Method of non-destructive lamp testing by sensing light output

Details Method of non-destructive lamp testing by sensing light output Method of non-destructive lamp testing by sensing light output

1991-02-22

1993-04-13

Strecker, Gerard R.

Electricity: measuring and testing

Electric lamp or discharge device

Electric lamp

324403, 324501, 340641, G01R 3100

Patent

active

052026361

ABSTRACT:
A system for testing electrical lamps includes a hollow cylinder. Lamps are placed in the hollow cylinder and the light emitted from the lamp is focused onto a phototransistor by a focusing lens. The output of the phototransistor is measured against the electrical voltage input into the lamp. If the output of the phototransistor lags behind the input voltage to the lamp by more than a predetermined amount, the lamp is rejected.

REFERENCES:
patent: 3399348 (1968-08-01), Praglin et al.
patent: 3626194 (1971-12-01), Kirano et al.

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