Illumination system for portable color imager borescope

Details Illumination system for portable color imager borescope Illumination system for portable color imager borescope

1989-10-06

1990-09-18

Sikes, William L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 98, 358100, G02B 2326

Patent

active

049573462

ABSTRACT:
This invention involves a lighting system for a portable borescope in which the light is turned on and off at video frequencies and the duration of actuation is controlled in relation to the illumination picked up by the video imager in the distal end of the borescope insertion tube. By turning off the lamp for a significant portion of the duty cycle, a significant amount of power is saved, allowing use of the system in a battery operated borescope.

REFERENCES:
patent: 4562831 (1986-01-01), Murakoshi et al.
patent: 4769693 (1988-09-01), Kato

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