Optical beam-switching chopper

Details Optical beam-switching chopper Optical beam-switching chopper

G - Physics

02

B

73/55, 88/94

G02B 17/00 (2006.01) G01J 3/08 (2006.01)

Patent

CA 1095300

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.

306048

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