WO2016173526A1 - 波长转化装置、光源系统和投影设备 - Google Patents

波长转化装置、光源系统和投影设备 Download PDF

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Publication number
WO2016173526A1
WO2016173526A1 PCT/CN2016/080641 CN2016080641W WO2016173526A1 WO 2016173526 A1 WO2016173526 A1 WO 2016173526A1 CN 2016080641 W CN2016080641 W CN 2016080641W WO 2016173526 A1 WO2016173526 A1 WO 2016173526A1
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Prior art keywords
layer
wavelength conversion
conversion device
metallization layer
reflective ceramic
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French (fr)
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田梓峰
许颜正
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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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 technical field of illumination and display, in particular to a wavelength conversion device. It also relates to a light source system to which the wavelength conversion device is applied and a projection apparatus to which the light source system is applied.
  • LD Laser Diode
  • the laser emits excitation light to excite the wavelength conversion material to obtain visible light of various colors, and the technology is increasingly used in illumination and display.
  • This technology has the advantages of high efficiency, low energy consumption, low cost and long life, and is an ideal alternative to existing white or monochromatic light sources.
  • the reflective wavelength conversion device has high efficiency and is widely used in illumination and display devices.
  • the main structure of the reflective wavelength conversion device is a color wheel, which comprises a light-emitting layer, a light-reflecting layer and a heat-conducting substrate which are sequentially stacked.
  • the existing color wheel is mainly divided into two types: one is a specular reflection structure, that is, the organic silica phosphor layer is directly cured and bonded to the mirror aluminum metal substrate, the organosilicon phosphor layer is a light emitting layer, and the mirror aluminum metal substrate is simultaneously The function of the reflective layer and the thermally conductive substrate; the second is a diffuse reflective layer structure in which the diffuse reflection layer and the fluorescent layer are directly sintered on the thermally conductive substrate.
  • the high reflectivity of the reflective layer and the high thermal conductivity of the thermally conductive substrate are advantages, but the fluorescent layer is made of an organic binder sealing phosphor, and the thermal conductivity and resistance of the fluorescent layer are improved.
  • the temperature is low, and the reflective film of the mirror aluminum metal plate has poor weather resistance, and it is easy to be vulcanized and oxidized at a high temperature, so that the reflection reliability is low.
  • the thermal stability of the reflectance is much higher than that of the specular reflection structure, but since the reflection in the diffuse reflection layer is mainly scattering particles, scattering particles In order to achieve sufficient reflectivity of the diffuse reflection layer, it is required to be laminated to a certain thickness, and the presence of the glass powder causes the thickness of the diffuse reflection layer to reach a desired reflectance to further increase, which causes the heat generated by the light-emitting layer to be difficult to diffuse through the diffuse reflection layer. Go out.
  • an object of the present invention is to provide a wavelength conversion device capable of simultaneously having high reflectance and high thermal stability, thereby satisfying efficient and stable light emission in the case of high-power illumination.
  • Another object of the present invention is to provide a light source system to which the wavelength conversion device is applied and a projection apparatus to which the light source system is applied.
  • the present invention provides the following technical solutions:
  • a wavelength conversion device comprising a light-emitting layer, a reflective ceramic layer and a metallization layer; the light-emitting layer being disposed on a surface of one side of the reflective ceramic layer, the metallization layer being disposed on a surface of the reflective ceramic layer And the metallization layer does not overlap with the light emitting layer.
  • the metallization layer is disposed on a surface of a side of the reflective ceramic layer opposite to the light-emitting layer, and an area of the metallization layer is smaller than the reflective ceramic The area of the side surface of the layer.
  • the area of the metallization layer is 1/36 to 1/4 of the area of the surface of the side of the reflective ceramic layer on which it is located.
  • the metallization layer comprises a first metallization layer and a second metallization layer, the first metallization layer and the light-emitting layer being located on the same side of the reflective ceramic layer
  • the second metallization layer is on a surface of the other side of the reflective ceramic layer.
  • the first metallization layer and the second metallization layer are symmetrically arranged with respect to the reflective ceramic layer.
  • an area of a surface of the reflective ceramic layer on which one side of the second metallization layer is disposed is equal to or larger than an area of the second metallization layer.
  • a metal plating layer provided on an outer surface of the metallization layer is further included.
  • a metal heat dissipation substrate is further included, and the metal heat dissipation substrate is fixedly connected to the metal plating layer.
