Movable instrument with light emitting position indicator

Details Movable instrument with light emitting position indicator Movable instrument with light emitting position indicator

1976-07-30

1978-03-07

Borchelt, Archie R.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250340, 250342, G01J 500

Patent

active

040781798

ABSTRACT:
A movable instrument intended for utilization in detecting a difference which is capable of being optically detected between adjacent locations can be constructed so as to include an optical sensor for producing an output which is proportional to the difference between various locations and an illumination source operatively connected to the optical sensor for providing a level of brightness which is proportional to the output of the optical sensor. Such an instrument is preferably a device which is used in determining the temperature of a surface. When the invention is utilized in conjunction with such an instrument the apparent intensity of the light emitted from the illumination source provides a convenient analog indicator facilitating the instrument being pointed at either the hottest or coldest portion of the surface.

REFERENCES:
patent: 3283148 (1966-11-01), Schwarz et al.
patent: 3502874 (1970-03-01), Astheimer
patent: 3585394 (1971-06-01), Higby et al.
patent: 3761713 (1973-09-01), Merrill

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