Optical instrument, in particular binoculars

Details Optical instrument, in particular binoculars Optical instrument, in particular binoculars

1983-02-17

1986-12-02

Punter, William H.

350287, 350589, G02B 2302, G02B 718, G02B 2318

Patent

active

046260803

ABSTRACT:
The optical instrument, in particular binoculars, is characterized by exhibiting an integral stable inner housing including the eyepiece tube, the objective tube, the prism seat and possibly the hinge mechanism. The inner housing is encased in plastic foam which determines the outer contour of the instrument.

REFERENCES:
patent: 869769 (1907-10-01), Bell
patent: 1533248 (1925-04-01), Harwix
patent: 2372479 (1945-03-01), French
patent: 2423491 (1947-07-01), Fairbank
patent: 2463959 (1949-03-01), Flint
patent: 2596665 (1952-05-01), Eagle
patent: 2955560 (1960-10-01), Muller
patent: 3531177 (1970-09-01), Akin, Jr.
patent: 3749479 (1973-07-01), Kempf
patent: 3860329 (1975-01-01), Baker et al.
patent: 4056303 (1977-11-01), Swarovski et al.
patent: 4460424 (1984-07-01), Buser et al.
Harrison, R., "Mounting for Corner Cube Prisms", IBM Tech. Disc. Bull., 12-1973, p. 2730.

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