Instrument illuminating arrangement

Details Instrument illuminating arrangement Instrument illuminating arrangement

1984-04-13

1985-12-24

Argenbright, Tony M.

Illumination

Illuminated scale or dial

Internal light source

116286, 362 29, G01D 1128

Patent

active

045610428

ABSTRACT:
An instrument illuminating arrangement for the glare-free illumination of indicators such as characters of the instrument display area or, especially of movable hands or movable displays or electronically variable characters, has an excitation source which is so arranged as to irradiate the surfaces of the indicators and cause them to emit visible light. Preferably the excitation source generates light energy at least to some extent in the invisible range and the indicators' surfaces are provided with luminophors which convert the invisible light into visible light so that the light energy supplied to the indicators will not disturb the operator of, for example, a vehicle equipped with such instruments.

REFERENCES:
patent: 1994950 (1935-03-01), Hoffritz
patent: 2455951 (1948-12-01), Roper et al.
patent: 4297681 (1981-10-01), Dircksen
patent: 4328532 (1982-05-01), Smith

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