CN217506357U - Light wave conversion wheel and light source system - Google Patents
Light wave conversion wheel and light source system Download PDFInfo
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- CN217506357U CN217506357U CN202220812230.8U CN202220812230U CN217506357U CN 217506357 U CN217506357 U CN 217506357U CN 202220812230 U CN202220812230 U CN 202220812230U CN 217506357 U CN217506357 U CN 217506357U
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Abstract
The utility model discloses a light wave conversion wheel, include: a light source; a substrate including a first surface and a second surface disposed opposite the first surface; the first surface of the substrate is provided with a plurality of subareas; the light wave conversion layer comprises a light incidence surface, and at least one partition is provided with the light wave conversion layer; a reflective structure comprising a light reflective surface, at least one of the sections being provided with the reflective structure; wherein the light reflecting surface is closer to the substrate first surface than the light incident surface. The application provides a light wave conversion wheel will light wave conversion layer with reflection configuration sets up in same base plate plane, and makes reflection configuration's light reflection surface is less than light wave conversion layer's light incident surface, and the focus that incident light falls on the speculum promptly is in out of focus state, and falls the focus on phosphor powder for the focus state, makes the facula of two places similar like this, and the even light effect of messenger is better.
Description
Technical Field
The utility model relates to a light wave conversion technology field, more specifically say, the utility model relates to a light wave conversion wheel and light source system.
Background
Recently, projection apparatuses mainly including solid-state light sources such as light-emitting diodes (LEDs) and laser diodes (laser diodes) have been in the market. Generally, the excitation light of these solid-state light sources is converted by the wavelength conversion material on the wavelength conversion module in the projection apparatus to generate converted light with different colors. Because the spectrum of the directly emergent wavelength conversion light is wide, the wavelength range of the directly emergent wavelength conversion light can exceed the required target, even if the light valve is used for processing, the color gamut standard required by projection display can not be achieved, and meanwhile, the overall brightness is also influenced.
The light-wave conversion wheel is an important element in the present projection apparatus using a laser diode as a light source, and is responsible for converting part of the blue light emitted by the blue laser diode into yellow light and green light, and reflecting or transmitting the other part of the blue light. In the known phosphor wheel capable of reflecting blue light, a phosphor layer is disposed on a turntable of the light wave wheel, and the turntable has an opening for disposing a reflective glass. In the prior art, laser is incident to the surface of the light wave conversion layer and the plane of the reflector, and because the surface of the light wave conversion layer is a rough surface, if the two planes are coplanar, light spots falling on the reflector are smaller than those falling on the surface of the light wave conversion layer, so that the light uniformity after light combination is influenced; moreover, the front end of the light wave conversion wheel is provided with a condensing lens, and in design, the distance between the lens and the surface of the light wave conversion layer is generally 0.5-1mm, so that a focus point on the surface of the light wave conversion layer is in a focusing state, if the plane of the reflector is higher than the surface of the light wave conversion layer, namely the distance between the condensing lens and the plane of the reflector is smaller than the distance between the condensing lens and the surface of the light wave conversion layer, on one hand, assembly is influenced, an interference phenomenon exists, and on the other hand, the service life of the reflector is also influenced. In view of the above, it is desirable to provide a new technical solution to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
Accordingly, there is a need to provide a light wave conversion wheel and a light source system to solve the above-mentioned problems.
The utility model discloses a technical scheme is:
a light wave conversion wheel, comprising:
a light source;
a substrate including a first surface and a second surface disposed opposite the first surface; the first surface of the substrate is provided with a plurality of subareas;
the light wave conversion layer comprises a light incidence surface, and at least one partition is provided with the light wave conversion layer;
a reflective structure comprising a light reflective surface, at least one of said sections being provided with said reflective structure;
wherein the light reflection surface is closer to the substrate first surface than the light incidence surface.
In one embodiment, the difference h between the heights of the light reflection surface and the light incidence surface is 0 < h ≦ 0.5 mm.
