Binocular with objective lens-barrels rotatable about the optica

Details Binocular with objective lens-barrels rotatable about the optica Binocular with objective lens-barrels rotatable about the optica

1991-01-30

1993-03-23

Henry, Jon W.

Optical: systems and elements

Compound lens system

Telescope

359416, G02B 712, G02B 706, G02B 2318, G02B 2300

Patent

active

051969599

ABSTRACT:
A binocular comprising a binocular body, one or a pair of objective lens-barrel unit or units, a pair of eyepiece lens-barrels and a pair of image-erecting chambers. A pair of parallel optical axes pass through the objective lens-barrel unit or units. The image-erecting chambers are arranged between the objective lens-barrel unit or units and the eyepiece lens-barrels. The image-erecting chambers have incorporated therein their respective prism units for optically connecting the optical axes of the objective lens-barrel unit or units to respective optical axes of the eyepiece lens-barrel units. Each of the image-erecting chambers is associated with the binocular body for angular movement relative thereto about a corresponding one of the optical axes of the objective lens-barrel unit or units in such a manner that the optical axes of the respective eyepiece lens-barrel units are movable angularly toward and away from each other respectively about the optical axes of the objective lens-barrel unit or units.

REFERENCES:
patent: 1016315 (1912-02-01), Barton
patent: 1338241 (1920-04-01), Meling
patent: 3049972 (1962-08-01), Malinkowski
patent: 3454773 (1969-07-01), Bulthuis et al.
patent: 4087153 (1978-05-01), Hengst
patent: 4630901 (1986-12-01), Altenheiner et al.
Fujinon Binoculars Advertising Brochure; 15 pages; 1987 Fujinon Inc.
Tamron Binoculars Advertising Brochure; 2 pages; Tamron Co., Ltd.
Tasco Binoculars Advertising Brochure; 7 pages; 1987 Tasco Sales, Inc.

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