Any machine vision lens (either telecentric or not) shows some amount of distortion. In addition to barrel or pincushion distortion, changes in the view angle or misaligned components will affect the image symmetry and generate the so called thin prism or keystone effect.

Imaging and metrology applications often require to minimize distortion, which can be software-corrected by analyzing the image of a precision pattern whose geometrical features are well known.

For this reason Opto Engineering® offers a full range of patterns optimized for software calibration compatible with most Opto Engineering® telecentric lenses.

The chessboards are realized with two different processes in order to provide the best solution depending on the requirements:

Chrome on glass, for leading edge applications;
Emulsion on glass, for a perfect synthesis of performance and cost effectiveness.

Moreover, a certified version is available: standards and equipment used for calibration have been calibrated traceable to the National Institute of Standards and Technology (N.I.S.T.), in accordance with procedures set forth in ISO/IEC 17025-2005 and ANSI/NCSL Z540-1-1994.

	Compatibility		Mechanical specifications
Part number	Compatible telecentric lenses	Compatible CMPH pattern mounts	Dimensions width × height	Thickness	Active area width × height	Squares width	Photomask type	Class	Grade	Certificate
	Part numbers ending in		(mm × mm)	(mm)	(mm × mm)	(mm)
								1	1	2
PT004-009Checkerboard calibration pattern, chrome-on-glass photomask, active area 15x13 mm	004, 007 and 009	CMPH 004-024	33 x 26	3	15 x 13	0.20	Glass	1	-	No	Quote
PT016-024Checkerboard calibration pattern, chrome-on-glass photomask, active area 31x24 mm	016, 024	CMPH 004-024	33 x 26	3	31 x 24	0.60	Glass	1	-	No	Quote
PT036-056Checkerboard calibration pattern, chrome-on-glass photomask, active area 64x51 mm	036, 048 and 056	CMPH 036-056	66 x 52	3	64 x 51	1.35	Glass	1	-	No	Quote
PT064-096Checkerboard calibration pattern, chrome-on-glass photomask, active area 105x79 mm	064, 072, 080, 085 and 096	CMPH064-096, CMTS064-096	107 x 83	3	105 x 79	2.20	Glass	1	-	No	Quote
PT120-144Checkerboard calibration pattern, chrome-on-glass photomask, active area 170x140 mm	110, 120, 130 and 144	-	180 x 140	3	170 x 140	3.00	Glass	2	-	No	Quote
PT192-240Checkerboard calibration pattern, chrome-on-glass photomask, active area 260x200 mm	192, 200, 240	-	300 x 240	3	260 x 200	4.00	Glass	2	-	No	Quote
PT260-310Checkerboard calibration pattern, chrome-on-glass photomask, active area 320x260 mm	-	-	340 x 280	3	320 x 260	5.00	Glass	2	-	No	Quote
PT004-009-CCheckerboard calibration pattern with certificate, chrome-on-glass photomask, active area 15x13 mm	004, 007 and 009	CMPH 004-024	33 x 26	3	15 x 13	0.20	Glass	2	-	Yes	Quote
PT016-024-CCheckerboard calibration pattern with certificate, chrome-on-glass photomask, active area 31x24 mm	016, 024	CMPH 004-024	33 x 26	3	31 x 24	0.60	Glass	2	-	Yes	Quote
PT036-056-CCheckerboard calibration pattern with certificate, chrome-on-glass photomask, active area 64x51 mm	036, 048 and 056	CMPH 036-056	66 x 52	3	64 x 51	1.35	Glass	2	-	Yes	Quote
PT064-096-CCheckerboard calibration pattern with certificate, chrome-on-glass photomask, active area 105x79 mm	064, 072, 080, 085 and 096	CMPH064-096, CMTS064-096	107 x 83	3	105 x 79	2.20	Glass	2	-	Yes	Quote
PT120-144-CCheckerboard calibration pattern with certificate, chrome-on-glass photomask, active area 170x140 mm	110, 120, 130 and 144	-	180 x 140	3	170 x 140	3.00	Glass	2	-	Yes	Quote
PT192-240-CCheckerboard calibration pattern with certificate, chrome-on-glass photomask, active area 260x200 mm	192, 200, 240	-	300 x 240	3	260 x 200	4.00	Glass	2	-	Yes	Quote
PT260-310-CCheckerboard calibration pattern with certificate, chrome-on-glass photomask, active area 320x260 mm	-	-	340 x 280	3	320 x 260	5.00	Glass	2	-	Yes	Quote
