Viewfinder optical system

Details Viewfinder optical system Viewfinder optical system

2005-03-15

2005-03-15

Nguyen, Thong Q (Department: 2872)

Optical: systems and elements

Compound lens system

Telescope

C359S362000, C359S831000

Reexamination Certificate

active

06867916

ABSTRACT:
A compact magnification-varying viewfinder optical system includes an objective lens unit for forming a primary image, the objective lens unit having at least one curved reflection surface arranged to reflect a light flux and a lens surface, and an eyepiece lens unit for observing the primary image, wherein an optical power is imparted to the curved reflection surface.

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