WO2019015296A1 - Light homogenizing device, light source system and projection equipment - Google Patents
Light homogenizing device, light source system and projection equipment Download PDFInfo
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- WO2019015296A1 WO2019015296A1 PCT/CN2018/074753 CN2018074753W WO2019015296A1 WO 2019015296 A1 WO2019015296 A1 WO 2019015296A1 CN 2018074753 W CN2018074753 W CN 2018074753W WO 2019015296 A1 WO2019015296 A1 WO 2019015296A1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
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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
Definitions
- the utility model relates to the field of projection technology, in particular to a light homogenizing device, a light source system and a projection device.
- a diffuser is usually added to the front of the homogenizing rod on the market, so that the laser spot from the homogenizing rod is more uniform, so that the laser spot on the fluorescent color wheel is more uniform, and finally the fluorescent color wheel is made.
- the excitation efficiency is higher, that is, the light power output from the light source is higher.
- the utility model can provide an effective reduction The light homogenizing device, the light source system and the projection device of the light rod damage rate.
- a light homogenizing device comprising a light homogenizing rod body, wherein one of opposite ends of the homogenizing rod body is formed with a light incident surface, and the light incident surface is a scattering surface for incident The light beam to the light incident surface is scattered.
- the light incident surface is a diffuse scattering surface formed by roughening treatment.
- the light incident surface is distributed with a plurality of protrusions/recesses for scattering the light beam.
- the homogenizing rod body has a solid structure.
- an outer surface of the portion of the light homogenizing rod located between the opposite ends is formed with an array of curved portions, and an array of the curved surface portions facing the outside of the uniformizing rod body is plated for light Reflective reflective film.
- the light homogenizing rod body is a cylindrical structure having one end closed to the other end, the light incident surface is disposed at a closed end of the light homogenizing rod body, and external light is incident from the light incident surface to the uniformity Inside the light rod, and exiting from the open end of the homogenizing rod body.
- an inner surface of the portion of the homogenizing rod body located between the opposite ends is formed with an array of curved surfaces, and an array of the curved surface portion facing the interior of the uniformizing rod body is plated for light Reflective reflective film.
- the curved surface portion array is provided with a plurality of compound eyes or cylinders extending in the optical path direction.
- a light source system comprising: an illuminator and the light homogenizing device according to any one of the preceding claims, wherein a light beam emitted from the illuminant is incident from the light incident surface to the light homogenizing device, and is uniformed by the light homogenizing device After the light, it is emitted.
- a projection apparatus applying the light homogenizing device of any of the above.
- the light homogenizing device provided by the utility model comprises a light homogenizing rod body provided with the light incident surface, and the light incident surface is a scattering surface, which improves the light uniformity of the light homogenizing rod body and avoids additional addition.
- a gap exists between the scattering member and the uniform light rod body, causing the gap to enter dust to burn out the phenomenon of the light homogenizing device, and prolonging the light homogenizing device and the light source system and projection using the light homogenizing device The service life of the equipment.
- FIG. 1 is a side view showing the structure of a light homogenizing device according to a first embodiment of the present invention.
- FIG. 2 is a schematic perspective view of a light homogenizing device according to a second embodiment of the present invention.
- FIG. 1 is a schematic side view showing a structure of a light homogenizing device according to a first embodiment of the present invention.
- the light-collecting device includes a light-receiving rod 120, and the light-receiving rod 120 includes a light-incident end 122 and a light-emitting end 122.
- the light-incident end is formed with a light-incident surface 121. It is a scattering surface for scattering a light beam incident on the light incident surface 121.
- the material of the light homogenizing rod 120 is a light transmissive medium, including but not limited to glass and plastic.
- the light incident surface 121 is a diffuse scattering surface formed by roughening treatment.
- the light incident surface 121 is distributed with a plurality of protrusions/recesses for scattering external light.
- the protrusions/recesses may be strips, cylinders, spheres, truncated cones, cones or pyramids.
- the protrusions/recesses reflect the incident light beam multiple times, thereby improving the uniformity of light exiting the light incident surface 121.
