Functional shield for a telescope

Details Functional shield for a telescope Functional shield for a telescope

1986-12-09

1988-03-08

Corbin, John K.

350580, 350587, 350449, G02B 2316, G03B 1104

Patent

active

047296496

ABSTRACT:
A unitary, combined-purpose, functional shield--in the shape of a hollow, generally conically shaped apertured cap for a telescope lens is used with a telescope in a straight or inverted fashion to achieve protection from dew for a telescope in general and a lens thereof in particular, while at the same time assisting in the focusing of light.

REFERENCES:
patent: 1368608 (1921-02-01), Curran
patent: 1848879 (1932-03-01), Halbasch
patent: 1971066 (1934-08-01), Eppenstein
patent: 1981492 (1934-11-01), Assmus
patent: 2374991 (1945-05-01), Gordon
patent: 2875346 (1959-02-01), Monk
patent: 2995997 (1961-08-01), Nieuwenhoven
patent: 3049054 (1962-08-01), Waland
patent: 3244896 (1966-04-01), Walker
patent: 3502387 (1970-03-01), Hadley
patent: 4395775 (1983-07-01), Roberts et al.
patent: 4610517 (1986-09-01), Fukino et al.

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