WO2017193779A1 - 色轮、光源系统及投影装置 - Google Patents

色轮、光源系统及投影装置 Download PDF

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Publication number
WO2017193779A1
WO2017193779A1 PCT/CN2017/081144 CN2017081144W WO2017193779A1 WO 2017193779 A1 WO2017193779 A1 WO 2017193779A1 CN 2017081144 W CN2017081144 W CN 2017081144W WO 2017193779 A1 WO2017193779 A1 WO 2017193779A1
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WO
WIPO (PCT)
Prior art keywords
color wheel
heat dissipating
substrate body
fluorescent layer
substrate
Prior art date
Application number
PCT/CN2017/081144
Other languages
English (en)
French (fr)
Inventor
林伟
郭祖强
谭亮
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.)
Filing date
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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 WO2017193779A1 publication Critical patent/WO2017193779A1/zh

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/18Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/16Cooling; Preventing overheating
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings

Definitions

  • the utility model relates to the technical field of illumination and display, in particular to a color wheel and a light source system and a projection device applying the color wheel.
  • the color wheel is widely used in the fields of laser light source illumination, projection, optical illumination and optical storage.
  • the fluorescent color wheel can usually convert the excitation light of the light source through the excitation phosphor layer to generate wavelengths, which are excited by high brightness and different wavelengths of the excitation light. Light can also directly penetrate the excitation light for imaging, and is widely used in the technical field of producing white light and monochromatic light because of high efficiency and low cost.
  • the light beam is irradiated to the color wheel, part of the light energy is converted into heat energy.
  • the color wheel is usually in a closed environment. If the heat is not released in time, the heat on the color wheel is accumulated, so that the color wheel cannot be normal. Work, and the life is reduced, even when the color wheel is burned.
  • the color wheel structure in the prior art is as shown in FIG. 1 , and includes a substrate 1 and a fluorescent layer 2 , and the light beam hits the fluorescent layer 2 , and the excited light can directly penetrate the fluorescent layer or pass through multiple sets of reflecting devices (not As shown in the figure), returning to the substrate 1 of the color wheel, since the thermal conductivity of the substrate 1 is low and no components for heat dissipation are provided, it is difficult to ensure the service life of the color wheel and the quality of the device to which the color wheel is applied.
  • the main purpose of the utility model is to provide a color wheel, which aims to improve the heat dissipation performance of the color wheel without changing the normal operation of the color wheel.
  • the present invention provides a color wheel comprising a fluorescent layer and a substrate fixedly connected to the fluorescent layer, the substrate comprising a heat dissipating portion and a light transmitting portion fixedly connected to the heat dissipating portion, the heat dissipating The portion is spaced apart from the phosphor layer, and the light transmissive portion is located at a gap between the phosphor layer and the heat dissipating portion.
  • the substrate further includes a substrate body, the substrate body is fixed to an outer side of the light transmitting portion, the heat radiating portion and the outer side of the substrate body are both circular, and the fluorescent layer is a ring. And being fixed to the substrate body, wherein the fluorescent layer, the heat dissipating portion and the substrate body are concentrically arranged.
  • the fluorescent layer is fixed to a surface of the substrate body, the outer diameter of the fluorescent layer is the same as the outer diameter of the substrate body, and the heat dissipating portion is convex on the surface of the light transmitting portion, The outer diameter of the heat dissipation portion is smaller than the inner diameter of the fluorescent layer.
  • a central portion of the transparent portion is provided with a mounting hole, and an inner diameter of the fluorescent layer is fixed to an outer side of the substrate body, and the heat dissipating portion is fixed to the mounting hole of the transparent portion.
  • the rib is further provided on the light transmitting portion, and the rib connects the heat radiating portion and the fluorescent layer.
  • the rib is provided with a plurality of the ribs spaced apart, and each of the ribs extends radially outward to a side edge of the fluorescent layer on a side of the heat dissipating portion.
  • the fluorescent layer is provided with a plurality of splicing blocks, and the ribs are disposed at a boundary corresponding to a plurality of the splicing blocks.
  • the heat dissipating portion and the rib material are both aluminum or aluminum alloy, and the two are integrally formed;
  • the substrate body is made of aluminum or aluminum alloy, the substrate body and the heat dissipating portion and the rib
  • the substrate body is made of the same material as the light transmitting portion, and the substrate body is integrally formed with the light transmitting portion.
