WO2019015297A1 - Dispositif d'homogénéisation de la lumière, système de source de lumière et dispositif de projection - Google Patents

Dispositif d'homogénéisation de la lumière, système de source de lumière et dispositif de projection Download PDF

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Publication number
WO2019015297A1
WO2019015297A1 PCT/CN2018/074754 CN2018074754W WO2019015297A1 WO 2019015297 A1 WO2019015297 A1 WO 2019015297A1 CN 2018074754 W CN2018074754 W CN 2018074754W WO 2019015297 A1 WO2019015297 A1 WO 2019015297A1
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WO
WIPO (PCT)
Prior art keywords
light
homogenizing
rod body
incident
closed cavity
Prior art date
Application number
PCT/CN2018/074754
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English (en)
Chinese (zh)
Inventor
侯海雄
唐晓峰
李屹
Original Assignee
深圳市光峰光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 深圳市光峰光电技术有限公司 filed Critical 深圳市光峰光电技术有限公司
Publication of WO2019015297A1 publication Critical patent/WO2019015297A1/fr

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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.
  • the homogenizing rod used on the market usually has a diffusing piece in front of the light-input end, which makes the laser spot from the light-shaping rod more uniform, so that the laser spot on the fluorescent color wheel is more uniform, and finally The excitation efficiency of the fluorescent color wheel is higher, that is, the optical power output by 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 includes a closed cavity, and a scattering element and a light homogenizing rod body disposed in the closed cavity body, wherein opposite ends of the light homogenizing rod body are respectively light entrance ends and a light-emitting end, the closed cavity includes a light-incident side and a light-emitting side respectively capable of transmitting light and corresponding to the light-incident end and the light-emitting end of the light-smoothing rod body, and the scattering element is disposed in the closed cavity The light side is between the light incident end of the light homogenizing rod body.
  • a light transmitting film is disposed on both the light incident side and the light exiting side of the closed cavity.
  • the light transmissive film is an antireflection film.
  • the homogenizing rod body is a hollow structure.
  • the inner surface of the portion of the light-dancing rod body between the light-incident end and the light-emitting end is formed with an array of curved surfaces, and the surface of the curved surface portion is plated to the surface of the light-receiving rod body.
  • the homogenizing rod body has a solid structure.
  • an outer surface of the portion of the light-dancing rod body between the light-incident end and the light-emitting end is formed with an array of curved surfaces, and the surface of the curved surface portion is plated to the surface of the outside of the light-emitting rod body.
  • the curved surface array is a compound eye or a cylindrical body extending in the optical path direction.
  • a light source system comprising: an illuminator and a light homogenizing device according to any one of the preceding claims, wherein a light beam emitted from the illuminant is incident from a light incident side of the closed cavity, and is sequentially scattered by the scattering element. After the homogenization of the homogenizing rod body, the light is emitted from the light emitting side of the closed cavity.
  • a projection apparatus comprising the light homogenizing device of any of the above.
  • the present invention provides the light homogenizing device, the light source system, and the projection device.
  • the light homogenizing device provided in the embodiment provides the scattering element and the light homogenizing rod body in the closed cavity. Therefore, the dust can be effectively dustproof, and the scattering element and the light homogenizing rod body can be directly contacted with the outside, and the service life of the light homogenizing device and the light source system and the projection device using the light homogenizing device is prolonged.
  • FIG. 1 is a side view showing a structure of a light homogenizing device according to an embodiment of the present invention.
  • FIG. 2 is a schematic perspective view of a homogenizing rod body according to another embodiment of the present invention.
  • FIG. 1 is a schematic side view of a light homogenizing device 100 according to an embodiment of the present invention.
  • the light homogenizing device 100 includes a closed cavity 150 and a scattering element 140 and a light homogenizing rod 120 disposed in the closed cavity 150.
  • the closed cavity 150 includes a light incident side 151 and a light emitting side. 153, the opposite ends of the light-emitting rod body 120 are respectively the light-incident end 121 and the light-emitting end 122, and the light-incident side 151 and the light-emitting side 153 are respectively connected to the light-incident end 121 and the light-emitting end 122.
  • the scattering element 140 is disposed between the light incident side 151 and the light incident end 121.
  • the material of the light homogenizing rod 120 is a light transmissive medium, including but not limited to glass and plastic.
  • the light-emitting rod body 120 may be a solid structure, and an outer surface of the portion between the light-incident end 121 and the light-emitting end 122 of the light-dancing rod 120 is provided with a reflective film to be incident. Light reflects.
  • the light-emitting rod body 120 may also be a hollow structure, and the light-emitting end 122 and the light-incident end 121 both form an opening.
  • An inner surface of a portion between the light incident end 121 and the light exit end 122 of the light homogenizing rod 120 is provided with a reflective film to reflect incident light.
  • the scattering element 140 is a light transmissive medium layer doped with scattering particles or diffusion particles, or the scattering element 140 is a sheet of a diffusion sheet material.
