Zoom lens for a variable depth range camera

Details Zoom lens for a variable depth range camera Zoom lens for a variable depth range camera

1990-07-02

1992-01-21

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354403, 359433, 359694, G01C 300, G01C 500, G02B 1500, G02B 2700

Patent

active

050823620

ABSTRACT:
An apparatus for a variable depth triangulation ranging system, the ranging system including means for emitting a light beam, means for focusing an emitted light beam on an object, and light sensitive means. The present apparatus includes motorized zoom/focus lens means for imaging reflected light onto said light sensitive means, a distance between the zoom lens means and the light sensitive means being substantially fixed when in an operative condition, the light sensitive means being rotatable relative to said zoom lens means, and means for adjustably positioning the light sensitive means and the zoom lens means such that an emitted light beam, a plane axis through the zoom lens means, and an image line through the light sensitive means all intersect at approximately a common point and satisfy the Scheimpflug condition.

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SPSE Handbook of Photographic Science and Engineering, ed. W. Thomas, Jr., 1973, John Wiley & Sons, pp. 181-185.
Bocchi et al., Sensor Performance in Long Range 3D Triangulation Systems (authors identified as being at CyberOptics Corporation, Minneapolis, Minn.).

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