JPS5238944A - Optical system for scanning - Google Patents

Optical system for scanning

Info

Publication number
JPS5238944A
JPS5238944A JP11504575A JP11504575A JPS5238944A JP S5238944 A JPS5238944 A JP S5238944A JP 11504575 A JP11504575 A JP 11504575A JP 11504575 A JP11504575 A JP 11504575A JP S5238944 A JPS5238944 A JP S5238944A
Authority
JP
Japan
Prior art keywords
optical system
scanning
scanned
seattered
bear
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
JP11504575A
Other languages
Japanese (ja)
Inventor
Yukichi Niwa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP11504575A priority Critical patent/JPS5238944A/en
Publication of JPS5238944A publication Critical patent/JPS5238944A/en
Pending legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To permit a surface to be scanned and an optical system for illumination with which said surface is scanned to bear a given relation between the positions thereof by providing an optical system for receiving a part of a flux of light seattered on said surface to be scanned.
COPYRIGHT: (C)1977,JPO&Japio
JP11504575A 1975-09-23 1975-09-23 Optical system for scanning Pending JPS5238944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11504575A JPS5238944A (en) 1975-09-23 1975-09-23 Optical system for scanning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11504575A JPS5238944A (en) 1975-09-23 1975-09-23 Optical system for scanning

Publications (1)

Publication Number Publication Date
JPS5238944A true JPS5238944A (en) 1977-03-25

Family

ID=14652813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11504575A Pending JPS5238944A (en) 1975-09-23 1975-09-23 Optical system for scanning

Country Status (1)

Country Link
JP (1) JPS5238944A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5650353A (en) * 1979-10-02 1981-05-07 Ricoh Co Ltd Minute gap holding unit
JPS5732410A (en) * 1980-07-14 1982-02-22 Discovision Ass Device for detecting focal error
JPS61224144A (en) * 1985-03-29 1986-10-04 Hitachi Ltd Focus error detector
JPH01214810A (en) * 1988-02-23 1989-08-29 Nec Corp Focus point detector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5650353A (en) * 1979-10-02 1981-05-07 Ricoh Co Ltd Minute gap holding unit
JPS5732410A (en) * 1980-07-14 1982-02-22 Discovision Ass Device for detecting focal error
JPS61224144A (en) * 1985-03-29 1986-10-04 Hitachi Ltd Focus error detector
JPH01214810A (en) * 1988-02-23 1989-08-29 Nec Corp Focus point detector

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