- the homogenizing rod body 120 may have a solid structure, and the outer surface of the portion of the homogenizing rod body 120 between the light incident end and the light emitting end 122 is provided with a reflective film to reflect incident light.
- the light-emitting rod body 120 is a cylindrical structure in which the light-incident end closes the opening end of the light-emitting end 122, and the light-incident surface 121 is disposed at the light-incident end of the light-emitting rod body 120, and the external light is from the light-emitting surface.
- the light incident surface 121 is incident into the light homogenizing rod body 120 and is emitted from the light emitting end 122 of the light homogenizing rod body 120.
- the light homogenizing device provided in this embodiment is used for aligning incident light and can be applied to a light source system and a projection device.
- the light source system includes an illuminant and a light concentrating device, and a light beam emitted from the illuminator is incident on the light concentrating device from the light incident surface 121, and is lighted by the light absorbing device to be emitted.
- the projection device may apply the homogenizing device for homogenizing, or apply a light source system using the homogenizing device.
- the illuminant can be a direct illuminant (such as a laser diode) or an indirect illuminant that emits fluorescence.
- the light-emitting rod body 120 includes the light-incident surface 121, and the light-incident surface 121 is a scattering surface, which improves the uniformity of the light-emitting rod body 120, and avoids additional addition.
- a gap exists between the scattering member and the homogenizing rod body 120, causing the gap to enter dust to burn out the phenomenon of the homogenizing device, and prolonging the light homogenizing device and the light source system using the homogenizing device and The life of the projection device.
- FIG. 2 is a schematic perspective view of a light homogenizing device according to a second embodiment of the present invention.
- the main difference between the second embodiment and the first embodiment is that the outer surface of the portion where the light-emitting rod 220 is located between the light-incident end and the light-emitting end is formed with a curved surface array 223, and the curved surface array 223 faces the The surface of the outside of the homogenizing rod body 220 is plated with a reflecting film for reflecting light.
- the curved surface array 223 is provided with a plurality of cylindrical bodies extending in the optical path direction.
- the curved portion array 223 may be provided with a plurality of compound eyes extending in the direction of the optical path.
- the homogenizing rod body 220 is a cylindrical solid structure. It can be understood that in other embodiments, the homogenizing rod 220 can also be a square prism or a solid structure of other shapes.
- the light beam After the light beam enters the homogenizing rod body 220, part of the small-angle incident light directly exits through the homogenizing rod body 220, and incident light of other angles is transmitted inside the homogenizing rod body 220 to reach the curved surface portion array 223. s surface. Since the surface of the curved surface portion array 223 is curved and the reflective film is plated, the light beam is reflected on the surface of the curved surface portion array 223, and the direction of the reflection is determined by the curvature of the curved surface portion array 223 and the incident angle of the light beam. After the beam is reflected by the curved surface, the direction of the beam changes, and the number of reflections increases. In the case of the equal length and cross-sectional area of the homogenizing rod body 220, the more the number of reflections, the better the uniformity effect, and the better the uniformity of the spot distribution.
- the light incident surface 221 of the light homogenizing rod 220 has a polygonal cross section and a size similar to that of the external light source.
- the cross-sectional area of the light incident surface 221 may be larger than the light emitting area of the external light source under the condition that the amount of optical expansion is allowed to become large.
- the light-shading rod body 220 is a cylindrical structure that closes the light-end opening at the light-incident end, and the light-incident surface 221 is disposed at the closed end of the light-emitting rod body 220, and the external light is
- the light incident surface 221 is incident on the light-emitting rod body 220, and is emitted from the light-emitting end of the light-emitting rod body 220.
- a surface of the curved surface portion array 223 facing the inside of the uniform light rod body 220 is plated with a reflective film for reflecting light.
- the curved surface array 223 is provided with a plurality of compound eyes or cylinders extending in the optical path direction.
- the light beam is reflected on the surface of the curved surface portion array 223, and the direction of the reflection is determined by the curvature of the curved surface portion array 223 and the incident angle of the light beam. After the beam is reflected by the curved surface, the direction of the beam changes, and the number of reflections increases. In the case of the equal length and cross-sectional area of the homogenizing rod body 220, the more the number of reflections, the better the uniformity effect, and the better the uniformity of the spot distribution.
