Compact view scope

Details Compact view scope Compact view scope

1999-02-03

1999-11-23

Nguyen, Thong

Optical: systems and elements

Lens

With lens casing

359367, 359819, 40363, G02B 702, G02B 2300

Patent

active

059911000

ABSTRACT:
The compact view scope enables an observer to view miniaturized textual and pictorial images mounted in the scope. The compact view scope includes axially co-extensive outer and inner cylindrical bodies. The interior of the inner cylindrical body is hollow and is light transmissive. A first seal is established between the inner and outer cylindrical bodies by complementary thread members. The first axial end of the inner body defines an integral light filter end cap having at least one surface channel thereon. In a preferred embodiment, the surface channel has a U-shaped cross-section and provides a thinned end piece region which filters light therethrough. A film carrying miniaturized textual and pictorial images is disposed at the first axial end in the hollow, light transmissive interior of the inner cylindrical body adjacent the axially inboard side of the light filtering end cap. At the other, second axial end of the inner cylindrical body, a first lens chamfer is formed. The outer cylindrical body defines a lens shoulder and a second lens chamfer near the second axial end of the outer cylindrical body. A lens is mounted on the lens shoulder in the outer cylindrical body and is retained thereat by the first lens chamfer on the inner cylindrical body and the second lens chamfer formed on the inside surface of the outer cylindrical body. The lens, lens chamfers, and, in a preferred embodiment, the lens shoulder, form a second seal for the light transmissive, interior of the hollow inner cylindrical body.

REFERENCES:
patent: 271838 (1883-02-01), Gould
patent: 2550799 (1951-05-01), Fuller
patent: 3499698 (1970-03-01), Malys
patent: 3707052 (1972-12-01), Clark
patent: 4249330 (1981-02-01), Chioffe
patent: 4920672 (1990-05-01), Scott, Jr. et al.
patent: 5491589 (1996-02-01), Haymond

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