JPS5689714A - Light information processing method and its device - Google Patents

Light information processing method and its device

Info

Publication number
JPS5689714A
JPS5689714A JP16696679A JP16696679A JPS5689714A JP S5689714 A JPS5689714 A JP S5689714A JP 16696679 A JP16696679 A JP 16696679A JP 16696679 A JP16696679 A JP 16696679A JP S5689714 A JPS5689714 A JP S5689714A
Authority
JP
Japan
Prior art keywords
layer
valve
pattern
fourier conversion
space filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16696679A
Other languages
Japanese (ja)
Inventor
Takashi Wada
Shunsuke Mukasa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP16696679A priority Critical patent/JPS5689714A/en
Publication of JPS5689714A publication Critical patent/JPS5689714A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Character Discrimination (AREA)

Abstract

PURPOSE: To obtain a space filter in real time with a simple constitution, by writing the Fourier conversion spectrum image due to a specific coherent light to the light write liquid crystal valve freely to form the space filter.
CONSTITUTION: The Fourier conversion image of pattern 17 is written to photoconductive layer 202 of liquid crystal valve 20 by light source 15 for the coherent light sensitive to layer 202 according to the material and so on the layer 202, collimator 16, input pattern 17, Fourier conversion lens 18, dichroic mirror 19, and so on to form a space filter due to valve 20 in real time with the simple constitution. Consequently, it is detected whether the Fourier conversion image pattern corresponding to the pattern 13 and so on due to the coherent light flux which is not sensitive to layer 202 coincides with the conversion image formed on valve 20 or not. Thus, the detection processing for correctness of various light information patterns is performed rapidly.
COPYRIGHT: (C)1981,JPO&Japio
JP16696679A 1979-12-24 1979-12-24 Light information processing method and its device Pending JPS5689714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16696679A JPS5689714A (en) 1979-12-24 1979-12-24 Light information processing method and its device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16696679A JPS5689714A (en) 1979-12-24 1979-12-24 Light information processing method and its device

Publications (1)

Publication Number Publication Date
JPS5689714A true JPS5689714A (en) 1981-07-21

Family

ID=15840912

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16696679A Pending JPS5689714A (en) 1979-12-24 1979-12-24 Light information processing method and its device

Country Status (1)

Country Link
JP (1) JPS5689714A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61502286A (en) * 1984-05-08 1986-10-09 マンチエスタ−・ア−ルアンドデイ−・パ−トナ−シツプ LCD projector and method for projecting images
JPS6378283A (en) * 1986-09-22 1988-04-08 Photo Composing Mach Mfg Co Ltd Method and apparatus for pattern recognition
JPS63298893A (en) * 1987-05-29 1988-12-06 Nippon Telegr & Teleph Corp <Ntt> Associative memory device
JPH02132412A (en) * 1988-11-14 1990-05-21 Matsushita Electric Ind Co Ltd Optical image processing device
JPH02198414A (en) * 1989-01-27 1990-08-06 Matsushita Electric Ind Co Ltd Optical information processor
JPH02222921A (en) * 1989-02-23 1990-09-05 Tokyo Electron Ltd Optical filter device
JPH05101025A (en) * 1991-10-03 1993-04-23 Hamamatsu Photonics Kk Neural network device and its execution method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61502286A (en) * 1984-05-08 1986-10-09 マンチエスタ−・ア−ルアンドデイ−・パ−トナ−シツプ LCD projector and method for projecting images
JPS6378283A (en) * 1986-09-22 1988-04-08 Photo Composing Mach Mfg Co Ltd Method and apparatus for pattern recognition
JPS63298893A (en) * 1987-05-29 1988-12-06 Nippon Telegr & Teleph Corp <Ntt> Associative memory device
JPH02132412A (en) * 1988-11-14 1990-05-21 Matsushita Electric Ind Co Ltd Optical image processing device
JPH02198414A (en) * 1989-01-27 1990-08-06 Matsushita Electric Ind Co Ltd Optical information processor
JPH02222921A (en) * 1989-02-23 1990-09-05 Tokyo Electron Ltd Optical filter device
JPH05101025A (en) * 1991-10-03 1993-04-23 Hamamatsu Photonics Kk Neural network device and its execution method

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