:
FOV
11.73
0.46
14.08
0.55
17.60
0.69
23.47
0.92
28.16
1.11
35.20
1.39
44.00
1.73
Pixel Res.*
7.33
0.0003
8.80
0.0003
11.00
0.0004
14.67
0.0006
17.60
0.0007
22.00
0.0009
27.50
0.0011
techspec® silver series telecentric lenses – Specifications
Primary Magnification:
0.60X
0.50X
0.40X
0.30X
0.25X
0.20X
0.16X
Working Distance (±3mm):
103mm
120mm
103mm
139mm
160mm
164mm
175mm
Res. (Image Space @ F10):
>40% at 40lp/mm
>40% at 40lp/mm
>40% at 40lp/mm
>40% at 40lp/mm
>40% at 40lp/mm
>40% at 40lp/mm
>40% at 40lp/mm
Telecentricity:
<0.1°
<0.1°
<0.1°
<0.1°
<0.1°
<0.1°
<0.1°
Distortion (Max.):
<0.3%
<0.3%
<0.3%
<0.3%
<0.3%
<0.3%
<0.3%
±1.4mm at F10
±2.1mm at F10
±3.3mm at F10
±5.7mm at F10
±8.2mm at F10
±12.9mm at F10
±19.7mm at F10
F6 - Closed
F6 - Closed
F6 - Closed
F6 - Closed
F6 - Closed
F6 - Closed
F6 - Closed
BBAR from 425-675nm
BBAR from 425-675nm
BBAR from 425-675nm
BBAR from 425-675nm
BBAR from 425-675nm
BBAR from 425-675nm
BBAR from 425-675nm
#56-678
#58-429
#56-677
#58-428
#56-676
#58-427
#56-675
DOF (10%@20lp/mm):
Aperture (f/#):
Lens Element Coating:
Stock Number
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® COPYRIGHT 2009 EDMUND OPTICS, INC. ALL RIGHTS RESERVED 1/09
* Metric pixel resolution is in microns
telecentric accessories
silver high power series
silver series
F
C
Iris Adjustment Ring
D
A
E
D
Iris Adjustment
C-Mount Thread
4.0mm
B
A F
B
E
techspec®® SILVER
GOLD series
techspec
seriestelecentric
telecentriclenses
lenses
4mm
C
C-Mount
Iris Locking Screw
Units: mm
Units: mm
silver series dimensions (mm)
Primary Magnification:
Max. Outer Dia. (A):
Mounting Dia. (B):
Length (C):
Mounting Length (D):
Mounting Offset (E):
Filter Size
(Mount dia. x thread pitch) (F):
0.60X
42mm
30mm
156mm
57mm
46mm
0.50X
40mm
30mm
153mm
42mm
68mm
0.40X
45mm
30mm
159mm
67mm
33mm
0.30X
46mm
30mm
.375
158mm
60mm
43mm
0.25X
48mm
30mm
158mm
49mm
44mm
0.20X
60mm
30mm
188mm
42mm
45mm
M40.5 x 0.5mm
M37 x 0.75mm
M43 x 0.75mm
M43 x 0.75mm
M46 x 0.75mm
M58 x 0.75mm
0.16X
65mm
30mm
191mm
Radius .945
50mm
2X 8-32 UNC-2B
43mm
.200 Deep
Radius .5906
+.0005
–.0000
M62 x 0.75mm
4.0X
61mm
30mm
.778
.778
249mm
99mm
2X 45.00°
17mm
M58 x 0.75mm
3X 8-32 UNC-2B
Thru
2.0X
45mm
30mm
141mm
45mm
17mm
1.0X
40mm
30mm
114mm
32mm**
17mm
M43 x 0.75mm
M37 x 0.75mm
1.75 (#56-870)
2.25 (#56-871)
2X .375
mounting clamps
.250
Silver Series Mounting Clamp, 1.75” Centerline
1.750
6X Ø .312
Counterbore
Silver Series Mounting Clamp, 2.25” Centerline
1.875
#56-870
#56-871
Mounting Brackets #56-870 & #56-871
.778 .375 .778
.375
Radius .945
2X .375
Radius .5906
+.0005
–.0000
2X .375
2X 1.000
.188
2X 8-32 UNC-2B
.200 Deep
.937
Radius .5906
1.000
3X 8-32 UNC-2B
Thru
5X ¹⁄₄-20 UNC-2B
.250 Deep
1.75 (#56-870)
2.25 (#56-871)
1.688
.250
1.750
.875
6X Ø .3121.563 1.750
Counterbore
6X Ø.188
Thru
6X Ø .312
Counterbore
2X Ø.281
Thru
1.875
Bottom View
Front View
o
8-32 UNC-2B
4X 8-32 UNC-2B Permit Imaging at 90 Degrees from 4X
Mirror or Prism Option
Normal
o
Easily Attaches
to the Front
of Most EO Telecentrics
.188
.438
2X 1.000
2X .375
.937
.438
Decreases System
Length by Changing Path Direction
1.000
1.000
1.688
Units: Inches
2X 1.000
.188
.937
1.688
The Telecentric5X ¹⁄₄-20
Accessories
attach to the front of Edmund Optics’5XTelecentric
lenses to allow the camera to be mounted 90
¹⁄₄-20 UNC-2B
UNC-2B
.250 Deep
.250 Deep
.188
degrees from normal
systems.
