Compact real image finder

Details Compact real image finder Compact real image finder

1994-06-22

1996-10-08

Nguyen, Thong

Optical: systems and elements

Compound lens system

Variable magnification

359362, 359421, 359422, G02B 2300

Patent

active

055637361

ABSTRACT:
A compact, simple real image finder includes an objective, a field lens, erecting optics and an eyepiece. The field lens is separated from an internal image sufficiently that it contributes substantially to the magnification of the finder.

REFERENCES:
patent: 4779969 (1988-10-01), Sato et al.
patent: 4867549 (1989-09-01), Sekine
patent: 5130845 (1992-07-01), Ruben
patent: 5132838 (1992-07-01), Ohshita
patent: 5245375 (1993-09-01), Ohshita
patent: 5247324 (1993-09-01), Estelle

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