WO2015045133A1 - プロジェクタユニット - Google Patents
プロジェクタユニット Download PDFInfo
- Publication number
- WO2015045133A1 WO2015045133A1 PCT/JP2013/076443 JP2013076443W WO2015045133A1 WO 2015045133 A1 WO2015045133 A1 WO 2015045133A1 JP 2013076443 W JP2013076443 W JP 2013076443W WO 2015045133 A1 WO2015045133 A1 WO 2015045133A1
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- WIPO (PCT)
- Prior art keywords
- unit
- light
- light source
- substrate
- optical system
- Prior art date
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
Definitions
- the present invention relates to a projector unit suitable for mounting on an electronic device.
- Patent Document 1 and Patent Document 2 shown below as prior arts that deal with the heat generation of this light source.
- the projector device mounted on an electronic device disclosed in Patent Document 1 since the liquid crystal panel is disposed between the light source and the optical system, the thickness of the device increases in the optical axis direction of the light source, and the thinning of the device is hindered. There is an inconvenience.
- the projector device disclosed in Patent Document 1 adopts a configuration in which the optical image forming block and the optical block are integrated by a fixing member, and the aluminum substrate on which the light source is mounted is brought into surface contact with the metal fixing member. Therefore, the heat of the light source can be transmitted to the substrate and the fixing member to be radiated.
- the amount of heat released from the substrate to the fixing member is limited by the contact area between the substrate and the fixing member. Therefore, as the size of the fixing member decreases with the miniaturization of the projector device, the amount of heat released from the fixing member decreases. May decrease. Moreover, since this projector apparatus is mounted in an electronic device, there is a possibility that heat radiation from the fixing member may be slowed down depending on the temperature in the casing of the electronic device.
- the present invention improves the disadvantages of the conventional example, and in particular, provides a projector unit that can reduce the thickness of the projector unit in the optical axis direction of the light source and radiate the heat of the light source more efficiently than in the past.
- the present invention adopts the following configuration. That is, Among the width, depth, and height of the unit, the shortest dimension is the height, A substrate having a light source having an optical axis in the height direction and disposed on the bottom surface of the unit; A mirror that is provided directly above the light source and that bends the optical axis of the light source in a plane in the width and depth direction of the unit; A reflective image element that receives the light after bending by the mirror to form image light, and reflects the image light in a plane in the width and depth directions of the unit; A projection optical system disposed on the optical path of the image light reflected by the reflective image element, The mirror, the reflective image element and the projection optical system are provided in the casing of the unit, When the bottom surface of the substrate is exposed from the housing, the substrate is formed of a material having a thermal conductivity of 150 W / (m ⁇ K) or more, and the unit is provided in the housing of the electronic device, the substrate The exposed surface of the contact with the heat radiat
- the thickness of the unit in the optical axis direction of the light source can be directly transmitted from the board surface to the heat dissipation member on the inner surface of the electronic device casing using the relatively wide board area in the width and depth direction of the unit. More efficient heat dissipation can be realized.
- the thickness of the projector unit can be reduced in the optical axis direction of the light source, and the heat of the light source can be radiated more efficiently than before.
- the projector unit of the present embodiment is a thin unit as shown in the front view of FIG. 1B, and is intended to be installed in a thin portable electronic device, for example, a case of a smartphone or a tablet terminal. Designed.
- the unit housing when viewed from the top, it has a T-shaped appearance.
- the width W, depth D, and height H of the unit are determined as shown in the figure.
- the method of determination is that the shortest dimension of the unit is the height H.
- the width and depth may be either, but as illustrated.
- the plan view of FIG. 1 (a) and the front view of FIG. 1 (b) show the configuration of the optical system mainly in the housing of the unit.
- substrate 2 provided with the light sources 11, 12, and 13 is provided in the longitudinal direction edge part of the planar T-shaped housing
- the light sources 11, 12, and 13 are LED light sources of three primary colors of R, G, and B, respectively, and are fixed to the substrate 2 linearly along the longitudinal direction of the flat T-shaped casing, that is, the width W direction of the unit. ing.
- the optical axes of the light sources 11, 12, and 13 are set in the direction of the height H of the unit, and dichroic mirrors 31, 32, and 33 are arranged directly above the light sources 11, 12, and 13 on the optical axes. Yes.
- the dichroic mirrors 31, 32, and 33 reflect the light emitted from the light sources 11, 12, and 13 in the width W direction of the unit, and transmit the light incident from the opposite side to the reflection direction.
