JP2008288616A5 - - Google Patents
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- JP2008288616A5 JP2008288616A5 JP2008210388A JP2008210388A JP2008288616A5 JP 2008288616 A5 JP2008288616 A5 JP 2008288616A5 JP 2008210388 A JP2008210388 A JP 2008210388A JP 2008210388 A JP2008210388 A JP 2008210388A JP 2008288616 A5 JP2008288616 A5 JP 2008288616A5
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- source device
- light source
- light
- light emitting
- laser
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- 230000003287 optical effect Effects 0.000 claims 12
- 230000010287 polarization Effects 0.000 claims 9
- 238000006243 chemical reaction Methods 0.000 claims 5
- 239000012788 optical film Substances 0.000 claims 4
- 125000006850 spacer group Chemical group 0.000 claims 3
- 238000002834 transmittance Methods 0.000 claims 3
- 239000010408 film Substances 0.000 claims 1
- 230000010355 oscillation Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
Claims (12)
特定波長の光を選択的に前記発光素子に戻すことによって、前記発光素子を特定波長でレーザ発振させる外部共振器と、
前記発光部及び前記外部共振器が固定されたベースプレートと、
前記発光素子と前記外部共振器との間で、且つ、前記発光素子表面より離れた前記レーザ光の光路上に配置固定され、前記レーザ光の進行方向を変える光学素子であって、該光学素子に入射した前記レーザ光の進行方向を略９０度変える光学素子と、
前記ベースプレートに配置固定され、前記光学素子と前記外部共振器との間の前記レーザ光の光路上で、前記光学素子を通過した前記レーザ光の波長を変換する波長変換素子と、
を含み、
前記光学素子の前記レーザ光の光路中に、前記発光素子から入射する前記レーザ光に対する前記波長変換素子に射出する前記レーザ光の比率を示す反射率又は透過率が、前記レーザ光の偏光方向が異なる２つの偏光成分において異なる特性を有する偏光選択光学膜が付与されていることを特徴とする光源装置。 A light emitting unit having at least one light emitting element that emits laser light perpendicular to the light emitting surface during laser oscillation;
An external resonator that causes the light emitting element to oscillate at a specific wavelength by selectively returning light of a specific wavelength to the light emitting element;
A base plate to which the light emitting unit and the external resonator are fixed;
An optical element that is arranged and fixed between the light emitting element and the external resonator and on the optical path of the laser light that is separated from the surface of the light emitting element, and changes the traveling direction of the laser light , the optical element An optical element that changes the traveling direction of the laser light incident on the substrate by approximately 90 degrees;
A wavelength conversion element that is disposed and fixed to the base plate and converts a wavelength of the laser light that has passed through the optical element on an optical path of the laser light between the optical element and the external resonator;
Only including,
In the optical path of the laser light of the optical element, the reflectance or transmittance indicating the ratio of the laser light emitted to the wavelength conversion element with respect to the laser light incident from the light emitting element is the polarization direction of the laser light. A light source device , characterized in that a polarization selective optical film having different characteristics in two different polarization components is provided .
前記偏光選択光学膜の前記反射率又は透過率が高い偏光方向は、前記波長変換素子の分極方向と略一致することを特徴とする光源装置。 The light source device according to claim 1 ,
The light source device characterized in that the polarization direction of the polarization selective optical film having a high reflectance or transmittance substantially coincides with the polarization direction of the wavelength conversion element.
前記偏光選択光学膜が有する前記反射率又は透過率での前記異なる２つの偏光成分における異なる特性は、前記発光部から射出されるレーザ光の波長のほうが、前記波長変換素子によって変換された光の波長よりも、異なり方が大きいことを特徴とする光源装置。 The light source device according to claim 1 or 2,
The different characteristics of the two different polarization components in the reflectance or transmittance of the polarization selective optical film are that the wavelength of the laser light emitted from the light emitting unit is that of the light converted by the wavelength conversion element. A light source device characterized in that the difference is larger than the wavelength.
前記光学素子は、少なくともレーザ光の波長の光を反射する反射面を備えたミラーであることを特徴とする光源装置。 In the light source device as described in any one of Claims 1-3 ,
The light source device according to claim 1, wherein the optical element is a mirror having a reflection surface that reflects at least light having a wavelength of laser light.
前記光学素子は、プリズムであることを特徴とする光源装置。 In the light source device according to any one of claims 1 to 4 ,
The light source device, wherein the optical element is a prism.
前記プリズムは、直角二等辺三角形断面の直角プリズムであり、
前記直角二等辺三角形断面の長辺を含む前記直角プリズムの面は、残りの辺を含む前記直角プリズムの面に対し略垂直に入射したレーザ光を反射する反射面であり、
残りの辺のうち一辺を含む前記直角プリズムの面の一部は、スペーサー部を介して、前記ベースプレートに配置固定されたことを特徴とする光源装置。 The light source device according to claim 5,
The prism is a right angle prism having a right isosceles triangle cross section,
The surface of the right-angle prism including the long sides of the right-angled isosceles triangle section is a reflection surface that reflects laser light incident substantially perpendicular to the surface of the right-angle prism including the remaining sides,
A part of the surface of the right-angle prism including one side among the remaining sides is arranged and fixed to the base plate through a spacer portion.