In one embodiment, a space is provided between the reflection structure and the adjacent light wave conversion layer, and the width of the space is not greater than 0.5 mm.
In one embodiment, the partition provided with the reflection structure and the partition provided with the light wave conversion layer form a concentric ring-shaped structure, and the widths of the partitions are the same.
In one embodiment, the partition provided with the reflection structure is a sector structure, the partition provided with the light wave conversion layer forms an annular structure, and the radial width of the sector is greater than that of the annular structure.
In one embodiment, a diffuse reflection layer is disposed between the light wave conversion layer and the substrate.
In one embodiment, the diffuse reflection layer performs diffuse reflection on light or performs diffuse reflection on light and has adhesive property.
In one embodiment, the first surface of the substrate is provided with a recessed structure, and the reflective structure is disposed in the recessed structure.
In one embodiment, a partition of the substrate is a through hole structure, and the through hole structure area is provided with the reflection structure.
A light source system, comprising the light wave conversion wheel as set forth in any one of the above.
The utility model has the advantages that: the application provides a light wave conversion wheel will light wave conversion layer with reflection configuration sets up in same base plate plane, and makes reflection configuration's light reflection surface is less than light wave conversion layer's light incident surface, and the focus that incident light falls on the speculum promptly is in out of focus state, and falls the focus on phosphor powder for the focus state, makes the facula of two places similar like this, and the even light effect of messenger is better.
Drawings
Fig. 1 is a schematic plan view of a light wave conversion wheel according to the present invention;
fig. 2 is a schematic view of another plane structure of a light wave conversion wheel according to the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A' of FIG. 1;
FIG. 4 is another schematic cross-sectional view taken along line A-A' of FIG. 1;
FIG. 5 is a schematic cross-sectional view taken along line B-B' of FIG. 1;
FIG. 6 is a schematic view of another cross-sectional structure taken along the direction B-B' in FIG. 1;
FIG. 7 is a schematic view of another cross-sectional structure taken along the direction B-B' in FIG. 1;
FIG. 8 is a schematic view of another cross-sectional structure taken along the direction B-B' in FIG. 1;
FIG. 9 is a schematic cross-sectional view taken along line C-C' of FIG. 2;
fig. 10 is a schematic structural diagram of a light source system according to the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
A light wave conversion wheel, comprising:
a light source; the light source may emit excitation light to irradiate the light-wave conversion wheel, for example, the light source may emit blue laser, and different color light sources may be used according to different requirements.
A substrate including a first surface and a second surface disposed opposite the first surface; the first surface of the substrate is provided with a plurality of subareas; the substrate may be a metal, such as an aluminum substrate; the substrate can also be made of transparent materials, such as sapphire glass or sapphire glass provided with a reflecting layer; of course, the substrate may also be a spliced body of metal and transparent material, at this time, a through hole is formed in the metal substrate, and the transparent material is arranged in the through hole, or vice versa.
The light wave conversion layer comprises a light incidence surface, and at least one partition is provided with the light wave conversion layer; the light wave conversion layer can be made of fluorescent materials and/or quantum materials, and can be of a single-layer structure or a multi-layer fluorescent material layer; the light wave conversion layer can be composed of one fluorescent material, and can also be composed of more than two fluorescent materials.
A reflective structure comprising a light reflective surface, at least one of the sections being provided with the reflective structure; when the substrate is made of metal, the reflecting structure can be the substrate itself; or the reflecting structure is arranged on the surface of the substrate so as to achieve the purpose of reflection. Wherein the light reflection surface of the reflection structure is closer to the substrate first surface than the light incidence surface of the light wave conversion layer; i.e. the light reflecting surface is lower than the light entrance surface, which ensures an improved light wave conversion efficiency.
In one embodiment, the difference h between the heights of the light reflection surface and the light incidence surface is 0 < h ≦ 0.5 mm; of course, the light reflection surface and the light incidence surface may be disposed coplanar, i.e., the height difference between the light reflection surface and the light incidence surface is 0; in order to further improve the light wave conversion efficiency, the height difference h between the two is preferably larger than 0; or the height difference h is not more than 0.01 mm; or the height difference h is not more than 0.02 mm; or the height difference h is not more than 0.05 mm; or the height difference h is not more than 0.1 mm; or the height difference h is not more than 0.2 mm; or the height difference h is not more than 0.5 mm.