- the light reflected by the dichroic mirrors 31, 32, and 33 in the width W direction of the unit enters the first correction optical system 4.
- the first correction optical system 4 includes a correction lens or an offset prism, and shifts the position of the optical axis without changing the direction of light incident on the first correction optical system 4. Thereby, it correct
- the light that has passed through the first correction optical system 4 is incident on the mirror 5A on the extension line of the optical path.
- the mirror 5A reflects the light that has passed through the first correction optical system 4 in the direction in which the second correction optical system 5B is disposed.
- the second correction optical system 5B is disposed on one arm of a flat T-shaped casing. The direction of the T-shaped arm is along the direction of the depth D of the unit.
- the second correction optical system 5 ⁇ / b> B corrects the angle of the optical axis so that the optical axis of the light reflected by the mirror 5 ⁇ / b> A becomes an optical axis suitable for incidence on the reflective image element 5.
- the reflective image element 5 is disposed at the end of the same arm as the T-shaped arm on which the second correction optical system 5B is disposed.
- a DLP-type DMD or an LCOS-type liquid crystal mounting chip is employed as the reflective image element 5.
- DLP Digital Light Processing (registered trademark)
- LCOS Liquid Crystal On On Silicon (trademark)
- image light is formed from incident light by liquid crystal display control.
- the reflective image element 5 emits image light in the direction of the arm on the opposite side of the T-shaped casing (the direction of depth D). The image light emitted from the reflective image element 5 is incident on the second correction optical system 5B again.
- the second correction optical system 5B corrects the image light emitted from the reflective image element 5 to a spot diameter suitable for entering the projection optical system 6 disposed on the extension of the optical axis.
- the projection optical system 6 is disposed on the arm opposite to the arm on which the reflective image element 5 of the T-shaped casing is disposed.
- the projection optical system 6 irradiates the image light whose focus is adjusted according to the operation of the focus knob 6A from the end of the arm of the T-shaped casing, and projects the image light onto an external screen.
- the light emitted from the three light sources 11, 12, 13 in the direction of the height H of the unit is respectively the dichroic mirror 31 directly above. , 32 and 33 are reflected in the direction of the width W of the unit and enter the first correction optical system 4.
- the light whose optical axis is offset in the first correction optical system 4 passes through the mirror 5A and the second correction optical system 5B, enters the reflective image element 5, and is converted into video light.
- the image light emitted from the reflective image element 5 passes through the second correction optical system 5B and enters the projection optical system 6.
- the image light incident on the projection optical system 6 is adjusted in focus by an optical system having a focus knob 6A and projected onto an external screen.
- Image light is generated individually for each of R, G, and B colors.
- the DMD or the like is controlled in the reflective image element 5 so as to generate R image light.
- G image light is generated when the G light source is on
- B image light is generated when the B light source is on.
- the entire bottom surface of the substrate 2 is exposed from the housing of the projector unit.
- the bottom surface of the substrate 2 serves as a heat dissipation member on the inner surface of the electronic device housing. It is intended to abut.
- the substrate 2 is formed of a material having high thermal conductivity, and is formed of a material having a thermal conductivity of at least 150 W / (m ⁇ K) or more. As such a material, there is a carbon-based metal composite material, and a substrate having a high thermal conductivity formed of the same material is also disclosed in Japanese Patent No. 3673436.
- the projector unit of this embodiment When the projector unit of this embodiment is mounted on an electronic device, the projector unit is preferably fixed to the electronic device so that the entire bottom surface of the substrate 2 is in direct contact with the heat radiating member on the inner surface of the electronic device casing. In this way, the heat generated by the light sources 11, 12 and 13 is transmitted to the housing case of the electronic device using the entire area of the bottom surface of the substrate 2, so that the heat radiation efficiency can be improved as compared with the conventional case. . Further, a liquid crystal panel or the like is not interposed between the light sources 11, 12, 13 and the mirrors 31, 32, 33 provided in the optical axis direction of the light sources, and the mirrors 31, 32, 33 are used in the unit width direction.
- the height H of the unit can be suppressed, and a unit with a small thickness in the optical axis direction of the light source can be realized. It is particularly suitable for mounting on a thin electronic device such as a tablet terminal.
- FIG. 2 is an external perspective view of the above embodiment.
- casing of the projector unit from the bottom side is shown.
- the substrate 2 is exposed on the bottom surface of the housing, and in this embodiment, the bottom surface of the housing and the bottom surface of the substrate 2 are arranged on the same plane.
