Binocular magnifying glasses

Details Binocular magnifying glasses Binocular magnifying glasses

1997-02-25

1999-10-12

Nguyen, Thong

Optical: systems and elements

Binocular devices

Binocular loupe type

359409, 359411, G02B 2500, G02B 2300

Patent

active

059662395

ABSTRACT:
Binocular magnifying glasses include a pair of magnifying optical systems, one system for each of the left and right eyes. Each optical system has an objective lens having a positive power and an eyepiece having a negative power arranged in that order from the object side in. The optical center of at least one eyepiece is positioned outside of a line connecting the center of rotation of the eye and the object point.

REFERENCES:
patent: 701788 (1902-06-01), Berger
patent: 1033965 (1912-07-01), Troppman
patent: 3899244 (1975-08-01), Mulder
patent: 4217025 (1980-08-01), Takenaka
patent: 4886340 (1989-12-01), Kanda
patent: 4892384 (1990-01-01), Okamoto
patent: 5074650 (1991-12-01), Yamagishi et al.

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