Color sensor illumination source employing a lightpipe and multiple LEDs

A light transmitting source for a color sensor utilizes a plurality of light emitting diodes emitting light in a predetermined narrow range of wavelength whose emitted light strikes a surface of a lightpipe whereupon the light is reflected and refracted and directed to a common reflection point and...

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Bibliographic Details
Main Author TARANOWSKI; MICHAEL G
Format Patent
LanguageEnglish
Published 12.04.1994
Edition5
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:A light transmitting source for a color sensor utilizes a plurality of light emitting diodes emitting light in a predetermined narrow range of wavelength whose emitted light strikes a surface of a lightpipe whereupon the light is reflected and refracted and directed to a common reflection point and where each emitted light is attenuated by the reflection and refraction a desired amount and directed to illuminate an object whose color is to be measured.
Bibliography:Application Number: US19920840477