  • Another object of the present invention is to provide a light source system comprising a color wheel, the color wheel being the color wheel described above.
  • the technical solution of the present invention rapidly dissipates heat accumulated on the substrate and the fluorescent layer to the outside by providing a heat dissipating portion on the substrate, thereby reducing the temperature during operation of the color wheel.
  • the heat dissipating portion is spaced apart from the phosphor layer, and a light transmitting portion is further provided in the gap therebetween, so that the excited light can be transmitted through the substrate after being reflected, thereby realizing a wavelength conversion function.
  • the combination of the two can improve the heat dissipation performance of the color wheel and extend the service life of the color wheel without affecting the normal operation of the color wheel.
  • FIG. 1 is a schematic structural view of a prior art color wheel
  • FIG. 2 is a schematic structural view of an embodiment of a color wheel of the present invention.
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 4 is a cross-sectional view showing another embodiment of the color wheel of the present invention.
  • Figure 5 is a schematic structural view of still another embodiment of the color wheel of the present invention.
  • Figure 6 is a front elevational view of still another embodiment of the color wheel of the present invention.
  • the terms "connected”, “fixed” and the like should be understood broadly, unless otherwise clearly defined and limited.
  • “fixed” may be a fixed connection, a detachable connection, or an integral; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the utility model provides a color wheel, which is applied to a light source system and a projection device.
  • FIG. 1 is a schematic structural view of a color wheel of the prior art
  • FIG. 2 is a schematic structural view of an embodiment of a color wheel of the present invention
  • FIG. 3 is a cross-sectional view taken along line AA of FIG. 2
  • FIG. 5 is a cross-sectional view showing another embodiment of the color wheel of the present invention
  • FIG. 6 is a front view of still another embodiment of the color wheel of the present invention.
  • the color wheel of the embodiment of the present invention includes a fluorescent layer 20 and a substrate 10 fixedly connected to the fluorescent layer 20 .
  • the substrate 10 includes a heat dissipating portion 12 and a light transmission fixedly connected to the heat dissipating portion 12 .
  • the heat radiating portion 12 is spaced apart from the fluorescent layer 20, and the light transmitting portion 11 is located at a gap between the fluorescent layer 20 and the heat radiating portion 12.
  • Color wheel is used in light source systems, lighting systems, projection devices, etc., such as DLP (Digital Light Processor, digital light processor) projector, DLP is DMD (Digital Micromirror Device, digital micromirror device) As a light valve imaging device, a device that projects an image by adjusting reflected light.
  • the color wheel is typically disposed between a light source (not shown) of the DLP and an image output window (not shown).
  • the light transmitting portion 11 is a transparent plate which can be made of glass or sapphire material and has light transmitting property for penetrating the excited monochromatic light, but the thermal conductivity is not high.
  • the fluorescent layer 20 has different monochromatic light corresponding to excitation due to the difference in the internal phosphor material.
  • the corresponding monochromatic light can be excited.
  • the excitation light may be directly transmitted through the fluorescent layer 20 or the substrate 10; a reflective layer (not shown) may be disposed on the inner surface of the substrate 10 facing away from the fluorescent layer 20, and a reflection may be provided on the side of the fluorescent layer 20 facing away from the substrate 10.
  • the device transmits the excited light transmitted to the substrate 10 through the fluorescent layer 20 to the reflecting device through the reflective layer, and then projects the light onto the transparent portion 11 of the substrate 10 and penetrates the transparent portion 11 through the reflecting device. It is then irradiated onto a DMD (not shown) and finally projected onto a large screen by an optical lens (not shown).
  • the former is a transmissive color wheel and the latter is a reflective color wheel.
  • the excitation light may be directly transmitted through the fluorescent layer 20 or the substrate 10, and then a reflecting device may be disposed on the side where the excited light is transmitted through the light, so that the fluorescent layer 20 is excited.
  • the generated excited light is incident on the reflecting device after being transmitted through the fluorescent layer 20 or the substrate 10, and then the light is projected onto the light transmitting portion 11 of the substrate 10 through the reflecting device and penetrates the light transmitting portion 11 to enter the subsequent optical path.
