OPTICAL BEAM-SWITCHING CHOPPER

ABSTRACT OF THE DISCLOSURE An improved optical chopper, developed particularly for use in a double beam atomic absorption spectrophotometer, receives light beams from two separate sources and sequentially switches them into two separate paths and instantly thereafter the second light beam enters the...

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Bibliographic Details
Main Author BARNARD, THOMAS W
Format Patent
LanguageEnglish
French
Published 10.02.1981
Subjects
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:ABSTRACT OF THE DISCLOSURE An improved optical chopper, developed particularly for use in a double beam atomic absorption spectrophotometer, receives light beams from two separate sources and sequentially switches them into two separate paths and instantly thereafter the second light beam enters the first path, followed immediately by the first beam entering the second output path and then the second beam entering the second path; alternatively, the chopper is ar-ranged so that the first light beam enters the first output path followed by the first light beam entering the second output path, and then the second light beam enters the first path and the sec-ond light enters the second path; also, during one segment of the choppers cycle, both beams are blocked from both output paths.
Bibliography:Application Number: CA19780306048