JPS554019A - Light deflector - Google Patents

Light deflector

Info

Publication number
JPS554019A
JPS554019A JP7606778A JP7606778A JPS554019A JP S554019 A JPS554019 A JP S554019A JP 7606778 A JP7606778 A JP 7606778A JP 7606778 A JP7606778 A JP 7606778A JP S554019 A JPS554019 A JP S554019A
Authority
JP
Japan
Prior art keywords
lens
size
polyhedral mirror
window
exit window
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
JP7606778A
Other languages
Japanese (ja)
Inventor
Toru Kameyama
Kazuo Minoura
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 JP7606778A priority Critical patent/JPS554019A/en
Publication of JPS554019A publication Critical patent/JPS554019A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To make the device smaller in size and simpler and achieve cost reduction by providing an optical member for imaging the beam from a light source on the scanned plane to at least one of the incident window and exit window of the beam. CONSTITUTION:An imaging lens 7 for scanning is provided to the exit window of a rotary polyhedral mirror 1 and is let to serve also as exit window glass. When the angle theta of deflection of the beam by the polyhedral mirror 1 is constant, the size of the lens 7 depends upon the distance on the axis of the deflecting point P of the polyhedral mirror 1 and the face 7a on the deflector side of the lens 7. Hence, in case the lens 7 is provided to the exist window of the outer barrel case, the lens 7 may be provided near the deflection point P and therefore the lens 7 is miniaturized. Thereby, the device may be made smaller in size and simpler and its production cost reduced.
JP7606778A 1978-06-22 1978-06-22 Light deflector Pending JPS554019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7606778A JPS554019A (en) 1978-06-22 1978-06-22 Light deflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7606778A JPS554019A (en) 1978-06-22 1978-06-22 Light deflector

Publications (1)

Publication Number Publication Date
JPS554019A true JPS554019A (en) 1980-01-12

Family

ID=13594423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7606778A Pending JPS554019A (en) 1978-06-22 1978-06-22 Light deflector

Country Status (1)

Country Link
JP (1) JPS554019A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5770509A (en) * 1980-10-21 1982-05-01 Toshiba Corp Optical scanner
JPS58220117A (en) * 1982-06-04 1983-12-21 ドクトル−インジエニエ−ル・ル−ドルフ・ヘル・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Optical deflector
JPS6167939U (en) * 1984-10-12 1986-05-09
US4846539A (en) * 1987-05-12 1989-07-11 Ricoh Company, Ltd. Fθ lens system for use in light scanning device
JPH0843755A (en) * 1994-05-16 1996-02-16 Bayer Corp Optical enclosure for high-speed revolution-beam deflector
US5524475A (en) * 1994-11-10 1996-06-11 Atlantic Richfield Company Measuring vibration of a fluid stream to determine gas fraction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5770509A (en) * 1980-10-21 1982-05-01 Toshiba Corp Optical scanner
JPS58220117A (en) * 1982-06-04 1983-12-21 ドクトル−インジエニエ−ル・ル−ドルフ・ヘル・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Optical deflector
JPS6167939U (en) * 1984-10-12 1986-05-09
JPH022501Y2 (en) * 1984-10-12 1990-01-22
US4846539A (en) * 1987-05-12 1989-07-11 Ricoh Company, Ltd. Fθ lens system for use in light scanning device
JPH0843755A (en) * 1994-05-16 1996-02-16 Bayer Corp Optical enclosure for high-speed revolution-beam deflector
US5524475A (en) * 1994-11-10 1996-06-11 Atlantic Richfield Company Measuring vibration of a fluid stream to determine gas fraction

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