Lens holding device capable of adjusting lens position

Details Lens holding device capable of adjusting lens position Lens holding device capable of adjusting lens position

1992-07-28

1994-10-18

Hayes, Monroe H.

Optical: systems and elements

Prism

With reflecting surface

354286, 354288, 359822, G03B 118

Patent

active

053573005

ABSTRACT:
In a lens holding device, a plurality of protrusions of equal height are provided oppositely at the front and rear of the periphery of a plastic photographic lens. The plurality of protrusions are substantially equidistant. Three sets of stairs, each having a plurality of steps with a predetermined difference in height between adjacent steps, are provided at positions corresponding to the protrusions in a lens receiving member and a lens pressing member, between which the lens is sandwiched. The position of the lens can be adjusted from a most advanced position to a most retreated position along the optical axis by selecting a preferred step of each of the stairs.

REFERENCES:
patent: 3220308 (1965-11-01), Lareau
patent: 4690505 (1987-09-01), Iizuka et al.
patent: 4733945 (1988-03-01), Bacich

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