Method and apparatus for aligning a zoom lens with an image sens

Details Method and apparatus for aligning a zoom lens with an image sens Method and apparatus for aligning a zoom lens with an image sens

1989-01-03

1990-01-16

Evans, F. L.

Optics: measuring and testing

Lens or reflective image former testing

Optical center, cylinder axis, or prism measuring or...

G01B 900

Patent

active

048939277

ABSTRACT:
A zoom lens is driven by an oscillating drive in continuous motion between different states of magnification to cause an image on a video screen to expand and collapse about the point on the optical axis of the lens. The expanding and collapsing image is viewed on the video screen and the location of the optical axis of the lens assembly is determined by identifying the point on the screen that does not move. The lens assembly is then adjusted so that the stationary point coincides with a reticle at the optical center of the image sensor.

REFERENCES:
patent: 3407018 (1968-10-01), Miller
patent: 3428915 (1969-02-01), Leone et al.
patent: 4110046 (1978-08-01), Baker et al.

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