Lenses

Telecentric lenses

How to choose a telecentric lens

Telecentric and bi-telecentric lenses keep magnification constant through the depth of field, so parts measure the same size wherever they sit. Pick by magnification (sensor size / field of view), working distance and the largest sensor you use.

Shop by sensor format: 4/3-inch telecentric lenses · 1.1-inch telecentric lenses · 1-inch telecentric lenses · 2/3-inch telecentric lenses · 1/1.8-inch telecentric lenses · 1/2-inch telecentric lenses · 1/2.5-inch telecentric lenses · APS-C telecentric lenses · APS-H telecentric lenses · Full frame telecentric lenses
Shop by mount: F-mount telecentric lenses · M58-mount telecentric lenses · M42-mount telecentric lenses · M72-mount telecentric lenses
Shop by magnification: 0.1x telecentric lenses · 0.2x telecentric lenses · 0.3x telecentric lenses · 0.4x telecentric lenses · 0.5x telecentric lenses · 0.6x telecentric lenses · 0.7x telecentric lenses · 0.8x telecentric lenses · 1x telecentric lenses · 1.5x telecentric lenses · 2x telecentric lenses · 2.5x telecentric lenses · 3x telecentric lenses · 4x telecentric lenses · 6x telecentric lenses

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Telecentric lenses

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LS-TCL-02320.074× telecentric lens, 1/1.2", C-mount 0.074×C-mount1/1.2"396 mm69 μm96.35 x 72.03 mm$7,229.00Quote Lead time confirmed with your quote
LS-TCL-02300.114× telecentric lens, 1/1.2", C-mount, 13.3 mm image circle 0.114×C-mount1/1.2"278.6 mm45 μm62.54 x 46.75 mm$4,739.00Quote Lead time confirmed with your quote
LS-TCL-02290.134× telecentric lens, 1/1.2", C-mount, 13.3 mm image circle, 305.4 mm long 0.134×C-mount1/1.2"226.8 mm38 μm53.21 x 39.78 mm$3,919.00Quote Lead time confirmed with your quote
LS-TCL-02270.19× telecentric lens, 1/1.2", C-mount, 13.3 mm image circle 0.19×C-mount1/1.2"157.8 mm27 μm37.53 x 28.05 mm$3,139.00Quote Lead time confirmed with your quote
LS-TCL-02280.166× telecentric lens, 1/1.2", C-mount, 13.3 mm image circle 0.166×C-mount1/1.2"181.9 mm31 μm42.95 x 32.11 mm$3,399.00Quote Lead time confirmed with your quote
LS-TCL-02240.424× telecentric lens, 1/1.2", C-mount 0.424×C-mount1/1.2"67.2 mm16 μm16.82 x 12.57 mm$2,489.00Quote Lead time confirmed with your quote
LS-TCL-02260.222× telecentric lens, 1/1.2", C-mount, 215.9 x 75 x 75 mm 0.222×C-mount1/1.2"132.4 mm23 μm32.12 x 24.01 mm$2,879.00Quote Lead time confirmed with your quote
LS-TCL-02220.116× telecentric lens, 35 mm Full Frame, M58-mount, 1069.8 x 417 x 417 mm 0.116×M58Full frame500 mm44 μm-$53,609.00Quote Lead time confirmed with your quote
LS-TCL-02230.639× telecentric lens, 1/1.2", C-mount 0.639×C-mount1/1.2"44.3 mm11 μm11.16 x 8.34 mm$2,349.00Quote Lead time confirmed with your quote
LS-TCL-02250.295× telecentric lens, 1/1.2", C-mount 0.295×C-mount1/1.2"102.6 mm24 μm24.17 x 18.07 mm$2,749.00Quote Lead time confirmed with your quote
LS-TCL-02170.15× telecentric lens, 35 mm Full Frame, F-mount 0.15×F-mountFull frame542.8 mm68 μm-$16,469.00Quote Lead time confirmed with your quote
LS-TCL-02210.116× telecentric lens, 35 mm Full Frame, M58-mount, 1062.4 x 417 x 417 mm 0.116×M58Full frame500 mm44 μm-$53,609.00Quote Lead time confirmed with your quote
LS-TCL-02200.116× telecentric lens, 35 mm Full Frame, F-mount 0.116×F-mountFull frame500 mm44 μm-$53,609.00Quote Lead time confirmed with your quote
LS-TCL-02190.15× telecentric lens, 35 mm Full Frame, M58-mount, 938.7 x 322 x 322 mm 0.15×M58Full frame542.8 mm68 μm-$16,469.00Quote Lead time confirmed with your quote
LS-TCL-02180.15× telecentric lens, 35 mm Full Frame, M58-mount, 932.3 x 322 x 322 mm 0.15×M58Full frame542.8 mm68 μm-$16,469.00Quote Lead time confirmed with your quote
LS-TCL-02150.187× telecentric lens, 35 mm Full Frame, M58-mount, 775.1 x 260 x 260 mm 0.187×M58Full frame457.5 mm54 μm-$13,329.00Quote Lead time confirmed with your quote
LS-TCL-02160.187× telecentric lens, 35 mm Full Frame, M58-mount, 781.5 x 260 x 260 mm 0.187×M58Full frame457.5 mm54 μm-$13,329.00Quote Lead time confirmed with your quote
LS-TCL-02120.245× telecentric lens, 35 mm Full Frame, M58-mount, 631.3 x 200 x 200 mm 0.245×M58Full frame397.4 mm41 μm-$8,919.00Quote Lead time confirmed with your quote
LS-TCL-02110.245× telecentric lens, 35 mm Full Frame, F-mount 0.245×F-mountFull frame397.4 mm41 μm-$8,919.00Quote Lead time confirmed with your quote
LS-TCL-02130.245× telecentric lens, 35 mm Full Frame, M58-mount, 637.7 x 200 x 200 mm 0.245×M58Full frame397.4 mm41 μm-$8,919.00Quote Lead time confirmed with your quote
LS-TCL-02100.289× telecentric lens, 35 mm Full Frame, M58-mount, 578.1 x 180 x 180 mm 0.289×M58Full frame331.6 mm35 μm-$7,669.00Quote Lead time confirmed with your quote
LS-TCL-02140.187× telecentric lens, 35 mm Full Frame, F-mount 0.187×F-mountFull frame457.5 mm54 μm-$13,329.00Quote Lead time confirmed with your quote
LS-TCL-02070.38× telecentric lens, 35 mm Full Frame, M58-mount, 489.1 x 143 x 143 mm 0.38×M58Full frame262.3 mm27 μm-$6,789.00Quote Lead time confirmed with your quote
LS-TCL-02060.38× telecentric lens, 35 mm Full Frame, M58-mount, 482.7 x 143 x 143 mm 0.38×M58Full frame262.3 mm27 μm-$6,789.00Quote Lead time confirmed with your quote