  • the shape of the light transmitting portion can be set according to actual needs.
  • the light transmitting portion can transmit the excited light or the excitation light.
  • the heat dissipating portion 12 is a high thermal conductive material, and the high thermal conductive material absorbs heat quickly, and the heat dissipating is also fast, so that a large amount of heat of the fluorescent layer 20 and the substrate 10 can be quickly transmitted to the air, thereby reducing the temperature rise of the color wheel and improving The heat dissipation performance of the color wheel.
  • high thermal conductivity materials such as metals, ceramics, and thermal silicas.
  • the heat dissipating portion 12 By disposing the heat dissipating portion 12 on the substrate 10, the heat accumulated on the substrate 10 and the phosphor layer 20 is quickly conducted through the heat dissipating portion 12 and is radiated to the outside, thereby reducing the temperature at which the color wheel operates. At the same time, the heat dissipating portion 12 is spaced apart from the phosphor layer 20, and a light transmitting portion 11 is further disposed between the two portions, so that the laser light generated by the excitation phosphor layer 20 can continue to pass through the substrate 10 and enter the subsequent optical path to realize the wavelength. Conversion function.
  • the structure can improve the heat dissipation performance of the color wheel and prolong the service life of the color wheel without affecting the normal operation of the color wheel.
  • the substrate 10 further includes a substrate body 13 .
  • the substrate body 13 is fixed to the outer side of the transparent portion 11 , and the outer side of the heat dissipation portion 12 and the substrate body 13 are circular and fluorescent.
  • the layer 20 is annular and fixed to the substrate body, and the phosphor layer 20, the heat dissipation portion 12, and the substrate body 13 are concentrically arranged.
  • the substrate body 13 and the heat dissipation portion 12 may also have a square plate shape or other shapes.
  • Some of the color wheel needs to be mounted on a driving member (not shown), and is driven by the driving member to rotate at a high speed.
  • the hole should be punched in the center of the color wheel, and the heat dissipating portion 12 is disposed at the center of the substrate 10, that is, on the substrate 10.
  • the outer shape of the fluorescent layer 20, the heat dissipating portion 12, and the substrate body 13 is circular and concentrically mounted, which is advantageous for receiving excitation light at any angle and uniformly transmitting the excited light, resulting in high picture quality.
  • the phosphor layer 20 is fixed to a surface of the substrate body 13.
  • the outer diameter of the phosphor layer 20 is the same as the outer diameter of the substrate body 13.
  • the heat dissipating portion 12 protrudes from the surface of the light transmitting portion 11, and the heat dissipating portion 12 The outer diameter is smaller than the inner diameter of the fluorescent layer 20.
  • the phosphor layer 20 and the heat dissipation portion 12 may be fixed to the same surface of the substrate 10 or may be fixed to both surfaces of the substrate 10, respectively.
  • the fixing method can be pasted with silicone.
  • the heat dissipating portion 12 is protruded from the surface of the light transmitting portion 11 to dissipate heat between the heat dissipating portion 12 and the substrate body 13 with a maximum contact area, which is advantageous for improving heat dissipation performance.
  • the outer diameter of the heat dissipating portion 12 is smaller than the inner diameter of the phosphor layer 20 in order to ensure that the excited light can be transmitted through the substrate 10 without affecting the normal operation of the color wheel.
  • a mounting hole 111 is defined in the center of the transparent portion 11 .
  • the inner diameter of the fluorescent layer 20 is fixed to the outer side of the substrate body 13 , and the heat dissipating portion 12 is fixed to the mounting hole 111 of the transparent portion 11 .
  • the mounting hole 111 needs to match the shape of the heat dissipating portion 12, and the heat dissipating portion 12 has a circular outer shape, and the mounting hole 111 has a circular shape.
  • the fluorescent layer 20 is fixed to the outer side of the substrate body 13 and the heat dissipating portion 12 is mounted on the mounting hole 111.
  • the mounting manner may be a paste or a plug-in form, and the structure may be used as a reflective color wheel or a transmission. Color wheel.
  • the color wheel further includes a rib 30 , and the rib 30 is disposed on the transparent portion 11 , and the rib 30 connects the heat dissipation portion 12 and the fluorescent layer 20 .
