Optical: systems and elements – Optical aperture or tube – or transparent closure
Patent
1990-11-13
1992-02-11
Ben, Loha
Optical: systems and elements
Optical aperture or tube, or transparent closure
359819, 359831, G02B 700
Patent
active
050879910
ABSTRACT:
An apparatus for multi-image viewing includes a first hollow eye piece housing having a first eye aperture and a concentric second equator aperture; and a second hollow lens housing having a third equator aperture and a concentric fourth lens mount aperture. A multifaceted disc-like, prismatic lens is seated within the lens mount housing in fixed relation to the lens mount aperture. The diameter of the outer periphery of the lens exceeds that of inner periphery of the lens mount aperture. The first hollow housing is permanently bonded to the second hollow housing at their equator apertures.
REFERENCES:
patent: 4097818 (1978-06-01), Manonkian et al.
patent: 4818067 (1989-04-01), Maisenbacher et al.
patent: 4892399 (1990-01-01), Ahn
Ben Loha
InterNatural Designs, Inc.
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