  • the metal plating layer is a nickel plating layer or a nickel gold double plating layer.
  • the reflective ceramic layer is an alumina ceramic, a zirconia ceramic or an alumina zirconia composite ceramic.
  • the reflective ceramic layer is an annular disk or a disk structure
  • the light emitting layer is a circular ring or a fan ring shape.
  • the present invention also provides a light source system comprising an illuminator and a wavelength conversion device, wherein the wavelength conversion device is the wavelength conversion device according to any of the above.
  • the present invention also provides a projection apparatus comprising a light source system, the light source system being the light source system described above.
  • the wavelength conversion device provided by the utility model comprises a light-emitting layer, a reflective ceramic layer and a metallization layer, wherein the light-emitting layer is disposed on a surface of one side of the reflective ceramic layer, and the metallization layer is disposed on the surface of the reflective ceramic layer and the light-emitting layer Do not overlap.
  • the specular reflection layer in which the specular reflection structure exists does not oxidize at a high temperature, and therefore, a part of the surface of the reflective ceramic layer is used. The reflection can maintain a high reflectance and can efficiently and stably emit light.
  • a metallization layer is disposed on a part of the surface of the reflective ceramic layer, on the one hand, the thermal conductivity of the reflective ceramic layer is improved, and the heat dissipation can be quickly performed under the condition of high-power illumination, thereby ensuring efficient and stable light output, and on the other hand, improving The structural strength of the reflective ceramic layer.
  • the light source system provided by the present invention adopts the wavelength conversion device in the present application, it can efficiently and stably emit light.
  • the projection device employs the light source system of the present application, thereby ensuring the stability of the projected light.
  • 1 is a top plan view of a wavelength conversion device according to an embodiment of the present invention.
  • Figure 2 is a schematic cross-sectional view of A-A in Figure 1;
  • Figure 3 is a partially enlarged schematic view of the dotted line frame in Figure 2;
  • FIG. 4 is a partially enlarged cross-sectional view showing a second wavelength conversion device according to an embodiment of the present invention.
  • FIG. 5 is a partially enlarged cross-sectional view showing a third wavelength conversion device according to an embodiment of the present invention.
  • 1 is a light-emitting layer
  • 2 is a reflective ceramic layer
  • 3 is a metallization layer
  • 301 is a first metallization layer
  • 302 It is a second metallization layer
  • 4 is a metal plating layer
  • 5 is a metal heat dissipation substrate.
  • the core of the present invention is to provide a wavelength conversion device which has high reflectivity and high thermal stability, and can maintain efficient and stable light output in the case of high power illumination.
  • the utility model also provides a light source system applying the wavelength conversion device and a projection device applying the same.
  • FIG. 1 Please refer to Figure 1 - Figure 5, where the structures in Figure 3 - Figure 5 are enlarged views in the dotted line in Figure 2.
  • figure 1 And Figure 2 The shape of the wavelength conversion device is given in a circular shape.
  • the shape of the wavelength conversion device may be other structures, which are not specifically limited herein.
  • the focus of the present invention is on the layer profile arrangement of the wavelength conversion device. Structure, therefore, as long as the arrangement of the layer profiles, other wavelength conversion devices of different shapes belong to the protection scope of the present invention.
  • Embodiments of the present invention provide a wavelength conversion device including a light emitting layer 1 , a reflective ceramic layer 2 and a metallization layer 3; wherein, the reflective ceramic layer 2 is an annular disk structure, as shown in FIG.
  • the light-emitting layer 1 is disposed on the reflective ceramic layer 2
  • the luminescent layer 1 may be sintered on the surface of the reflective ceramic layer 2, and the luminescent layer 1 is circular or fan-shaped; using the reflective ceramic layer 2
  • the surface of the disk surface is directly reflected.
  • the surface for reflection may be the surface of the reflective ceramic layer 2 that is in contact with the light-emitting layer 1. It can be seen that the surface of the reflective ceramic layer 2 can be directly reflected; the metallization layer 3 is disposed on the reflective ceramic layer.
  • the material of the metallization layer 3 is preferably copper, and may be other materials such as aluminum, and may be in the reflective ceramic.
  • Layer 2 The surface of the surface is provided on the surface of the reflective ceramic layer 2 by direct copper plating, vacuum brazing or vacuum diffusion soldering.