- the second embodiment is the same as the first embodiment, the light-emitting rod body 220 includes the light-incident surface 221, and the light-incident surface 221 is a scattering surface, and the uniform light rod body 220 is improved.
- the uniformity of light emission avoids the occurrence of a gap between the additionally added scattering member and the homogenizing rod body 220, causing the gap to enter dust to burn out the phenomenon of the homogenizing device, and prolonging the homogenizing device and The life of the light source system and the projection device using the light homogenizing device.
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Provided are a light homogenizing device, a light source system and projection equipment. The light homogenizing device comprises a light homogenizing rod body (120), and one of the opposite ends of the homogenizing rod body (120) is formed with a light incident surface (121). The light incident surface (121) is a scattering surface for scattering a light beam incident on the light incident surface (121). The scattering surface improves the uniformity of light emission of the homogenizing rod body (120), and avoids a gap that is formed between a separately added scattering member and the homogenizing rod body (120), which may let dust to enter and burn out the homogenizing device, thereby extending the service life of the homogenizing device and the light source system and projection equipment using the homogenizing device.
Description
本实用新型涉及投影技术领域，尤其涉及一种匀光装置、光源系统及投影设备。The utility model relates to the field of projection technology, in particular to a light homogenizing device, a light source system and a projection device.
本部分旨在为权利要求书中陈述的本实用新型的具体实施方式提供背景或上下文。此处的描述不因为包括在本部分中就承认是现有技术。This section is intended to provide a context or context for the specific embodiments of the invention set forth in the claims. The description herein is not admitted to be prior art as it is included in this section.
目前市场上使用的匀光棒前面通常都加入一片散射片，这样可以让从匀光棒出来的激光光斑更加均匀，从而使打在荧光色轮上的激光光斑更加均匀，最终使荧光色轮的激发效率更高，即光源输出的光功率更高。At present, a diffuser is usually added to the front of the homogenizing rod on the market, so that the laser spot from the homogenizing rod is more uniform, so that the laser spot on the fluorescent color wheel is more uniform, and finally the fluorescent color wheel is made. The excitation efficiency is higher, that is, the light power output from the light source is higher.
然而，匀光棒与散射片之间有一狭小间隙，当空气中的灰尘或杂质掉进此间隙时，由于此间隙的面积较小，导致激光功率密度和灰尘杂质分子浓度较高，灰尘或杂质分子在光源长时间工作环境下将烧坏散光片和匀光棒。However, there is a narrow gap between the homogenizing rod and the diffusing sheet. When dust or impurities in the air fall into the gap, the laser power density and dust impurity molecular concentration are high due to the small area of the gap, dust or impurities. The molecules will burn out the astigmatism sheet and the homogenizing rod under the long-term working environment of the light source.
实用新型内容Utility model content
为解决现有技术中散射片与匀光棒之间存在间隙导致所述空隙中进入灰尘，进而烧坏所述散射片和所述匀光棒的技术问题，本实用新型提供一种可以有效降低所述匀光棒损坏率的匀光装置、光源系统及投影设备。In order to solve the technical problem that the gap between the diffusing sheet and the light collecting rod in the prior art causes dust to enter the gap and burn out the diffusing sheet and the light collecting rod, the utility model can provide an effective reduction The light homogenizing device, the light source system and the projection device of the light rod damage rate.
一种匀光装置，所述匀光装置包括匀光棒体，所述匀光棒体的相对两端中的其中一端形成有入光面，所述入光面为散射面，用于对入射至所述入光面的光束进行散射。A light homogenizing device comprising a light homogenizing rod body, wherein one of opposite ends of the homogenizing rod body is formed with a light incident surface, and the light incident surface is a scattering surface for incident The light beam to the light incident surface is scattered.
进一步地，所述入光面为经粗糙化处理后形成的漫散射面。Further, the light incident surface is a diffuse scattering surface formed by roughening treatment.
