JP2005150859A5 - - Google Patents

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JP2005150859A5
JP2005150859A5 JP2003381828A JP2003381828A JP2005150859A5 JP 2005150859 A5 JP2005150859 A5 JP 2005150859A5 JP 2003381828 A JP2003381828 A JP 2003381828A JP 2003381828 A JP2003381828 A JP 2003381828A JP 2005150859 A5 JP2005150859 A5 JP 2005150859A5
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Prior art keywords
image
projection
optical system
angle
information
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JP2003381828A
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JP4474144B2 (en
JP2005150859A (en
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Claims (11)

原画像を形成する画像形成素子と、
前記原画像を被投射面に投射する投射光学系と、
前記被投射面に対する前記投射光学系の光軸の角度に関する情報を得る情報取得手段と、
前記情報に基づいて投射画像の輝度を調整する輝度調整手段とを有することを特徴とする画像投射装置。
An image forming element for forming an original image;
A projection optical system for projecting the original image onto a projection surface;
Information acquisition means for obtaining information on the angle of the optical axis of the projection optical system with respect to the projection surface;
An image projecting apparatus comprising: a brightness adjusting unit that adjusts the brightness of the projected image based on the information.
画像信号に応じた原画像を形成する画像形成素子と、
前記原画像を被投射面に投射する投射光学系と、
前記被投射面に対する前記投射光学系の光軸の角度に関する情報を得る角度情報取得手段と、
前記情報に基づいて、投射画像の輝度むらを補正するように前記画像信号を処理する信号処理手段とを有することを特徴とする画像投射装置。
An image forming element that forms an original image according to an image signal;
A projection optical system for projecting the original image onto a projection surface;
Angle information acquisition means for obtaining information related to the angle of the optical axis of the projection optical system with respect to the projection surface;
An image projection apparatus comprising: signal processing means for processing the image signal so as to correct luminance unevenness of the projection image based on the information.
前記角度情報取得手段は、該画像投射装置から前記被投射面上の複数点までの距離をそれぞれ測定し、これらの測定結果に基づいて前記情報を得ることを特徴とする請求項2に記載の画像投射装置。 The said angle information acquisition means measures the distance from the said image projection apparatus to several points on the said to-be-projected surface, respectively , The said information is obtained based on these measurement results, Image projection device. 前記角度情報取得手段は、前記被投射面上の少なくとも3点で距離を測定し、
前記信号処理手段は、水平方向および垂直方向での前記輝度むらを補正するように前記画像信号を処理することを特徴とする請求項3に記載の画像投射装置。
The angle information acquisition means measures the distance at at least three points on the projection surface;
The image projection apparatus according to claim 3, wherein the signal processing unit processes the image signal so as to correct the luminance unevenness in a horizontal direction and a vertical direction.
前記角度情報取得手段は、前記画像投射装置および前記被投射面の設置角度を測定し、その測定結果に基づいて前記情報を得ることを特徴とする請求項2に記載の画像投射装置。   The image projection apparatus according to claim 2, wherein the angle information acquisition unit measures an installation angle of the image projection apparatus and the projection surface, and obtains the information based on a measurement result. 前記投射光学系のズーム比を検出し、その検出結果に基づいて投射画角に関する画角情報を得る画角情報取得手段をさらに有し、
前記信号処理手段は、前記画角情報にも基づいて、前記投射画像の輝度むらを補正するように前記画像信号を処理することを特徴とする請求項2に記載の画像投射装置。
Further comprising angle-of-view information acquisition means for detecting a zoom ratio of the projection optical system and obtaining angle-of-view information related to the projected angle of view based on the detection result;
The image projection apparatus according to claim 2, wherein the signal processing unit processes the image signal so as to correct luminance unevenness of the projection image based on the angle-of-view information.
前記信号処理手段は、前記情報に基づいて、前記投射画像の幾何学歪をも補正するように前記画像信号を処理することを特徴とする請求項2に記載の画像投射装置。   The image projection apparatus according to claim 2, wherein the signal processing unit processes the image signal so as to correct a geometric distortion of the projection image based on the information. 原画像を形成する画像形成素子と、
前記原画像を被投射面に投射する投射光学系と、
前記画像形成素子に対して前記投射光学系を相対移動させる移動手段と、
前記移動手段による前記投射光学系の相対移動量に基づいて投射画像の輝度を調整する輝度調整手段とを有することを特徴とする画像投射装置。
An image forming element for forming an original image;
A projection optical system for projecting the original image onto a projection surface;
Moving means for moving the projection optical system relative to the image forming element;
An image projecting apparatus comprising: a brightness adjusting unit configured to adjust a brightness of a projected image based on a relative movement amount of the projection optical system by the moving unit.
画像信号に応じた原画像を形成する画像形成素子と、
前記原画像を被投射面に投射する投射光学系と、
前記画像形成素子に対して前記投射光学系を、前記投射光学系の光軸に垂直な方向で相対移動させる移動手段と、
前記移動手段による前記投射光学系の相対移動量に基づいて、投射画像の輝度むらを補正するように前記画像信号を処理する信号処理手段とを有することを特徴とする画像投射装置。
An image forming element that forms an original image according to an image signal;
A projection optical system for projecting the original image onto a projection surface;
Moving means for moving the projection optical system relative to the image forming element in a direction perpendicular to the optical axis of the projection optical system;
An image projection apparatus comprising: signal processing means for processing the image signal so as to correct luminance unevenness of a projection image based on a relative movement amount of the projection optical system by the movement means.
前記投射光学系の光軸を含む中央部から周辺部までの透過光量特性に応じた補正データを複数記憶する記憶手段をさらに有し、
前記信号処理手段は、複数の前記補正データの中から前記投射光学系の相対移動量に応じた補正データを読み出して、前記画像信号の処理に使用することを特徴とする請求項9に記載の画像投射装置。
A storage means for storing a plurality of correction data corresponding to the transmitted light amount characteristics from the central portion to the peripheral portion including the optical axis of the projection optical system;
10. The signal processing unit according to claim 9, wherein the signal processing unit reads correction data corresponding to a relative movement amount of the projection optical system from a plurality of the correction data, and uses the correction data for processing the image signal. Image projection device.
請求項1から10のいずれか1つに記載の画像投射装置と、
前記画像投射装置に画像情報を供給する画像情報供給装置とを有することを特徴とする画像投射システム。
An image projection device according to any one of claims 1 to 10 ,
An image projection system comprising: an image information supply device that supplies image information to the image projection device.
JP2003381828A 2003-11-11 2003-11-11 Image projection device Expired - Fee Related JP4474144B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003381828A JP4474144B2 (en) 2003-11-11 2003-11-11 Image projection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003381828A JP4474144B2 (en) 2003-11-11 2003-11-11 Image projection device