前記プリズムの前記スペーサー部配置面には、前記発光素子から射出或いは反射される前記レーザ光が前記プリズムへ入射する際、前記レーザ光の反射を低減させる反射防止膜が付与されていることを特徴とする光源装置。 The light source device according to claim 6 ,
The spacer portion disposition surface of the prism is provided with an antireflection film that reduces reflection of the laser beam when the laser beam emitted or reflected from the light emitting element enters the prism. A light source device.
前記偏光選択光学膜は、前記プリズムの前記反射面及び前記スペーサー部配置面以外の残りの一辺を含む前記直角プリズムの面に付与された場合、前記波長変換素子によって変換された波長のレーザ光が前記外部共振器側から入射した際に、前記外部共振器側に反射する波長分離機能が更に含まれていることを特徴とする光源装置。 The light source device according to claim 6 or 7 ,
When the polarization selective optical film is applied to the surface of the right-angle prism including the other side other than the reflection surface and the spacer portion arrangement surface of the prism, the laser beam having the wavelength converted by the wavelength conversion element is emitted. A light source device further comprising a wavelength separation function of reflecting to the external resonator side when incident from the external resonator side.
前記発光部の前記発光素子に対する前記光学素子及び前記外部共振器の位置を決める位置決め部を更に含むことを特徴とする光源装置。 In the light source device as described in any one of Claims 1-3 ,
The light source device further comprising a positioning unit that determines a position of the optical element and the external resonator with respect to the light emitting element of the light emitting unit.
前記位置決め部は、ピンであることを特徴とする光源装置。 The light source device according to claim 9 ,
The light source device, wherein the positioning portion is a pin.
前記光源装置から射出された光を画像信号に応じて変調する光変調装置と、
前記光変調装置により形成された画像を投射する投射装置と、
を含むことを特徴とする画像表示装置。 The light source device according to any one of claims 1 to 10 ,
A light modulation device that modulates light emitted from the light source device according to an image signal;
A projection device for projecting an image formed by the light modulation device;
An image display device comprising:
前記光源装置から射出されたレーザ光を被投射面上で走査する走査部と、
を含むことを特徴とする画像表示装置。 The light source device according to any one of claims 1 to 10 ,
A scanning unit that scans laser light emitted from the light source device on a projection surface;
An image display device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008210388A JP2008288616A (en) | 2006-10-19 | 2008-08-19 | Light source device and image display device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006284815 | 2006-10-19 | ||
| JP2008210388A JP2008288616A (en) | 2006-10-19 | 2008-08-19 | Light source device and image display device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007175878A Division JP2008124428A (en) | 2006-10-19 | 2007-07-04 | Light source device and image display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2008288616A JP2008288616A (en) | 2008-11-27 |
| JP2008288616A5 true JP2008288616A5 (en) | 2010-07-29 |
Family
ID=39334319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008210388A Withdrawn JP2008288616A (en) | 2006-10-19 | 2008-08-19 | Light source device and image display device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008288616A (en) |
| CN (1) | CN101165584B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0823688D0 (en) * | 2008-12-31 | 2009-02-04 | Tyco Electronics Raychem Nv | Unidirectional absolute optical attenuation measurement with OTDR |
| JP6663629B2 (en) * | 2013-12-20 | 2020-03-13 | カシオ計算機株式会社 | Projection device |
| US10432898B2 (en) | 2013-12-20 | 2019-10-01 | Casio Computer Co., Ltd. | Projector having light source including laser diodes |
| JP2017059661A (en) | 2015-09-16 | 2017-03-23 | ウシオ電機株式会社 | External resonator laser device |
| JP6958530B2 (en) * | 2018-10-10 | 2021-11-02 | セイコーエプソン株式会社 | Optical module and head-mounted display |
| CN113917769B (en) * | 2021-06-23 | 2023-06-20 | 深圳市安华光电技术股份有限公司 | Projection ray apparatus and projection equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3975693A (en) * | 1975-03-10 | 1976-08-17 | The United States Of America As Represented By The Secretary Of The Air Force | Dual function laser for space laser communications |
| US5297156A (en) * | 1990-12-20 | 1994-03-22 | Deacon Research | Method and apparatus for dual resonant laser upconversion |
| US5185752A (en) * | 1992-02-18 | 1993-02-09 | Spectra Diode Laboratories, Inc. | Coupling arrangements for frequency-doubled diode lasers |
| KR0174775B1 (en) * | 1994-03-28 | 1999-04-01 | 스기야마 가즈히꼬 | Lasing system with wavelength=conversion waveguide |
| CN1773360A (en) * | 2004-11-12 | 2006-05-17 | 南京Lg同创彩色显示系统有限责任公司 | Optical pumping semiconductor laser system |
-
2007
- 2007-10-17 CN CN2007101819231A patent/CN101165584B/en active Active
-
2008
- 2008-08-19 JP JP2008210388A patent/JP2008288616A/en not_active Withdrawn
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