  • the scattering element 140 is disposed along the optical axis direction and perpendicular to the optical axis, and the longitudinal direction of the uniform light rod body 120 is the optical axis direction.
  • the light incident side 151 and the light exiting side 153 of the closed cavity 150 can transmit light.
  • the light-incident side 151 and the light-emitting side 153 are provided with a transparent film, such as an anti-reflection film (also referred to as an anti-reflection film), and the thickness of the transparent film can be designed as a single layer or two according to actual needs. Above the layer.
  • the incident light is not focused on the light transmissive film, and the optical power density on the light transmissive film is greatly reduced, thereby reducing the risk of the light transmissive film being burned out.
  • the light incident side 151 and the light exiting side 153 can also be provided with other optical films capable of transmitting light.
  • the light homogenizing device 100 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 illuminator and the light homogenizing device 100, and a light beam emitted from the illuminating body is incident on the scattering element 140 from the light incident side 151, and is homogenized by the homogenizing rod body 120.
  • the light exiting side 153 of the closed cavity 150 exits.
  • the projection device may apply the light homogenizing device 100 to perform light homogenization, or apply a light source system using the light homogenizing device 100.
  • the illuminant can be a direct illuminant (such as a laser diode) or an indirect illuminant that emits fluorescence.
  • the light homogenizing device 100 provided in this embodiment disposes the scattering element 140 and the light homogenizing rod body 120 in the closed cavity 150, so that the dustproof member can be effectively dustproof, and the scattering element 140 and the scattering element are avoided.
  • the homogenizing rod body 120 directly contacts the outside world, prolonging the service life of the light homogenizing device 100 and the light source system and the projection device using the homogenizing device 100.
  • FIG. 2 is a schematic perspective structural view of a light homogenizing rod 220 according to another embodiment of the present invention.
  • the light-sharing device (not shown) in this embodiment is compared with the light-smoothing device 100.
  • the main difference is that the light-receiving rod 220 is located at the light-incident end 221 and the light-emitting end (not shown).
  • a curved surface portion array 223 is formed on the outer surface of the portion between the portions.
  • the curved surface array 223 is provided with a plurality of cylindrical bodies extending in the optical path direction.
  • a surface of the curved surface portion array 223 facing the outside of the uniform light rod body 220 is plated with a reflective film for reflecting light.
  • 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 cross-section of the light-incident end 221 and the light-emitting end of the light-dancing rod 220 is polygonal, and its size is similar to that of the external light source.
  • the cross-sectional area of the light incident end 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 homogenizing rod body 220 in the light homogenizing device is a hollow structure, and the light-incident end 221 and the light-emitting end (not shown) form an opening.
  • the illuminating rod body 220 is disposed on the inner surface between the light incident end 221 and the light exiting end with a curved surface array 223.
  • the curved surface array 223 is provided with a plurality of compound eyes or cylinders extending in the optical path direction.
  • 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 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 present embodiment is the same as the first embodiment in that the light homogenizing device is disposed in the closed cavity with the scattering element and the light homogenizing rod 220, thereby effectively preventing dust and avoiding the scattering element. Direct contact with the outside of the homogenizing rod body prolongs the service life of the light homogenizing device and the light source system and the projection device using the homogenizing device.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un dispositif d'homogénéisation de la lumière (100), un système de source de lumière et un dispositif de projection. Le dispositif d'homogénéisation de la lumière (100) comprend une cavité fermée (150) ainsi qu'un élément de diffusion (140) et une tige d'homogénéisation de la lumière (120) qui sont disposés dans la cavité fermée (150) ; deux extrémités opposées de la tige d'homogénéisation de la lumière (120) sont respectivement une extrémité d'incidence de lumière (121) et une extrémité d'émission de lumière (122) ; la cavité fermée (150) comprend un côté d'incidence de lumière (151) et un côté d'émission de lumière (153) qui laissent passer la lumière et qui correspondent respectivement à l'extrémité d'incidence de lumière (121) et à l'extrémité d'émission de lumière (122) de la tige d'homogénéisation de la lumière (120) ; l'élément de diffusion (140) est situé sur l'extrémité d'incidence de lumière (121). Dans le dispositif d'homogénéisation de la lumière (100), l'élément de diffusion (140) et la tige d'homogénéisation de la lumière (120) sont disposés dans la cavité fermée (150), de façon à efficacement prévenir la poussière et à empêcher l'élément de diffusion (140) et la tige d'homogénéisation de la lumière (120) d'être en contact direct avec l'extérieur, prolongeant ainsi la durée de vie du dispositif d'homogénéisation de la lumière (100), du système de source de lumière et du dispositif de projection qui utilisent le dispositif d'homogénéisation de la lumière (100).
PCT/CN2018/074754 2017-07-21 2018-01-31 Dispositif d'homogénéisation de la lumière, système de source de lumière et dispositif de projection WO2019015297A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720895176.7 2017-07-21
CN201720895176.7U CN207067644U (zh) 2017-07-21 2017-07-21 匀光装置、光源系统及投影设备

