Lens barrel having circuit board with polygonal aperture

Details Lens barrel having circuit board with polygonal aperture Lens barrel having circuit board with polygonal aperture

1988-11-22

1990-10-23

Arnold, Bruce Y.

350429, 354485, G02B 500, G02B 2700

Patent

active

049646974

ABSTRACT:
A lens barrel for use in an optical instrument such as a camera or other imaging device has a circuit board having an aperture which allows a light beam from a photographed object to pass therethrough. The aperture has a substantially polygonal shape which substantially coincides with an area of the light beam effective in forming an image on a recording portion including a film plane or an image sensing plane. The peripheral portion of the circuit board around the aperture provides a mounting area which is large enough to mount a large-sized IC chip which may include a zooming data processing circuit and other control circuits.

REFERENCES:
patent: 4134654 (1979-01-01), Murakami et al.
patent: 4167332 (1979-09-01), Sakurada et al.
patent: 4576446 (1986-03-01), Kamata
patent: 4804331 (1989-02-01), Eguchi et al.

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