Optical display having dished cover plate

Details Optical display having dished cover plate Optical display having dished cover plate

1976-04-20

1977-08-02

Miller, Jr., Stanley D.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356246, G02F 136

Patent

active

040392538

ABSTRACT:
Optical devices and especially electrochromic devices comprising a sealed cell containing an aqueous medium and having a pair of opposed walls, at least one of which is transparent. Breakage due to freezing is minimized by providing a cell in which one of the walls is dished, having a main portion which is parallel to the other wall and a sloping peripheral portion surrounding the main portion and intersecting the other wall at an angle not greater than 30.degree..

REFERENCES:
patent: 3846015 (1974-11-01), Moi
patent: 3886014 (1975-05-01), Bayer
patent: 3973388 (1976-08-01), Yoshida et al.

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