JPS554019A - Light deflector - Google Patents
Light deflectorInfo
- 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
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.
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)
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 |
-
1978
- 1978-06-22 JP JP7606778A patent/JPS554019A/en active Pending
Cited By (7)
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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