WO2016066022A1 - 发光装置及具有其的投影仪 - Google Patents
发光装置及具有其的投影仪 Download PDFInfo
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- WO2016066022A1 WO2016066022A1 PCT/CN2015/091973 CN2015091973W WO2016066022A1 WO 2016066022 A1 WO2016066022 A1 WO 2016066022A1 CN 2015091973 W CN2015091973 W CN 2015091973W WO 2016066022 A1 WO2016066022 A1 WO 2016066022A1
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- WIPO (PCT)
- Prior art keywords
- light
- light source
- array
- source array
- spot
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Classifications
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- 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
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- 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
- G03B21/28—Reflectors in projection beam
Definitions
- the present invention relates to the field of projection devices, and in particular to a light emitting device and a projector having the same.
- a common laser projection device uses a configuration of a combining module and a beam splitting module to generate a subsequent projection imaging.
- a plurality of imaging color lights are required, which comprise a light combining module, a light guiding module and a beam splitting module, wherein the light combining module comprises a plurality of mirrors and two light sources.
- the existing laser illuminating structure has a relatively large volume, which is not conducive to the subsequent optical path processing and the layout of the whole machine, and the existing combined light combining structure has uneven brightness and poor effect.
- the present invention aims to provide a light-emitting device and a projector having the same, which solves the problem of poor light combining effect of the light combining structure in the prior art.
- the present invention aims to provide a light-emitting device and a projector having the same, which solves the problem of poor light combining effect of the light combining structure in the prior art.
- a light emitting device includes: a first light source array; a second light source array, a second light source array disposed parallel to the first light source array; and a light combining unit,
- the light combining unit is disposed between the first light source array and the second light source array, the light combining unit includes a first light combining member and a second light combining member, and the first light combining member has a reflective portion and a light transmitting portion disposed between the first light combining unit,
- the light emitted by the array of light sources is reflected by the reflective portion and exits in the first direction to form an array of first spots.
- the light emitted by the second array of light sources is turned by the second light combining member and then exits in the first direction to form a second spot.
- the array, at least one column of the second spot array is located between adjacent rows of the first spot array.
- the second light combining member is located at a side of the space between the first light source array and the second light source array, and is perpendicular to the first light source array and the second light source array, and the light emitted by the second light source array is reflected by the reflective portion And exiting in a second direction opposite to the first direction and incident on the second light combining member, the second light combining member deflecting light emitted by the second light source array, and passing the light emitted by the second light source array through the first light combining member
- the light transmitting portion is emitted in the first direction.
- first direction is parallel to the extending direction of the plane in which the first light source array is located.
- the first light source array includes at least one first light source group forming a row of first light spot columns by the light combining unit, the first light source group includes at least one first light source, and the second light source array includes at least one column formed by the light combining unit a second light source group of the second light spot array, the second light source group includes at least one second light source, each of the first light sources is disposed in one-to-one correspondence with each of the second light sources, and the first light combining member gradually approaches the second direction along the first direction The direction of the light source array is tilted.
- the number of the first light combining members is consistent with the number of the first light sources of the first light source group, and the first light combining member is disposed corresponding to the first light source of the first light source group.
- the first light combining member includes a transparent substrate and a plating layer fixedly disposed on one surface of the transparent substrate, and the plating layer divides the transparent substrate into a plurality of reflective portions and a light transmitting portion disposed between the phases.
- the second light combining member includes a first reflecting surface and a second reflecting surface perpendicular to each other, and the first reflecting surface and the second reflecting surface form an opening, and the opening faces the first direction.
- the first light source array includes at least one first light source group forming a row of first light spot columns by the light combining unit, each of the first light source groups includes at least one first light source, and the second light source array includes at least one formed by the light combining unit.
- each of the second light source groups comprising at least one second light source, the first light source having a first partial shift between the projection in the third direction and the projection of the corresponding second light source in the third direction Moving the distance, the third direction is perpendicular to the first direction, and the projection of the first light source in the first direction has a second offset distance from the projection of the corresponding second light source in the first direction, and is in the same line along the third direction
- the first light source constitutes a first light source column
- the second light source on the same straight line in the third direction constitutes a second light source column.
- the light combining unit includes: a first light combining member, the first light combining member is disposed in one-to-one correspondence with each of the first light source columns, and the first light combining member has a light reflecting portion and a light transmitting portion, and the light emitted by the first light source Reflecting through the reflective portion of the first light combining member and emitting in the first direction to form a first spot array; the second light combining member, the second light combining member is disposed in one-to-one correspondence with each of the second light source columns, the second light source The emitted light passes through the second light combining member and exits in the first direction, and passes through the light transmitting portion of the first light combining member to form a second spot array.
- the second light combining component is a polarization beam splitting film;
- the light emitting device further includes a third light source array, the third light source array is disposed on one side of the first light source array, and the third light source array is located perpendicular to the first light source array a plane, the polarization state of the light emitted by the third light source array is different from the polarization state of the light emitted by the first light source array and the second light source, and the light emitted by at least a portion of the third light source of the third light source array passes through the second light combining member A light spot that coincides with a portion of the first spot array and the second spot array is formed by the light transmitting portion of the first light combining member and exiting in the first direction.
- the second light combining member is a polarization beam splitting film;
- the light emitting device further includes a third light source array, a fourth light source array, and an adjustment structure disposed between the third light source array and the fourth light source array, the third light source array and the The light emitted by the four light source arrays has the same polarization state and is different from the polarization states of the light emitted by the first light source array and the second light source array, and the light emitted by the third light source array and the fourth light source array passes through the adjustment structure and along the first direction Exiting, forming a spot that coincides with a portion of the first spot array and the second spot array.