In one embodiment, a space is arranged between the reflection structure and the adjacent light wave conversion layer, and the width of the space is not more than 0.5 mm; the interval between the reflection structure and the light wave conversion layer can be 0, namely the reflection structure is tightly connected with the light wave conversion layer; or the interval width between the reflection structure and the adjacent light wave conversion layer is not more than 0.01mm, or the interval width is not more than 0.05 mm; or the spacing width is not more than 0.1 mm; or the spacing width is not more than 0.2 mm; or the gap width is not more than 0.5 mm.
In one embodiment, the partition provided with the reflection structure and the partition provided with the light wave conversion layer form a concentric ring-shaped structure, and the widths of the partitions are the same; at the moment, a plurality of subareas are arranged on the first surface of the substrate and form a concentric ring, and the width of each subarea in the radial direction is the same; it is of course also possible that at least two of said sections have different widths in the radial direction.
In one embodiment, the partition provided with the reflection structure is a fan-shaped structure, the partition provided with the light wave conversion layer forms an annular structure, and the radial width of the fan shape is greater than that of the annular structure; the number of the fan-shaped structures provided with the reflecting structures is at least one, so that at least two reflecting structures are arranged on the substrate; when the substrate has two fan-shaped structures, and each fan-shaped structure is provided with a reflection structure, the two fan-shaped structures are arranged oppositely, the two fan-shaped structures may have the same size, or may have different sizes, for example, the area, the shape, and other parameters may have different or the same sizes.
In one embodiment, a diffuse reflection layer is disposed between the light wave conversion layer and the substrate, and the diffuse reflection layer can perform diffuse reflection on the excited light, so that the conversion efficiency of the light wave conversion layer is improved. The diffuse reflection layer plays a role in diffuse reflection of light or the diffuse reflection layer plays a role in diffuse reflection of light and has adhesive property.
In one embodiment, the first surface of the substrate is provided with a recessed structure, and the reflective structure is arranged in the recessed structure; the reflecting structure can be formed in the concave structure in an evaporation or magnetron sputtering mode; alternatively, the reflecting structure is bonded in the recessed structure through an adhesive layer.
In one embodiment, a partition of the substrate is a through hole structure, the through hole structure region is provided with the reflection structure, the reflection structure has a shape similar to or the same as that of the through hole structure, the reflection structure arranged in the through hole structure comprises a substrate and a reflection layer, and the substrate can be made of a transparent material or a metal substrate; or a single layer reflective structure capable of achieving a reflective effect.
In one embodiment, the reflective structure may be disposed on the surface of the substrate by plating, bonding, or the like; or when the reflecting structure comprises a substrate and a reflecting layer, the substrate can be made of transparent materials, the reflecting layer of the reflecting structure can be connected with the substrate through an adhesive layer, laser irradiates the reflecting layer through the substrate, and the laser directly irradiates the reflecting layer at one side of the substrate of the reflecting structure, which is far away from the reflecting layer, wherein the surface of one side of the substrate of the reflecting structure, which is far away from the reflecting layer, is higher than the light wave conversion layer, or is coplanar with the light wave conversion layer, or is lower than the light wave conversion layer; or when the reflecting structure comprises a substrate and a reflecting layer, the substrate can be made of transparent materials, the reflecting layer of the reflecting structure can be connected with the substrate through an adhesive layer, and an anti-reflection layer can be arranged on one side, away from the reflecting layer, of the substrate of the reflecting structure, so that the transmittance of laser is improved.
A light source system, comprising the light wave conversion wheel as set forth in any one of the above.
