Viewfinder optical system

Details Viewfinder optical system Viewfinder optical system

1998-07-07

2000-10-31

Sugarman, Scott J.

Optical: systems and elements

Lens

Multiple component lenses

359570, 359717, 359434, G02B 904, G02B 518

Patent

active

061411590

ABSTRACT:
A viewfinder optical system includes an objective optical system for forming an image of an object, and an eye-piece optical system for converting rays of light from the image into substantially parallel rays of light, wherein the objective optical system is provided with an optical element having a diffraction optical surface.

REFERENCES:
patent: 5044706 (1991-09-01), Chen
patent: 5268790 (1993-12-01), Chen
patent: 5493441 (1996-02-01), Chipper
patent: 5523888 (1996-06-01), Nishio
patent: 5574599 (1996-11-01), Hoshi et al.

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