Two-element optical system and camera and method of making a cam

Details Two-element optical system and camera and method of making a cam Two-element optical system and camera and method of making a cam

1994-12-30

1997-02-18

Epps, Georgia Y.

Optical: systems and elements

Lens

Including a nonspherical surface

359793, 359794, G02B 302, G02B 904, G02B 906

Patent

active

056046391

ABSTRACT:
An optical system comprising two lens elements suitable for use in photographic devices such as single-use cameras having cylindrical image planes. This optical system can operate at F-numbers lower than F/11 while maintaining an excellent performance.

REFERENCES:
patent: 79323 (1868-06-01), Dallmeyer
patent: 1776398 (1930-09-01), Shore
patent: 3006248 (1961-10-01), Linke
patent: 4932764 (1990-06-01), Simpson, Jr.
patent: 5000552 (1991-03-01), Simpson, Jr. et al.
patent: 5067803 (1991-11-01), Ohno
patent: 5475536 (1995-12-01), Kikutani

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