- the plane of the third light source array is parallel to the plane of the fourth light source array and parallel to the first direction
- the third light source array includes at least one third light source array
- the fourth light source array includes at least one fourth light source column, a third offset distance between each of the third light sources of the three light source arrays and the fourth light source of the corresponding fourth light source array
- the adjustment structure includes a first mirror and a second mirror, the first mirror and The third light source columns are arranged one by one correspondingly, and the light emitted by the third light source is emitted in the first direction, the second mirror is arranged in one-to-one correspondence with the fourth light source column, and the light emitted by the fourth light source is along the first Directions.
- a projector comprising a light emitting device, the light emitting device being the light emitting device described above.
- the light emitting device comprises a first light source array, a second light source array and a light combining unit.
- the first source array and the second source array emit laser light as a light source.
- the second array of light sources is disposed parallel to the first array of light sources.
- the light combining unit is disposed between the first light source array and the second light source array, the light combining unit includes a first light combining member and a second light combining member, and the first light combining member has a reflective portion and a light transmitting portion disposed between the first light combining unit, The light emitted by the array of light sources is reflected by the reflective portion and exits in the first direction to form an array of first spots.
- the light emitted by the second array of light sources is turned by the second light combining member and then exits in the first direction to form a second spot.
- the array, at least one column of the second spot array is located between adjacent rows of the first spot array. Inserting at least a portion of the second spot array between the first array of spots by the illumination device 29, thereby making the combined light more uniform and the light combining effect is better.
- Figure 1 is a front elevational view showing a light-emitting device of a first embodiment of the present invention
- Figure 2 is a plan view showing a light-emitting device of a first embodiment of the present invention
- FIG. 3 is a perspective structural view showing a first light combining member of a light emitting device according to an embodiment of the present invention
- Figure 4 is a schematic view showing a first spot array of the first embodiment of the present invention.
- Figure 5 is a schematic view showing a second spot array of the first embodiment of the present invention.
- FIG. 6 is a schematic view showing a combination of a first spot array and a second spot array of the first embodiment of the present invention
- Figure 7 is a front elevational view showing a light-emitting device of a second embodiment of the present invention.
- Figure 8 is a plan view showing a light-emitting device of a second embodiment of the present invention.
- Figure 9 is a front elevational view showing a light-emitting device of the present invention having a plurality of polarization states
- Figure 10 is a plan view showing a light-emitting device of the present invention having a plurality of polarization states
- Figure 11 is a schematic view showing a spot array of a light-emitting device having a plurality of polarization states of the present invention
- Figure 12 is a front elevational view showing another light-emitting device of the present invention having a plurality of polarization states
- Figure 13 is a perspective view showing the structure of the light-emitting device of Figure 12;
- Figure 14 is a plan view showing another light-emitting device of the present invention having a plurality of polarization states.
- a light emitting device includes a first light source array 10 and a second light source array 20 and unit.
- the first light source array 10 and the second light source array 20 emit laser light as a light source.
- the second source array 20 is disposed parallel to the first source array 10.
- the light combining unit is disposed in the first light source array 10 and the second light source array 20, the light combining unit includes a first light combining member 30 and a second light combining member 40, and the first light combining member 30 has a reflective portion 31 and a light transmitting portion 32 disposed therebetween.
- the light emitted by the first light source array 10 is reflected by the reflective portion 31 and exits in the first direction to form a first spot array 19, and the light emitted by the second light source array 20 passes through the second light combining member 40.
- the first direction is emitted, and a second spot array 29 is formed, and at least one column of the second spot array 29 is located in the first spot array 19 Between adjacent two columns of light spots. At least a portion of the second spot array 29 can be inserted between the first spot arrays 19 by the light-emitting device, thereby making the combined light more uniform and the light combining effect better.
- the first direction in this embodiment is parallel to the plane of the first light source array 10 and extends to the right, that is, FIG.
- the direction indicated by the middle arrow is not limited thereto, and the first direction may be specifically determined according to the light-emitting requirement and the specific setting structure.
- the direction opposite to the first direction is the second direction, and the first direction Any one of two directions perpendicular to one direction may be determined as the third direction, and the third direction may also be determined according to specific needs.
- the first light source array 10 forms a first light source group along a first light source on a same straight line parallel to the first direction.
- the first light source on the same straight line in the first direction perpendicular to the first direction constitutes the first light source column.
- the light emitted by the first light source group 11 passes through the light combining unit to form a column of the first light spot array.
- Each first light source group 11 At least one first light source is included.
- the second light sources in the second light source array 20 are arranged in an array to form an array, and the second light source array 20
- the second light source group 21 on the same straight line parallel to the first direction constitutes the second light source group 21, and the second light source line on the same straight line in the vertical first direction constitutes the second light source column.
- Second light source group 21 The emitted light passes through the light combining unit to form a column of second light spots.
- Second light source group 21 At least one second light source is included.
- Each of the first light sources has a second light source corresponding thereto, and in the present embodiment, the optical axes of the two are on the same straight line.
- the first light combining member 30 is disposed between the first light source array 10 and the second light source array 20, and the first light combining member 30
- the light reflecting portion 31 and the light transmitting portion 32 having the interphase arrangement, the light emitted from the first light source array 10 is reflected by the light reflecting portion 31, and is emitted in the first direction to form the first light spot array 19.
- the second light combining member 40 is located at the first light source array 10 and the second light source array 20 One side of the space between the first light source array 10 and the second light source array 20, and the light emitted by the second light source array 20 passes through the light reflecting portion 31.
- the reflection is emitted in a second direction opposite to the first direction and incident on the second light combining member 40, and the second light combining member 40 deflects and steers the incident light to pass the light emitted by the second light source array 20 through the first combination Light component 30
- the light transmitting portion 32 is emitted in the first direction.
- the first light combining member 30 It consists of a transparent substrate and a plating layer fixedly disposed on one side surface of the transparent substrate.
- the transparent substrate is a glass plate
- the coating layer covers one side of the glass plate
- the coating layer is a non-reflective material coating film
- the portion of the glass plate covered by the coating layer forms a reflective portion.