  • the above wavelength conversion device employs a reflective ceramic layer 2, and the reflective ceramic layer 2 is preferably white, white reflective ceramic layer 2 It does not interfere with the color of the light. Of course, when it is necessary to obtain light of a specific color, the reflective ceramic layer 2 can also adopt other colors. Due to the reflective ceramic layer 2 Compared with the mirror aluminum metal substrate, it has high thermal stability and high reflectivity, and the mirror aluminum metal plate does not oxidize at a high temperature, so that the light can be efficiently and stably discharged.
  • the thermal conductivity of the reflective ceramic layer 2 is increased, so that the heat generated by the luminescent layer 1 can be rapidly diffused and emitted in time without the luminescent layer 1 Producing a high temperature effect, further maintaining efficient and stable light output;
  • the metallization layer 3 solves the reflective ceramic layer 2
  • the problem of poor toughness improves structural strength and thermal shock resistance, so it can be directly used as a substrate, and the structure is simpler and more reliable.
  • the embodiment of the present invention provides an arrangement form of the metallization layer 3, and the metallization layer 3 is disposed on the reflective ceramic layer 2
  • the area of the metallization layer 3 is smaller than the area of the side surface of the reflective ceramic layer 2. That is, a metallization layer 3 is provided on the one-side surface of the reflective ceramic layer 2, due to the metallization layer.
  • the coefficient of thermal expansion of 3 is much larger than the coefficient of thermal expansion of the reflective ceramic layer 2, and the metallized layer 3 of the reflective ceramic layer 2 has a large thermal stress, and during the further high-temperature sintering of the light-emitting layer 1, the ceramic layer 2 is reflected.
  • the area of the metallization layer 3 is smaller than the area of the single-sided surface of the reflective ceramic layer 2, so that the thermal stress generated by the difference in thermal expansion rate can be weakened, thereby improving the reflective ceramic layer 2 Seismic performance and structural stability.
  • the area of the metallization layer 3 is provided on the reflective ceramic layer 2 with the metallization layer 3
  • the area of the metallization layer 3 is preferably the area of the surface of the side of the reflective ceramic layer 2 on which the metallization layer 3 is disposed. 1/36 ⁇ 1/4, more preferably 1/16 ⁇ 1/9.
  • the area and shape of the luminescent layer 1 are not limited herein, and the area of the luminescent layer 1 may be less than or equal to the reflective ceramic layer 2 The area of the surface on one side of the light-emitting layer 1 is provided.
  • the embodiment of the present invention provides another arrangement of the metallization layer 3, the metallization layer 3 A first metallization layer 301 and a second metallization layer 302 are disposed. The first metallization layer 301 and the light-emitting layer 1 are located on the same side surface of the reflective ceramic layer 2, and the second metallization layer 302 Then, it is on the surface (the surface opposite to the light-emitting layer 1) on the other side of the reflective ceramic layer 2.
  • a metallization layer 3 is disposed on both sides of the reflective ceramic layer 2, and the ceramic layer 2 is reflected.
  • the thermal stresses on both sides of the surface may partially cancel each other, thereby further improving the structural stability and seismic performance of the reflective ceramic layer 2, and the metallized layer 3 is less prone to poor adhesion and reflective ceramic layer 2 The case of warpage deformation.
  • the first metallization layer 301 and the second metallization layer 302 are opposite to the reflective ceramic layer 2
  • the symmetrical arrangement, in particular, the first metallization layer 301 and the second metallization layer 302 are both annular structures, and the shapes of the two are the same, respectively disposed on the two sides of the reflective ceramic layer 2, wherein the luminescent layer 1 It is a ring-shaped structure and is embedded between the two rings of the first metallization layer 301.
  • This arrangement makes the thermal stresses on the surfaces of the reflective ceramic layer 2 symmetrical, thereby further canceling each other and improving the structural stability.
  • first metallization layer 301 and the second metallization layer 302 may also be asymmetrically arranged, as shown in FIG. 5, to reflect the ceramic layer 2
  • the annular disk structure is taken as an example.
  • the area of the second metallization layer 302 is smaller than or equal to the area of the single-sided disk surface of the reflective ceramic layer 2.
  • FIG. 5 shows that the area of the second metallization layer 302 is equal to that of the reflective ceramic layer 2.
  • the second metallization layer 302 covers the single-sided disk surface of the reflective ceramic layer 2, and the structure of the first metallization layer 301 is the same as that of the previous embodiment, at this time, the second Metallization layer
  • the area of 302 is larger than the area of the first metallization layer 301; of course, the area of the second metallization layer 302 may be smaller or larger than the first metallization layer 301.
