Precision lenses

  • 11-Nov-2011 02:02 EST

Telecentric lenses from Lensation, designed for 2/3-in charge-coupled-device sensors with a 5-megapixel resolution, enable users to significantly improve measuring accuracy. The lenses are used for inspection and measuring tasks at working distances of 110, 130, and 150 mm. On the object and/or image side, the lenses create an optical path parallel to the optical axis. Object-space telecentric lenses are used to detect objects without perspective distortion. This requires a front lens that is at least as big as the object to be measured. The magnification does not change when the object is moved on the optical axis. Therefore, the resulting image will always be the same size regardless of the distance to the object.

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