Referring to fig. 1 and fig. 2, a light wave conversion wheel 100 includes a substrate 10, a light wave conversion layer 20, and a reflection structure 30, wherein 4 partitions are disposed on a surface of the light wave conversion wheel 100, and the 4 partitions form a concentric ring structure, one partition is disposed with the reflection structure 30, and the other partitions are disposed with the light wave conversion layer 20; the other light wave conversion wheel 101 comprises a substrate 10, a light wave conversion layer 20 and a reflection structure 31, wherein 4 partitions are arranged on the surface of the light wave conversion wheel 101; one of the sub-regions is a fan-shaped structure, the reflection structure 31 is disposed in the fan-shaped structure region, and the remaining sub-regions are concentric ring structures and provided with the light wave conversion layers 20.
Referring to fig. 3 and 4, a light wave conversion wheel includes a substrate 10 and a light wave conversion layer 20, wherein the light wave conversion layer 20 is disposed on a surface of the substrate 10, and the substrate 10 may be made of metal or transparent material, such as aluminum substrate, sapphire glass, etc.; a diffuse reflection layer 40 is provided between the light wave conversion layer 20 and the substrate 10, the diffuse reflection layer 40 may have an adhesive property and a diffuse reflection property, the diffuse reflection layer 40 may be directly formed on the surface of the substrate 10, or the diffuse reflection layer 40 may be provided on the surface of the substrate 10 by an adhesive layer. The light wave conversion layer 20 may be made of a fluorescent material and/or a quantum material.
Referring to fig. 5, a light wave conversion wheel includes a substrate 10, a light wave conversion layer 20 and a reflective structure 30, wherein the light wave conversion layer 20 can be directly formed on the surface of the substrate 10, or can be formed on the surface of the substrate 10 through a diffuse reflection layer 40, the light wave conversion layer 20 includes a light incident surface 210, the light incident surface 210 is far away from one side of the substrate 10, the reflective structure 30 includes a light reflection surface 310, and the light reflection surface 310 is far away from one side of the substrate 10; wherein the light reflection surface 310 is lower than the light incidence surface 210, and the height difference between the light reflection surface 310 and the light incidence surface 210 is not more than 0.5 mm.
Referring to fig. 6, a light wave conversion wheel includes a substrate 10, a light wave conversion layer 20 and a reflective structure 30, wherein the light wave conversion layer 20 may be directly formed on the surface of the substrate 10, or may be formed on the surface of the substrate 10 through a diffuse reflection layer 40; a space is arranged between the reflection structure 30 and the light wave conversion layer 20, and the width of the space is not more than 0.5 mm.
Referring to fig. 7 and 8, a light wave conversion wheel includes a substrate 10, a light wave conversion layer 20, and a reflective structure 31; the light wave conversion layer 20 may be formed directly on the surface of the substrate 10, or may be formed on the surface of the substrate 10 through a diffuse reflection layer 40; a region on the surface of the substrate 10 is a concave structure, and the reflecting structure 31 is arranged in the concave structure; the reflecting structure 31 can be formed in the concave structure by evaporation or magnetron sputtering; alternatively, the reflective structure 31 is bonded in the recess structure by an adhesive layer. A space is arranged between the reflection structure 31 and the light wave conversion layer 20, and the width of the space is not more than 0.5 mm.
Referring to fig. 9, a light wave conversion wheel includes a substrate 10, a light wave conversion layer 20 and a reflective structure 32, wherein the light wave conversion layer 20 may be directly formed on the surface of the substrate 10, or may be formed on the surface of the substrate 10 through a diffuse reflection layer 40; a partition on the surface of the substrate 10 is a through hole structure, and the reflecting structure 32 is arranged in the through hole structure; the shape of the reflection structure 32 is similar to or the same as that of the through hole structure, the reflection structure 32 disposed in the through hole structure includes a substrate and a reflection layer, and the substrate may be made of a transparent material or a metal substrate; or a single layer of reflective structure 32 capable of achieving a reflective effect.