  • the area can also achieve the effect of weakening thermal stress and improving structural stability.
  • this embodiment provides another wavelength conversion device structure, as shown in FIG. Also shown is a metal plating 4 disposed on the outer side surface of the metallization layer 3.
  • the metal plating layer 4 covers the outer surface of the metallization layer 3 to prevent oxidation of the metallization layer 3, and to the metallization layer 3 Protect.
  • the wavelength conversion device in this embodiment further includes a metal heat dissipation substrate 5
  • the metal heat sink substrate 5 is fixedly connected to the metal plating layer 4, and is usually soldered.
  • the heat dissipation area is increased by the metal heat dissipation substrate 5, thereby accelerating the heat dissipation of the wavelength conversion device.
  • This embodiment optimizes the metal plating layer 4, and the metal plating layer 4 For the nickel plating layer or the nickel gold double plating layer, it is possible to plate a single metal or to plate a plurality of metals as long as it can protect the metallization layer 3 from oxidation.
  • the reflective ceramic layer 2 The material is preferably alumina ceramic, zirconia ceramic or alumina zirconia composite ceramic. These materials have a diffuse surface and high thermal stability and high reflectivity, making them ideal as reflective ceramic layers 2 .
  • Metallization layer in the above embodiment 3 It can be fabricated by using graphic technology to produce metallization layer patterns of different areas and shapes to meet the size requirements of various wavelength conversion devices.
  • the luminescent layer is sintered on the surface thereof. (Light-emitting glass layer), compared with the heat-conductive substrate made of luminescent ceramic in the prior art, the luminescent glass layer is easier to fabricate wavelength conversion devices of various sizes and shapes, such as rings and sector rings, and the cost is lower. It is easier to achieve mass production. Especially easy to mass production thickness A thin glass luminescent glass layer in the range of 0.01 to 0.5 mm, and in this thickness range, luminescent ceramic processing is difficult, especially for large-sized thin films.