  • the heat radiating portion 12 is directly connected to the light transmitting portion 11, and the heat on the substrate 10 can be quickly dispersed.
  • the ribs 30 are disposed to be conductively dispersed, and the ribs 30 are metal members. The heat is quickly transmitted to the heat dissipating portion 12 and diffused through the heat dissipating portion 12, which is advantageous for reducing the heat of the phosphor layer 20 and controlling the temperature rise of the color wheel.
  • the shape of the ribs 30 may be a sheet shape, a column shape or the like.
  • the ribs 30 are provided in plurality, and the plurality of ribs 30 are spaced apart, and each of the ribs 30 extends radially outward of the side of the heat dissipating portion 12 to the inside of the fluorescent layer 20 . Side.
  • the arrangement of the plurality of ribs 30 allows the heat of the fluorescent layer 20 to be conducted to the heat dissipating portion 12 more quickly, so that the heat dissipating effect is better.
  • the ribs 30 are disposed on the side of the heat dissipating portion 12 and extend radially outward to the inner side of the phosphor layer 20.
  • the ribs 30 can be connected at the shortest distance to increase the heat dissipation rate, which is beneficial to better control the color.
  • the temperature of the wheel rose.
  • the direction in which the ribs 30 extend may also be in other directions along the heat dissipation portion 12.
  • the fluorescent layer 20 is provided with a plurality of splicing blocks 21, and the ribs 30 are disposed at the intersection of the corresponding plurality of splicing blocks 21.
  • the phosphor layer 20 is provided with a plurality of splicing blocks 21, and the phosphor materials are divided into a plurality of types, and the plurality of splicing blocks 21 can be excited to generate a plurality of different colors.
  • this stitching can be connected using a paste method.
  • the splicing block 21 can also be a transparent segment, and the excitation light is directly transmitted through.
  • the outer contour of each of the splicing blocks 21 is fan-shaped, and the boundary between the two splicing blocks 21 is a spoke.
  • the excitation light will continue to change color during the spokes, eventually resulting in a picture on the projection device that is not desired to be seen.
  • the ribs 30 are disposed at the positions of the corresponding spokes.
  • the projections are projected to the substrate 10 by the reflecting device at the position of the ribs 30, and the ribs 30 cannot transmit light, thereby avoiding occurrence. A picture of poor quality.
  • the heat dissipating portion 12 and the rib 30 are made of aluminum or aluminum alloy, and the two are integrally formed; the substrate body 13 is made of aluminum or aluminum alloy, and the substrate body 13 and the heat dissipating portion 12 and the ribs are formed.
  • the strip 30 is integrally formed; or the substrate body 13 is made of the same material as the light transmitting portion 11, and the substrate body 13 and the light transmitting portion 11 are integrally formed.
  • the heat dissipation portion 12 and the ribs 30 may be made of the same metal, or may be different metals or different heat conductive materials. In this embodiment, as shown in FIG. 5, both of them are of the same kind of metal, and the laser integral molding or other processing methods can be selected, which is convenient for production and is advantageous for reducing the production cost.
  • the substrate body 13 may be made of other metals.
  • the substrate body 13 is made of aluminum or aluminum alloy.
  • the excitation light is excited at the phosphor layer 20 at this time.
  • the path of the light is reflected back to the reflective color wheel, and the transmission is imaged through the light transmitting portion 11 through the reflecting device.
  • the structural substrate body 13 is integrally formed with the heat dissipation portion 12 and the ribs 30, which can be easily produced and cost-saving.
  • the substrate body 13 can also be used as a heat dissipating component for heat dissipation, which further improves the heat dissipation performance of the color wheel.
  • the material of the substrate body 13 may be the same as that of the transparent portion 11 and is a transmissive color wheel.
  • the excited light is transmitted directly to the phosphor layer 20 and the substrate body 13.
  • the reflective surface of the substrate body 13 facing away from the fluorescent layer 20 can be applied as a reflective color wheel, which is simple and convenient, and the integral molding of the substrate body 13 and the light transmitting portion 11 is also advantageous for processing.