进一步地，所述入光面分布有多个用于对光束进行散射的凸起/凹陷。Further, the light incident surface is distributed with a plurality of protrusions/recesses for scattering the light beam.
进一步地，所述匀光棒体为实心结构。Further, the homogenizing rod body has a solid structure.
进一步地，所述匀光棒体位于所述相对两端之间的部位的外表面形成有曲面部阵列，所述曲面部阵列面向所述匀光棒体外部的表面镀设有用于对光进行反射的反射膜。Further, an outer surface of the portion of the light homogenizing rod located between the opposite ends is formed with an array of curved portions, and an array of the curved surface portions facing the outside of the uniformizing rod body is plated for light Reflective reflective film.
进一步地，所述匀光棒体为一端封闭另一端开口的筒状结构，所述入光面设置于所述匀光棒体的封闭端，外部光线从所述入光面入射到所述匀光棒体内，并从所述匀光棒体的开口端出射。Further, the light homogenizing rod body is a cylindrical structure having one end closed to the other end, the light incident surface is disposed at a closed end of the light homogenizing rod body, and external light is incident from the light incident surface to the uniformity Inside the light rod, and exiting from the open end of the homogenizing rod body.
进一步地，所述匀光棒体位于所述相对两端之间的部位的内表面形成有曲面部阵列，所述曲面部阵列面向所述匀光棒体内部的表面镀设有用于对光进行反射的反射膜。Further, an inner surface of the portion of the homogenizing rod body located between the opposite ends is formed with an array of curved surfaces, and an array of the curved surface portion facing the interior of the uniformizing rod body is plated for light Reflective reflective film.
进一步地，所述曲面部阵列设置有沿光路方向延伸的多个复眼或柱面体。Further, the curved surface portion array is provided with a plurality of compound eyes or cylinders extending in the optical path direction.
一种光源系统，包括发光体及如上所述任意一项所述的匀光装置，所述发光体发出的光束自所述入光面入射至所述匀光装置，经所述匀光装置匀光后出射。A light source system comprising: an illuminator and the light homogenizing device according to any one of the preceding claims, wherein a light beam emitted from the illuminant is incident from the light incident surface to the light homogenizing device, and is uniformed by the light homogenizing device After the light, it is emitted.
一种投影设备，应用如上所述任意一项所述的匀光装置。A projection apparatus applying the light homogenizing device of any of the above.
本实用新型提供的匀光装置包括设置有所述入光面的匀光棒体，并且所述入光面为散射面，提高了所述匀光棒体的出光均匀度，避免了另外添加的散射部件与所述匀光棒体之间存在间隙导致所述间隙进入灰尘从而烧坏所述匀光装置现象的发生，延长了所述匀光装置及采用所述匀光装置的光源系统及投影设备的使用寿命。The light homogenizing device provided by the utility model comprises a light homogenizing rod body provided with the light incident surface, and the light incident surface is a scattering surface, which improves the light uniformity of the light homogenizing rod body and avoids additional addition. A gap exists between the scattering member and the uniform light rod body, causing the gap to enter dust to burn out the phenomenon of the light homogenizing device, and prolonging the light homogenizing device and the light source system and projection using the light homogenizing device The service life of the equipment.
图1为本实用新型第一实施例提供的匀光装置的侧视结构示意图。1 is a side view showing the structure of a light homogenizing device according to a first embodiment of the present invention.
图2为本实用新型第二实施例提供的匀光装置的立体结构示意图。2 is a schematic perspective view of a light homogenizing device according to a second embodiment of the present invention.
主要元件符号说明Main component symbol description
|
匀光棒体 |
120、220120, 220 |
|
入光面 |
121、221121, 221 |
|
出光端 |
122122 |
|
曲面部阵列 |
223223 |
如下具体实施方式将结合上述附图进一步说明本实用新型。The present invention will be further described in conjunction with the above drawings in the following detailed description.
请参阅图1，图1为本实用新型第一实施例提供的匀光装置侧视结构示意图。Please refer to FIG. 1. FIG. 1 is a schematic side view showing a structure of a light homogenizing device according to a first embodiment of the present invention.