  • the embodiment of the present invention further provides a light source system comprising an illuminator and a wavelength conversion device, wherein the wavelength conversion device is the wavelength conversion device described in all of the above embodiments. Since the wavelength conversion device in the present application is employed, the light source system can emit light more efficiently and stably.
  • the present invention also provides a projection apparatus comprising a light source system, wherein the light source system is the light source system described in the present application.
  • the light source system has the advantage of efficient and stable illumination. The specific reasons are not described here.

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

Abstract

一种波长转化装置，包括发光层（1）、反射陶瓷层（2）和金属化层（3）；发光层（1）设置于反射陶瓷层（2）的一侧的表面，金属化层（3）设置在反射陶瓷层（2）上且与发光层（1）不重叠。由此提高反射陶瓷层（2）的导热率和结构强度。还提供一种应用该波长转化装置的光源系统以及应用该光源系统的投影设备。

Description

波长转化装置、光源系统和投影设备 技术领域
本实用新型涉及照明和显示技术领域，特别涉及一种波长转化装置。还涉及一种应用该波长转化装置的光源系统以及应用该光源系统的投影设备。
背景技术
随着显示和照明技术的发展，原始的卤素灯泡作为光源越来越不能满足显示和照明领域对高功率和高亮度的需求。采用固态光源如 LD （ Laser Diode ，激光二极管）发出的激发光以激发波长转换材料的方法能够获得各种颜色的可见光，该技术越来越多地应用于照明和显示中。这种技术具有效率高、能耗少、成本低、寿命长的优势，是现有白光或者单色光光源的理想替代方案。
目前，反射式波长转换装置的效率高，被广泛应用于照明和显示装置中，反射式波长转换装置的主要结构形式为色轮，其包括依次层叠设置的发光层、反光层和导热基板。现有的色轮主要分为两种类型：一种是镜面反射结构，即将有机硅胶荧光粉层直接固化粘接到镜面铝金属基板上，有机硅荧光粉层为发光层，镜面铝金属基板同时起反光层和导热基板的作用；第二种是漫反射层结构，即在导热基板上依次直接烧结漫反射层和荧光层。
 技术问题
对于上述的镜面反射结构，反光层的反射率高以及导热基板的热导率高是其优势，但是荧光层是由有机粘接剂封接荧光粉制成的，荧光层的热导率和耐温性都较低，且镜面铝金属板的反射膜的耐候性能差，容易在高温下出现硫化氧化，使得反射可靠性较低。
而对于上述的漫反射层结构，一般由散射颗粒和玻璃粉组成，其反射率的热稳定性远高于镜面反射结构，但是，由于漫反射层中起反射作用的主要为散射颗粒，散射颗粒要使漫反射层达到足够的反射率，需层叠至一定厚度，而玻璃粉的存在导致漫反射层达到所需反射率的厚度进一步增加，这将导致发光层产生的热量难以通过漫反射层发散出去。此外，由于玻璃粉的导热能力差，导致热量聚集，进一步使得发光层产生的热量无法发散，从而降低了光源可靠性并同时降低了发光层的发光效率，导致光源效率低。
综上所述，如何使波长转化装置同时具有高反射率和高热稳定性，从而满足在大功率发光的情况下保持高效稳定的出光，成为了本领域技术人员亟待解决的问题。
 技术解决方案
有鉴于此，本实用新型的目的在于提供一种波长转化装置，能够同时具有高反射率和高热稳定性，从而满足在大功率发光的情况下保持高效稳定的出光。
本实用新型的另一目的在于提供一种应用该波长转化装置的光源系统以及应用该光源系统的投影设备。
为达到上述目的，本实用新型提供以下技术方案：
