Binocular with shading device

Details Binocular with shading device Binocular with shading device

1991-09-05

1992-09-22

LaRoche, Eugene R.

Optical: systems and elements

Compound lens system

Telescope

359410, 359411, G02B 2318

Patent

active

051502550

ABSTRACT:
A binocular including two collapsible telescopes mounted to a hat for pivotal movement between a downward extended viewing position and an upward retracted storage position.

REFERENCES:
patent: 478350 (1892-07-01), Nicholson
patent: 2848924 (1958-08-01), Potez
patent: 4202601 (1980-05-01), Burbo et al.
patent: 4449787 (1984-05-01), Burbo et al.
patent: 4971429 (1990-11-01), Ishido et al.

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