公开(公告)号：ZA7502993B

公开(公告)日：1977-03-30

申请号：ZA7502993

申请日：1975-05-09

Applicant: LANSING RESEARCH CORP

Inventor： MCFARLANE R ,  WOLGA G

IPC: G03B7/099 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G01J3/44 ,  G02F1/11 ,  B01D

CPC classification number: G01J3/1256 ,  G01J3/26 ,  G02F1/113

公开(公告)号：IN145133B

公开(公告)日：1978-09-02

申请号：IN940CA1975

申请日：1975-05-12

Applicant: LANSING RESEARCH CORP

Inventor： WOLGA G ,  MCFARLANE R

IPC: G03B7/099 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G01J3/44 ,  G02F1/11 ,  G01J3/00 ,  H01J39/00

Abstract: A spectroscopic apparatus for the measurement of the spectral characteristics of weak light sources, for example laser Raman scattering from liquids, is formed of a tunable acousto-optical filter followed by a Fabry-Perot Etalon. Circuits are provided for tuning the two devices to the same light frequency or wavelength. The acousto-optical filter eliminates most of the light other than that of a particular wavelength while the etalon eliminates still more of the light other than that of the wavelength to which the device is tuned. The optical throughput of the two devices is so high that a very much greater proportion of the light of the particular wavelength from any source can be passed through the combination than through other devices of similar resolving power.

公开(公告)号：ZA752993B

公开(公告)日：1977-03-30

申请号：ZA752993

申请日：1975-05-09

Applicant: LANSING RESEARCH CORP

Inventor： MCFARLANE R ,  WOLGA G

IPC: G03B7/099 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G01J3/44 ,  G02F1/11 ,  B01D

Abstract: A spectroscopic apparatus for the measurement of the spectral characteristics of weak light sources, for example laser Raman scattering from liquids, is formed of a tunable acousto-optical filter followed by a Fabry-Perot Etalon. Circuits are provided for tuning the two devices to the same light frequency or wavelength. The acousto-optical filter eliminates most of the light other than that of a particular wavelength while the etalon eliminates still more of the light other than that of the wavelength to which the device is tuned. The optical throughput of the two devices is so high that a very much greater proportion of the light of the particular wavelength from any source can be passed through the combination than through other devices of similar resolving power.