Optical system for use with a viewfinder

Details Optical system for use with a viewfinder Optical system for use with a viewfinder

1990-07-09

1992-08-04

Sugarman, Scott J.

Optical: systems and elements

Lens

Eyepiece

354219, 359647, 359717, 359718, 359730, G02B 2500, G02B 1318, G02B 1700, G02B 1302

Patent

active

051364271

ABSTRACT:
An optical system for use in conjunction with a camera viewfinder having a penta-mirror comprises a positive first lens element and a negative second lens element satisfying predetermined conditions.

REFERENCES:
patent: 4265529 (1981-05-01), Yokota
patent: 4289392 (1981-09-01), Kobori et al.
"Injection Molding of Plastic Optics", Ulrich Greis, Gunther Kirchof, Proceedings, vol. 381, Apr. 1983.

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