所述匀光装置包括匀光棒体120，所述匀光棒体120的包括相对设置的入光端及出光端122，所述入光端形成有入光面121，所述入光面121为散射面，用于对入射至所述入光面121的光束进行散射。The light-collecting device includes a light-receiving rod 120, and the light-receiving rod 120 includes a light-incident end 122 and a light-emitting end 122. The light-incident end is formed with a light-incident surface 121. It is a scattering surface for scattering a light beam incident on the light incident surface 121.
所述匀光棒体120的材质为透光介质，所述透光介质包括但不限于玻璃及塑料。The material of the light homogenizing rod 120 is a light transmissive medium, including but not limited to glass and plastic.
具体地，所述入光面121为经粗糙化处理后形成的漫散射面。所述入光面121分布有多个用于对外部光线进行散射的凸起/凹陷。所述凸起/凹陷可为条状、圆柱状、球状、圆台状、圆锥状或棱锥状。所述凸起/凹陷对入射光束进行多次反射，从而提高所述入光面121的出光均匀度。Specifically, the light incident surface 121 is a diffuse scattering surface formed by roughening treatment. The light incident surface 121 is distributed with a plurality of protrusions/recesses for scattering external light. The protrusions/recesses may be strips, cylinders, spheres, truncated cones, cones or pyramids. The protrusions/recesses reflect the incident light beam multiple times, thereby improving the uniformity of light exiting the light incident surface 121.
所述匀光棒体120可以为实心结构，所述匀光棒体120位于所述入光端与所述出光端122之间的部位的外表面设置有反射膜，以对入射光进行反射。在其他实施例中，所述匀光棒体120为入光端封闭出光端122开口的筒状结构，入光面121设置于所述匀光棒体120的入光端，外部光线从所述入光面121入射到所述匀光棒体120内，并从所述匀光棒体120的出光端122出射。The homogenizing rod body 120 may have a solid structure, and the outer surface of the portion of the homogenizing rod body 120 between the light incident end and the light emitting end 122 is provided with a reflective film to reflect incident light. In other embodiments, the light-emitting rod body 120 is a cylindrical structure in which the light-incident end closes the opening end of the light-emitting end 122, and the light-incident surface 121 is disposed at the light-incident end of the light-emitting rod body 120, and the external light is from the light-emitting surface. The light incident surface 121 is incident into the light homogenizing rod body 120 and is emitted from the light emitting end 122 of the light homogenizing rod body 120.
本实施例提供的匀光装置用于对入射光线进行匀光并能够应用于光源系统及投影设备。所述光源系统包括发光体及所述匀光装置，所述发光体发出的光束自所述入光面121入射至所述匀光装置，经所 述匀光装置匀光后出射。所述投影设备可以应用所述匀光装置进行匀光，或应用采用所述匀光装置的光源系统。可以理解，发光体可以为直接发光体(如激光二极管)，也可以为发出荧光的间接发光体。The light homogenizing device provided in this embodiment is used for aligning incident light and can be applied to a light source system and a projection device. The light source system includes an illuminant and a light concentrating device, and a light beam emitted from the illuminator is incident on the light concentrating device from the light incident surface 121, and is lighted by the light absorbing device to be emitted. The projection device may apply the homogenizing device for homogenizing, or apply a light source system using the homogenizing device. It can be understood that the illuminant can be a direct illuminant (such as a laser diode) or an indirect illuminant that emits fluorescence.
本实施例中，所述匀光棒体120包括所述入光面121，并且所述入光面121为散射面，提高了所述匀光棒体120的出光均匀度，避免了另外添加的散射部件与所述匀光棒体120之间存在间隙导致所述间隙进入灰尘从而烧坏所述匀光装置现象的发生，延长了所述匀光装置及采用所述匀光装置的光源系统及投影设备的使用寿命。In this embodiment, the light-emitting rod body 120 includes the light-incident surface 121, and the light-incident surface 121 is a scattering surface, which improves the uniformity of the light-emitting rod body 120, and avoids additional addition. A gap exists between the scattering member and the homogenizing rod body 120, causing the gap to enter dust to burn out the phenomenon of the homogenizing device, and prolonging the light homogenizing device and the light source system using the homogenizing device and The life of the projection device.