PT004-009-PCheckerboard calibration pattern, film-on-glass photomask, active area 15x13 mm	004, 007 and 009	CMPH 004-024	33 x 26	3	15 x 13	0.20	Film	-	4	No	Quote
PT016-024-PCheckerboard calibration pattern, film-on-glass photomask, active area 31x24 mm	016, 024	CMPH 004-024	33 x 26	3	31 x 24	0.60	Film	-	4	No	Quote
PT036-056-PCheckerboard calibration pattern, film-on-glass photomask, active area 64x51 mm	036, 048 and 056	CMPH 036-056	66 x 52	3	64 x 51	1.35	Film	-	4	No	Quote
PT064-096-PCheckerboard calibration pattern, film-on-glass photomask, active area 105x79 mm	064, 072, 080, 085 and 096	CMPH064-096, CMTS064-096	107 x 83	3	105 x 79	2.20	Film	-	4	No	Quote
PT120-144-PCheckerboard calibration pattern, film-on-glass photomask, active area 170x140 mm	110, 120, 130 and 144	-	180 x 140	3	170 x 140	3.00	Film	-	4	No	Quote
PT192-240-PCheckerboard calibration pattern, film-on-glass photomask, active area 260x200 mm	192, 200, 240	-	300 x 240	3	260 x 200	4.00	Film	-	4	No	Quote
PT260-310-PCheckerboard calibration pattern, film-on-glass photomask, active area 320x260 mm	-	-	340 x 280	3	320 x 260	5.00	Film	-	4	No	Quote
PTCP-L1-LR1-CCheckerboard calibration pattern, chrome-on-glass photomask, active area 281.6x228.8 mm	TCCP12260, TCCP23260	-	300 x 240	3	281.6 x 228.8	2.20	Glass	2	-	Yes	Quote
PTCP-L1-HR1-CCheckerboard calibration pattern, chrome-on-glass photomask, active area 286.2x226.8 mm	TCCP3MHR260, TCCP5MHR260	-	300 x 240	3	286.2 x 226.8	1.35	Glass	2	-	Yes	Quote
PTCP-S1-HR1-CCheckerboard calibration pattern, chrome-on-glass photomask, active area 167.4x129.6 mm	TCCP12144, TCCP23144, TCCP3MHR144, TCCP5MHR144	-	180 x 140	3	167.4 x 129.6	1.35	Glass	2	-	Yes	Quote
PTCP-M1-HR1-CCheckerboard calibration pattern, chrome-on-glass photomask, active area 237.6x189 mm	TCCP3MHR192, TCCP5MHR192	-	245 x 196	3	237.6 x 189	1.35	Glass	2	-	Yes	Quote
PTCP-M1-LR1-CCheckerboard calibration pattern, chrome-on-glass photomask, active area 237.6x184.8 mm	TCCP12192, TCCP23192	-	245 x 196	3	237.6 x 184.8	2.20	Glass	2	-	Yes	Quote
PTCP-S1-HR1-PCheckerboard calibration pattern, film-on-glass photomask, active area 167.4x129.6 mm	TCCP12144, TCCP23144, TCCP3MHR144, TCCP5MHR144	-	180 x 140	3	167.4 x 129.6	1.35	Film	-	4	No	Quote
PTCP-M1-LR1-PCheckerboard calibration pattern, film-on-glass photomask, active area 237.6x184.8 mm	TCCP12192, TCCP23192	-	245 x 195	3	237.6 x 184.8	2.20	Film	-	4	No	Quote
PTCP-M1-HR1-PCheckerboard calibration pattern, film-on-glass photomask, active area 237.6x189 mm	TCCP3MHR192, TCCP5MHR192	-	245 x 195	3	237.6 x 189	1.35	Film	-	4	No	Quote
PTCP-L1-LR1-PCheckerboard calibration pattern, film-on-glass photomask, active area 281.6x228.8 mm	TCCP12260, TCCP23260	-	300 x 240	3	281.6 x 228.8	2.20	Film	-	4	No	Quote
PTCP-L1-HR1-PCheckerboard calibration pattern, film-on-glass photomask, active area 286.2x226.8 mm	TCCP3MHR260, TCCP5MHR260	-	300 x 240	3	286.2 x 226.8	1.35	Film	-	4	No	Quote

Last update: 2021-06-22

Notes

Class number (2*) for Emulsion-on-glass photomasks differs from usual Chrome-on-glass. Specifications are in the tech info section.
Download CoC Format Pattern facsimile

Technical documents

Data table (Last update: :2021-06-22)

XLS

CoC Format Pattern 2019

Compatible products

TC telecentric lens for matrix detectors

Product images

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For Chrome-on-glass Photomask
Class	Min feature dimensions; Min spacing(µm)	Positioning error (µm)	Speed factor (µm/mm)
1	1.4	6.4	0.016
2	0.8	1.6	0.008
3	0.4	0.6	0.004
4	0.2	0.2	0.001

For Film-on-glass Photomask
Grade	Min feature dimensions; Min spacing(µm)	Positioning error (µm)	Speed factor (µm/mm)
1	9.6	9.6	0.015
2	4.8	9.6	0.015
3	2.4	9.6	0.015
4	1.2	9.6	0.015

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