JPWO2021038949A1 - 走査光学系の製造方法 - Google Patents
走査光学系の製造方法 Download PDFInfo
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- JPWO2021038949A1 JPWO2021038949A1 JP2020552912A JP2020552912A JPWO2021038949A1 JP WO2021038949 A1 JPWO2021038949 A1 JP WO2021038949A1 JP 2020552912 A JP2020552912 A JP 2020552912A JP 2020552912 A JP2020552912 A JP 2020552912A JP WO2021038949 A1 JPWO2021038949 A1 JP WO2021038949A1
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- optical system
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- 230000003287 optical effect Effects 0.000 title claims abstract description 155
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000003384 imaging method Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000004907 flux Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003050 poly-cycloolefin Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/113—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/12—Scanning systems using multifaceted mirrors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/12—Scanning systems using multifaceted mirrors
- G02B26/125—Details of the optical system between the polygonal mirror and the image plane
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
- B41J2/47—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using the combination of scanning and modulation of light
- B41J2/471—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using the combination of scanning and modulation of light using dot sequential main scanning by means of a light deflector, e.g. a rotating polygonal mirror
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Laser Beam Printer (AREA)
- Lenses (AREA)
Abstract
Description
0.75 ≦ f/W1 ≦ 0.85 (1)
0.75 ≦ f/W2 ≦ 0.85 (2)
0.7 ≦ Φ2/Φ1≦ 0.8 (3)
2.4 ≦ β≦ 3.2 (4)
を満たす。
0 ≦ |ΔD| ≦ 4.35 mm (5)
を満たすように該横倍率を調整する。
300 mm≦ W2 (6)
を満たす。
偏向角θが正の場合
偏向角θが負の場合
ここで、βは副走査方向断面における走査レンズ120の横倍率である。
y:主走査方向座標
x:副走査方向座標
z:サグ(原点はレンズ面の頂点)
k:コーニック係数
Ry:主走査方向断面曲率半径
rx(y):副走査方向断面の主走査方向座標yにおける曲率半径
rx(0):副走査方向断面の光軸上の曲率半径
Ai:主走査方向断面の非球面係数(i = 1、2、3、4・・・)
Bi:副走査方向断面曲率半径を決定する係数(i = 1、2、3、4・・・)
表4は実施例1‐3の特徴を示す表である。表4においてfはシステム焦点距離、W1及びW2はそれぞれ第1及び第2の走査光学系の有効走査幅、Φ1及びΦ2は第1及び第2のポリゴンミラーの内接円の直径、βは副走査方向断面における結像光学系の横倍率、ΔDは像面湾曲変化量の絶対値の最大値を表す。なお、表1‐3におけるポリゴンミラーの直径30ミリメータの外接円は直径25.98ミリメータの内接円に相当する。
表4によれば、実施例1‐3において式(1)−(6)は満たされる。
Claims (5)
- 走査レンズを含む結像光学系及び入射光学系を変えることなく、ポリゴンミラーのみを変えることによって有効走査幅の異なる走査光学系が得られる走査光学系の製造方法であって、
第1の値の有効走査幅に対応する第1のポリゴンミラーを使用して第1の走査光学系を設計するステップと、
偏向角が0である場合の光線の該第1のポリゴンミラーの反射面の反射点である該第1の走査光学系の偏向基準点の位置に偏向基準点を定めて該第1の値よりも小さい第2の値の有効走査幅に対応する第2のポリゴンミラーを備える第2の光学系を設計するステップと、
副走査方向断面における該結像光学系の横倍率を調整するように該走査レンズの形状及び位置を調整するステップと、を含む走査光学系の製造方法。 - 該第2の光学系を設計するステップにおいて、偏向角が0である場合の該第1のポリゴンミラーの反射面に垂直で該第1のポリゴンミラーの中心点を通る直線上に該第2のポリゴンミラーの中心点が位置するようにする請求項1に記載の走査光学系の製造方法。
- システム焦点距離をf、該第1の値をW1、該第2の値をW2、該第1のポリゴンミラーの内接円の半径をΦ1、第2のポリゴンミラーの内接円の半径をΦ2、副走査方向断面における該結像光学系の横倍率をβとして
0.75 ≦ f/W1 ≦ 0.85 (1)
0.75 ≦ f/W2 ≦ 0.85 (2)
0.7 ≦ Φ2/Φ1≦ 0.8 (3)
