Collapsible viewing instrument

Details Collapsible viewing instrument Collapsible viewing instrument

1998-09-28

2000-02-22

Spyrou, Cassandra

Optical: systems and elements

Compound lens system

Telescope

359480, G02B 2300

Patent

active

060287004

ABSTRACT:
A sturdy, reusable and collapsible viewing instrument for assisting in viewing distant objects that is assembled from a blank. The blank comprises two pivoting frames in which ocular and objective lenses are affixed. Domains of the blank are foldable along pre-etched fold lines to form parallel sides of the viewing instrument. Ideally, the blank dimensions approximate those of a standard credit card so that the viewing instrument may be stored in one's wallet or purse.

REFERENCES:
patent: 4772747 (1988-09-01), Bresnahan
patent: 4964709 (1990-10-01), Hoeptner
patent: 5206757 (1993-04-01), Cheng et al.
patent: 5282086 (1994-01-01), Goldstein
patent: 5899345 (1999-05-01), Fuller et al.

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