Foldable binoculars

Details Foldable binoculars Foldable binoculars

1979-08-27

1981-05-19

Henry, Jon W.

350145, G02B 2318

Patent

active

042681111

ABSTRACT:
A low-cost folding binocular which may be collapsed to a relatively thin package. The foldable binocular includes a laminated synthetic plastic, pressed paper or cardboard case provided with synthetic plastic objective and eyepiece lenses. The focus adjustment is effected by longitudinal folding of the case along the same fold lines which permit the case to be collapsed. No gluing is necessary.

REFERENCES:
patent: 2715853 (1955-08-01), Austin
patent: 2768554 (1956-10-01), Leslie
patent: 2789460 (1957-04-01), Kaufman
patent: 2986830 (1961-06-01), Underberg et al.
patent: 3553866 (1971-01-01), Redford et al.
patent: 3562939 (1971-02-01), Jacobs et al.
patent: 4013341 (1977-03-01), Riley
patent: 4175828 (1979-11-01), Carver

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