Patent ID: 7636520
Filing Date: 2009-12-22
Classification: G03B

Abstract:
1. A light-emitting unit for superimposement applied to one of a pentagonal roof-mirror and a pentagonal Dach-prism of a viewfinder optical system of a camera, comprising: a light source that emits superimposing light; a light-emitting lens; and a mirror that reflects light emitted from said light source and passed through said light-emitting lens toward a third reflection face of one of said pentagonal roof-mirror and said pentagonal Dach-prism; wherein said light source, said light-emitting lens, and said mirror are integrally assembled as a light-emitting unit, and said light-emitting unit attaches to a distinct support member on which said pentagonal roof-mirror or pentagonal Dach-prism is mounted, such that said mirror is disposed adjacent to and spaced from a backside of said third reflection face.