  • Another object of the present invention is to provide a light source system (not shown) including a color wheel, the color wheel being the color wheel described above. Since the color wheel of the light source system adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are not repeated herein.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

一种色轮、光源系统及投影装置,色轮包括荧光层(20)及与荧光层(20)固定连接的基板(10),基板(10)包括散热部(12)及与散热部(12)固定连接的透光部(11),散热部(12)与荧光层(20)间隔设置,透光部(11)位于荧光层(20)与散热部(12)之间的间隙处。

Description

色轮、光源系统及投影装置 技术领域
本实用新型涉及照明及显示技术领域,特别涉及一种色轮及应用所述色轮的光源系统及投影装置。
背景技术
色轮在激光光源照明、投影、光学照排及光存储等领域应用广泛,荧光色轮通常可以将光源的激发光通过激发荧光层进行波长转换,产生出高亮度且不同于激发光波长的受激发光,也可以使激发光直接穿透过进行成像,且因高效、低成本,而被广泛用于产生白光及单色光的技术领域。然而,当光束照射到色轮时,部分光能会转化为热能,色轮通常处于密闭环境中,如果热量不及时散发出去,则导致色轮上的热量越积越多,使得色轮无法正常工作,并且寿命降低,严重时甚至烧毁色轮。
技术问题
现有技术中的色轮结构如图1所示,包括基板1及荧光层2,光束打到荧光层2上,激发出的光可以直接穿透荧光层,也可以通过多组反射装置(未图示)返回至色轮的基板1,由于基板1导热系数低,又未设置有利于散热的部件,很难保证色轮的使用寿命和应用色轮的设备的质量。
技术解决方案
本实用新型的主要目的是提供一种色轮,旨在不改变色轮正常工作的前提下,提高色轮的散热性能。
为实现上述目的,本实用新型提出一种色轮,包括荧光层及与所述荧光层固定连接的基板,所述基板包括散热部及与所述散热部固定连接的透光部,所述散热部与所述荧光层间隔设置,所述透光部位于所述荧光层与所述散热部之间的间隙处。
优选地,所述基板还包括基板本体,所述基板本体固接于所述透光部外侧边,所述散热部与所述基板本体外侧边均为圆形,所述荧光层呈环状并与所述基板本体固接,所述荧光层、所述散热部及所述基板本体三者同心设置。
优选地,所述荧光层固接于所述基板本体的一表面,所述荧光层的外径与所述基板本体的外径相同,所述散热部凸于所述透光部表面,所述散热部的外径小于所述荧光层的内径。
优选地,所述透光部中心开设有安装孔,所述荧光层的内径固接于所述基板本体的外侧边,所述散热部固接于所述透光部的安装孔。
优选地,还包括筋条,所述筋条设于所述透光部,所述筋条连接所述散热部与所述荧光层。
优选地,所述筋条设有多个,多个所述筋条间隔分布,每个所述筋条于所述散热部的侧边沿径向向外延伸至所述荧光层的内侧边。
优选地,所述荧光层设有多个拼接块,所述筋条设置于对应多个所述拼接块的交界处。
优选地,所述散热部与所述筋条材质均为铝或铝合金,两者一体成型;所述基板本体材质为铝或铝合金,所述基板本体与所述散热部及所述筋条一体成型;或所述基板本体与所述透光部材质相同,所述基板本体与所述透光部一体成型。
本实用新型的另一目的在于提出一种光源系统,包括色轮,所述色轮为上述的色轮。
本实用新型的又一目的在于提出一种投影装置,包括色轮,所述色轮为上述的色轮。
有益效果
本实用新型技术方案通过在基板上设置散热部,将积聚于基板与荧光层上的热量快速传导并散发出到外界,降低色轮工作时的温度。同时,散热部与荧光层间隔设置且于两者间隙还设有透光部,可以使激发的光经反射后能继续透过基板,实现波长转换功能。两者结合,可以在不影响色轮正常工作的情况下,提高色轮的散热性能,延长色轮的使用寿命。
附图说明
为了更清楚地说明本实用新型实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本实用新型的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图示出的结构获得其他的附图。
