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Publication number
JP2009075492A5
JP2009075492A5 JP2007246547A JP2007246547A JP2009075492A5 JP 2009075492 A5 JP2009075492 A5 JP 2009075492A5 JP 2007246547 A JP2007246547 A JP 2007246547A JP 2007246547 A JP2007246547 A JP 2007246547A JP 2009075492 A5 JP2009075492 A5 JP 2009075492A5
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JP
Japan
Prior art keywords
light emitting
arrangement direction
projection member
emitting point
image
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Application number
JP2007246547A
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Japanese (ja)
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JP2009075492A (en
JP5096091B2 (en
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Priority to JP2007246547A priority Critical patent/JP5096091B2/en
Priority claimed from JP2007246547A external-priority patent/JP5096091B2/en
Publication of JP2009075492A publication Critical patent/JP2009075492A/en
Publication of JP2009075492A5 publication Critical patent/JP2009075492A5/ja
Application granted granted Critical
Publication of JP5096091B2 publication Critical patent/JP5096091B2/en
Expired - Fee Related legal-status Critical Current
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Claims (5)

（ａ）直線状に配列された複数の発光点を備えた発光点アレイと、
（ｂ）該発光点アレイの像を拡大して露光像を形成する投影部材とを有するとともに、
（ｃ）該投影部材を構成する複数のレンズにおける少なくとも一つの面は、発光点の配列方向と、発光点の配列方向に対して直交する方向とで異なる面形状を有し、
（ｄ）前記投影部材が取り込む光線において、発光点の配列方向に対して直交する方向の開口角は、発光点の配列方向の開口角より小さくされることを特徴とする露光装置。 (A) a light emitting spot array comprising a plurality of light emitting spots arranged in a straight line;
(B) a projection member for enlarging the image of the light emitting spot array to form an exposure image;
(C) At least one surface of the plurality of lenses constituting the projection member has different surface shapes in the arrangement direction of the light emitting points and the direction orthogonal to the arrangement direction of the light emitting points,
(D) An exposure apparatus characterized in that an opening angle in a direction orthogonal to a light emitting point arrangement direction is smaller than an opening angle in a light emitting point arrangement direction in a light beam captured by the projection member. 前記複数のレンズにおける少なくとも一つの面の面形状はアナモルフィック非球面にされる請求項１に記載の露光装置。   The exposure apparatus according to claim 1, wherein a surface shape of at least one surface of the plurality of lenses is an anamorphic aspheric surface. 前記複数のレンズにおける少なくとも一つの面の面形状はトロイダル面にされる請求項１に記載の露光装置。   The exposure apparatus according to claim 1, wherein a surface shape of at least one surface of the plurality of lenses is a toroidal surface. 前記発光点アレイは、前記発光点の配列方向に対して直交する方向に複数配設され、発光点マトリクスを形成する請求項１に記載の露光装置。   The exposure apparatus according to claim 1, wherein a plurality of the light emitting point arrays are arranged in a direction orthogonal to the arrangement direction of the light emitting points to form a light emitting point matrix. 露光装置が搭載された画像形成装置において、
（ａ）前記露光装置は、直線状に配列された複数の発光点を備えた発光点アレイ、及び該発光点アレイの像を拡大して露光像を形成する投影部材を有するとともに、
（ｂ）該投影部材を構成する複数のレンズにおける少なくとも一つの面は、発光点の配列方向と、発光点の配列方向に対して直交する方向とで異なる面形状を有し、
（ｃ）前記投影部材が取り込む光線において、発光点の配列方向に対して直交する方向の開口角は、発光点の配列方向の開口角より小さくされることを特徴とする画像形成装置。 In the image forming apparatus EXPOSURE device mounted,
(A) The exposure apparatus includes a light emitting point array having a plurality of light emitting points arranged linearly, and a projection member that enlarges an image of the light emitting point array to form an exposure image.
(B) At least one surface of the plurality of lenses constituting the projection member has different surface shapes in the arrangement direction of the light emitting points and the direction orthogonal to the arrangement direction of the light emitting points,
(C) An image forming apparatus characterized in that an opening angle in a direction orthogonal to a light emitting point arrangement direction is smaller than an opening angle in a light emitting point arrangement direction in a light beam captured by the projection member .
JP2007246547A 2007-09-25 2007-09-25 Exposure apparatus and image forming apparatus Expired - Fee Related JP5096091B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007246547A JP5096091B2 (en) 2007-09-25 2007-09-25 Exposure apparatus and image forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007246547A JP5096091B2 (en) 2007-09-25 2007-09-25 Exposure apparatus and image forming apparatus

Publications (3)

Publication Number Publication Date
JP2009075492A JP2009075492A (en) 2009-04-09
JP2009075492A5 true JP2009075492A5 (en) 2011-06-16
JP5096091B2 JP5096091B2 (en) 2012-12-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007246547A Expired - Fee Related JP5096091B2 (en) 2007-09-25 2007-09-25 Exposure apparatus and image forming apparatus

Country Status (1)

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JP (1) JP5096091B2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6163870A (en) * 1984-09-05 1986-04-02 Fuji Xerox Co Ltd Optical writing device for electrophotographic printer
JPH09109455A (en) * 1995-10-20 1997-04-28 Ricoh Co Ltd Led array head

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