Publications (3)

Publication Number Publication Date
JP2005150859A JP2005150859A (en) 2005-06-09
JP2005150859A5 true JP2005150859A5 (en) 2006-12-28
JP4474144B2 JP4474144B2 (en) 2010-06-02

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JP2003381828A Expired - Fee Related JP4474144B2 (en) 2003-11-11 2003-11-11 Image projection device

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4961923B2 (en) * 2006-09-15 2012-06-27 ブラザー工業株式会社 Projection device
JP2011176629A (en) * 2010-02-24 2011-09-08 Sanyo Electric Co Ltd Controller and projection type video display device
JP2013190671A (en) * 2012-03-14 2013-09-26 Ricoh Co Ltd Image projection device, brightness processing method, and program
JP6056220B2 (en) * 2012-07-02 2017-01-11 セイコーエプソン株式会社 Projector and control method thereof
JP2016177198A (en) * 2015-03-20 2016-10-06 アルプス電気株式会社 Image display device

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JP3118515B2 (en) * 1998-06-17 2000-12-18 エヌイーシービューテクノロジー株式会社 Projection display device
JP3998840B2 (en) * 1998-12-24 2007-10-31 セイコーエプソン株式会社 Projection display apparatus and image processing method therefor
JP3509652B2 (en) * 1999-08-23 2004-03-22 日本電気株式会社 Projector device
JP2003018502A (en) * 2001-06-29 2003-01-17 Toshiba Corp Projection-type display device
JP3680807B2 (en) * 2002-03-20 2005-08-10 セイコーエプソン株式会社 Projector to correct keystone distortion
JP2003319292A (en) * 2002-04-22 2003-11-07 Mitsubishi Electric Corp Projection type image display device

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