Viewfinder optical system

Details Viewfinder optical system Viewfinder optical system

1997-04-16

2000-04-18

Sugarman, Scott J.

Optical: systems and elements

Lens

Eyepiece

359656, 359646, 359660, 359795, 359558, 396373, G02B 2500, G02B 518, G02B 1302

Patent

active

060522348

ABSTRACT:
A viewfinder optical system has a relay lens system. The relay lens system focuses a primary image to form a secondary image. The relay lens is provided at an optical conjugate point with respect to a pupil. A surface of the relay lens system has an optical power of diffraction. The surface is positioned between the primary image and the optical conjugate point. The surface also has optical power of refraction.

REFERENCES:
patent: 5013133 (1991-05-01), Buralli et al.
patent: 5044706 (1991-09-01), Chen
patent: 5148314 (1992-09-01), Chen
patent: 5225927 (1993-07-01), Nozaki et al.
patent: 5257133 (1993-10-01), Chen
patent: 5446588 (1995-08-01), Missig et al.
patent: 5710667 (1998-01-01), Goto
patent: 5715090 (1998-02-01), Meyers
G.J. Swanson and W.B. Veldkamp, "Infrared Applications of Diffractive Optical Elements", SPIE Proceedings, vol. 885, paper 22 (1988).

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