Optical viewfinder

Details Optical viewfinder Optical viewfinder

2005-02-15

2005-02-15

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

C396S382000

Reexamination Certificate

active

06856465

ABSTRACT:
A optical viewfinder has a single viewfinder element formed from a homogenous material such as glass or plastic. The viewfinder element has an object surface and an image surface. The object and image surfaces are centered on a common optical axis. The object surface has a periphery extending to a first clear aperture, CA1. The image surface has a periphery extending to a second clear aperture, CA2. A reticle is formed on the object surface. The reticle is centered on the optical axis. A micro-lens is formed on the image surface and is centered on the optical axis. The micro-lens has a periphery extending to a third clear aperture, CA3inside of the diameter of the second clear aperture.

REFERENCES:
patent: 5561538 (1996-10-01), Kato et al.
patent: 5625372 (1997-04-01), Hildebrand et al.
patent: 5664244 (1997-09-01), Yamamura et al.
patent: 6473238 (2002-10-01), Daniell

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