Title:
INTERFERENCE REFRACTOMETER
Document Type and Number:
Japanese Patent JPS58210548
Kind Code:
A
Abstract:
An interterence refractometer of the Jamin type includes a beam splitter (14) arranged to split light from a laser source (12) into two partial beams BM, BR one of which passes through a test cell (20) adapted to contain a fluid medium. One component (BR) of the reference partial beam passes through a phase plate which introduces a 90 degree phase shift. The partial beams are detected by photodetectors (38, 44,46) the outputs of which are coupled to counter circuits (not shown) to provide an output which is independent of changes in the mean level of the optical input signals.
Inventors:
MAIKERU JIYON DAUNZU
Application Number:
JP8651383A
Publication Date:
December 07, 1983
Filing Date:
May 17, 1983
Export Citation:
Assignee:
MAIKERU JIYON DAUNZU
International Classes:
G01N21/45; (IPC1-7): G01N21/45
Attorney, Agent or Firm:
Yoshio Kawaguchi (2 outside)
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