JP2012145804A5 - - Google Patents
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- JP2012145804A5 JP2012145804A5 JP2011004730A JP2011004730A JP2012145804A5 JP 2012145804 A5 JP2012145804 A5 JP 2012145804A5 JP 2011004730 A JP2011004730 A JP 2011004730A JP 2011004730 A JP2011004730 A JP 2011004730A JP 2012145804 A5 JP2012145804 A5 JP 2012145804A5
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- diffusion element
- light
- projector according
- diffusion
- emitted
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- 238000009792 diffusion process Methods 0.000 claims description 27
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims 1
Description
上記の課題を解決するため、本発明のプロジェクターは、レーザー光を射出する光源と、前記レーザー光の光路上に設けられた拡散素子と、前記拡散素子から射出された拡散光を変調する光変調素子と、を備え、前記拡散光の強度分布は、前記拡散光の中心軸にまたがって連続的な分布であり、且つ、前記拡散光の中心軸にまたがって平坦部を有する分布であることを特徴とする。
上記の課題を解決するため、本発明のプロジェクターは、レーザー光を射出する光源と、前記光源から射出された前記レーザー光を拡散して第１拡散光として射出する第１拡散素子と、前記第１拡散素子から射出された第１拡散光を拡散して第２拡散光として射出する第２拡散素子と、前記第２拡散素子から射出された第２拡散光を変調する光変調素子と、を備え、前記第２拡散素子から射出される第２拡散光の拡散強度分布は、当該第２拡散光の中心軸にまたがって連続的な分布であり、且つ、当該第２拡散光の中心軸にまたがって平坦部を有する分布であることを特徴とする。
In order to solve the above problems, a projector according to the present invention includes a light source that emits laser light, a diffusion element provided on an optical path of the laser light, and light modulation that modulates the diffused light emitted from the diffusion element. The intensity distribution of the diffused light is a continuous distribution across the central axis of the diffused light, and a distribution having a flat portion across the central axis of the diffused light. Features.
In order to solve the above problems, a projector of the present invention includes a light source that emits laser light, a first diffusion element that diffuses the laser light emitted from the light source and emits the first diffused light, and the first diffusion element. A second diffusing element that diffuses the first diffused light emitted from the first diffusing element and emits the second diffused light; and a light modulation element that modulates the second diffused light emitted from the second diffusing element. The diffusion intensity distribution of the second diffused light emitted from the second diffusion element is a continuous distribution across the central axis of the second diffused light, and the central axis of the second diffused light The distribution is characterized by having a flat portion.
Claims (11)
前記レーザー光の光路上に設けられた拡散素子と、
前記拡散素子から射出された拡散光を変調する光変調素子と、を備え、
前記拡散光の強度分布は、前記拡散光の中心軸にまたがって連続的な分布であり、且つ、前記拡散光の中心軸にまたがって平坦部を有する分布であることを特徴とするプロジェクター。 A light source that emits laser light;
A diffusion element provided on the optical path of the laser beam;
A light modulation element for modulating the diffused light emitted from the diffusion element ,
The projector is characterized in that the intensity distribution of the diffused light is a continuous distribution across the central axis of the diffused light and a distribution having a flat portion across the central axis of the diffused light .
前記レーザー光が前記第１拡散素子へ入射し、 The laser beam is incident on the first diffusion element;
前記第１拡散素子から射出された光が前記第２拡散素子へ入射することを特徴とする請求項１に記載のプロジェクター。 The projector according to claim 1, wherein light emitted from the first diffusion element is incident on the second diffusion element.
前記平行化レンズは、前記第１拡散素子から射出された前記光を平行な光線束として前記第２拡散素子に向けて射出することを特徴とする請求項２に記載のプロジェクター。 A collimating lens provided in an optical path between the first diffusion element and the second diffusion element;
The collimating lens, projector according to claim 2, characterized in that the emitted toward the second diffusion element of the light emitted from said first diffusion element as parallel light beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011004730A JP2012145804A (en) | 2011-01-13 | 2011-01-13 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011004730A JP2012145804A (en) | 2011-01-13 | 2011-01-13 | Projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2012145804A JP2012145804A (en) | 2012-08-02 |
| JP2012145804A5 true JP2012145804A5 (en) | 2014-02-13 |
Family
ID=46789410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011004730A Withdrawn JP2012145804A (en) | 2011-01-13 | 2011-01-13 | Projector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2012145804A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6136258B2 (en) * | 2012-12-28 | 2017-05-31 | 旭硝子株式会社 | Projection device |
| WO2014104106A1 (en) | 2012-12-28 | 2014-07-03 | 旭硝子株式会社 | Optical element, projection device, and manufacturing method for optical element |
| JP6127714B2 (en) | 2013-05-23 | 2017-05-17 | セイコーエプソン株式会社 | Laser projector |
| JP2015141393A (en) * | 2014-01-30 | 2015-08-03 | 大日本印刷株式会社 | Illumination device and projection device |
| TWI592609B (en) * | 2015-12-30 | 2017-07-21 | 中強光電股份有限公司 | Illumination system and projection apparatus |
| US10914876B2 (en) | 2017-08-23 | 2021-02-09 | Panasonic Intellectual Property Management Co., Ltd. | Light source device and projection display apparatus |
| JP2022076489A (en) * | 2019-03-26 | 2022-05-20 | 昭和電工マテリアルズ株式会社 | Speckle noise reduction optical system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6594090B2 (en) * | 2001-08-27 | 2003-07-15 | Eastman Kodak Company | Laser projection display system |
| JP2008134269A (en) * | 2005-03-11 | 2008-06-12 | Matsushita Electric Ind Co Ltd | Image projector |
| JP5167789B2 (en) * | 2006-12-01 | 2013-03-21 | セイコーエプソン株式会社 | LIGHT SOURCE DEVICE, IMAGE DISPLAY DEVICE, PROJECTOR, LIGHTING DEVICE, AND MONITOR DEVICE |
| JP4475302B2 (en) * | 2007-08-07 | 2010-06-09 | セイコーエプソン株式会社 | Projector and projection device |
| JP4235769B1 (en) * | 2008-03-28 | 2009-03-11 | Ｎｅｃディスプレイソリューションズ株式会社 | Projection-type image display device |
| JP5417897B2 (en) * | 2009-02-27 | 2014-02-19 | 大日本印刷株式会社 | Projection-type image display device and image display method |
| JP2010231184A (en) * | 2009-03-02 | 2010-10-14 | Mitsubishi Electric Corp | Projection display apparatus |
-
2011
- 2011-01-13 JP JP2011004730A patent/JP2012145804A/en not_active Withdrawn
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