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Home Optics Telecentric lenses TC12M series
Compatible products
Main optical specifications
Magnification (x) 0.100
Image circle diameter (mm) 37.2
Max sensor size 2.4″
Object field of view
PYTHON 16K (mm × mm) 184.32 x 184.32
APS-C IMX342 (mm × mm) 223.60 x 167.70
Line 4k-7µm (mm) 286.70
APS-H PYTHON 25K (mm × mm) 230.40 x 230.40
Advanced optical specifications
Working distance (1) (mm) 500.0
Working ƒ/N (2) 8
Telecentricity typical (max) (3) (deg) <0.10 (0.15)
Distortion typical (max) (4) (%) <0.10 (0.15)
Depth of field (5) (mm) 66.00
Resolution (6) (μm) 51
Mechanical specifications
Mount (7) F
Phase adjustment (8) Yes
Length (9) (mm) 1001.0
Front diameter (mm) 417
Mass (g) 38862

Last update 05 Sep 2023



  1. Working distance: distance between the front end of the mechanics and the object. Set this distance within ±3% of the nominal value for maximum resolution and minimum distortion.
  2. Working f-number (wf/N): the real f-number of a lens in operating conditions.
  3. Maximum angle between chief rays and optical axis on the object side. Typical (average production) values and maximum (guaranteed) values are listed.
  4. Percent deviation of the real image compared to an ideal, undistorted image. Typical (average production) values and maximum (guaranteed) values are listed.
  5. At the borders of the field depth the image can be still used for measurement but, to get a very sharp image, only half of the nominal field depth should be considered. Pixel size used for calculation is 5.5 μm.
  6. Object side, calculated with the Rayleigh criterion with λ= 520 nm
  7. FD stands for Flange Distance (in mm), defined as the distance from the mounting flange (the “metal ring” in rear part of the lens) to the camera detector plane.
  8. Indicates the availability of an integrated camera phase adjustment feature.
  9. Measured from the front end of the mechanics to the camera flange.
All product specifications and data are subject to change without notice to improve reliability, functionality, design or other. Photos and pictures are for illustration purposes only.

Technical documents

Product user guide
Back focal adjustment


Download datasheet

Layout files

Despite the efforts made to generate an error-free compatibility list, we always recommend to consult the Opto Engineering® technical support department before purchasing a compatible product. Opto Engineering® shall not be liable for any damage or malfunctioning caused by the incorrect selection of a compatible product.
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Calibration pattern
Checkerboard calibration pattern for telecentric lens with certificate
Calibration pattern
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