图1为现有技术色轮的结构示意图;
图2为本实用新型色轮一实施例的结构示意图;
图3为图2中沿A-A线的剖视图;
图4为本实用新型色轮另一实施例的剖视图;
图5为本实用新型色轮又一实施例的结构示意图;
图6为本实用新型色轮再一实施例的正视图。
附图标号说明:
标号 名称 标号 名称
1 基板 20 荧光层
2 荧光层 21 拼接块
10 基板 12 散热部
11 透光部 13 基板本体
111 安装孔 30 筋条
本实用新型目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。
本发明的最佳实施方式
下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本实用新型的一部分实施例,而不是全部的实施例。基于本实用新型中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本实用新型保护的范围。
需要说明,本实用新型实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等,如果该特定姿态发生改变时,则该方向性指示也相应地随之改变。
在本实用新型中,除非另有明确的规定和限定,术语“连接”、“固定”等应做广义理解,例如,“固定”可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本实用新型中的具体含义。
另外,在本实用新型中如涉及“第一”、“第二”等的描述仅用于描述目的,而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外,各个实施例之间的技术方案可以相互结合,但是必须是以本领域普通技术人员能够实现为基础,当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在,也不在本实用新型要求的保护范围之内。
本实用新型提出一种色轮,该色轮应用于光源系统及投影装置。
参照图1至图6,图1为现有技术色轮的结构示意图;图2为本实用新型色轮一实施例的结构示意图;图3为图2中沿A-A线的剖视图;图4为本实用新型色轮另一实施例的剖视图;图5为本实用新型色轮又一实施例的结构示意图;图6为本实用新型色轮再一实施例的正视图。
请结合参照图2和图3,本实用新型一实施例的色轮,包括荧光层20及与荧光层20固定连接的基板10,基板10包括散热部12及与散热部12固定连接的透光部11,散热部12与荧光层20间隔设置,透光部11位于荧光层20与散热部12之间的间隙处。
色轮应用于光源系统、照明系统及投影装置等,例如DLP(Digital Light Processor,数码光处理器)投影机,DLP是以DMD(Digital Micromirror Device,数字微镜装置)芯片作为光阀成像器件,通过调节反射光实现投射图像的设备。一般将色轮设置于DLP的光源(未图示)与图像输出窗口(未图示)之间。本实施例中,透光部11为透明板,其可由玻璃或蓝宝石材质制成,具有透光性能,用于使激发的单色光进行穿透,但是导热系数不高。荧光层20因其内部荧光粉材料的不同,对应激发的单色光也不同,当光源照射到荧光层20时,可以激发出所对应的单色光。受激发光可以通过荧光层20或基板10直接透射出;也可以在基板10背离荧光层20的内表面设置反射层(未图示),再在荧光层20背离基板10的一侧设有反射装置,使通过荧光层20透射到基板10上的受激发光经过反射层反射到反射装置上,再通过反射装置,使光投射到基板10的透光部11上并穿透透光部11,然后再照射到DMD(未图示)上,最后通过光学透镜(未图示)投射到大屏幕上。前者为透射式色轮,后者为反射式色轮。另外,对于所述的透射式色轮,也可以是受激发光通过荧光层20或基板10直接透射出后,再在受激发光透射出光的一侧设有反射装置,使激发荧光层20所产生的受激发光在透射出荧光层20或基板10之后入射到反射装置上,再通过反射装置,使光投射到基板10的透光部11上并穿透透光部11进入后续光路。需要说明的是,透光部的形状可以根据实际需要而设定,另外,透光部可以透射受激发光也可以透射激发光,由于基板1的导热性能不高,无法及时将热量散发出去,从而会出现色轮损坏的情况。故本实施例中,散热部12为高导热材料,高导热材料吸热快,散热也快,可以快速将荧光层20与基板10的大量热量传导至空气中,降低色轮的温升,提高色轮的散热性能。当然高导热材料有很多种,例如金属类、陶瓷类及导热硅胶类等等。