请参阅图2，为本实用新型第二实施例提供的匀光装置立体结构示意图。Please refer to FIG. 2 , which is a schematic perspective view of a light homogenizing device according to a second embodiment of the present invention.
第二实施例与第一实施例的主要区别在于，所述匀光棒体220位于入光端与出光端之间的部位的外表面形成有曲面部阵列223，所述曲面部阵列223面向所述匀光棒体220外部的表面镀设有用于对光进行反射的反射膜。本实施例中，所述曲面部阵列223设置有沿光路方向延伸的多个柱面体。在其他实施例中，曲面部阵列223可以设置有沿光路方向延伸的多个复眼。The main difference between the second embodiment and the first embodiment is that the outer surface of the portion where the light-emitting rod 220 is located between the light-incident end and the light-emitting end is formed with a curved surface array 223, and the curved surface array 223 faces the The surface of the outside of the homogenizing rod body 220 is plated with a reflecting film for reflecting light. In this embodiment, the curved surface array 223 is provided with a plurality of cylindrical bodies extending in the optical path direction. In other embodiments, the curved portion array 223 may be provided with a plurality of compound eyes extending in the direction of the optical path.
本实施例中，所述匀光棒体220为圆柱形实心结构。可以理解的是，在其他实施例中，所述匀光棒体220还可以是四方棱柱或是其他形状的实心结构。In this embodiment, the homogenizing rod body 220 is a cylindrical solid structure. It can be understood that in other embodiments, the homogenizing rod 220 can also be a square prism or a solid structure of other shapes.
光束进入所述匀光棒体220后，部分小角度入射光直接穿过所述匀光棒体220出射，其它角度的入射光在所述匀光棒体220内部传输到达所述曲面部阵列223的表面。由于所述曲面部阵列223表面是曲面且镀设反射膜，光束在所述曲面部阵列223表面发生反射，反射的方向由所述曲面部阵列223的曲率和光束的入射角决定。光束经过曲面反射后光束的传输方向发生改变，反射的次数增多。在所述匀光棒体220同等长度和横截面积的情况下，反射的次数越多，匀光效果越好，光斑分布的均匀性就越好。After the light beam enters the homogenizing rod body 220, part of the small-angle incident light directly exits through the homogenizing rod body 220, and incident light of other angles is transmitted inside the homogenizing rod body 220 to reach the curved surface portion array 223. s surface. Since the surface of the curved surface portion array 223 is curved and the reflective film is plated, the light beam is reflected on the surface of the curved surface portion array 223, and the direction of the reflection is determined by the curvature of the curved surface portion array 223 and the incident angle of the light beam. After the beam is reflected by the curved surface, the direction of the beam changes, and the number of reflections increases. In the case of the equal length and cross-sectional area of the homogenizing rod body 220, the more the number of reflections, the better the uniformity effect, and the better the uniformity of the spot distribution.
在本实施例中，所述匀光棒体220的入光面221的横截面为多边形，且其大小和外部光源的发光面积相近。在允许光学扩展量变大的 条件下，所述入光面221的横截面积可以比外部光源的发光面积大。In this embodiment, the light incident surface 221 of the light homogenizing rod 220 has a polygonal cross section and a size similar to that of the external light source. The cross-sectional area of the light incident surface 221 may be larger than the light emitting area of the external light source under the condition that the amount of optical expansion is allowed to become large.
可以理解，在其他实施例中，所述匀光棒体220为入光端封闭出光端开口的筒状结构，所述入光面221设置于所述匀光棒体220的封闭端，外部光线从所述入光面221入射到所述匀光棒体220内，并从所述匀光棒体220的出光端出射。所述曲面部阵列223面向所述匀光棒体220内部的表面镀设有用于对光进行反射的反射膜。所述曲面部阵列223设置有沿光路方向延伸的多个复眼或柱面体。It can be understood that, in other embodiments, the light-shading rod body 220 is a cylindrical structure that closes the light-end opening at the light-incident end, and the light-incident surface 221 is disposed at the closed end of the light-emitting rod body 220, and the external light is The light incident surface 221 is incident on the light-emitting rod body 220, and is emitted from the light-emitting end of the light-emitting rod body 220. A surface of the curved surface portion array 223 facing the inside of the uniform light rod body 220 is plated with a reflective film for reflecting light. The curved surface array 223 is provided with a plurality of compound eyes or cylinders extending in the optical path direction.
