Bi-Telecentric Lens 4.000X for 22.0mm Sensor
Opto Engineering TC4M Series
$ 1,990.00 each
- Large image circle for sensors up to 21.5 mm diagonal
- Telecentric in both object and image space for maximum precision
- Excellent resolution and low distortion
- Simple, robust industrial design
- Each lens is factory tested and delivered with the test report
Telecentric lenses are the key component of accurate machine vision measurement systems. Unlike conventional lenses, optical magnification remains constant within the field of view and depth of field. This is especially important on the manufacturing floor, where part fixtures and camera triggers are seldom 100% repeatable.
This telecentric lens has been carefully re-designed to outperform the previous generation. It features unmatched resolution, low distortion, easy phase adjustment, and homogeneous image quality while offering the best performance to price ratio.
This lens is compatible with cameras having up to a 1.2" (21.5 mm diagonal) sensor. The lens is telecentric on both ends, hence the term “bi-telecentric”. With lenses only telecentric in object space, a small dot of light grows larger and becomes elliptical as it moves from the image sensor’s center towards its edge. This bi-telecentric lens keeps the principal rays parallel not only when entering but also when exiting the lens. The result is greater image precision.
The working distance (measured between the front of the lens and your object) should be kept within +/- 3% of the nominal value shown below for maximum resolution and minimum distortion. The f-number shown below is the “working” or “real” f-number of the lens when used as a macro.
Please contact us if you need a lens having a smaller aperture.
|Contact us for compatable filters.|
|Distortion:||< 0.10 %|
|Depth of Field:||0.10 mm|
|Telecentricity:||< 0.10 degrees|
|Working Distance:||56.0 mm|
|Image Circle:||22.00 mm|
For the sharpest image, keep the object within half the specified depth of field. The length is measured from the lens's front to its flange.