2.4 ≦ β≦ 3.2 (4)
を満たす請求項1または2に記載の走査光学系の製造方法。 - 副走査方向断面における該結像光学系の横倍率を調整するステップにおいて、該第1の走査光学系の副走査方向断面における像面湾曲量と該第2の走査光学系の副走査方向断面における像面湾曲量との差の絶対値の最大値をΔDとして
0 ≦ |ΔD| ≦ 4.35 mm (5)
を満たすように該横倍率を調整する請求項1から3のいずれかに記載の走査光学系の製造方法。 - 300 mm≦ W2 (6)
を満たす請求項1から4のいずれかに記載の走査光学系の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201962893299P | 2019-08-29 | 2019-08-29 | |
US62/893,299 | 2019-08-29 | ||
PCT/JP2020/016439 WO2021038949A1 (ja) | 2019-08-29 | 2020-04-14 | 走査光学系の製造方法 |
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JP6829514B1 JP6829514B1 (ja) | 2021-02-10 |
JPWO2021038949A1 true JPWO2021038949A1 (ja) | 2021-09-27 |
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US (1) | US11860357B2 (ja) |
JP (1) | JP6829514B1 (ja) |
CN (1) | CN114303087B (ja) |
DE (1) | DE112020004080T5 (ja) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2844648A (en) * | 1954-04-23 | 1958-07-22 | Fairchild Camera Instr Co | Scanning mirror |
JPH04318807A (ja) * | 1991-04-18 | 1992-11-10 | Fuji Photo Film Co Ltd | 光走査装置 |
JPH1010445A (ja) | 1996-06-26 | 1998-01-16 | Ricoh Co Ltd | 同期検知光学系 |
US5867298A (en) * | 1996-12-16 | 1999-02-02 | Eastman Kodak Company | Dual format pre-objective scanner |
US5861977A (en) * | 1997-02-26 | 1999-01-19 | Eastman Kodak Company | Dual format dual resolution scanner with off-axis beams |
JP2000180744A (ja) * | 1998-12-18 | 2000-06-30 | Fuji Xerox Co Ltd | 光位置検出装置及び光走査装置 |
JP2002048993A (ja) * | 2000-05-25 | 2002-02-15 | Canon Inc | 光走査装置及びそれを用いた画像形成装置 |
JP4191562B2 (ja) * | 2002-08-21 | 2008-12-03 | Hoya株式会社 | 走査光学系の生産方法 |
JP4293780B2 (ja) * | 2002-11-29 | 2009-07-08 | Hoya株式会社 | 走査光学系 |
JP2006326901A (ja) * | 2005-05-24 | 2006-12-07 | Ricoh Co Ltd | 光学ハウジング、光走査装置および画像形成装置 |
JP2007322608A (ja) * | 2006-05-31 | 2007-12-13 | Toshiba Corp | 光走査装置、画像形成装置、光走査方法 |
JP4965290B2 (ja) * | 2007-03-16 | 2012-07-04 | 株式会社リコー | 画像形成装置 |
TWI363698B (en) * | 2009-03-31 | 2012-05-11 | E Pin Optical Industry Co Ltd | Two optical elements fθ lens of short focal distance for laser scanning unit |
JP5948734B2 (ja) * | 2011-05-17 | 2016-07-06 | ブラザー工業株式会社 | 光走査装置の製造方法 |
JP6398891B2 (ja) * | 2015-06-25 | 2018-10-03 | 京セラドキュメントソリューションズ株式会社 | 光走査装置及びこれを用いた画像形成装置 |
-
2020
- 2020-04-14 CN CN202080060182.5A patent/CN114303087B/zh active Active
- 2020-04-14 DE DE112020004080.1T patent/DE112020004080T5/de active Pending
- 2020-04-14 JP JP2020552912A patent/JP6829514B1/ja active Active
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2022
- 2022-02-08 US US17/667,005 patent/US11860357B2/en active Active
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Publication number | Publication date |
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DE112020004080T5 (de) | 2022-05-19 |
CN114303087A (zh) | 2022-04-08 |
CN114303087B (zh) | 2023-09-22 |
US20220163793A1 (en) | 2022-05-26 |
JP6829514B1 (ja) | 2021-02-10 |
US11860357B2 (en) | 2024-01-02 |
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