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  • PTTC, PTCP series

PTTC, PTCP series

Accurate calibration patterns for machine vision

Opto Engineering® CATALOG

PT120-240 calibrations pattern has been substituted by PT120-144 for FOVs up to 170x140mm and by PT192-240 for FOVs of up to 260 x 200mm.

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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.

 
Calibration pattern series

It’s possible to calculate dimensional tolerance of pattern’s features is calculated as follows:

Dimensional Tolerance = ± (A + B * C)

A = Positioning error

B = Speed factor

C = Dimension of interest

Example of dimensional tolerance for grade 2 pattern over 10mm length:

Dimensional Tolerance = ± 0.0016mm + (±0.000008mm x 10 mm) = ± 0.00168 mm

For Chrome-on-glass Photomask
ClassMin feature dimensions; Min spacing(µm)Positioning error (µm)Speed factor (µm/mm)
11.46.40.016
20.81.60.008
30.40.60.004
40.20.20.001
For Film-on-glass Photomask
GradeMin feature dimensions; Min spacing(µm)Positioning error (µm)Speed factor (µm/mm)
19.69.60.015
24.89.60.015
32.49.60.015
41.29.60.015
Specifications Compatible products
Part
number
Dimensions Thickness Active
area
Squares
width
Photomask
type
Substrate Class Grade Certificate Compatible
telecentric
lenses
(W x H) (Wa x Ha) (Ws) (part number ending in)
(mm x mm) (mm) (mm x mm) (mm) (mm) (mm)
1 1 2
PT004-009 33 x 26 3 15 x 13 0.2 Chrome-on-glass Soda lime glass 1 - No 004, 007, 009 Quote
PT016-024 33 x 26 3 31 x 24 0.6 Chrome-on-glass Soda lime glass 1 - No 016, 024 Quote
PT036-056 66 x 52 3 64 x 51 1.35 Chrome-on-glass Soda lime glass 1 - No 036, 048, 056 Quote
PT064-096 107 x 83 3 105 x 79 2.2 Chrome-on-glass Soda lime glass 1 - No 064, 072, 080, 085, 096 Quote
PT120-144 180 x 140 3 170 x 140 3 Chrome-on-glass Soda lime glass 2 - No 110, 120, 130, 144 Quote
PT192-240 300 x 240 3 260 x 200 4 Chrome-on-glass Soda lime glass - B No 192, 200, 240 Quote
PT260-310 340 x 280 3 320 x 260 5 Chrome-on-glass Soda lime glass - B No 308 Quote
PT004-009-C 33 x 26 3 15 x 13 0.2 Chrome-on-glass Soda lime glass 2 - Yes 004, 007, 009 Quote
PT016-024-C 33 x 26 3 31 x 24 0.6 Chrome-on-glass Soda lime glass 2 - Yes 016, 024 Quote
PT036-056-C 66 x 52 3 64 x 51 1.35 Chrome-on-glass Soda lime glass 2 - Yes 036, 048, 056 Quote
PT064-096-C 107 x 83 3 105 x 79 2.2 Chrome-on-glass Soda lime glass 2 - Yes 064, 072, 080, 085, 096 Quote
PT120-144-C 180 x 140 3 170 x 140 3 Chrome-on-glass Soda lime glass 2 - Yes 110, 120, 130, 144 Quote
PT192-240-C 300 x 240 3 260 x 200 4 Chrome-on-glass Soda lime glass - B Yes 192, 200, 240 Quote
PT260-310-C 340 x 280 3 320 x 260 5 Chrome-on-glass Soda lime glass - B Yes 308 Quote
PT064-096-P 107 x 83 3 105 x 79 2.2 Film-on-glass Soda lime glass - 4 No 064, 072, 080, 085, 096 Quote
PT120-144-P 180 x 140 3 170 x 140 3 Film-on-glass Soda lime glass - 4 No 110, 120, 130, 144 Quote
PT192-240-P 300 x 240 3 260 x 200 4 Film-on-glass Soda lime glass - 4 No 192, 200, 240 Quote
PT260-310-P 340 x 280 3 320 x 260 5 Film-on-glass Soda lime glass - 4 No 308 Quote
PTCP-S1-HR1-C 180 x 140 3 167.4 x 129.6 1.35 Chrome-on-glass Soda lime glass 2 - Yes TCCP12144, TCCP23144, TCCP3MHR144, TCCP5MHR144 Quote
PTCP-M1-LR1-C 245 x 196 3 237.6 x 184.8 2.2 Chrome-on-glass Soda lime glass - B Yes TCCP12192, TCCP23192 Quote
PTCP-M1-HR1-C 245 x 196 3 237.6 x 189.0 1.35 Chrome-on-glass Soda lime glass - B Yes TCCP3MHR192, TCCP5MHR192 Quote
PTCP-L1-LR1-C 300 x 240 3 281.6 x 228.8 2.2 Chrome-on-glass Soda lime glass - B Yes TCCP12260, TCCP23260 Quote
PTCP-L1-HR1-C 300 x 240 3 286.2 x 226.8 1.35 Chrome-on-glass Soda lime glass - B Yes TCCP3MHR260, TCCP5MHR260 Quote
PTCP-S1-HR1-P 180 x 140 3 167.4 x 129.6 1.35 Film-on-glass Soda lime glass - 4 No TCCP12144, TCCP23144, TCCP3MHR144, TCCP5MHR144 Quote
PTCP-M1-LR1-P 245 x 196 3 237.6 x 184.8 2.2 Film-on-glass Soda lime glass - 4 No TCCP12192, TCCP23192 Quote
PTCP-M1-HR1-P 245 x 196 3 237.6 x 189.0 1.35 Film-on-glass Soda lime glass - 4 No TCCP3MHR192, TCCP5MHR192 Quote
PTCP-L1-LR1-P 300 x 240 3 281.6 x 228.8 2.2 Film-on-glass Soda lime glass - 4 No TCCP12260, TCCP23260 Quote
PTCP-L1-HR1-P 300 x 240 3 286.2 x 226.8 1.35 Film-on-glass Soda lime glass - 4 No TCCP3MHR260, TCCP5MHR260 Quote
Last update 08 Jun 2022

Notes

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

Technical documents

Product user guide
pdf
CoC Format
pdf
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