Light source device and display device

Abstract

The present invention relates to a light source device and a display device, and aims at miniaturization of the light source device. A light source device according to an embodiment of the present invention includes: a light emitting portion (11) including a light emitting surface; an optical system (11) that condenses light of a first wavelength from the light emitting portion; and a wavelength conversion member (16) including a wavelength conversion region (161) that receives the light of the first wavelength condensed by the optical system and emits light of a second wavelength different from the first wavelength, the wavelength conversion member being disposed so that an optical axis thereof is parallel to the light emitting surface, and the optical system condenses the light of the first wavelength on the wavelength conversion member closer to the light emitting portion than an end portion on an opposite side to the light emitting portion when the wavelength conversion member and the light emitting portion are viewed in a direction parallel to the optical axis of the wavelength conversion member.

Description

Technical Field

[0001] This invention relates to light source devices and display devices. Background Technology

[0002] Light source devices used in display devices and the like are well known. Examples of display devices include projectors that display images on a screen.

[0003] For example, Patent Documents 1 and 2 disclose the aforementioned light source device, which includes an optical system and a wavelength conversion component. The optical system converges light with a first wavelength from the light-emitting part, and the wavelength conversion component receives the light converged by the optical system and then emits light with a second wavelength different from the first wavelength.

[0004] Patent Document 1: JP Patent No. 6283932

[0005] Patent Document 2: JP Patent No. 6783545

[0006] However, in the configuration of Patent Document 1, when viewed along a direction parallel to the central axis of the wavelength conversion member, the lens is positioned further outward than the end of the wavelength conversion member opposite to the light-emitting part, thus the light source device becomes correspondingly larger. In the configuration of Patent Document 2, when viewed along a direction parallel to the central axis of the wavelength conversion member, the end of the optical system opposite to the light-emitting part is located further outward than the end of the wavelength conversion member opposite to the light-emitting part, thus the light source device also becomes correspondingly larger. Summary of the Invention

[0007] The purpose of this invention is to miniaturize the light source device.

[0008] To achieve the above objectives, the present invention provides a light source device, characterized in that it has a light-emitting part, including a light-emitting surface; an optical system for converging light of a first wavelength from the light-emitting part; and a wavelength conversion member, including a wavelength conversion region that receives the light of the first wavelength converged by the optical system and then emits light of a second wavelength different from the first wavelength, wherein the wavelength conversion member is configured such that its central axis is parallel to the light-emitting surface, and when the wavelength conversion member and the light-emitting part are observed along a direction parallel to the central axis of the wavelength conversion member, the optical system converges the light of the first wavelength onto the wavelength conversion member at a position closer to the light-emitting part than the end opposite to the light-emitting part.

[0009] The advantage of this invention is that the light source device is miniaturized. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the internal structure of the light source device according to the first embodiment.

[0011] Figure 2 yes Figure 1 A cross-sectional view of the light source device in the direction of arrow A.

[0012] Figure 3 yes Figure 1 The first example cross-sectional view of the light source device in the direction of arrow B.

[0013] Figure 4 yes Figure 1 The second example sectional view of the light source device in the direction of arrow B.

[0014] Figure 5 yes Figure 1 The third sectional view of the light source device in the direction of arrow B.

[0015] Figure 6 This is a schematic diagram of the internal structure of the display device according to the second embodiment.

[0016] Figure 7 This is a schematic diagram of the internal structure of the light source device according to the third embodiment. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. The same reference numerals are used to denote the same components in the drawings, and repeated descriptions are omitted where appropriate.

[0018] The embodiments shown below are examples of light source devices and display devices that specifically embody the inventive concept. The present invention is not limited to the embodiments shown below. Unless otherwise stated, the dimensions, materials, shapes, relative positions, etc., of the components described below are intended to clarify the scope of the invention and not to limit it. For ease of explanation, the size and positional relationships of the components shown in the drawings are sometimes exaggerated.

[0019] [First Implementation Method]

[0020] <Composition of the Light Source Device>

[0021] refer to Figure 1 and Figure 2 The configuration of a light source device 100 according to a first embodiment will be described. Figure 1 This is a schematic diagram of the internal structure of the light source device 100. Figure 2 yes Figure 1 A cross-sectional view of the light source device 100 in the direction of arrow A. The light source device 100 emits light source light L. The light source light L is used, for example, in display devices such as projectors that display images on a screen.

[0022] like Figure 1As shown, the light source device 100 includes a first light-emitting unit 11, a first relay lens 12, a first lens array 13, a first beam splitter 14, a first optical system 15, a first wavelength conversion component 16, and a first light diffusion component 17. The light source device 100 also includes a second light-emitting unit 21, a second relay lens 22, a second lens array 23, a second beam splitter 24, a second optical system 25, a second wavelength conversion component 26, and a second light diffusion component 27. The light source device 100 also includes a light combining component 30 and a light homogenizing element 40.

