JPS5283238A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS5283238A
JPS5283238A JP15813375A JP15813375A JPS5283238A JP S5283238 A JPS5283238 A JP S5283238A JP 15813375 A JP15813375 A JP 15813375A JP 15813375 A JP15813375 A JP 15813375A JP S5283238 A JPS5283238 A JP S5283238A
Authority
JP
Japan
Prior art keywords
hologram
optical scanner
order light
moved
range
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
JP15813375A
Other languages
Japanese (ja)
Inventor
Hiroyuki Ikeda
Moritoshi Ando
Yushi Inagaki
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 JP15813375A priority Critical patent/JPS5283238A/en
Publication of JPS5283238A publication Critical patent/JPS5283238A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

PURPOSE: To preclude noises in reading a bar code by cutting out a hologram in such a way that, when the hologram is moved relatively with respect to a light beam, the imaging range of first order light lies in the range in which the images of zero and second order light are movable when the hologram is not moved.
COPYRIGHT: (C)1977,JPO&Japio
JP15813375A 1975-12-30 1975-12-30 Optical scanner Pending JPS5283238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15813375A JPS5283238A (en) 1975-12-30 1975-12-30 Optical scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15813375A JPS5283238A (en) 1975-12-30 1975-12-30 Optical scanner

Publications (1)

Publication Number Publication Date
JPS5283238A true JPS5283238A (en) 1977-07-12

Family

ID=15664988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15813375A Pending JPS5283238A (en) 1975-12-30 1975-12-30 Optical scanner

Country Status (1)

Country Link
JP (1) JPS5283238A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039273A (en) * 1983-08-12 1985-03-01 Fujitsu Ltd Optical reader

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502553A (en) * 1973-05-04 1975-01-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502553A (en) * 1973-05-04 1975-01-11

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039273A (en) * 1983-08-12 1985-03-01 Fujitsu Ltd Optical reader
JPH0145108B2 (en) * 1983-08-12 1989-10-02 Fujitsu Ltd

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