Light-emitting unit and superimposing device

Details Light-emitting unit and superimposing device Light-emitting unit and superimposing device

2007-05-18

2009-12-22

Perkey, W. B. (Department: 2862)

Photography

Having camera indicator

Having display in viewfinder

Reexamination Certificate

active

07636520

ABSTRACT:
A light-emitting unit for superimposement is provided. The light-emitting unit is applied to one of a pentagonal roof-mirror or a pentagonal Dach-prism of a viewfinder optical system of a camera. The unit comprises a light source, a light-emitting lens, and a second mirror. The light source emits superimposing light. The second mirror reflects light emitted from the light source and passed through the light-emitting lens toward a third reflection face of one of a pentagonal roof-mirror or a pentagonal Dach-prism. The light source, the light-emitting lens, and the second mirror are integrally assembled as a unit.

REFERENCES:
patent: 3631784 (1972-01-01), Jurenz
patent: 4053912 (1977-10-01), Okuno et al.
patent: 4062026 (1977-12-01), Fujita
patent: 4128321 (1978-12-01), Kobori et al.
patent: 5754900 (1998-05-01), Suda
patent: 6292629 (2001-09-01), Sensui
patent: 7046925 (2006-05-01), Kaneko et al.
patent: 2000089336 (2000-03-01), None
English language Abstract of JP 2000-089336.

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