- the portion not covered by the coating layer forms the light transmitting portion 32, and the reflecting portion 31 and the light transmitting portion 32 are disposed to be interposed.
- the phase arrangement ensures that the array of spots formed by the first light source array 10 and the second light source array 20 is also disposed between the phases, so that the light-emitting device has a simple structure, a small occupied space, uniform light combining, and high brightness.
- the transparent substrate can be other transparent materials.
- the first light combining member 30 It can also be realized by other structures.
- the first light combining member 30 is formed by a plurality of reflecting lenses spaced apart, wherein the reflecting lens forms a reflecting portion 31, and the spacing of the two reflecting lenses forms the light transmitting portion 32.
- the first light combining member 30 can also be formed by attaching a reflecting lens to the AR film.
- the first light combining member 30 The direction is gradually inclined toward the second light source array 20 in the first direction so that a column of light spots can be formed.
- the reflective portion 31 can be formed as a complete component, for example, at a position on the entire glass plate corresponding to each of the first light sources.
- the first light combining member 30 is a plurality of separate components.
- First light combining component The number of 30 coincides with the number of first light sources of the first light source group 11, and the first light combining member 30 corresponds to the first light source of the first light source group 11.
- First light combining member 30 The length direction of the first light source column coincides with the direction of the first light source column, and each of the first light sources in the first light source group 11 corresponds to a first light combining member 30.
- the second light combining member 40 includes a first reflecting surface 41 and a second reflecting surface 42 which are perpendicular to each other, and the first reflecting surface 41 An opening is formed with the second reflecting surface 42 with the opening facing the first direction. In this way, it is possible to shift and reverse the optical path of the light emitted by the second light source, so that the light emitted by the second light source passes through the light transmitting portion of the first light combining member 30. 32. Further, at least part of the spot in the second spot array 29 is located between adjacent columns of the first spot array 19, so that the uniformity of the combined light is better.
- the light emitted from the second light source array 20 is transmitted through the transparent substrate and then irradiated on the light reflecting portion 31, and the light reflecting portion 31
- the reflection is emitted in the second direction and is incident on the first reflective surface 41, reflected by the first reflective surface 41 to the second reflective surface 42 via the second reflective surface 42
- the reflection is emitted in the first direction, and an offset occurs between the outgoing light and the incident light, so that the light reflected by the second reflecting surface 42 passes through the light transmitting portion 32 of the first light combining member 30, and forms a second spot array. 29 .
- the second light combining member 40 is an isosceles right angle prism. In other embodiments, the second light combining member 40 It can also be composed of two mutually perpendicular reflecting mirrors or other elements capable of shifting and reversing the optical path.
- the first source and the second source may be mutually offset.
- the first light source array 10 is disposed in a horizontal plane, and the first light source on the same straight line parallel to the first direction constitutes the first light source group 11
- the first light source on the same straight line in the first direction of the vertical direction constitutes a first light source column
- the first light source group 11 includes at least one first light source.
- the second light source array 20 is spaced apart from the first light source array 10 in the vertical direction Provided, and the second light source array 20 is also disposed in a horizontal plane, and the second light source on the same straight line parallel to the first direction constitutes the second light source group 21
- the second light source on the same straight line in the first direction perpendicular to the first direction constitutes a second light source column, and the second light source group 21 At least one second light source is included.
- the first light source is disposed corresponding to the second light source, but the projection of the first light source in the third direction and the projection of the corresponding second light source in the third direction have a first offset distance, and the first light source is in the first direction
- the projection and the projection of the corresponding second light source in the first direction have a second offset distance.
- the first light source on the same straight line in the third direction constitutes the first light source row
- the second light source on the same straight line in the third direction constitutes the second light source column.
- the first light source array thus arranged
- the 10 and second source arrays 20 can be spatially uniform.
- the light combining unit includes the first light combining member 30. And a second light combining member 40.
- the first light combining member 30 is disposed in one-to-one correspondence with each of the first light source columns, and the first light combining member 30 has a reflective portion 31. And the light transmitting portion 32, the light emitted by the first light source is reflected by the light reflecting portion 31 of the first light combining member 30, and is emitted in the first direction to form the first light spot array 19.
- the second light combining member 40 is disposed in one-to-one correspondence with each of the second light source columns, and the light emitted by the second light source passes through the second light combining member 40. And exiting in the first direction, passing through the light transmitting portion 32 of the first light combining member 30, forming a second spot array 29.
- the first light combining member 30 may be the structure of the first light combining member 30 in the first embodiment of the present invention.
- Second light combining component 40 can be a mirror.
- the first light combining member 30 is obliquely disposed in a direction gradually approaching the second light source array 20 in the first direction, and the second light combining member 40 is gradually approached to the first light source array 10 in the first direction.
- the direction of the tilt is set to ensure that the outgoing directions of the light emitted by the first light source and the second light source are uniform.
- the light-emitting device further includes a third light source array 50.
- the third light source array 50 is disposed on one side of the first light source array 10, and the third light source array 50 is located perpendicular to the plane of the first light source array 10, and the third light source array 50
- the polarization of the emitted light is different from the polarization of the light emitted by the first source array 10 and the second source.
- the light emitted by the first light source array 10 and the second light source array 20 is S light
- the third light source array 50 The emitted light is P light, so that the spot formed by the light-emitting device is brighter.
- the second light-combining member 40 is a polarization beam splitting film.
- Third source array 50 The light emitted by at least a portion of the third light source passes through the second light combining member 40, passes through the light transmitting portion 32 of the first light combining member 30, and exits in the first direction to form an array with the first spot array 19 and the second spot array. A spot in which some of the spots in the spot coincide.
- the third source array 50 A portion of the light from the third source exits directly in the first direction and forms a third spot.
- Third source array 50 The light emitted by the other portion of the third light source passes through the polarizing beam splitting film and exits in the first direction to form a spot on which the first spot or the second spot is superimposed.
