Reflecting type optical system

Details Reflecting type optical system Reflecting type optical system

1996-02-26

2000-12-26

Sugarman, Scott J.

Optical: systems and elements

Lens

With reflecting element

359726, 359720, G02B 1700

Patent

active

061668664

ABSTRACT:
A reflecting-type optical system according to the invention includes an optical element composed of a transparent body having an entrance surface, an exit surface and at least three curved reflecting surfaces of internal reflection. A light beam coming from an object and entering at the entrance surface is reflected from at least one of the reflecting surfaces to form a primary image within the optical element and is, then, made to exit from the exit surface through the remaining reflecting surfaces to form an object image on a predetermined plane, In the optical system, 70% or more of the length of a reference axis in the optical element lies in one plane.

REFERENCES:
patent: 3674334 (1972-07-01), Offner
patent: 3810221 (1974-05-01), Plummer
patent: 4249793 (1981-02-01), Uehara
patent: 4265510 (1981-05-01), Cook
patent: 4737201 (1988-04-01), Korsch
patent: 4775217 (1988-10-01), Ellis
patent: 5063586 (1991-11-01), Jewell et al.
patent: 5134526 (1992-07-01), Inabata
patent: 5452126 (1995-09-01), Johnson
patent: 5453877 (1995-09-01), Gerbe et al.

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