Patent · US Expired

Wide angle view optical system

US4170400A · kind A · utility

28Cited by

5References

17Claims

0Family size

Inventors

Bert Bach · New York, US
Eliot Gerber · Moraga, US

Key dates

Filing date	Jul 5, 1977
Grant date	Oct 9, 1979
Priority date	—
Expiry date	Jul 5, 1997

Classification

Technology area (CPC G)Physics
CPC primaryG03B37/00
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical system for cameras and projectors includes a reflective convex mirror for a wide-angle view, for example, a sector of one fourth of a sphere to obtain a view of 180.degree.. The optical system further includes a front face reflecting mirror to change the optical path 90.degree., a first focusing lens, a fiber optic bundle and a second focusing lens. The fiber optic bundle has one face in the form of an annulus or sector of an annulus and the opposite face of rectangular shape so that an annular shaped image may be converted into a non-distorted image of rectangular form.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.