- Second light source array 20 The light emitted by the second light source passes through the polarizing beam splitting film, is reflected by the polarizing beam splitting film, and exits in the first direction to form a second spot.
- the plane of the third light source array 50 is perpendicular to the first direction.
- the illumination device can include a third source array 50, a fourth source array 60, and a third source array 50.
- the adjustment structure between the fourth light source array 60 and the fourth light source array 60 constitutes a spatially displaced light source structure such that the filling ratio is higher.
- the light emitted by the third light source array 50 and the fourth light source array 60 has the same polarization state and is different from the first light source array 10 .
- the polarization states of the light emitted by the second source array 20 for example, the third source array 50 and the fourth source array 60 emit P light, and the first source array 10 and the second source array 20 emit S Light.
- the third source array 50 and the fourth source array 60 emit S light
- the first source array 10 and the second source array 20 emit P light.
- the light emitted by the third light source array 50 and the fourth light source array 60 passes through the adjustment structure and exits in the first direction to form an array with the first spot 19 and a spot that coincides with a portion of the spot in the second spot array 29.
- the plane of the third light source array 50 is parallel to the plane of the fourth light source array 60 and parallel to the first direction
- the third light source array 50 includes at least one third source array
- the fourth source array 60 includes at least one fourth source column
- the fourth light source has a third offset distance in the first direction.
- the adjustment structure includes a first mirror 71 and a second mirror 72, and the first mirror 71 Arranging in one-to-one correspondence with the third light source column, and causing the light emitted by the third light source to exit in the first direction, the second mirror 72
- the first light source column is disposed in one-to-one correspondence, and the light emitted by the fourth light source is emitted in the first direction. This enables the filling factor to be filled in the first array of spots, resulting in a higher brightness of the spot.
- the light reflecting portion 31 of the first light combining member 30 may also be a polarization beam splitting film, and the first light source array 10 After the light from the first light source passes through the light reflecting portion 31, it exits in the first direction and forms a first spot.
- a projector comprising a light emitting device, and the light emitting device is the light emitting device described above.
- the light-emitting device of the present invention adopts a completely new compression form, and can obtain a small-volume, high-brightness laser light source.
