Title:
SPECTROSCOPE WITH STRAY LIGHT REMOVING FUNCTION
Document Type and Number:
Japanese Patent JPH0755562
Kind Code:
A
Abstract:
PURPOSE: To remove stray light by reflecting a light emitted from a slit of a spectroscope by reflecting means and again introducing it from the same slit.
CONSTITUTION: A motor 9b rotates an optical chopper 9A. An optical modulator 9 turns ON and OFF a first-stage output light to be emitted from a slit 6 at a predetermined period thereby to modulate it. A detector 10 removes only a frequency component equal to a modulating frequency of the modulator 9 from an electric output of a photodetector 8.
Inventors:
IWASAKI TAKASHI
Application Number:
JP22829793A
Publication Date:
March 03, 1995
Filing Date:
August 20, 1993
Export Citation:
Assignee:
ANDO ELECTRIC
International Classes:
G01J3/02; (IPC1-7): G01J3/02
Next Patent: SPECTRAL FIBERSCOPE