[0023] The first light-emitting part 11 includes a first light-emitting surface 110, and is an example of a light-emitting part, which is placed on the support surface 10. The vertical surface 20 refers to the surface perpendicular to the support surface 10. The support surface 10 is the surface of the mounting substrate on which the first light-emitting part 11 is mounted in the positive Z-axis direction. The first light-emitting part 11 includes a plurality of two-dimensionally arranged semiconductor lasers, and the plurality of semiconductor lasers respectively emit a first laser L11 toward the first relay lens 12. The first laser L11 has a first wavelength corresponding to blue or ultraviolet light, etc., and is capable of stimulating a first wavelength conversion region in the first wavelength conversion member 16.

[0024] The first laser L11 emitted from the first light-emitting unit 11 becomes approximately parallel light after passing through lenses 121 and 122 in the first relay lens 12, and then passes through the first lens array 13 before entering the first beam splitter 14. The first beam splitter 14 is a wavelength-selective reflector that reflects the first laser L11 of the first wavelength while allowing other light of other wavelengths to pass through.

[0025] The first laser L11, reflected by the first beam splitter 14, reaches the first optical system 15. The first optical system 15 is an example of an optical system used to converge the first laser L11 from the first light-emitting part 11.

[0026] The first optical system 15 includes lenses 151, 152, and 153. The first optical system 15, through lenses 151 and 152, focuses a first laser L11 from a first beam splitter 14 onto a first wavelength conversion component 16. The first focusing position 15s indicates the focusing position of the first laser L11 focused by the first optical system 15 onto the first wavelength conversion component 16.

[0027] The first wavelength conversion component 16 is an example of a wavelength conversion component, which includes a wavelength conversion region that receives a first laser L11 focused by the first optical system 15 and then emits light of a second wavelength different from the first wavelength. The first wavelength conversion component 16 is configured such that its central axis 16A is parallel to the bearing surface 10. The first wavelength conversion component 16 includes a first wavelength conversion region and a first reflection region. The first wavelength conversion component 16 emits a first fluorescence L12 through the first wavelength conversion region, and simultaneously emits the first laser L11 through reflection from the first reflection region.

[0028] The first optical system 15 guides the first laser L11 and the first fluorescence L12 from the first wavelength conversion component 16 to the lens 153 via lenses 152 and 151. The lens 153 then focuses the guided first laser L11 and the first fluorescence L12 onto the first reflective surface 301 of the light combining component 30 via the first light diffusion component 17. The first light diffusion component 17 includes a light diffusion surface that diffuses the first laser L11 and the first fluorescence L12 that have passed through it.

[0029] The second light-emitting part 21 includes a second light-emitting surface 210, and is an example of a light-emitting part, which is placed on the bearing surface 10. The second light-emitting part 21 includes a plurality of semiconductor lasers arranged in two dimensions, and the plurality of semiconductor lasers respectively emit a second laser L21 into the second relay lens 22. The second laser L21 has a first wavelength corresponding to blue or ultraviolet light, etc., and is capable of stimulating the second wavelength conversion region of the second wavelength conversion member 26.

[0030] The second laser L21 emitted from the second light-emitting unit 21 becomes approximately parallel light after passing through lenses 221 and 222 in the second relay lens 22, and then passes through the second lens array 23 before entering the second beam splitter 24. The second beam splitter 24 is a wavelength-selective reflector that reflects the second laser L21 of the first wavelength while allowing other light of different wavelengths to pass through.

[0031] The second laser L21, reflected by the second beam splitter 24, reaches the second optical system 25. The second optical system 25 is an example of an optical system used to converge the second laser L21 from the second light-emitting unit 21.

[0032] The second optical system 25 includes lenses 251, 252, and 253. The second optical system 25 focuses the second laser L21 from the second beam splitter 24 onto the second wavelength conversion component 26 via lenses 251 and 252. The second focusing position 25s indicates the focusing position of the second laser L21 focused onto the second wavelength conversion component 26 by the second optical system 25.

[0033] The second wavelength conversion component 26 is an example of a wavelength conversion component, which includes a wavelength conversion region that receives the second laser L21 from the second light-emitting unit 21 and then emits light of a second wavelength different from the first wavelength. The second wavelength conversion component 26 is configured such that its central axis 26A is parallel to the bearing surface 10. The second wavelength conversion component 26 includes a second wavelength conversion region and a second reflection region. The second wavelength conversion component 26 emits the second fluorescence L22 through the second wavelength conversion region and simultaneously reflects the second laser L21 through the second reflection region.