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Abstract
发光装置及投影仪,包括:平行设置的第一光源阵列(10)和第二光源阵列(20);合光单元包括第一合光部件(30)和第二合光部件(40),第一合光部件(30)具有相间设置的反光部分(31)和透光部分(32),第一光源阵列(10)发出的光通过反光部分(31)反射形成第一光斑阵列(19),第二光源阵列(20)发出的光通过第二合光部件(40)转向后出射并形成第二光斑阵列(29),第二光斑阵列(29)的至少一列光斑位于第一光斑阵列(19)的相邻两列光斑之间。该发光装置能够实现良好的合光效果。
Description
本发明涉及投影设备领域,具体而言,涉及一种发光装置及具有其的投影仪。
一般来说,常见的激光投影设备是采用合光模块与分光模块的配置以产生可供后续投影成像
所需的多个成像色光,其采用合光模块、导光模块以及分光模块,其中,合光模块包含多个反射镜、两个光源。现有的激光合光结构体积相对较大,不利于后续的光路处理以及整机的布局,而现有合光结构合成的光斑亮度不均,效果差。
本发明旨在提供一种发光装置及具有其的投影仪,以解决现有技术中的合光结构合光效果差的问题。
本发明旨在提供一种发光装置及具有其的投影仪,以解决现有技术中的合光结构合光效果差的问题。
为了实现上述目的,根据本发明的一个方面,提供了一种发光装置,该发光装置包括:第一光源阵列;第二光源阵列,第二光源阵列平行于第一光源阵列设置;合光单元,合光单元设置在第一光源阵列与第二光源阵列之间,合光单元包括第一合光部件和第二合光部件,第一合光部件具有相间设置的反光部分和透光部分,第一光源阵列发出的光通过反光部分反射,并沿第一方向出射,形成第一光斑阵列,第二光源阵列发出的光通过第二合光部件转向后沿第一方向出射,并形成第二光斑阵列,第二光斑阵列的至少一列光斑位于第一光斑阵列的相邻两列光斑之间。
进一步地,第二合光部件位于第一光源阵列与第二光源阵列之间空间的一侧,并垂直于第一光源阵列和第二光源阵列,第二光源阵列发出的光通过反光部分的反射并沿与第一方向相反的第二方向出射并入射到第二合光部件,第二合光部件将第二光源阵列发出的光偏转,使第二光源阵列发出的光通过第一合光部件的透光部分,并沿第一方向出射。
进一步地,第一方向平行于第一光源阵列所在平面的延伸方向。
进一步地,第一光源阵列包括至少一个通过合光单元形成一列第一光斑列的第一光源组,第一光源组包括至少一个第一光源,第二光源阵列包括至少一个通过合光单元形成一列第二光斑列的第二光源组,第二光源组包括至少一个第二光源,各第一光源与各第二光源一一对应地设置,第一合光部件沿第一方向向逐渐靠近第二光源阵列的方向倾斜设置。
进一步地,第一合光部件的数量与第一光源组的第一光源的数量一致,且第一合光部件对应第一光源组的第一光源设置。
进一步地,第一合光部件包括透明基板和固定设置在透明基板的一侧表面的镀膜层,镀膜层将透明基板分割为多个相间设置的反光部分和透光部分。
进一步地,第二合光部件包括相互垂直的第一反射面和第二反射面,第一反射面和第二反射面形成开口,开口朝向第一方向。
进一步地,第一光源阵列包括至少一个通过合光单元形成一列第一光斑列的第一光源组,各第一光源组至少包括一个第一光源,第二光源阵列包括至少一个通过合光单元形成一列第二光斑列的第二光源组,各第二光源组包括至少一个第二光源,第一光源在第三方向上的投影与相应的第二光源在第三方向上的投影之间具有第一偏移距离,第三方向垂直于第一方向,第一光源在第一方向上的投影与相应的第二光源在第一方向上的投影具有第二偏移距离,沿第三方向处于同一直线上的第一光源构成第一光源列,沿第三方向处于同一直线上的第二光源构成第二光源列。
进一步地,合光单元包括:第一合光部件,第一合光部件与各第一光源列一一对应地设置,第一合光部件具有反光部分和透光部分,第一光源发出的光通过第一合光部件的反光部分反射,并沿第一方向出射,形成第一光斑阵列;第二合光部件,第二合光部件与各第二光源列一一对应地设置,第二光源发出的光通过第二合光部件并沿第一方向出射,经过第一合光部件的透光部分,形成第二光斑阵列。
进一步地,第二合光部件为偏振分光膜;发光装置还包括第三光源阵列,第三光源阵列设置在第一光源阵列的一侧,且第三光源阵列所在平面垂直于第一光源阵列所在平面,第三光源阵列发出的光的偏振态与第一光源阵列和第二光源所发出的光的偏振态不同,第三光源阵列的至少一部分第三光源发出的光通过第二合光部件后通过第一合光部件的透光部分,并沿第一方向出射,形成与第一光斑阵列和第二光斑阵列中的部分光斑重合的光斑。
进一步地,第二合光部件为偏振分光膜;发光装置还包括第三光源阵列、第四光源阵列和设置在第三光源阵列和第四光源阵列之间的调节结构,第三光源阵列和第四光源阵列发出的光的偏振态相同,且不同于第一光源阵列和第二光源阵列发出的光的偏振态,第三光源阵列和第四光源阵列发出的光通过调节结构并沿第一方向出射,形成与第一光斑阵列和第二光斑阵列中的部分光斑重合的光斑。
进一步地,第三光源阵列所在平面平行于第四光源阵列所在平面,且平行于第一方向,第三光源阵列包括至少一个第三光源列,第四光源阵列包括至少一个第四光源列,第三光源阵列的各第三光源与相应的第四光源阵列的第四光源之间沿第一方向具有第三偏移距离;调节结构包括第一反光镜和第二反光镜,第一反光镜与第三光源列一一对应地设置,并使第三光源发出的光沿第一方向出射,第二反光镜与第四光源列一一对应地设置,并使第四光源发出的光沿第一方向出射。
根据本发明的另一方面,提供了一种投影仪,投影仪包括发光装置,所述发光装置为上述的发光装置。
应用本发明的技术方案,发光装置包括第一光源阵列、第二光源阵列和合光单元。第一光源阵列和第二光源阵列作为光源发射激光。第二光源阵列平行于第一光源阵列设置。合光单元设置在第一光源阵列与第二光源阵列之间,合光单元包括第一合光部件和第二合光部件,第一合光部件具有相间设置的反光部分和透光部分,第一光源阵列发出的光通过反光部分反射,并沿第一方向出射,形成第一光斑阵列,第二光源阵列发出的光通过第二合光部件转向后沿第一方向出射,并形成第二光斑阵列,第二光斑阵列的至少一列光斑位于第一光斑阵列的相邻两列光斑之间。通过该发光装置能够在第一光斑阵列中间插入至少部分第二光斑阵列
29 ,由此使得合光更加均匀,合光效果更好。
构成本发明的一部分的附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图 1 示出了本发明的第一实施例的发光装置的主视图;
图 2 示出了本发明的第一实施例的发光装置的俯视图;
图 3 示出了本发明的实施例的发光装置的第一合光部件的立体结构示意图;
图 4 示出了本发明的第一实施例的第一光斑阵列的示意图;
