JP2008250024A5 - - Google Patents
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- JP2008250024A5 JP2008250024A5 JP2007091686A JP2007091686A JP2008250024A5 JP 2008250024 A5 JP2008250024 A5 JP 2008250024A5 JP 2007091686 A JP2007091686 A JP 2007091686A JP 2007091686 A JP2007091686 A JP 2007091686A JP 2008250024 A5 JP2008250024 A5 JP 2008250024A5
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- optical
- coherent light
- unit
- optical path
- optical element
- Prior art date
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Claims (9)
前記光伝達手段は光路変更手段を有し、
該光路変更手段は偏光依存性と拡散機能とを有する光学素子と、スペックルを低減するように前記光学素子を移動若しくは変形させる駆動手段とを有することを特徴とする光学ユニット。 An optical unit comprising one or more coherent light sources that emit coherent light, and a light transmission unit that projects the emitted light obtained from the coherent light source onto an image display element,
The light transmission means has optical path changing means,
The optical path changing means includes an optical element having polarization dependence and a diffusion function, and a driving means for moving or deforming the optical element so as to reduce speckle.
前記コヒーレント光源と前記光学素子との間に前記コヒーレント光源から出射された光を２次元に走査する走査光学系を備えることを特徴とする請求項１に記載の光学ユニット。The optical unit according to claim 1, further comprising a scanning optical system that two-dimensionally scans the light emitted from the coherent light source between the coherent light source and the optical element.
前記光伝達手段は光路変更手段を有し、
該光路変更手段は偏光依存性と拡散機能とを有する光学素子と、スペックルを低減するように前記コヒーレント光源と前記映像表示素子との間の光路長を変化させる駆動手段とを有することを特徴とする光学ユニット。 An optical unit comprising one or more coherent light sources that emit coherent light, and a light transmission unit that projects the emitted light obtained from the coherent light source onto an image display element,
The light transmission means has optical path changing means,
The optical path changing means includes an optical element having polarization dependency and a diffusion function, and a driving means for changing an optical path length between the coherent light source and the image display element so as to reduce speckle. An optical unit.
前記光伝達手段は光路変更手段を有し、
該光路変更手段は偏光依存性と拡散機能とを有する光学素子と、スペックルを低減するように時間と共に前記光学素子の位置を略光軸方向に変化させる駆動手段とを有することを特徴とする光学ユニット。 An optical unit comprising one or more coherent light sources that emit coherent light, and a light transmission unit that projects the emitted light obtained from the coherent light source onto an image display element,
The light transmission means has optical path changing means,
The optical path changing means includes an optical element having polarization dependence and a diffusing function, and a driving means for changing the position of the optical element in the optical axis direction with time so as to reduce speckle. Optical unit.
前記光伝達手段は光路変更手段を有し、
該光路変更手段は偏光依存性と拡散機能とを有する光学素子と、スペックルを低減するように時間と共に前記光学素子の形状を略光軸方向に変化させる駆動手段とを有することを特徴とする光学ユニット。 An optical unit comprising one or more coherent light sources that emit coherent light, and a light transmission unit that projects the emitted light obtained from the coherent light source onto an image display element,
The light transmission means has optical path changing means,
The optical path changing means includes an optical element having polarization dependence and a diffusing function, and a driving means for changing the shape of the optical element in the direction of the optical axis with time so as to reduce speckle. Optical unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007091686A JP5302512B2 (en) | 2007-03-30 | 2007-03-30 | Optical unit and image display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007091686A JP5302512B2 (en) | 2007-03-30 | 2007-03-30 | Optical unit and image display device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2008250024A JP2008250024A (en) | 2008-10-16 |
| JP2008250024A5 true JP2008250024A5 (en) | 2009-07-23 |
| JP5302512B2 JP5302512B2 (en) | 2013-10-02 |
Family
ID=39975037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007091686A Expired - Fee Related JP5302512B2 (en) | 2007-03-30 | 2007-03-30 | Optical unit and image display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5302512B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8366281B2 (en) * | 2009-05-21 | 2013-02-05 | Eastman Kodak Company | Out-of-plane motion of speckle reduction element |
| US8172403B2 (en) * | 2009-05-21 | 2012-05-08 | Eastman Kodak Company | Projection with curved speckle reduction element surface |
| JP2011059265A (en) * | 2009-09-08 | 2011-03-24 | Sharp Corp | Projection apparatus |
| US8960923B2 (en) | 2009-09-16 | 2015-02-24 | Nec Display Solutions, Ltd. | Projection type display device and method including vibration of component of illumination optical system |
| JP5796578B2 (en) * | 2010-09-08 | 2015-10-21 | 大日本印刷株式会社 | Projection device and projection-type image display device |
| JP5849564B2 (en) * | 2011-09-26 | 2016-01-27 | ソニー株式会社 | Illumination device and display device |
| JP6332485B2 (en) * | 2017-01-25 | 2018-05-30 | セイコーエプソン株式会社 | projector |
| CN115373206A (en) * | 2021-05-21 | 2022-11-22 | 中强光电股份有限公司 | Illumination system and projection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6594090B2 (en) * | 2001-08-27 | 2003-07-15 | Eastman Kodak Company | Laser projection display system |
| JP2003262920A (en) * | 2002-03-07 | 2003-09-19 | Seiko Epson Corp | Back projection display device |
| JP4007867B2 (en) * | 2002-06-25 | 2007-11-14 | オリンパス株式会社 | Electronic imaging device |
| WO2006090681A1 (en) * | 2005-02-25 | 2006-08-31 | Matsushita Electric Industrial Co., Ltd. | Two dimensional image forming device |
| JP2008134269A (en) * | 2005-03-11 | 2008-06-12 | Matsushita Electric Ind Co Ltd | Image projector |
| JP4612043B2 (en) * | 2005-03-16 | 2011-01-12 | パナソニック株式会社 | Image projection device |
-
2007
- 2007-03-30 JP JP2007091686A patent/JP5302512B2/en not_active Expired - Fee Related
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