本实用新型通过在基板10上设置散热部12,将积聚于基板10与荧光层20上的热量通过散热部12快速传导并散发至外界,降低色轮工作时的温度。同时,散热部12与荧光层20间隔设置且于两者间隙还设有透光部11,可以使激发荧光层20所产生的受激光经反射后能继续透过基板10进入后续光路,实现波长转换功能。该结构可以在不影响色轮正常工作的情况下,提高色轮的散热性能,延长色轮的使用寿命。
具体地,请继续参照图2和图3,基板10还包括基板本体13,基板本体13固接于透光部11外侧边,散热部12与基板本体13外侧边均为圆形,荧光层20呈环状并与基板本体固接,荧光层20、散热部12及基板本体13三者同心设置。
当然,基板本体13与散热部12还可以呈方板状或其他形状。有些色轮需安装于驱动件(未图示)上,由驱动件驱动进行高速旋转,此时应于色轮中心打孔,散热部12设于基板10的中心时,即位于基板10上用于安装驱动件的孔的外周。将荧光层20、散热部12及基板本体13的外形设为圆形并同心安装,有利于旋转任何角度都可以接收激发光,并对激发出的光进行均匀透射,产生的画面质量高。同时也有利于散热部12均匀分散热量,不致于使色轮某一局部受热过高而发生损坏。
具体地,请参阅图3,荧光层20固接于基板本体13的一表面,荧光层20的外径与基板本体13的外径相同,散热部12凸于透光部11表面,散热部12的外径小于荧光层20的内径。
荧光层20与散热部12均可固接于基板10的同一表面,也可以分别固接于基板10的两个表面。固接方式可以采用硅胶粘贴。散热部12凸设于透光部11表面,可以使散热部12与基板本体13以最大的接触面积进行散热,有利于提高散热性能。散热部12外径小于荧光层20的内径,是为了保证受激发的光可以透过基板10进行显示,不影响色轮的正常工作。
进一步地,请参照图4,透光部11中心开设有安装孔111,荧光层20的内径固接于基板本体13的外侧边,散热部12固接于透光部11的安装孔111。
本实施例中,安装孔111需与散热部12的形状相匹配,散热部12外形为圆形,则安装孔111的形状为圆形。将荧光层20固接于基板本体13的外侧边,并将散热部12安装于安装孔111,安装方式可以是粘贴或者插接形式等,该结构可以作为反射式色轮,也可以为透射式色轮。通过将基板10的导热系数低的材料换成导热系数高的散热部12,通过散热部12快速将热量散发出去,提高散热速度。且色轮的厚度减小,散热面积增大,有利于散热。
进一步地,请参阅图5,该色轮还包括筋条30,筋条30设于透光部11,筋条30连接散热部12与荧光层20。
散热部12直接与透光部11相连,可以很快分散基板10上的热量。对于荧光层20的热量,本实施例中,除了荧光层20自身的散热与辐射传给散热部12进行散热之外,还设置筋条30对其进行传导分散,筋条30为金属件,将热量快速传递到散热部12上,并通过散热部12发散出去,有利于降低荧光层20的热量,控制色轮的温升。筋条30的形状可以为片状、柱状或者其他。
优选地,请参照图5和图6,筋条30设有多个,多个筋条30间隔分布,每个筋条30于散热部12的侧边沿径向向外延伸至荧光层20的内侧边。
多个筋条30的设置,可以使荧光层20的热量更加快速地传导至散热部12,使散热效果更好。将筋条30设于散热部12侧边沿径向向外延伸至荧光层20的内侧边,可以使筋条30以最短的距离进行连接,提高热量的散发速度,有利于更好地控制色轮温升。当然,筋条30的延伸方向还可以是沿散热部12的其他方向。当荧光层20、基板本体13及散热部12处于同一平面时,需要在透光部11上进行开槽,用于筋条30的安装。
进一步地,请参照图6,荧光层20设有多个拼接块21,筋条30设置于对应多个拼接块21的交界处。
荧光层20内的荧光粉材料不同,则对其进行激发产生的单色光不同。本实施例中,当需要有多种单色光的投射时,就将荧光层20设置多个拼接块21,将荧光粉材料分为多种,多个拼接块21可以被激发产生多种不同的单色光,这种拼接可以使用粘贴方式连接。当然,拼接块21也可以为透明段,激发光直接透射穿出。每个拼接块21外轮廓均为扇形,两个拼接块21之间的交界处为轮辐,激发光在轮辐期间会发生持续变色,最终导致在投影装置上呈现出不被希望看到的画面。为避免此现象发生,将筋条30设置于对应轮辐的位置,当光照射后,通过反射装置投射到基板10时正好处于筋条30位置,该筋条30无法使光透过,进而避免出现质量不好的画面。
