Glasses-on binoculars with an eyeglass guard including a general

Details Glasses-on binoculars with an eyeglass guard including a general Glasses-on binoculars with an eyeglass guard including a general

1991-04-05

1991-12-24

Henry, Jon W.

Optical: systems and elements

Barrel end eye guard

359414, 359418, 359513, G02B 2318, G02B 704

Patent

active

050746529

ABSTRACT:
A binocular or other optical viewing instrument dedicated for eyeglass-wearing users. An extended optical eye relief, as compared to binoculars for those without glasses, provides an eyeglass-wearing user with an optimal wide field of view. A pair of soft rubber eyeglass guards cushion the binocular against the user's eyeglasses, both protecting the eyeglass lenses and blocking a substantial portion of the ambient light from striking the eyeglass lenses.

REFERENCES:
patent: 1668975 (1928-05-01), Paulus et al.
patent: 2271380 (1942-01-01), Strang et al.
patent: 2378508 (1945-06-01), Smyth
patent: 2381101 (1945-08-01), Bausch
patent: 3033079 (1962-05-01), Haupt et al.
patent: 3842431 (1974-10-01), Sakuma
patent: 4523818 (1985-06-01), Lang
patent: 4576459 (1986-03-01), Miura et al.

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