JPS545751A - Information reader - Google Patents

Information reader

Info

Publication number
JPS545751A
JPS545751A JP7085977A JP7085977A JPS545751A JP S545751 A JPS545751 A JP S545751A JP 7085977 A JP7085977 A JP 7085977A JP 7085977 A JP7085977 A JP 7085977A JP S545751 A JPS545751 A JP S545751A
Authority
JP
Japan
Prior art keywords
information reader
condensing
holograms
emitted
narrow
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.)
Granted
Application number
JP7085977A
Other languages
Japanese (ja)
Other versions
JPS5760609B2 (en
Inventor
Hiroyuki Ikeda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7085977A priority Critical patent/JPS545751A/en
Publication of JPS545751A publication Critical patent/JPS545751A/en
Publication of JPS5760609B2 publication Critical patent/JPS5760609B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To narrow the dynamic range of photoelectric transducing systems, facilitate constitution and increase reliability by condensing the reflected light of the scanning holograms corresponding to the opening areas of respective condensing holograms and so setting the signal intensities being emitted that they become constant.
COPYRIGHT: (C)1979,JPO&Japio
JP7085977A 1977-06-15 1977-06-15 Information reader Granted JPS545751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7085977A JPS545751A (en) 1977-06-15 1977-06-15 Information reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7085977A JPS545751A (en) 1977-06-15 1977-06-15 Information reader

Publications (2)

Publication Number Publication Date
JPS545751A true JPS545751A (en) 1979-01-17
JPS5760609B2 JPS5760609B2 (en) 1982-12-20

Family

ID=13443699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7085977A Granted JPS545751A (en) 1977-06-15 1977-06-15 Information reader

Country Status (1)

Country Link
JP (1) JPS545751A (en)

Also Published As

Publication number Publication date
JPS5760609B2 (en) 1982-12-20

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