By
altering
the
angle,
the
camera
and lens6XThruØ.188
can be moved away from congested
6X Ø.188
.188 for inspections
Thru
.875
.875
2X Ø.281
1.563
2X Ø.281components. These accessories will change
1.563
inspection areas, leaving room
for other
the working
distances of the lenses they atThru
Thru
tach to. The prism will offer the longest working distance, and the mirror will offer the shortest working distance. The beamsplitter
combines two separate paths, and the camera will image them superimposed together. The camera can then utilize the 2nd light
path as a reference marker, for a triggering function, or measurement feature. NOTE: An adapter is required for each lens.
silver series Telecentric Accessories
GOLD series Telecentric Accessories
Silver Series Right Angle Mirror
Silver Series Right Angle Prism
Silver Series Beamsplitter
#62-749
#62-745
#62-747
Silver Series Adapter for 0.3X and 0.4X Lenses
Silver Series Adapter for 0.5X Lenses
Silver Series Adapter for 0.6X Lenses
Silver Series Adapter for 1X HP Lenses
Silver Series Adapter for 2X HP Lenses
Silver Series Adapter for 4X HP Lenses
#62-755
#62-753
#62-754
#62-753
#62-755
#62-756
Gold Series Right Angle Mirror
#62-750
Gold Series Right Angle Prism
#62-746
Gold Series Beamsplitter
#62-748
Gold Series Adapter for 0.5X and 0.36X Lenses
#62-751
Gold Series Adapter for 1X and 0.73X Lenses
#62-752
Contact us Today for A Volume or Custom Quote
800.363.1992 | www.edmundoptics.com
® COPYRIGHT 2009 EDMUND OPTICS, INC. ALL RIGHTS RESERVED 1/09
o
1.75 (#56-870)
2.25 (#56-871)
3X 8-32 UNC-2B
Thru
1.875
Side View
2X .375
2X 45.00°
+.0005
–.0000
2X .375
.188
.250
Radius .945
2X 45.00°
.438
2X 8-32 UNC-2B
.200 Deep
.778
.778
4X 8-32 UNC-2B
techspec® silver serieS high power
techspec® silver series telecentric lenses
Techspec® silver series high power telecentric lenses – field of view and resolutions
Primary
Magnification
4.0X
mm
2.0X
inch
1.0X
mm
inch
mm
inch
Z\v” 640x480:
FOV
0.90
0.04
1.79
0.07
3.58
0.14
Pixel Res.*
1.40
0.0001
2.80
0.0001
5.60
0.0002
Z\c” 640x480:
FOV
1.18
0.05
2.37
0.09
4.74
0.19
Pixel Res.*
1.85
0.0001
3.70
0.0001
7.40
0.0003
Z\c” 1024x768:
FOV
1.19
0.05
2.38
0.09
4.76
0.19
Pixel Res.*
1.16
0.00005
2.33
0.0001
4.65
0.0002
FOV
1.58
0.0625
3.17
0.125
6.39
0.25
Pixel Res.*
2.47
0.0001
4.95
0.0002
9.9
0.0004
FOV
1.49
0.06
2.98
0.12
5.95
0.23
Pixel Res.*
1.16
0.00005
2.33
0.0001
4.65
0.0002
Z\x” 640x480:
Z\x” 1280x1024:
FOV
1.76
0.07
3.52
0.14
7.04
0.28
Pixel Res.*
1.10
0.00004
2.20
0.0001
4.40
0.0002
* Metric pixel resoultion is in microns
techspec® silver series high power telecentric lenses – Specifications
Primary Magnification:
4.0X
2.0X
1.0X
Working Distance (±3mm):
44mm
75mm
83mm
Res. (Image Space @ F10):
>40% at 40lp/mm
>40% at 40lp/mm
>40% at 40lp/mm
<0.1°
<0.1°
<0.1°
Telecentricity:
Distortion (Max.):
DOF (10%@20lp/mm):
Aperture (f/#):
Lens Element Coating:
Lens Stock Number
<0.3%
<0.3%
<0.3%
±0.03mm at F10
±0.13mm at F10
±0.5mm at F10
F6 - Closed
F6 - Closed
F6 - Closed
BBAR from 425-675nm
BBAR from 425-675nm
BBAR from 425-675nm
#58-432
#58-431
#58-430
Contact us Today for A Volume or Custom Quote
800.363.1992 | www.edmundoptics.com
® COPYRIGHT 2009 EDMUND OPTICS, INC. ALL RIGHTS RESERVED 1/09
Z\z.,” 1600x1200:
Using telecentric lenses
Perspective errors, also called parallax, are part of everyday human experience. In
fact, this is what allows the brain to interpret the 3-D world. We expect closer objects
to appear relatively larger than those placed farther away. This phenomenon is also
present in conventional imaging systems in which the magnification of the object
changes with its distance from the lens. Telecentric lenses optically correct for this
occurrence so that objects remain the same perceived size independent of their location in space.