图 5 示出了本发明的第一实施例的第二光斑阵列的示意图;
图 6 示出了本发明的第一实施例的第一光斑阵列和第二光斑阵列组合的示意图;
图 7 示出了本发明的第二实施例的发光装置的主视图;
图 8 示出了本发明的第二实施例的发光装置的俯视图;
图 9 示出了本发明的具有多个偏振态光的发光装置的主视图;
图 10 示出了本发明的具有多个偏振态光的发光装置的俯视图;
图 11 示出了本发明的具有多个偏振态光的发光装置的光斑阵列示意图;
图 12 示出了本发明的另一个具有多个偏振态光的发光装置的主视图;
图 13 示出了图 12 中的发光装置的立体结构示意图;以及
图 14 示出了本发明的另一个具有多个偏振态的发光装置的俯视图。
附图标记说明: 10 、第一光源阵列; 11 、第一光源组; 19 、第一光斑阵列; 20
、第二光源阵列; 21 、第二光源组; 29 、第二光斑阵列; 30 、第一合光部件; 31 、反光部分; 32 、透光部分; 40 、第二合光部件; 41
、第一反射面; 42 、第二反射面; 50 、第三光源阵列; 60 、第四光源阵列; 71 、第一反光镜; 72 、第二反光镜。
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
如图 1 至 14 所示,根据本发明的第一实施例,发光装置包括第一光源阵列 10 、第二光源阵列
20 和合光单元。第一光源阵列 10 和第二光源阵列 20 作为光源发射激光。第二光源阵列 20 平行于第一光源阵列 10 设置。合光单元设置在第一光源阵列
10 与第二光源阵列 20 之间,合光单元包括第一合光部件 30 和第二合光部件 40 ,第一合光部件 30 具有相间设置的反光部分 31 和透光部分 32
,第一光源阵列 10 发出的光通过反光部分 31 反射,并沿第一方向出射,形成第一光斑阵列 19 ,第二光源阵列 20 发出的光通过第二合光部件 40
转向后沿第一方向出射,并形成第二光斑阵列 29 ,第二光斑阵列 29 的至少一列光斑位于第一光斑阵列 19
的相邻两列光斑之间。通过该发光装置能够在第一光斑阵列 19 中间插入至少部分第二光斑阵列 29 ,由此使得合光更加均匀,合光效果更好。
需要说明的是,本实施例中的第一方向为平行第一光源阵列 10 所在平面并向右延伸,也即图 1
中箭头所指方向。在其它实施例中,第一方向并不限于此,第一方向可以根据出光需要和具体的设置结构而具体确定,第一方向确定后,与第一方向相反的方向为第二方向,与第一方向垂直的两个方向中的任意一个可以确定为第三方向,第三方向也可以视具体需求确定。
结合参见图 1 ,在本实施例中,第一光源阵列 10 和第二光源阵列 20
沿竖直方向间隔设置,第一光源阵列 10 内的各第一光源在水平面内布置形成阵列。第一光源阵列 10 沿平行第一方向的同一直线上的第一光源组成第一光源组 11
,沿垂直第一方向的同一直线上的第一光源组成第一光源列。第一光源组 11 发出的光通过合光单元后形成一列第一光斑列。各第一光源组 11
至少包括一个第一光源。
第二光源阵列 20 内的各第二光源在水平面内布置形成阵列,第二光源阵列 20
沿平行第一方向的同一直线上的第二光源组成第二光源组 21 ,沿垂直第一方向的同一直线上的第二光源组成第二光源列。第二光源组 21
发出的光通过合光单元后形成一列第二光斑列。第二光源组 21
至少包括一个第二光源。各第一光源均具有与其相应的第二光源,在本实施例中,两者的光轴在同一直线上。
第一合光部件 30 设置在第一光源阵列 10 与第二光源阵列 20 之间,第一合光部件 30
具有相间设置的反光部分 31 和透光部分 32 ,第一光源阵列 10 发出的光通过反光部分 31 反射,并沿第一方向出射,以形成第一光斑阵列 19 。
第二合光部件 40 位于第一光源阵列 10 与第二光源阵列 20
之间空间的一侧,并垂直于第一光源阵列 10 和第二光源阵列 20 ,第二光源阵列 20 发出的光通过反光部分 31
的反射并沿与第一方向相反的第二方向出射并入射第二合光部件 40 ,第二合光部件 40 将入射光偏移并转向,使第二光源阵列 20 发出的光通过第一合光部件 30
的透光部分 32 ,并沿第一方向出射。
在本实施例中,第一合光部件 30
由透明基板和固定设置在透明基板的一侧表面的镀膜层组成。该透明基板为玻璃板,镀膜层覆盖在玻璃板的一侧,该镀膜层为不反光材料镀膜,玻璃板的由镀膜层覆盖的部分形成反光部分
31 ,未被镀膜层覆盖的部分形成透光部分 32 ,反光部分 31 和透光部分 32 相间设置。通过反光部分 31 和透光部分 32
相间设置就可以保证第一光源阵列 10 和第二光源阵列 20 形成的光斑阵列也是相间设置的,这样发光装置结构简单,占用空间小,且合光均匀,亮度高。
在其它实施例中,透明基板可以为其它透明材质。或者,第一合光部件 30
也可以通过其它结构实现,例如,第一合光部件 30 由多个反射镜片间隔排列形成,其中反射镜片形成反光部分 31 ,两个反射镜片的间隔形成透光部分 32
。第一合光部件 30 也可以通过将反射镜片贴到 AR 膜片上形成。
为了保证第一光源组 11 或第二光源组 21 发出的光能够形成一列光斑,第一合光部件 30
沿第一方向向逐渐靠近第二光源阵列 20 的方向倾斜设置,以便能够形成一列光斑。
第一合光部件 30
可以为一个完整的部件,例如在一个完整的玻璃板上对应各第一光源的位置处镀膜形成反光部分 31 。
优选地,为了便于设置,便于调整,同时节省设置空间,第一合光部件 30 为多个单独的部件。第一合光部件
30 的数量与第一光源组 11 的第一光源的数量一致,且第一合光部件 30 对应第一光源组 11 的第一光源设置。第一合光部件 30
的长度方向与第一光源列的方向一致,且第一光源组 11 内的各第一光源均对应有一个第一合光部件 30 。
第二合光部件 40 包括相互垂直的第一反射面 41 和第二反射面 42 ,第一反射面 41
和第二反射面 42 形成开口,开口朝向第一方向。这样就能够实现对第二光源发出的光的光路进行偏移和反转,使第二光源发出的光通过第一合光部件 30 的透光部分
32 ,进而实现第二光斑阵列 29 中的至少部分光斑位于第一光斑阵列 19 的相邻两列之间,使得合光均匀性更好。
第二光源阵列 20 发出的光透过透明基板后照射在反光部分 31 上,经反光部分 31
的反射而沿第二方向出射,并照射入第一反射面 41 ,通过第一反射面 41 反射至第二反射面 42 ,经由第二反射面 42
的反射沿第一方向出射,且出射光线与入射光线之间产生偏移,使得经过第二反射面 42 反射的光线通过第一合光部件 30 的透光部分 32 ,并形成第二光斑阵列
29 。
本实施例中,第二合光部件 40 为等腰直角棱镜。在其它实施例中,第二合光部件 40
也可以由两个相互垂直的反射平面镜构成,或由其它能够偏移并反转光路的元件构成。