由于所述曲面部阵列223表面是曲面且镀设反射膜，光束在所述曲面部阵列223表面发生反射，反射的方向由所述曲面部阵列223的曲率和光束的入射角决定。光束经过曲面反射后光束的传输方向发生改变，反射的次数增多。在所述匀光棒体220同等长度和横截面积的情况下，反射的次数越多，匀光效果越好，光斑分布的均匀性就越好。Since the surface of the curved surface portion array 223 is curved and the reflective film is plated, the light beam is reflected on the surface of the curved surface portion array 223, and the direction of the reflection is determined by the curvature of the curved surface portion array 223 and the incident angle of the light beam. After the beam is reflected by the curved surface, the direction of the beam changes, and the number of reflections increases. In the case of the equal length and cross-sectional area of the homogenizing rod body 220, the more the number of reflections, the better the uniformity effect, and the better the uniformity of the spot distribution.
另外，第二实施例与第一实施例相同的是，所述匀光棒体220包括所述入光面221，并且所述入光面221为散射面，提高了所述匀光棒体220的出光均匀度，避免了另外添加的散射部件与所述匀光棒体220之间存在间隙导致所述间隙进入灰尘从而烧坏所述匀光装置现象的发生，延长了所述匀光装置及采用所述匀光装置的光源系统及投影设备的使用寿命。In addition, the second embodiment is the same as the first embodiment, the light-emitting rod body 220 includes the light-incident surface 221, and the light-incident surface 221 is a scattering surface, and the uniform light rod body 220 is improved. The uniformity of light emission avoids the occurrence of a gap between the additionally added scattering member and the homogenizing rod body 220, causing the gap to enter dust to burn out the phenomenon of the homogenizing device, and prolonging the homogenizing device and The life of the light source system and the projection device using the light homogenizing device.
以上所述仅为本实用新型的实施方式，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本实用新型的专利保护范围内。The above is only the embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the utility model and the drawings, or directly or indirectly applied to other The related technical fields are all included in the scope of patent protection of the present invention.
Claims (10)
- 一种匀光装置，其特征在于，所述匀光装置包括匀光棒体，所述匀光棒体的相对两端中的其中一端形成有入光面，所述入光面为散射面，用于对入射至所述入光面的光束进行散射。A light homogenizing device, comprising: a light homogenizing rod body, wherein one end of the opposite ends of the light homogenizing rod body is formed with a light incident surface, and the light incident surface is a scattering surface, For scattering a light beam incident on the light incident surface.
- 如权利要求1所述的匀光装置，其特征在于，所述入光面为经粗糙化处理后形成的漫散射面。The light homogenizing device according to claim 1, wherein the light incident surface is a diffuse scattering surface formed by roughening.
- 如权利要求2所述的匀光装置，其特征在于，所述入光面分布有多个用于对光束进行散射的凸起/凹陷。The light homogenizing device according to claim 2, wherein said light incident surface is distributed with a plurality of protrusions/recesses for scattering the light beam.
- 如权利要求1所述的匀光装置，其特征在于，所述匀光棒体为实心结构。The light homogenizing device of claim 1 wherein said homogenizing rod body is a solid structure.
- 如权利要求4所述的匀光装置，其特征在于，所述匀光棒体位于所述相对两端之间的部位的外表面形成有曲面部阵列，所述曲面部阵列面向所述匀光棒体外部的表面镀设有用于对光进行反射的反射膜。The light homogenizing device according to claim 4, wherein an outer surface of the portion of the light homogenizing rod located between the opposite ends is formed with an array of curved portions, the curved portion array facing the uniform light The surface of the outside of the rod is plated with a reflective film for reflecting light.