How to choose a telecentric lens

A telecentric lens keeps the image size of the part constant when the part moves closer or farther within the depth of field, and removes perspective, so edges and holes are measured at their true size. Choose by magnification, sensor and working distance.

1. Magnification = sensor size / field of view

The field of view is the sensor size divided by the magnification. Pick the magnification that fits the part with a small margin, or let the telecentric lens calculator work it out for your sensor and part:

MagnificationField of view, 2/3-inch sensor (8.8 x 6.6 mm)Field of view, 1.1-inch sensor (14.1 x 10.3 mm)
0.1x88 x 66 mm141 x 103 mm
0.2x44 x 33 mm70.5 x 51.5 mm
0.3x29.3 x 22 mm47 x 34.3 mm
0.5x17.6 x 13.2 mm28.2 x 20.6 mm
0.8x11 x 8.3 mm17.6 x 12.9 mm
1x8.8 x 6.6 mm14.1 x 10.3 mm
2x4.4 x 3.3 mm7.1 x 5.2 mm
4x2.2 x 1.7 mm3.5 x 2.6 mm

2. Sensor format

The lens must be rated for the camera's sensor format or larger, or the corners go dark. Larger sensors need larger (and longer) lenses with F-mount or M58 / M72 mounts.

3. Object-side or bi-telecentric

Object-side telecentric lenses keep the magnification constant as the part moves. Bi-telecentric lenses are telecentric on the camera side too, so small focus changes and sensor tilt do not change the size either: the choice for the highest measuring accuracy.

4. Working distance, depth of field, front size

Check the working distance against the space in the machine, and the depth of field against how much the part height varies. The front of the lens must be larger than the field of view - a telecentric lens only sees what fits in front of it.

5. Lighting

For silhouettes, pair the lens with a collimated backlight: parallel light gives the sharpest edges. For surface features use a coaxial light that fits the lens.