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WO2019015297A1 true WO2019015297A1 (fr) 2019-01-24

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110231265B (zh) * 2018-03-05 2022-02-11 深圳光峰科技股份有限公司 多孔荧光陶瓷气孔率检测装置及其检测方法
CN110376833B (zh) * 2018-04-12 2022-03-25 深圳光峰科技股份有限公司 光源系统和投影系统
CN109814270A (zh) * 2019-03-25 2019-05-28 中国科学院上海光学精密机械研究所 激光器输出光空间相干性抑制装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5765934A (en) * 1995-08-04 1998-06-16 Mitsubishi Denki Kabushiki Kaisha Projection type display
CN102662294A (zh) * 2012-05-15 2012-09-12 中国科学技术大学 一种基于电光偏转散斑抑制的激光显示系统及显示方法
CN202886723U (zh) * 2012-10-17 2013-04-17 深圳市绎立锐光科技开发有限公司 发光装置及相关投影系统
CN104834095A (zh) * 2014-10-17 2015-08-12 深圳市科曼医疗设备有限公司 基于多颜色光束的匀光装置及光学系统
CN204989735U (zh) * 2015-06-04 2016-01-20 中国科学技术大学 一种用于实现均匀无散斑照明的激光投影光源
CN106773480A (zh) * 2016-12-19 2017-05-31 海信集团有限公司 一种匀光棒及照明系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5765934A (en) * 1995-08-04 1998-06-16 Mitsubishi Denki Kabushiki Kaisha Projection type display
CN102662294A (zh) * 2012-05-15 2012-09-12 中国科学技术大学 一种基于电光偏转散斑抑制的激光显示系统及显示方法
CN202886723U (zh) * 2012-10-17 2013-04-17 深圳市绎立锐光科技开发有限公司 发光装置及相关投影系统
CN104834095A (zh) * 2014-10-17 2015-08-12 深圳市科曼医疗设备有限公司 基于多颜色光束的匀光装置及光学系统
CN204989735U (zh) * 2015-06-04 2016-01-20 中国科学技术大学 一种用于实现均匀无散斑照明的激光投影光源
CN106773480A (zh) * 2016-12-19 2017-05-31 海信集团有限公司 一种匀光棒及照明系统

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