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

2965 models Configure a systemAll lenses
Telecentric lenses

2401-2424 of 2965 models

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LS-TCL-20692.5x, WD 300 mm, 2/3", C-mount telecentric lens, length 244 mm 2.5xC-mount2/3"300 mmF42.3-$1,239.00 Ships in 2-3 weeks
LS-TCL-20702.5x, WD 300 mm, 2/3", C-mount telecentric lens, length 248.3 mm 2.5xC-mount2/3"300 mmF41-$1,239.00 Ships in 2-3 weeks
LS-TCL-19984x, WD 65 mm, 2/3", C-mount telecentric lens, length 106.2 mm 4.0xC-mount2/3"65 mmF17.9-$1,239.00 Ships in 2-3 weeks
LS-TCL-19974x, WD 65 mm, 2/3", C-mount telecentric lens, length 101.9 mm 4.0xC-mount2/3"65 mmF17.9No$1,239.00 Ships in 2-3 weeks
LS-TCL-20044x, WD 150 mm, 2/3", C-mount telecentric lens, coaxial port 4xC-mount2/3"150 mmF34Yes$1,239.00 Ships in 2-3 weeks
LS-TCL-20004x, WD 65 mm, 2/3", C-mount telecentric lens, length 106.2 mm 4.0xC-mount2/3"65 mmF17.9-$1,239.00 Ships in 2-3 weeks
LS-TCL-19994x, WD 65 mm, 2/3", C-mount telecentric lens, length 101.9 mm, coaxial port 4.0xC-mount2/3"65 mmF17.9Yes$1,239.00 Ships in 2-3 weeks
LS-TCL-20014x, WD 110 mm, 2/3", C-mount telecentric lens, length 128.8 mm 4xC-mount2/3"110 mmF25.6-$1,239.00 Ships in 2-3 weeks
LS-TCL-20024x, WD 110 mm, 2/3", C-mount telecentric lens, length 133.1 mm 4xC-mount2/3"110 mmF25.6-$1,239.00 Ships in 2-3 weeks
LS-TCL-20034x, WD 150 mm, 2/3", C-mount telecentric lens 4xC-mount2/3"150 mmF34No$1,239.00 Ships in 2-3 weeks
LS-TCL-19923x, WD 65 mm, 2/3", C-mount telecentric lens, length 84.7 mm, coaxial port 3xC-mount2/3"65 mmF20.2Yes$1,239.00 Ships in 2-3 weeks
LS-TCL-19552x, WD 200 mm, 1/2.5", C-mount telecentric lens, length 152.1 mm 2.0xC-mount1/2.5"200 mmF29.6-$1,239.00 Ships in 2-3 weeks
LS-TCL-19483x, WD 250 mm, 1/1.8", C-mount telecentric lens, coaxial port 3xC-mount1/1.8"250 mmF49.4Yes$1,239.00 Ships in 2-3 weeks
LS-TCL-19943x, WD 110 mm, 2/3", C-mount telecentric lens, length 121.9 mm 3xC-mount2/3"110 mmF18-$1,239.00 Ships in 2-3 weeks
LS-TCL-19913x, WD 65 mm, 2/3", C-mount telecentric lens, length 84.7 mm 3xC-mount2/3"65 mmF20.2No$1,239.00 Ships in 2-3 weeks
LS-TCL-19933x, WD 110 mm, 2/3", C-mount telecentric lens, length 117.6 mm 3xC-mount2/3"110 mmF18-$1,239.00 Ships in 2-3 weeks
LS-TCL-19542x, WD 200 mm, 1/2.5", C-mount telecentric lens, length 147.8 mm 2.0xC-mount1/2.5"200 mmF29.6-$1,239.00 Ships in 2-3 weeks
LS-TCL-19473x, WD 250 mm, 1/1.8", C-mount telecentric lens 3xC-mount1/1.8"250 mmF49.4No$1,239.00 Ships in 2-3 weeks
LS-TCL-20318x, WD 65 mm, 2/3", C-mount telecentric lens, length 129.7 mm 8.0xC-mount2/3"65 mmF31-$839.00 Ships in 2-3 weeks
LS-TCL-20338x, WD 65 mm, 2/3", C-mount telecentric lens, length 134.0 mm 8.0xC-mount2/3"65 mmF31-$839.00 Ships in 2-3 weeks
LS-TCL-19431.5x, WD 410 mm, 1/3", C-mount telecentric lens 1.5xC-mount1/3"410 mmF40-$1,299.00 Ships in 2-3 weeks
LS-TCL-20807.5x, WD 65 mm, 2/3", C-mount telecentric lens, length 132.4 mm 7.5xC-mount2/3"65 mmF32-$839.00 Ships in 2-3 weeks
LS-TCL-20196x, WD 110 mm, 2/3", C-mount telecentric lens, length 157 mm 6.0xC-mount2/3"110 mmF38.9-$849.00 Ships in 2-3 weeks
LS-TCL-20817.5x, WD 65 mm, 2/3", C-mount telecentric lens, length 132.4 mm 7.5xC-mount2/3"65 mmF32-$839.00 Ships in 2-3 weeks

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.