Lens holder and lens-fitted photographic film unit

Details Lens holder and lens-fitted photographic film unit Lens holder and lens-fitted photographic film unit

2006-07-04

2006-07-04

Thompson, Timothy (Department: 2873)

Optical: systems and elements

Lens

With support

C359S813000, C359S819000, C359S821000

Reexamination Certificate

active

07072125

ABSTRACT:
A first lens, a first spacer ring, a second lens, a second spacer ring, and a third lens are disposed along an optical axis and from the subject side in the stated order within a holder main body. A flare stopper in the shape of a ring (a washer) is integrally formed with an inner periphery of the second spacer ring. The flare stopper is formed to protrude toward the third lens and positions a circular opening thereof close to a concave surface of the third lens, so as to cover a peripheral area of the concave surface. Accordingly, both the light toward a peripheral surface of the third lens and toward a peripheral surface of an exposure opening are blocked by the flare stopper.

REFERENCES:
patent: 6341901 (2002-01-01), Iwasa et al.
patent: 06-300950 (1994-10-01), None
patent: 2002-250956 (2002-09-01), None

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