Electric lamp and discharge devices: systems – With radiant energy sensitive control means
Patent
1990-07-02
1995-10-24
Pascal, Robert J.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
315151, 315158, H05B 3702
Patent
active
054612853
ABSTRACT:
The invention relates to a switching arrangement for operation of a high-pressure sodium discharge lamp by means of an adjustable power. Control of the adjustable power takes place by means of a control signal generated by optical sensing means for registering the spectral power of light emitted by the lamp. Registration of spectral power takes place in a first wavelength range between 350 nm and 800 nm.
REFERENCES:
patent: 4467246 (1984-08-01), Tanaka
patent: 4682084 (1987-07-01), Kuhnel
patent: 4922089 (1990-05-01), McGuire et al.
patent: 4922154 (1990-05-01), Cacoub
Hendrix Machiel A. M.
Keijser Robertus A. J.
Schleijpen Franciscus A. M.
Pascal Robert J.
Ratliff Reginald A.
U.S. Philips Corporation
Wieghaus Brian J.
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