F-STOP
ADVANTAGES:
oConstant Magnification
within Depth of Field
oNo Perspective Error
DISADVANTAGES:
oChange of Magnification
within Depth of Field
oPerspective Error
Applications:
oMetrology
Applications:
oImaging Large Optics
o
DISADVANTAGES:
oHigher Cost
oLarger Lens Diameter
oLarger Weight
CCD Based Measurement
o
Microlithography
Accurate Measurement: Alignment of Jumper pins
S
U
C
FO
Telecentric Lens
P
TO
F-S
techspec® silver series telecentric lenses
ADVANTAGES:
o Lower Cost
o Greater General Availability
o Greater Flexibility
FOCUS
Object
Non-Telecentric
Region
Non-Telecentric
Region
Object
Telecentric
Region
45ϒ
Image A: Conventional Lens
Image B: Telecentric Lens
With the field of computer technology growing exponentially, and trends moving
towards smaller and smaller components, the order of precision needed in aligning computer components becomes even more critical. A traditional lens’ perspective errors become more noticeable when dealing with such minute detail.
In Image A above, we see a conventional lens viewing the jumper pins of a
typical computer circuit board at a 45° angle. As clearly shown, the lens begins
to introduce perspective errors and the angled pins begin to slant toward the
center of the field-of-view. An observer analyzing the distances between these
pins for alignment purposes would get errors in their calculations. Perspective
error in this example is 3%, but can be much higher for other applications.
Image B shows the same pins through a telecentric lens. In this captured image, the angled pins show their accurate distances and perspective errors are
eliminated. With the use of a telecentric lens, correct and consistent distances
can be determined and a higher degree of accuracy achieved. The reasoning behind this stems from a constant magnification that occurs as the distance from
the lens changes. This allows the user to maintain the correct perspective over a
change in height or a change in slope.
Nominal Diameter
An electronic imaging system is used to measure the diameter of metal posts, which can vary in height
by as much as 25mm. The posts are placed in a mounting fixture and measured using the 0.5X Telecentric
lens (#54-798). The IMAQ™ Vision Builder software is calibrated using our Concentric Square Target (#46248). Even though the objects are different heights, the software does not have to be recalibrated for
each post under inspection. As long as the top of the post is within the telecentric working distance, the
magnification is constant and the calibration file is valid. This saves valuable time in software set up. The
measurements of two different posts, with known same diameter, were as follows:
Diameter Tolerance
Post 1
Post 2
An error of only 1 pixel is typical in electronic
measurements made at the same object height –
however, in this example the objects were at two
different heights and the only thing that changed
was the focus. The diameter difference of 0.03mm
is well within the 0.1° telecentricity specification.
Image Size = 640 [H] x 480 [V] pixels using National Instruments capture board and Sony XC-ST70 camera (X\c” CCD)
FOV = 17.6 [H] x 13.2 [V] mm
Working Distance of Post 1 = 117mm
Working Distance of Post 2 = 142mm
Diameter of Post 1 = 5.05mm
Diameter of Post 2 = 5.02mm
∆ Diameter = 0.03mm
17.6mm = 0.0275mm/pixel so, ∆ Diameter = 1.09 pixels
640 pixels
Contact us Today for A Volume or Custom Quote
800.363.1992 | www.edmundoptics.com
® COPYRIGHT 2009 EDMUND OPTICS, INC. ALL RIGHTS RESERVED 1/09
Real world application example
techspec® gold
series telecentric
measuring lenses
Edmund Optics Inc.
