Lamp analyzer

Details Lamp analyzer Lamp analyzer

1985-12-05

1988-01-19

Rosenberger, R. A.

Optics: measuring and testing

Optical pyrometers

Plural color responsive

356236, 374127, G01J 530, G01J 560

Patent

active

047201908

ABSTRACT:
A method and apparatus for calculating the equivalent blackbody color temperature of incandescent lamps. A lamp analyzer having photosensors which detect the red and blue components of lamp radiation and convert the components to analog currents. The currents pass through a multiplex system and are converted into a signal with voltages proportional to the photosensor currents. A signal conditioner circuit removes switching transients, damped oscillations and cell noise from the circuit, and an automatic gain controller system insures linearity in the signal. The ratio of the blue component of the signal to the red component is then determined by a ratio computer, producing an output which is linearized and scaled by a translator to display the corresponding color temperature of the lamp in Kelvins.

REFERENCES:
patent: 3672217 (1972-06-01), Naya et al.
patent: 3759102 (1973-09-01), Murray
patent: 3795918 (1974-03-01), Sunderland
patent: 3944819 (1976-03-01), Sherwood
patent: 4158505 (1979-06-01), Mathisen et al.
patent: 4410266 (1983-10-01), Seider
patent: 4470710 (1984-09-01), Crane et al.
patent: 4561786 (1985-12-01), Anderson

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