根据本发明的第二实施例,第一光源和第二光源可以为相互偏置的。
例如,第一光源阵列 10 在水平面内设置,且沿平行第一方向的同一直线上的第一光源组成第一光源组 11
,沿垂直第一方向的同一直线上的第一光源组成第一光源列,第一光源组 11 至少包括一个第一光源。第二光源阵列 20 沿竖直方向间隔于第一光源阵列 10
设置,且第二光源阵列 20 也在水平面内设置,且沿平行第一方向的同一直线上的第二光源组成第二光源组 21
,沿垂直第一方向的同一直线上的第二光源组成第二光源列,第二光源组 21
包括至少一个第二光源。第一光源与第二光源对应设置,但第一光源在第三方向上的投影与相应的第二光源在第三方向上的投影之间具有第一偏移距离,第一光源在第一方向上的投影与相应的第二光源在第一方向上的投影具有第二偏移距离。沿第三方向处于同一直线上的第一光源构成该第一光源列,沿第三方向处于同一直线上的第二光源构成该第二光源列。这样设置的第一光源阵列
10 和第二光源阵列 20 能够是光斑在空间上均布。
若第一光源阵列 10 和第二光源阵列 20 采用此种设置方式,则合光单元包括第一合光部件 30
和第二合光部件 40 。
其中,第一合光部件 30 与各第一光源列一一对应地设置,第一合光部件 30 具有反光部分 31
和透光部分 32 ,第一光源发出的光通过第一合光部件 30 的反光部分 31 反射,并沿第一方向出射,形成第一光斑阵列 19 。
第二合光部件 40 与各第二光源列一一对应地设置,第二光源发出的光通过第二合光部件 40
并沿第一方向出射,经过第一合光部件 30 的透光部分 32 ,形成第二光斑阵列 29 。
在本实施例中,第一合光部件 30 可以为本发明的第一实施例中第一合光部件 30 的结构。第二合光部件
40 可以为反光镜。第一合光部件 30 沿第一方向向逐渐靠近第二光源阵列 20 的方向倾斜设置,第二合光部件 40 沿第一方向向逐渐靠近第一光源阵列 10
的方向倾斜设置,以保证第一光源和第二光源发出的光的出射方向一致。
优选地,为了提高光斑内的填充因子,使光强更强,亮度更高,发光装置还包括第三光源阵列 50
,第三光源阵列 50 设置在第一光源阵列 10 的一侧,且第三光源阵列 50 所在平面垂直于第一光源阵列 10 所在平面,第三光源阵列 50
发出的光的偏振态与第一光源阵列 10 和第二光源所发出的光的偏振态不同。例如,第一光源阵列 10 和第二光源阵列 20 发出的光为 S 光,则第三光源阵列
50 发出的光为 P 光,这样通过发光装置形成的光斑亮度更高。
若发光装置包括两种偏振态的光,则第二合光部件 40 为偏振分光膜。第三光源阵列 50
的至少一部分第三光源发出的光通过第二合光部件 40 后通过第一合光部件 30 的透光部分 32 ,并沿第一方向出射,形成与第一光斑阵列 19 和第二光斑阵列
29 中的部分光斑重合的光斑。
结合参见图 9 ,第三光源阵列 50
的一部分第三光源发出的光直接沿第一方向出射并形成第三光斑。第三光源阵列 50
的另一部分第三光源发出的光通过偏振分光膜,并沿第一方向出射,形成于第一光斑或第二光斑叠加的光斑。第二光源阵列 20
的第二光源发出的光通过偏振分光膜后,被偏振分光膜反射,沿第一方向出射并形成第二光斑。
在本实施例中,第三光源阵列 50 所在平面垂直于第一方向。
在其它实施例中,发光装置可以包括第三光源阵列 50 、第四光源阵列 60 和设置在第三光源阵列 50
和第四光源阵列 60 之间的调节结构,以此构成空间错位光源结构,使得填充比率更高。
其中,第三光源阵列 50 和第四光源阵列 60 发出的光的偏振态相同,且不同于第一光源阵列 10
和第二光源阵列 20 发出的光的偏振态,例如,第三光源阵列 50 和第四光源阵列 60 发出 P 光,而第一光源阵列 10 和第二光源阵列 20 发出 S
光。或者,第三光源阵列 50 和第四光源阵列 60 发出 S 光,而第一光源阵列 10 和第二光源阵列 20 发出 P 光。
第三光源阵列 50 和第四光源阵列 60 发出的光通过调节结构并沿第一方向出射,形成与第一光斑阵列
19 和第二光斑阵列 29 中的部分光斑重合的光斑。
其中,第三光源阵列 50 所在平面平行于第四光源阵列 60 所在平面,且平行于第一方向,第三光源阵列
50 包括至少一个第三光源列,第四光源阵列 60 包括至少一个第四光源列,第三光源阵列 50 的各第三光源与相应的第四光源阵列 60
的第四光源之间沿第一方向具有第三偏移距离。
调节结构包括第一反光镜 71 和第二反光镜 72 ,第一反光镜 71
与第三光源列一一对应地设置,并使第三光源发出的光沿第一方向出射,第二反光镜 72
与第四光源列一一对应地设置,并使第四光源发出的光沿第一方向出射。这样能够在第一光斑阵列中填充填充因子,使得光斑亮度更高。
第一合光部件 30 的反光部分 31 也可以是偏振分光膜,第一光源阵列 10
的第一光源发出的光通过反光部分 31 后,沿第一方向出射,并形成第一光斑。
根据本发明的另一方面,提供一种投影仪,投影仪包括发光装置,所述发光装置为上述的发光装置。
从以上的描述中,可以看出,本发明上述的实施例实现了如下技术效果:本发明的发光装置采用全新的压缩形式,可得一小体积、高亮度的激光光源。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (13)
1. 一种发光装置,其特征在于,包括:
第一光源阵列(10);
第二光源阵列(20),所述第二光源阵列(20)平行于所述第一光源阵列(10)设置;
合光单元,所述合光单元设置在所述第一光源阵列(10)与所述第二光源阵列(20)之间,所述合光单元包括第一合光部件(30)和第二合光部件(40),所述第一合光部件(30)具有相间设置的反光部分(31)和透光部分(32),所述第一光源阵列(10)发出的光通过所述反光部分(31)反射,并沿所述第一方向出射,形成第一光斑阵列(19),所述第二光源阵列(20)发出的光通过所述第二合光部件(40)转向后沿所述第一方向出射,并形成第二光斑阵列(29),所述第二光斑阵列(29)的至少一列光斑位于所述第一光斑阵列(19)的相邻两列光斑之间。
2. 根据权利要求1所述的发光装置,其特征在于,
所述第二合光部件(40)位于所述第一光源阵列(10)与所述第二光源阵列(20)之间空间的一侧,并垂直于所述第一光源阵列(10)和所述第二光源阵列(20),所述第二光源阵列(20)发出的光通过所述反光部分(31)的反射并沿与所述第一方向相反的第二方向出射并入射到所述第二合光部件(40),所述第二合光部件(40)将所述第二光源阵列(20)发出的光偏转,使所述第二光源阵列(20)发出的光通过所述第一合光部件(30)的透光部分(32),并沿所述第一方向出射。
3. 根据权利要求1或2所述的发光装置,其特征在于,所述第一方向平行于所述第一光源阵列(10)所在平面的延伸方向。
4.