一种波长转化装置，包括发光层、反射陶瓷层和金属化层；所述发光层设置于所述反射陶瓷层的一侧的表面，所述金属化层设置在所述反射陶瓷层的表面上，且所述金属化层与所述发光层不重叠。
优选地，在上述的波长转化装置中，所述金属化层设置在所述反射陶瓷层的与所述发光层相对的一侧的表面上，且所述金属化层的面积小于所述反射陶瓷层的该侧表面的面积。
优选地，在上述的波长转化装置中，所述金属化层的面积是其所在的反射陶瓷层的该侧的表面的面积的1/36~1/4。
优选地，在上述的波长转化装置中，所述金属化层包括第一金属化层和第二金属化层，所述第一金属化层与所述发光层位于所述反射陶瓷层的同侧表面上，所述第二金属化层位于所述反射陶瓷层的另一侧的表面上。
优选地，在上述的波长转化装置中，所述第一金属化层和所述第二金属化层相对所述反射陶瓷层对称布置。
优选地，在上述的波长转化装置中，所述反射陶瓷层的设置有所述第二金属化层的一侧的表面的面积大于等于所述第二金属化层的面积。
优选地，在上述的波长转化装置中，还包括设置在所述金属化层的外侧表面的金属镀层。
优选地，在上述的波长转化装置中，还包括金属散热基板，所述金属散热基板与所述金属镀层固定连接。
优选地，在上述的波长转化装置中，所述金属镀层为镀镍层或镍金双镀层。
优选地，在上述的波长转化装置中，所述反射陶瓷层为氧化铝陶瓷、氧化锆陶瓷或氧化铝氧化锆复合陶瓷。
优选地，在上述的波长转化装置中，所述反射陶瓷层为环形盘或圆盘结构，所述发光层为圆环形或扇环形。
本实用新型还提供了一种光源系统，包括发光器和波长转化装置，所述波长转化装置为以上任一项所述的波长转化装置。
本实用新型还提供了一种投影设备，包括光源系统，所述光源系统为上述所述的光源系统。
 有益效果
与现有技术相比，本实用新型的有益效果是：
本实用新型提供的波长转化装置中，包括发光层、反射陶瓷层和金属化层，发光层设置于反射陶瓷层的一侧的表面，金属化层设置在反射陶瓷层的表面上且与发光层不重叠。通过发射陶瓷层的表面进行反射，由于反射陶瓷层本身具有较好的热稳定性，不会出现镜面反射结构存在的镜面反射层在高温下氧化的情况，因此，利用反射陶瓷层的部分表面进行反射，可以保持较高的反射率，能够高效稳定地出光。同时，在反射陶瓷层的部分表面设置金属化层，一方面提高了反射陶瓷层的导热率，能够在大功率发光的情况下，快速的散热，保证了高效稳定地出光，另一方面提高了反射陶瓷层的结构强度。
本实用新型提供的光源系统由于采用了本申请中的波长转化装置，因此能够高效稳定的发光。投影设备采用了本申请中的光源系统，因此能够保证投影的光线的稳定性。
 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，还可以根据提供的附图获得其他的附图。
图 1 为本实用新型实施例提供的一种波长转转装置的俯视示意图；
图 2 为图 1 中 A-A 截面示意图；
图 3 为图 2 中的虚线框内局部放大示意图；
图 4 为本实用新型实施例提供的第二种波长转化装置的局部放大剖视示意图；
图 5 本实用新型实施例提供的第三种波长转化装置的局部放大剖视示意图。
其中， 1 为发光层、 2 为反射陶瓷层、 3 为金属化层、 301 为第一金属化层、 302 为第二金属化层、 4 为金属镀层、 5 为金属散热基板。
 本发明的最佳实施方式
本实用新型的核心是提供了一种波长转化装置，同时具有高反射率和高热稳定性，在大功率发光的情况下，能够保持高效稳定地出光。
本实用新型还提供了一种应用该波长转化装置的光源系统以及应用该光源系统的投影设备。
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做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。
请参考图 1- 图 5 ，其中，图 3- 图 5 中的结构均为图 2 中虚线框内的放大示意图。图 1 和图 2 给出了一种波长转化装置的形状，形状为圆环形，当然波长转化装置的形状还可以是其它结构，在此不做具体限定，本实用新型的重点在于波长转化装置的层剖面的布置结构，因此，只要层剖面的布置结构，其它形状不同的波长转化装置均属于本实用新型的保护范围。本实用新型实施例提供了一种波长转化装置，包括发光层 1 、反射陶瓷层 2 和金属化层 3 ；其中，反射陶瓷层 2 为环形盘结构，如图 1 所示，也可以为圆盘结构；发光层 1 设置于反射陶瓷层 2 的一侧的表面上，发光层 1 可烧结在反射陶瓷层 2 的表面，发光层 1 为圆环形或扇环形；利用反射陶瓷层 2 的盘面直接进行反射，用于反射的表面可以是反射陶瓷层 2 上与发光层 1 接触的表面，可见，反射陶瓷层 2 的表面可直接进行反射；金属化层 3 设置在反射陶瓷层 2 的表面上，且位于发光层 1 之外的表面上，即金属化层 3 和发光层 1 不重叠，金属化层 3 的材质优选为铜，也可以是铝等其它材料，可在反射陶瓷层 2 的表面采用直接敷铜法、真空钎焊或真空扩散钎焊等方式将金属化层 3 设置于反射陶瓷层 2 的表面。
