Method and apparatus for setting focus in an imaging device

Details Method and apparatus for setting focus in an imaging device Method and apparatus for setting focus in an imaging device

1999-04-13

2000-09-12

Epps, Georgia

Optical: systems and elements

Lens

With support

359819, 359822, G02B 702

Patent

active

061185981

ABSTRACT:
Disclosed herein is an improved lens focusing and holding arrangement for an imaging system of the type which may include a photosensor array. The lens may be in contact with a reference surface or surfaces formed within the imaging system housing and may be translatable along the surface in directions toward and away from the photosensor array in order to adjust the focus of the imaging system. A lens retention clip may be provided to secure the lens within the imaging system housing and to cause translational movement of the lens along the imaging system reference surface. When focusing the imaging system, the lens retention clip may be in a first operating condition in which the lens retention clip applies a relatively small force tending to hold the lens in contact with the housing reference surface. After the desired focus has been set, the lens retention clip may be placed in a second operating condition in which the lens retention clip applies a relatively high force tending to hold the lens in contact with the housing reference surface, thus locking the lens in place.

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