Machine Vision Lenses and Optics - STEMMER IMAGING

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Opto Engineering TC

Bi-telecentric lenses for matrix detectors up to 2/3''

Opto Engineering TC lense is suitable for aquiring images with high resolution and small pixel detectors like 5MP 2/3" detectors. The lens features very low distortion while their real bi-telecentricity makes them purely telecentric making TC lense ideal for measurement applications of mechanical parts ranging from extruded aluminium profiles to tiny clock gears.



Advantages of telecentric lenses

With standard lenses an object appears to be smaller or bigger when it is closer or further away from the lens. Unlike common optics, telecentric lenses only accept incoming ray bundles that are parallel to the optical axis; therefore the object size remains unchanged. This is essential when you must measure objects that cannot be precisely positioned (e.g. on a conveyor belt).

Moreover, telecentric lenses eliminate any perspective error and are therefore perfect when thick objects must be measured.

Telecentric lenses also outperform standard lenses when it comes to distortion: An image is distorted when straight lines in the object space appear as curved lines in the image space. Distortion is measured as a percent deviation. Opto Engineering telecentric lenses feature incredibly low distortion, typically under 0.05 % and deliver extremely accurate geometrical information.

Special features of bi-telecentric

Bi-telecentric lenses are also telecentric on the detector side. This additionally guarantees:

  • Increased Field Depth
  • Even CCD illumination
  • Constant magnification even when the CCD is not perfectly positioned

Bi-telecentric lenses are able to deliver incredibly accurate measurement on many different precision parts.

Opto Engineering bi-telecentric lenses are specifically designed for real industrial applications. The lenses have a fixed design with no adjustable focus or aperture mechanisms to withstand vibrations and ensure accurate and consistent performance.

Due to these qualities bi-telecentric lenses are the key component of any accurate measurement system based on machine vision technologies.


Models

  • Object field of view 2.4 x 1.8 mm up to 239.8 x 179.9 mm
  • Working distance 45.3 mm to 531 mm

Specifications

  • Typical Telecentricity <0.03° to <0.08°
  • Typical distortion 0.02% to 0.06% (maximum 0.10%)
  • Optical interface: C mount

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Model Camera mount (optics) Max. sensor size Manufacturer Magnification (max) Working distance (mm)
OE TC 12 016-C C-Mount 2/3" Opto Engineering 0.385 43.10
OE TC 12 024-C C-Mount 2/3" Opto Engineering 0.255 67.20
OE TC 12 036-C C-Mount 2/3" Opto Engineering 0.177 102.50
OE TC 12 048-C C-Mount 2/3" Opto Engineering 0.134 132.90
OE TC 12 056-C C-Mount 2/3" Opto Engineering 0.114 157.80
OE TC 12 064-C C-Mount 2/3" Opto Engineering 0.100 181.80
OE TC 12 080-C C-Mount 2/3" Opto Engineering 0.080 226.70
OE TC 12 096-C C-Mount 2/3" Opto Engineering 0.068 278.60
OE TC 12 120-C C-Mount 2/3" Opto Engineering 0.052
OE TC 12 144-C C-Mount 2/3" Opto Engineering 0.044 396.00
OE TC 12 192-C C-Mount 2/3" Opto Engineering 0.033 526.90
OE TC 13 016-C C-Mount 2/3" Opto Engineering 0.290 43.10
OE TC 13 024-C C-Mount 2/3" Opto Engineering 0.192 67.20
OE TC 13 036-C C-Mount 2/3" Opto Engineering 0.133 102.50
OE TC 13 048-C C-Mount 2/3" Opto Engineering 0.098 133.40
OE TC 13 064-C C-Mount 2/3" Opto Engineering 0.074 181.90
OE TC 13 080-C C-Mount 2/3" Opto Engineering 0.059 225.90
OE TC 13 096-C C-Mount 2/3" Opto Engineering 0.050 279.60
OE TC 23 004-C C-Mount 2/3" Opto Engineering 2.0 56.00
OE TC 23 007-C C-Mount 2/3" Opto Engineering 1333 60.10
OE TC 23 009-C C-Mount 2/3" Opto Engineering 1.0 62.20
OE TC 23 012-C C-Mount 2/3" Opto Engineering 0.735 53.90
OE TC 23 016-C C-Mount 2/3" Opto Engineering 0.528 43.10
OE TC 23 024-C C-Mount 2/3" Opto Engineering 0.35 67.20
OE TC 23 036-C C-Mount 2/3" Opto Engineering 0.243 102.50
OE TC 23 048-C C-Mount 2/3" Opto Engineering 0.184 132.90
OE TC 23 056-C C-Mount 2/3" Opto Engineering 0.157 157.80
OE TC 23 064-C C-Mount 2/3" Opto Engineering 0.138 181.80
OE TC 23 072-C C-Mount 2/3" Opto Engineering 0.122 226.70
OE TC 23 080-C C-Mount 2/3" Opto Engineering 0.110 226.70
OE TC 23 085-C C-Mount 2/3" Opto Engineering 0.104 279.70
OE TC 23 096-C C-Mount 2/3" Opto Engineering 0.093 278.60
OE TC 23 110-C C-Mount 2/3" Opto Engineering 0.079 334.50
OE TC 23 120-C C-Mount 2/3" Opto Engineering 0.072 334.50
OE TC 23 130-C C-Mount 2/3" Opto Engineering 0.068 396.00
OE TC 23 144-C C-Mount 2/3" Opto Engineering 0.061 396.00
OE TC 23 172-C C-Mount 2/3" Opto Engineering 0.051 526.90
OE TC 23 192-C C-Mount 2/3" Opto Engineering 0.046 526.90
OE TC 23 200-C C-Mount 2/3" Opto Engineering 0.044 492.80
OE TC 23 240-C C-Mount 2/3" Opto Engineering 0.037 492.80