- 如权利要求1所述的匀光装置，其特征在于，所述匀光棒体为一端封闭另一端开口的筒状结构，所述入光面设置于所述匀光棒体的封闭端，外部光线从所述入光面入射到所述匀光棒体内，并从所述匀光棒体的开口端出射。The light homogenizing device according to claim 1, wherein the light-emitting rod body is a cylindrical structure having one end closed to the other end, and the light-incident surface is disposed at a closed end of the light-emitting rod body, and the outside Light is incident from the light incident surface into the light homogenizing rod body and exits from the open end of the light homogenizing rod body.
- 如权利要求6所述的匀光装置，其特征在于，所述匀光棒体位于所述相对两端之间的部位的内表面形成有曲面部阵列，所述曲面部阵列面向所述匀光棒体内部的表面镀设有用于对光进行反射的反射膜。The light homogenizing device according to claim 6, wherein an inner surface of the portion of the light homogenizing rod located between the opposite ends is formed with an array of curved portions, the curved portion array facing the uniform light The surface inside the rod is plated with a reflective film for reflecting light.
- 如权利要求5或7所述的匀光装置，其特征在于，所述曲面部阵列设置有沿光路方向延伸的多个复眼或柱面体。The light homogenizing device according to claim 5 or 7, wherein the curved surface portion array is provided with a plurality of compound eyes or cylindrical bodies extending in the optical path direction.
- 一种光源系统，其特征在于，所述光源系统包括发光体及如权利要求1-8任意一项所述的匀光装置，所述发光体发出的光束自所述入光面入射至所述匀光装置，经所述匀光装置匀光后出射。A light source system, comprising: an illuminator and a light homogenizing device according to any one of claims 1-8, wherein a light beam emitted from the illuminant is incident from the light incident surface to the The light homogenizing device is homogenized by the homogenizing device and then emitted.
- 一种投影设备，其特征在于，所述投影设备应用如权利要求 1-8任意一项所述的匀光装置。A projection apparatus, characterized in that the projection apparatus uses the light homogenizing apparatus according to any one of claims 1-8.
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| CN201720895688.3 | 2017-07-21 | ||
| CN201720895688.3U CN207067431U (en) | 2017-07-21 | 2017-07-21 | Dodging device, light-source system and projector equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765934A (en) * | 1995-08-04 | 1998-06-16 | Mitsubishi Denki Kabushiki Kaisha | Projection type display |
| CN104820289A (en) * | 2014-12-13 | 2015-08-05 | 深圳市科曼医疗设备有限公司 | Integral rod, dodging device, light source alignment device, projector and operation lamp |
| CN104865785A (en) * | 2015-06-04 | 2015-08-26 | 中国科学技术大学 | Laser projection light source for achieving uniform no-speckle illumination |
| CN105511083A (en) * | 2014-10-15 | 2016-04-20 | 深圳市绎立锐光科技开发有限公司 | Light homogenizing structure, manufacturing method thereof and light homogenizing system |
| CN106773480A (en) * | 2016-12-19 | 2017-05-31 | 海信集团有限公司 | A kind of optical tunnel and illuminator |
-
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- 2017-07-21 CN CN201720895688.3U patent/CN207067431U/en active Active
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765934A (en) * | 1995-08-04 | 1998-06-16 | Mitsubishi Denki Kabushiki Kaisha | Projection type display |
| CN105511083A (en) * | 2014-10-15 | 2016-04-20 | 深圳市绎立锐光科技开发有限公司 | Light homogenizing structure, manufacturing method thereof and light homogenizing system |
| CN104820289A (en) * | 2014-12-13 | 2015-08-05 | 深圳市科曼医疗设备有限公司 | Integral rod, dodging device, light source alignment device, projector and operation lamp |
| CN104865785A (en) * | 2015-06-04 | 2015-08-26 | 中国科学技术大学 | Laser projection light source for achieving uniform no-speckle illumination |
| CN106773480A (en) * | 2016-12-19 | 2017-05-31 | 海信集团有限公司 | A kind of optical tunnel and illuminator |
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