USA | UK | France | Germany | Japan | Singapore | China | Korea | Italy
Important tools for machine vision systems and metrology applications,
telecentric lenses yield images from which precise measurements can
techspec® GOLD series telecentric lenses
be taken. We offer TECHSPEC® Gold Series Telecentric Lenses, for either X\c” or Z\x” format sensor sizes. The X\c” Format Series includes 5
lenses for use with either X\c” or smaller size sensors. The Z\x” Format
Series includes 4 lenses for use with Z\x” or smaller size sensors. The
new Z\x” series maximizes field coverage, matching the optimum field
of view of the X\c” sensor and allowing for larger fields with smaller sensor formats. The Gold Series yield constant magnification over a defined
depth of field and are optimized to provide <0.1°* telecentricity when
used in the specified working distance range. Also within the specified working distance, the same magnification can be obtained simply
by refocusing. Because maximum field of view in telecentric systems
directly relates to the lens aperture closest to the object, larger front
lenses are necessary for larger fields of view.
All of our TECHSPEC® Gold Series Telecentric Lenses have a front
filter thread for easy integration with color filters, polarizers, or other
mounted components used for maching vision optimization. Both the
aperture and focusing adjustment positions can be fixed by set screws
o
Designed Specifically for Machine Vision Applications
o
<0.1°* Telecentricity
o
High Resolution and Low Distortion
o
Contact our OEM Sales Department for Quantity Pricing
o
Max. Sensor Size X\c” or Z\x” Format Series
to remain secure in high vibration environments.
*0.08x lens provides <0.2° telecentricity
Techspec® gold series telecentric lenses
**Horizontal
1.0X
0.73X
0.5X
0.36X
0.25X
0.18X
0.125X
0.09X
0.08X
Field of View, X\c” CCD**:
8.8mm
—
17.6mm
—
35.2mm
—
70.4mm
—
110.0mm
Field of View, Z\x” CCD**:
6.4mm
8.8mm
12.8mm
17.6mm
25.6mm
35.2mm
51.2mm
70.4mm
80.0mm
98mm-123mm
98mm-123mm
117mm-142mm
117mm-142mm
161mm-186mm
136mm-186mm
132mm-182mm
132mm-182mm
170mm-220mm
Working Distance:
Res. (MTF Image Space @ F10): >50% @ 40lp/mm >65% @ 40lp/mm >55% @ 40lp/mm >70% @ 40lp/mm >55% @ 40lp/mm >60% @ 40lp/mm >45% @ 40lp/mm >60% @ 40lp/mm >65% @ 40lp/mm
Telecentricity:
Distortion:
DOF (20% @ 20lp/mm):
Aperture (f/#):
Size (Max OD x L):
<0.1º
<0.1°
<0.1º
<0.1°
<0.1º
<0.1°
<0.1º
<0.1°
<0.2º
0.10% Max
0.10% Max
0.10% Max
0.10% Max
0.50% Max
0.2% Max
0.50% Max
0.1% Max
0.35% Max
±0.6mm at F10
±1mm at F10
±2.1mm at F10
±3.9mm at F10
±8.5mm at F10
±16mm at F10
±35mm at F10
±64mm at F10
±82.5mm at F10
F6-F25
F6-19.5
F6-F25
F6-18
F6-F25
F6-18
F6-F25
F6-17.4
F6-F25
68 x 200mm
68 x 200mm
65 x 150mm
65 x 150mm
79 x 196mm
79 x 196mm
110 x 200mm
110 x 200mm
160 x 277mm
M62 x 0.75mm
M62 x 0.75mm
M58 x 0.75mm
M58 x 0.75mm
M72 x 0.75mm
M72 x 0.75mm
M105 x 1.0mm
M105 x 1.0mm
M154 x 1.0mm
Lens Stock No.
#55-350
#58-256
#54-798
#58-257
#55-349
#58-258
#55-348
#58-259
#56-948
Mounting Clamp Stock No.
#56-024
#56-024
#56-025
#56-025
#56-026
#56-026
#56-027
#56-027
Mount Included
Color Filter - Red
#46-532
#46-532
#54-765
#54-765
#46-535
#46-535
—
—
—
Color Filter - Green
#46-533
#46-533
#54-771
#54-771
#46-536
#46-536
—
—
—
Color Filter - Blue
—
—
#54-777
#54-777
—
—
—
—
—
Filter Size:
Contact us Today for A Volume or Custom Quote
800.363.1992 | www.edmundoptics.com
® COPYRIGHT 2009 EDMUND OPTICS, INC. ALL RIGHTS RESERVED 1/09
Primary Magnification: