Title:
OPTICAL INFORMATION PROCESSOR
Document Type and Number:
Japanese Patent JPH05210141
Kind Code:
A
Abstract:
PURPOSE:To miniaturize an optical information processor by shortening the focal distance of a Fourier-transform lens by the use of a reducing optical system. CONSTITUTION:This processor is provided with a 1st lens 6 where a 1st spatial optical modulation element 4 for displaying an inputted image is put on its front side focal plane, a 2nd lens 11 where a 2nd spatial optical modulation element 9 is put on its front side focal plane, a 3rd lens 12 where the 2nd lens 11 is put on its front side focal plane, a multiplexer for projected light from the 1st lens 6 and the 3rd lens 12, a 4th lens 14 where the confocal point of the 1st lens 6 and the 3rd lens 12 is put on its front side focal plane, and a photodetector 15 which is put on the rear side focal plane of the 4th lens 14.
Inventors:
NISHII KANJI
ITO MASAYA
FUKUI KOJI
ITO MASAYA
FUKUI KOJI
Application Number:
JP1461392A
Publication Date:
August 20, 1993
Filing Date:
January 30, 1992
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G01N27/447; G02F1/13; G02F3/00; G02B27/46; G06E3/00; G06V10/88; (IPC1-7): G02B27/46; G02F1/13; G02F3/00
Attorney, Agent or Firm:
Akira Kobiji (2 outside)