Aircraft instrument lighting fixture

Details Aircraft instrument lighting fixture Aircraft instrument lighting fixture

1980-12-29

1982-05-04

Lechert, Jr., Stephen J.

Illumination

With polarizer

362 29, 362 30, 362 62, 362216, 362290, F21V 914

Patent

active

043285325

ABSTRACT:
An aircraft instrument lighting fixture is described as having a bezel top or covering for the instrument. The bezel top has a cylindrical opening through which the face or dial of the instrument can be viewed, and an inner cylindrical wall which is adjacent the opening and around which is located an electroluminescent lamp which, in turn, is covered by a micro-louver type material that is designed to prevent an observer of the instrument from seeing the light ring created by the electroluminescent lamp. A film of light polarizing material is placed between the electroluminescent lamp and the louver material to eliminate any objectionable reflection and glare normally created when unpolarized light strikes the instrument.

REFERENCES:
patent: 3320412 (1967-05-01), Howland

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