1985-05-02
1986-10-21
Corbin, John K.
G02B 700
Patent
active
046182152
ABSTRACT:
A viewing chamber which permits observation of a sample retained therein includes a pair of double window assemblies mounted in opposed openings in the walls thereof so that a light beam can directly enter and exit from the chamber. A flexible mounting arrangement for the outer windows of the window assemblies enables the windows to be brought into proper alignment. An electrical heating arrangement prevents fogging of the outer windows whereas desiccated air in the volume between the outer and inner windows prevents fogging of the latter.
REFERENCES:
patent: 3438700 (1969-04-01), Gillard
patent: 3782809 (1974-01-01), Shropshire
patent: 3894795 (1975-07-01), Laurens
patent: 4255020 (1981-03-01), Yukio
patent: 4436375 (1984-03-01), Meginnis
Elkins Bobby R.
Keller Vernon W.
Owen Robert B.
White William T.
Ben Loha
Beumer Joseph H.
Corbin John K.
Manning John R.
The United States of America as represented by the Administrator
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