Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1979-01-31
1985-08-20
Willis, Davis L.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
G01B 902
Patent
active
045360898
ABSTRACT:
Apparatus for detecting the existance of a source of coherent radiation in the presence of incoherent radiation. A beam splitter splits the radiation into two paths. Means are included in one path for transmitting the incoherent radiation and modulated coherent radiation. The other path effectively transmits only the incoherent radiation. Balancing means are used to balance out the incoherent radiation transmitting only the modulated coherent radiation which is then detected.
REFERENCES:
patent: 3824018 (1974-07-01), Crane, Jr.
Grimes Edwin T.
Koren Matthew W.
Masselle Francis L.
Murphy Thomas P.
The Perkin-Elmer Corporation
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