根据权利要求2所述的发光装置,其特征在于,所述第一光源阵列(10)包括至少一个通过所述合光单元形成一列所述第一光斑列的第一光源组(11),所述第一光源组(11)包括至少一个第一光源,所述第二光源阵列(20)包括至少一个通过所述合光单元形成一列所述第二光斑列的第二光源组(21),所述第二光源组(21)包括至少一个第二光源,各所述第一光源与各所述第二光源一一对应地设置,所述第一合光部件(30)沿所述第一方向向逐渐靠近所述第二光源阵列(20)的方向倾斜设置。
5.
根据权利要求4所述的发光装置,其特征在于,所述第一合光部件(30)的数量与所述第一光源组(11)的所述第一光源的数量一致,且所述第一合光部件(30)对应所述第一光源组(11)的所述第一光源设置。
6.
根据权利要求2所述的发光装置,其特征在于,所述第一合光部件(30)包括透明基板和固定设置在所述透明基板的一侧表面的镀膜层,所述镀膜层将所述透明基板分割为多个相间设置的所述反光部分(31)和所述透光部分(32)。
7.
根据权利要求2所述的发光装置,其特征在于,所述第二合光部件(40)包括相互垂直的第一反射面(41)和第二反射面(42),所述第一反射面(41)和所述第二反射面(42)形成开口,所述开口朝向所述第一方向。
8.
根据权利要求1所述的发光装置,其特征在于,所述第一光源阵列(10)包括至少一个通过所述合光单元形成一列所述第一光斑列的第一光源组(11),各所述第一光源组(11)至少包括一个所述第一光源,所述第二光源阵列(20)包括至少一个通过所述合光单元形成一列所述第二光斑列的第二光源组(21),各所述第二光源组(21)包括至少一个所述第二光源,所述第一光源在第三方向上的投影与相应的所述第二光源在第三方向上的投影之间具有第一偏移距离,所述第三方向垂直于所述第一方向,所述第一光源在第一方向上的投影与相应的所述第二光源在第一方向上的投影具有第二偏移距离,沿所述第三方向处于同一直线上的所述第一光源构成第一光源列,沿所述第三方向处于同一直线上的所述第二光源构成第二光源列。
9. 根据权利要求8所述的发光装置,其特征在于,所述合光单元包括:
第一合光部件(30),所述第一合光部件(30)与各所述第一光源列一一对应地设置,所述第一合光部件(30)具有反光部分(31)和透光部分(32),所述第一光源发出的光通过所述第一合光部件(30)的反光部分(31)反射,并沿所述第一方向出射,形成所述第一光斑阵列(19);
第二合光部件(40),所述第二合光部件(40)与各所述第二光源列一一对应地设置,所述第二光源发出的光通过所述第二合光部件(40)并沿所述第一方向出射,经过所述第一合光部件(30)的透光部分(32),形成所述第二光斑阵列(29)。
10. 根据权利要求9所述的发光装置,其特征在于,
所述第二合光部件(40)为偏振分光膜;
所述发光装置还包括第三光源阵列(50),所述第三光源阵列(50)设置在所述第一光源阵列(10)的一侧,且所述第三光源阵列(50)所在平面垂直于所述第一光源阵列(10)所在平面,所述第三光源阵列(50)发出的光的偏振态与所述第一光源阵列(10)和所述第二光源所发出的光的偏振态不同,所述第三光源阵列(50)的至少一部分所述第三光源发出的光通过所述第二合光部件(40)后通过所述第一合光部件(30)的透光部分(32),并沿所述第一方向出射,形成与所述第一光斑阵列(19)和所述第二光斑阵列(29)中的部分光斑重合的光斑。
11. 根据权利要求9所述的发光装置,其特征在于,
所述第二合光部件(40)为偏振分光膜;
所述发光装置还包括第三光源阵列(50)、第四光源阵列(60)和设置在所述第三光源阵列(50)和所述第四光源阵列(60)之间的调节结构,所述第三光源阵列(50)和所述第四光源阵列(60)发出的光的偏振态相同,且不同于所述第一光源阵列(10)和所述第二光源阵列(20)发出的光的偏振态,所述第三光源阵列(50)和所述第四光源阵列(60)发出的光通过所述调节结构并沿所述第一方向出射,形成与所述第一光斑阵列(19)和所述第二光斑阵列(29)中的部分光斑重合的光斑。
12. 根据权利要求11所述的发光装置,其特征在于,
所述第三光源阵列(50)所在平面平行于所述第四光源阵列(60)所在平面,且平行于所述第一方向,所述第三光源阵列(50)包括至少一个第三光源列,所述第四光源阵列(60)包括至少一个第四光源列,所述第三光源阵列(50)的各第三光源与相应的所述第四光源阵列(60)的第四光源之间沿所述第一方向具有第三偏移距离;
所述调节结构包括第一反光镜(71)和第二反光镜(72),所述第一反光镜(71)与所述第三光源列一一对应地设置,并使所述第三光源发出的光沿所述第一方向出射,所述第二反光镜(72)与所述第四光源列一一对应地设置,并使所述第四光源发出的光沿所述第一方向出射。
13.
一种投影仪,投影仪包括发光装置,其特征在于,所述发光装置为权利要求1至12中任一项所述的发光装置。
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