上述波长转化装置采用了反射陶瓷层 2 ，反射陶瓷层 2 优选为白色，白色的反射陶瓷层 2 不会对光线的色彩产生干扰，当然，当需要获得特定颜色的光线时，反射陶瓷层 2 也可以采用其它颜色。由于反射陶瓷层 2 相比于镜面铝金属基板具有高热稳定性，反射率也较高，不会出现镜面铝金属板在高温下氧化的情况，从而能够保持高效稳定地出光。同时，在反射陶瓷层 2 的部分表面设置金属化层 3 ，一方面提高了反射陶瓷层 2 的热导率，使发光层 1 产生的热量能够快速地扩散并及时散发出去，不会对发光层 1 产生高温影响，进一步保持了高效稳定地出光；另一方面，金属化层 3 解决了反射陶瓷层 2 的韧性较差的问题，提高了结构强度，抗热震性能得以提高，因而可以直接作为基板，结构更简单可靠。
如图 3 所示，本实用新型实施例提供了一种金属化层 3 的布置形式，金属化层 3 设置在反射陶瓷层 2 的与发光层 1 相对的一侧的表面上，且金属化层 3 的面积小于反射陶瓷层 2 的该侧表面的面积。即在反射陶瓷层 2 的单侧表面设置金属化层 3 ，由于金属化层 3 的热膨胀率远大于反射陶瓷层 2 的热膨胀率，反射陶瓷层 2 制备金属化层 3 存在较大热应力，并且在进一步高温烧结发光层 1 的过程中，反射陶瓷层 2 和金属化层 3 之间也会积累部分热应力，其结构应力造成金属化层 3 粘接不牢甚至反射陶瓷层 2 翘曲变形，因此，为了减弱这种影响，考虑将金属化层 3 的面积缩小，使金属化层 3 的面积小于反射陶瓷层 2 的单侧表面的面积，这样可以减弱因热膨胀率不同导致形变不同所产生的热应力，从而提高反射陶瓷层 2 的抗震性能和结构稳定性。
按照常理，金属化层 3 的面积相对反射陶瓷层 2 上设置有该金属化层 3 的一侧的表面的面积越小，则热应力越小，但是考虑到金属散热基板 5 需要和金属化层 3 焊接，金属化层 3 的面积过小导致金属散热基板 5 与金属化层 3 的焊接面积过小，其焊接强度会受到影响；与此同时，发光层 1 在激发过程的热量向金属散热基板 5 传导，过小的金属化层 3 面积会缩小传热面积，对于传热不利，因而其面积也不能太小。在本实施例中，金属化层 3 的面积优选为反射陶瓷层 2 上设置有该金属化层 3 的一侧的表面的面积的 1/36~1/4 ，更优选为 1/16~1/9 。此时，本实施例对于发光层 1 的面积和形状在此不做限定，发光层 1 的面积可以小于等于反射陶瓷层 2 上设置有该发光层 1 的一侧的表面的面积。
尽管在图 3 中采用了在反射陶瓷层的单侧设置金属化层 3 的方式，但是依然存在热应力。为了更好地消除热应力，如图 4 和图 5 所示，本实用新型实施例提供了另一种金属化层 3 的布置形式，金属化层 3 包括第一金属化层 301 和第二金属化层 302 ，第一金属化层 301 与发光层 1 位于反射陶瓷层 2 的同侧表面上，第二金属化层 302 则位于反射陶瓷层 2 的另一侧的表面（与发光层 1 相对的表面）上。即在反射陶瓷层 2 的两侧表面均设置金属化层 3 ，反射陶瓷层 2 的两侧表面存在的热应力可以部分相互抵消，从而进一步提高了反射陶瓷层 2 的结构稳定性和抗震性能，且金属化层 3 更不易发生粘接不牢和反射陶瓷层 2 翘曲变形的情况。
作为优化，如图 4 所示，第一金属化层 301 和第二金属化层 302 相对反射陶瓷层 2 对称布置，具体的，第一金属化层 301 和第二金属化层 302 均为圆环状结构，两者的形状相同，分别设置在反射陶瓷层 2 的两侧表面，其中，发光层 1 为圆环状结构，且嵌在第一金属化层 301 的两个圆环之间。这样设置可以使反射陶瓷层 2 两侧表面的热应力对称，从而进一步相互抵消，提高了其结构稳定性。
当然，第一金属化层 301 和第二金属化层 302 也可以不对称布置，如图 5 所示，以反射陶瓷层 2 为环形盘结构为例进行说明，第二金属化层 302 的面积小于等于反射陶瓷层 2 的单侧盘面的面积，图 5 给出了第二金属化层 302 的面积等于反射陶瓷层 2 的单侧盘面面积的情况，即第二金属化层 302 覆盖在反射陶瓷层 2 的单侧盘面上，而第一金属化层 301 的结构与上一实施例的结构相同，此时，第二金属化层 302 的面积大于第一金属化层 301 的面积；当然，第二金属化层 302 的的面积可以小于或者大于第一金属化层 301 的面积，同样能够达到消弱热应力，提高结构稳定性的作用。
在以上金属化层 3 布置结构的基础上，本实施例提供了另一种波长转化装置结构，如图 3- 图 5 所示，还包括设置在金属化层 3 的外侧表面的金属镀层 4 。金属镀层 4 覆盖在金属化层 3 的外侧表面，起到防止金属化层 3 氧化的作用，对金属化层 3 进行保护。当然，也可以不设置金属镀层 4 ，设置金属镀层 4 是更优选的方案。