- a thin projector unit with a reduced thickness can be realized, and the substrate 2 is in contact with a heat radiating member (not shown) on the inner surface of the electronic device casing. Since the contact area can be increased, the heat generated by the light source can be radiated more efficiently than in the past.
- the scope of the present invention is the scope of the invention described in the claims, and is not limited to the above embodiments and examples.
- the number and arrangement of optical elements used by the optical system for correcting light within the plane of the unit width and depth direction are not limited.
- the illustrated width W and depth D may be reversed.
- the planar shape of the housing may not be T-shaped.
Abstract
Description
ユニットの幅、奥行、高さのうち、一番短い寸法を高さとして、
前記高さ方向の光軸を有する光源を備えて前記ユニットの底面に配置される基板と、
前記光源の直上に設けられ当該光源の光軸を前記ユニットの幅及び奥行方向の面内に曲げるミラーと、
このミラーが曲げた後の光を受光して映像光を形成し、当該映像光を前記ユニットの幅及び奥行方向の面内に反射する反射型画像素子と、
この反射型画像素子が反射した前記映像光の光路上に配置された投影光学系とを備え、
前記ミラー、反射型画像素子及び投影光学系を前記ユニットの筐体内に備えると共に、
前記基板の底面を前記筐体から露出させて設け、当該基板は熱伝導率が150W/(m・K)以上の材料で形成し、電子機器の筐体内に前記ユニットを装備したとき、前記基板の露出面が前記電子機器筐体内面の放熱部材に当接するようにした、
プロジェクタユニット。
4 第1の補正光学系
5 反射型画像素子
5A ミラー
5B 第2の補正光学系
6 投影光学系
6A フォーカスノブ
11,12,13 光源
30 ミラーの組立体
31,32,33 ミラー
40 補正光学系の組立体
60 投影光学系の組立体
Claims (1)
- ユニットの幅、奥行、高さのうち、一番短い寸法を高さとして、
前記高さ方向の光軸を有する光源を備えて前記ユニットの底面に配置される基板と、
前記光源の直上に設けられ当該光源の光軸を前記ユニットの幅及び奥行方向の面内に曲げるミラーと、
このミラーが曲げた後の光を受光して映像光を形成し、当該映像光を前記ユニットの幅及び奥行方向の面内に反射する反射型画像素子と、
この反射型画像素子が反射した前記映像光の光路上に配置された投影光学系とを備え、
前記ミラー、反射型画像素子及び投影光学系を前記ユニットの筐体内に備えると共に、
前記基板の底面を前記筐体から露出させて設け、当該基板は熱伝導率が150W/(m・K)以上の材料で形成し、電子機器の筐体内に前記ユニットを装備したとき、前記基板の露出面が前記電子機器筐体内面の放熱部材に当接するようにした、
プロジェクタユニット。
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PCT/JP2013/076443 WO2015045133A1 (ja) | 2013-09-29 | 2013-09-29 | プロジェクタユニット |
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PCT/JP2013/076443 WO2015045133A1 (ja) | 2013-09-29 | 2013-09-29 | プロジェクタユニット |
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WO2015045133A1 true WO2015045133A1 (ja) | 2015-04-02 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110412821A (zh) * | 2019-07-31 | 2019-11-05 | 青岛海信激光显示股份有限公司 | 激光投影设备及照明光学系统 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006253197A (ja) * | 2005-03-08 | 2006-09-21 | Nikon Corp | 光照射モジュール |
JP2007271922A (ja) * | 2006-03-31 | 2007-10-18 | Nikon Corp | 投影装置および電子機器 |
JP2010282116A (ja) * | 2009-06-08 | 2010-12-16 | Mitsubishi Electric Corp | 映像表示装置 |
JP2012037792A (ja) * | 2010-08-10 | 2012-02-23 | Nikon Corp | プロジェクタモジュール及び電子機器 |
-
2013
- 2013-09-29 WO PCT/JP2013/076443 patent/WO2015045133A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006253197A (ja) * | 2005-03-08 | 2006-09-21 | Nikon Corp | 光照射モジュール |
JP2007271922A (ja) * | 2006-03-31 | 2007-10-18 | Nikon Corp | 投影装置および電子機器 |
JP2010282116A (ja) * | 2009-06-08 | 2010-12-16 | Mitsubishi Electric Corp | 映像表示装置 |
JP2012037792A (ja) * | 2010-08-10 | 2012-02-23 | Nikon Corp | プロジェクタモジュール及び電子機器 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110412821A (zh) * | 2019-07-31 | 2019-11-05 | 青岛海信激光显示股份有限公司 | 激光投影设备及照明光学系统 |
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