JP2006171435A5 - - Google Patents
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- JP2006171435A5 JP2006171435A5 JP2004364532A JP2004364532A JP2006171435A5 JP 2006171435 A5 JP2006171435 A5 JP 2006171435A5 JP 2004364532 A JP2004364532 A JP 2004364532A JP 2004364532 A JP2004364532 A JP 2004364532A JP 2006171435 A5 JP2006171435 A5 JP 2006171435A5
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- Prior art keywords
- optical
- optical system
- scanning device
- light source
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- 230000003287 optical Effects 0.000 claims 36
- 239000000463 material Substances 0.000 claims 4
- 238000003384 imaging method Methods 0.000 claims 3
- 239000011521 glass Substances 0.000 claims 1
Claims (9)
前記第2の光学系は、1枚以上のプラスチック製の屈折面を有する屈折光学素子と、前記屈折光学素子と同符号の1枚以上の屈折面と回折面を有する回折光学素子を有し、
前記第2の光学系の副走査断面内の合成のパワー、前記第2の光学系の結像倍率を各々φ、β、
前記第2の光学系を構成する前記偏向手段側から数えて第i番目の屈折光学素子の副走査断面内のパワー又は回折光学素子の屈折面の合成の副走査断面内のパワーをφri、
前記第2の光学系を構成する前記偏向手段側から数えて第i番目の屈折光学素子又は回折光学素子の材料の屈折率、波長変化に対する屈折率変化率を各々をni、dni/dλ、
前記第2の光学系を構成する回折光学素子の回折面の副走査断面内の合成のパワーをφdo、
前記第2の光学系の副走査方向の射出側のFナンバーをFnoとするとき
なる条件を満足することを特徴とする光走査装置。 A light source unit that emits a light beam having a wavelength λ of 450 nm or less; a first optical system that guides the light beam emitted from the light source unit to the deflecting unit; A second optical system for imaging, an optical scanning device comprising:
The second optical system includes a refracting optical element having one or more plastic refracting surfaces, and a diffractive optical element having one or more refracting surfaces and diffractive surfaces of the same sign as the refracting optical element,
The combined power in the sub-scan section of the second optical system and the imaging magnification of the second optical system are φ, β,
Φr i , the power in the sub-scan section of the i-th refracting optical element counted from the deflecting means side constituting the second optical system or the power in the sub-scan section of the combined refracting surface of the diffractive optical element,
The refractive index of the material of the i-th refracting optical element or diffractive optical element, which is counted from the deflecting means side constituting the second optical system, and the refractive index change rate with respect to the wavelength change are expressed as n i and dn i / dλ, respectively. ,
The combined power in the sub-scan section of the diffraction surface of the diffractive optical element constituting the second optical system is φdo,
When the F number on the exit side in the sub-scanning direction of the second optical system is Fno
An optical scanning device characterized by satisfying the following conditions.
25<ν<55
なる条件を満足するガラスから構成されているコリメータレンズを有していることを特徴とする請求項1に記載の光走査装置。 The first optical system has one or more collimator lenses for converting a light beam emitted from the light source means into a substantially parallel light beam including a parallel light beam, and when the Abbe number of the material is ν,
25 <ν <55
The optical scanning device according to claim 1, further comprising a collimator lens made of glass that satisfies the following condition.
0.03(nm/℃)<dλ/dt<0.10(nm/℃)
なる条件を満足することを特徴とする請求項1又は2に記載の光走査装置。 The light source means has a wavelength temperature characteristic, which is a fluctuation in oscillation wavelength accompanying a temperature change, as dλ / dt
0.03 (nm / ° C) <dλ / dt <0.10 (nm / ° C)
The optical scanning device according to claim 1, wherein the following condition is satisfied.
−1.5<β<−0.5
なる条件を満足することを特徴とする請求項1乃至6の何れか1項に記載の光走査装置。 The imaging magnification β of the second optical system is
−1.5 <β <−0.5
The optical scanning device according to claim 1 , wherein the following condition is satisfied.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004364532A JP4455309B2 (en) | 2004-12-16 | 2004-12-16 | Optical scanning device and image forming apparatus using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004364532A JP4455309B2 (en) | 2004-12-16 | 2004-12-16 | Optical scanning device and image forming apparatus using the same |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006171435A JP2006171435A (en) | 2006-06-29 |
JP2006171435A5 true JP2006171435A5 (en) | 2008-01-31 |
JP4455309B2 JP4455309B2 (en) | 2010-04-21 |
Family
ID=36672266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004364532A Expired - Fee Related JP4455309B2 (en) | 2004-12-16 | 2004-12-16 | Optical scanning device and image forming apparatus using the same |
Country Status (1)
Country | Link |
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JP (1) | JP4455309B2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4645574B2 (en) * | 2006-10-17 | 2011-03-09 | セイコーエプソン株式会社 | Scanning optical device |
US7609428B2 (en) * | 2007-05-30 | 2009-10-27 | Kabushiki Kashia Toshiba | Optical beam scanning device, optical beam scanning method |
US7609429B2 (en) * | 2007-05-30 | 2009-10-27 | Kabushiki Kaisha Toshiba | Optical beam scanning device, optical beam scanning method |
CN101498812B (en) * | 2008-01-30 | 2011-04-13 | 黄峰彪 | Method for integrating multiple images into one image and its display module |
JP2011154118A (en) * | 2010-01-26 | 2011-08-11 | Kyocera Mita Corp | Light scanning optical device, and image forming apparatus using the same |
-
2004
- 2004-12-16 JP JP2004364532A patent/JP4455309B2/en not_active Expired - Fee Related
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