如图 1 所示，为了加快波长转化装置的散热，本实施例中的波长转化装置还包括金属散热基板 5 ，金属散热基板 5 与金属镀层 4 固定连接，通常为焊接固定。通过金属散热基板 5 增大散热面积，从而加快波长转化装置的散热。当然，也可以不设置金属散热基板 5 ，设置金属散热基板 5 是更优选的方案。
本实施例对金属镀层 4 进行优化，金属镀层 4 为镀镍层或镍金双镀层层，即可以是电镀单种金属，也可以电镀多种金属，只要能够起到保护金属化层 3 不被氧化的作用即可。
在本实施例中，反射陶瓷层 2 的材质优选为氧化铝陶瓷、氧化锆陶瓷或氧化铝氧化锆复合陶瓷。这些材质具有漫反射作用的表面，且热稳定性高，反射率高，非常适合作为反射陶瓷层 2 。
以上实施例中的金属化层 3 可以利用图形化技术进行制作，制作出不同面积和形状的金属化层图形，满足各种波长转换装置的尺寸要求。
由于反射陶瓷层 2 可以作为承烧板，在其表面烧结发光层 1 （发光玻璃层），相对于现有技术中的由发光陶瓷制作的导热基板，发光玻璃层更容易制作各种不同大小和形状，如圆环，扇形环的波长转换装置，且成本更低，更容易实现量产化。特别是容易量产制作厚度 0.01~0.5mm 范围的薄片发光玻璃层，而在此厚度范围内，发光陶瓷加工困难，对于大尺寸薄片尤为如此。
本实用新型实施例还提供了一种光源系统，包括发光器和波长转化装置，其中，波长转化装置为以上全部实施例所描述的波长转化装置。由于采用了本申请中的波长转化装置，因此该光源系统能够更高效稳定的出光。
本实用新型还提供了一种投影设备，包括光源系统，其中，光源系统为本申请中所描述的光源系统。该光源系统具有高效稳定发光的优点。具体原因不再赘述。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本实用新型。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本实用新型的精神或范围的情况下，在其它实施例中实现。因此，本实用新型将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (13)

1 、一种波长转化装置，其特征在于，包括发光层（ 1 ）、反射陶瓷层（ 2 ）和金属化层（ 3 ）；所述发光层（ 1 ）设置于所述反射陶瓷层（ 2 ）的一侧的表面，所述金属化层（ 3 ）设置在所述反射陶瓷层（ 2 ）的表面上，且所述金属化层（ 3 ）与所述发光层（ 1 ）不重叠。
2 、根据权利要求 1 所述的波长转化装置，其特征在于，所述金属化层（ 3 ）设置在所述反射陶瓷层（ 2 ）的与所述发光层相对的一侧的表面上，且所述金属化层（ 3 ）的面积小于所述反射陶瓷层（ 2 ）的该侧表面的面积。
3 、根据权利要求 2 所述的波长转化装置，其特征在于，所述金属化层（ 3 ）的面积是其所在的所述反射陶瓷层（ 2 ）的该侧表面的面积的 1/36~1/4 。
4 、根据权利要求 1 所述的波长转化装置，其特征在于，所述金属化层（ 3 ）包括第一金属化层（ 301 ）和第二金属化层（ 302 ），所述第一金属化层（ 301 ）与所述发光层（ 1 ）位于所述反射陶瓷层（ 2 ）的同侧表面上，所述第二金属化层（ 302 ）位于所述反射陶瓷层（ 2 ）的另一侧的表面上。
5 、根据权利要求 4 所述的波长转化装置，其特征在于，所述第一金属化层（ 301 ）和所述第二金属化层（ 302 ）相对所述反射陶瓷层（ 2 ）对称布置。
6 、根据权利要求 4 所述的波长转化装置，其特征在于，所述反射陶瓷层（ 2 ）的设置有所述第二金属化层（ 302 ）的一侧的表面的面积大于等于所述第二金属化层（ 302 ）的面积。
7 、根据权利要求 1-6 任一项所述的波长转化装置，其特征在于，还包括设置在所述金属化层（ 3 ）的外侧表面的金属镀层（ 4 ）。
8 、根据权利要求 7 所述的波长转化装置，其特征在于，还包括金属散热基板（ 5 ），所述金属散热基板（ 5 ）与所述金属镀层（ 4 ）固定连接。
9 、根据权利要求 7 所述的波长转化装置，其特征在于，所述金属镀层（ 4 ）为镀镍层或镍金双镀层。
10 、根据权利要求 1 所述的波长转化装置，其特征在于，所述反射陶瓷层（ 2 ）的材质为氧化铝陶瓷、氧化锆陶瓷或氧化铝氧化锆复合陶瓷。
11 、根据权利要求 1 所述的波长转化装置，其特征在于，所述反射陶瓷层（ 2 ）为环形盘或圆盘结构，所述发光层（ 1 ）为圆环形或扇环形。
12 、一种光源系统，包括发光器和波长转化装置，其特征在于，所述波长转化装置为权利要求 1-11 任一项所述的波长转化装置。
13 、一种投影设备，包括光源系统，其特征在于，所述光源系统为权利要求 12 所述的光源系统。
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CN204694983U (zh) * 2015-04-29 2015-10-07 深圳市光峰光电技术有限公司 波长转化装置、光源系统和投影设备

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