具体地,请参照图4和图5,散热部12与筋条30材质均为铝或铝合金,两者一体成型;基板本体13材质为铝或铝合金,基板本体13与散热部12及筋条30一体成型;或基板本体13与透光部11材质相同,基板本体13与透光部11一体成型。
当然,导热性能好的材料还有其他种类。综合各方面因素,金属为较合适的选择,尤其铝及铝合金得到了广泛地应用,因其导热性能好,相对成本低,并且自身材料质量轻,具有很大的实用性。当然,散热部12与筋条30的材质可以为相同的金属,也可以为不同金属或者不同的导热材料。本实施例中,如图5,两者皆为同类金属,可以选择激光一体成型或者其他加工方式,方便生产,有利于降低生产成本。
基板本体13材质还可以为其他金属,本实施例中,基板本体13为铝或铝合金,当荧光层20固接于基板本体13表面时,此时受激发光于荧光层20处迎着激发光的路径反射回去,为反射式色轮,通过反射装置再通过透光部11进行透射成像。该结构基板本体13与散热部12及筋条30一体成型,可以方便生产,节约成本。同时基板本体13也可作为散热的部件进行散热,进一步提高了色轮的散热性能。当然,基板本体13材质也可与透光部11材质相同,为透射式色轮,受激发光直接于荧光层20与基板本体13透射出。同时也可以于基板本体13背离荧光层20的表面涂覆反射层,作为反射式色轮使用,简单方便,基板本体13与透光部11一体成型也利于加工。
本实用新型的另一目的在于提出一种光源系统(未图示),包括色轮,所述色轮为上述的色轮。由于光源系统的色轮采用了上述所有实施例的全部技术方案,因此至少具有上述实施例的技术方案所带来的所有有益效果,在此不再一一赘述。
本实用新型的又一目的在于提出一种投影装置(未图示),包括色轮,所述色轮为上述的色轮。由于投影装置的色轮采用了上述所有实施例的全部技术方案,因此至少具有上述实施例的技术方案所带来的所有有益效果,在此不再一一赘述。
以上所述仅为本实用新型的优选实施例,并非因此限制本实用新型的专利范围,凡是在本实用新型的发明构思下,利用本实用新型说明书及附图内容所作的等效结构变换,或直接/间接运用在其他相关的技术领域均包括在本实用新型的专利保护范围内。

Claims (10)

1、一种色轮,其特征在于,包括荧光层及与所述荧光层固定连接的基板,所述基板包括散热部及与所述散热部固定连接的透光部,所述散热部与所述荧光层间隔设置,所述透光部位于所述荧光层与所述散热部之间的间隙处。
2、如权利要求1所述的色轮,其特征在于,所述基板还包括基板本体,所述基板本体固接于所述透光部外侧边,所述散热部与所述基板本体外侧边均为圆形,所述荧光层呈环状并与所述基板本体固接,所述荧光层、所述散热部及所述基板本体三者同心设置。
3、如权利要求2所述的色轮,其特征在于,所述荧光层固接于所述基板本体的一表面,所述荧光层的外径与所述基板本体的外径相同,所述散热部凸于所述透光部表面,所述散热部的外径小于所述荧光层的内径。
4、如权利要求2所述的色轮,其特征在于,所述透光部中心开设有安装孔,所述荧光层的内径固接于所述基板本体的外侧边,所述散热部固接于所述透光部的安装孔。
5、如权利要求3或4所述的色轮,其特征在于,还包括筋条,所述筋条设于所述透光部,所述筋条连接所述散热部与所述荧光层。
6、如权利要求5所述的色轮,其特征在于,所述筋条设有多个,多个所述筋条间隔分布,每个所述筋条于所述散热部的侧边沿径向向外延伸至所述荧光层的内侧边。
7、如权利要求6所述的色轮,其特征在于,所述荧光层设有多个拼接块,所述筋条设置于对应多个所述拼接块的交界处。
8、如权利要求6或7所述的色轮,其特征在于,所述散热部与所述筋条材质均为铝或铝合金,两者一体成型;所述基板本体材质为铝或铝合金,所述基板本体与所述散热部及所述筋条一体成型;或所述基板本体与所述透光部材质相同,所述基板本体与所述透光部一体成型。
9、一种光源系统,其特征在于,包括色轮,所述色轮为权利要求1至8任一所述的色轮。
10、一种投影装置,其特征在于,包括色轮,所述色轮为权利要求1至8任一所述的色轮。
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