Above the reflection configuration, when the reflection configuration includes basement and reflection stratum, the basement with can be equipped with diffusion structure or diffusion layer between the reflection stratum, the basement is close to reflection stratum side surface can set up diffusion structure to reach the diffusion function to light, certainly can also be in the basement with directly set up the diffusion layer between the reflection stratum.
Referring to fig. 10, a light source system includes a laser light source 200 and a light wave conversion wheel 100 or 101 with any of the above structures, the laser light source 200 emits laser light, the laser light passes through a lens assembly 300 and then passes through a beam splitter 400 and a condenser lens assembly 500 to irradiate the light wave conversion wheel 100 or 101, wherein a part of the laser light passes through the light wave conversion wheel 100 or 101, the laser light passing through the light wave conversion wheel 100 or 101 passes through a reflection element 600 and a reflection element 601, the laser light passes through a diffusion element 700 and then passes through a reflection element 602 and the beam splitter 400, and an excited light generated after the laser light irradiates the light wave conversion wheel 100 or 101 passes through the condenser lens assembly 500 and the beam splitter 400, and at this time, the excited light is mixed with the laser light reflected by the reflection element 602 and then passes through the beam combiner 800, and then the mixed light enters a light homogenizing rod 900 to be emitted.
The application provides a light wave conversion wheel will light wave conversion layer with reflection configuration sets up in same base plate plane, and makes reflection configuration's light reflection surface is less than light wave conversion layer's light incident surface, and the focus that incident light falls on the speculum promptly is in out of focus state, and falls the focus on phosphor powder for the focus state, makes the facula of two places similar like this, and the even light effect of messenger is better.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail with reference to the accompanying drawings. In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the invention. Moreover, the technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A light wave conversion wheel, comprising:
a light source;
a substrate including a first surface and a second surface disposed opposite the first surface; the first surface of the substrate is provided with a plurality of subareas;
the light wave conversion layer comprises a light incidence surface, and at least one partition is provided with the light wave conversion layer;
a reflective structure comprising a light reflective surface, at least one of the sections being provided with the reflective structure;
wherein the light reflection surface is closer to the substrate first surface than the light incidence surface.
2. A light-wave conversion wheel according to claim 1, characterized in that the difference h between the heights of the light-reflecting surface and the light-incident surface is 0 < h ≦ 0.5 mm.
3. The light wave conversion wheel according to claim 2, wherein a space is provided between the reflection structure and the adjacent light wave conversion layer, and the width of the space is not greater than 0.5 mm.
4. The light wave conversion wheel according to claim 1, wherein the segments provided with the reflective structures and the segments provided with the light wave conversion layer form a concentric ring structure, and the widths of the segments are the same.
5. The light wave conversion wheel according to claim 1, wherein the segments with the reflective structures are fan-shaped structures, the segments with the light wave conversion layers form an annular structure, and the radial width of the fan-shaped structures is greater than the radial width of the annular structures.
6. A light-wave conversion wheel according to claim 1, wherein a diffuse reflective layer is provided between the light-wave conversion layer and the substrate.
7. A light-wave conversion wheel according to claim 6, characterized in that the diffuse reflective layer diffusely reflects light or the diffuse reflective layer diffusely reflects light and has adhesive properties.
8. The light-wave conversion wheel according to claim 1, wherein the first surface of the substrate is provided with a recessed structure, and the reflective structure is disposed in the recessed structure.
9. A light-wave conversion wheel according to claim 1, wherein a partition of the substrate is a through-hole structure, and the through-hole structure is provided with the reflective structure.
10. A light source system comprising the light wave conversion wheel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220812230.8U CN217506357U (en) | 2022-04-11 | 2022-04-11 | Light wave conversion wheel and light source system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220812230.8U CN217506357U (en) | 2022-04-11 | 2022-04-11 | Light wave conversion wheel and light source system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217506357U true CN217506357U (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220812230.8U Active CN217506357U (en) | 2022-04-11 | 2022-04-11 | Light wave conversion wheel and light source system |
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| CN (1) | CN217506357U (en) |
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- 2022-04-11 CN CN202220812230.8U patent/CN217506357U/en active Active
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