[0034] The second optical system 25 guides the second laser L21 and the second fluorescence L22 from the second wavelength conversion component 26 to the lens 253 via lenses 252 and 251. The lens 253 then focuses the guided second laser L21 and the second fluorescence L22 onto the second reflective surface 302 of the light combining component 30 via the second light diffusion component 27. The second light diffusion component 27 includes a light diffusion surface that diffuses the second laser L21 and the second fluorescence L22 that have passed through it.

[0035] The light combining component 30 reflects the diffused light from the first light diffusing component 17 using a first reflective surface 301 and reflects the diffused light from the second light diffusing component 27 using a second reflective surface 302. In this way, the light combining component 30 emits the light source L, which combines the first laser L11, the first fluorescence L12, the second laser L21, and the second fluorescence L22, to the light homogenizing element 40. The light combining component 30 can be, for example, a right-angle prism, but it is not limited to any prism that can combine the first laser L11, the first fluorescence L12, the second laser L21, and the second fluorescence L22.

[0036] The light homogenizing element 40 homogenizes light by mixing light from the light combining component 30. The light homogenizing element 40 can be, for example, a light tunnel composed of four mirrors, a rod integrator, a compound eye lens, etc.

[0037] The light source device 100 emits light L that has been homogenized by the light homogenizing element 40.

[0038] In this embodiment, the first optical system 15 and the second optical system 25 have the same configuration. The first wavelength conversion component 16 and the second wavelength conversion component 26 have the same configuration.

[0039] like Figure 1 and Figure 2 As shown, line 70 passing through the first focusing position 15s and the second focusing position 25s is parallel to line 80 passing through the center 16c of the first wavelength conversion component 16 and the center 26c of the second wavelength conversion component 26. "Line 70 is parallel to line 80" means that lines 70 and 80 are substantially parallel. "Substantially" means allowing deviations generally considered to be within the acceptable range of error. In this embodiment, for example, it means a parallel deviation of ±5 degrees. Figure 1 In the middle, line 80 overlaps with central axis 16A and central axis 26A, so all symbols are marked in the same place.

[0040] The light source device 100 may also include light-emitting parts other than the first light-emitting part 11 and the second light-emitting part 21. The first light-emitting part 11 and the second light-emitting part 21 are not limited to multiple semiconductor lasers; they may each have a single semiconductor laser, or they may each have one or more light-emitting diodes or other light-emitting parts that emit incoherent light. The light source device 100 may also omit the first relay lens 12, the first lens array 13, the first light-diffusing component 17, the second relay lens 22, the second lens array 23, and the second light-diffusing component 27.

[0041] <The structure surrounding the first wavelength conversion component>

[0042] The following describes the configuration surrounding the first wavelength conversion component 16. Figure 3 yes Figure 1 The first example cross-sectional view of the light source device 100 in the direction of arrow B.

[0043] like Figure 3 As shown, the first wavelength conversion component 16 includes a first wavelength conversion region 161 and a first reflection region 162 on a first rotating substrate 163. The planar shape of the first rotating substrate 163, viewed from the normal direction, is approximately circular and can be rotated around the central axis 16A of the first wavelength conversion component 16. In the planar view, the first wavelength conversion region 161 and the first reflection region 162 are respectively a portion of annular regions on the first wavelength conversion component 16.

[0044] The first wavelength conversion region 161 is the phosphor region of the first fluorescence L12 excited by the emitted first laser L11. The wavelength of the first fluorescence L12 corresponds to the second wavelength. The first reflection region 162 reflects the first laser L11 converged by the first optical system 15, which is emitted without first wavelength conversion.

[0045] The first optical system 15 is configured to focus the first laser L11 onto the first wavelength conversion region 161 and the first reflection region 162 of the first wavelength conversion component 16. The first wavelength conversion component 16 can rotate around the central axis 16A to alternately exchange the first wavelength conversion region 161 and the first reflection region 162, emitting the first laser L11 and the first fluorescence L12 in a time-division manner.

[0046] The first wavelength conversion component 16 may also include a fluorescent region that emits fluorescence at wavelengths other than the first and second wavelengths. The first wavelength conversion component 16 is not limited to rotational drive; it may also be driven by translation in a direction intersecting the central axis 16A, or it may not be driven at all. The planar shape of the first wavelength conversion component 16 is not limited to a generally circular shape; it may also be a generally elliptical shape, a generally polygonal shape, or the like.

[0047] In the light source device 100 of the first example, when the first wavelength conversion member 16 and the first light-emitting part 11 are viewed along a direction parallel to the central axis of the first wavelength conversion member, Figure 1 When viewed in the direction of arrow B, the first optical system 15 focuses the first laser L11 onto the first wavelength conversion component 16 at a position closer to the first light-emitting part 11 than the end opposite to the first light-emitting part 11.

[0048] exist Figure 3 In the diagram, end 155 represents the end of the first optical system 15 opposite to the first light-emitting part 11. The first optical system 15', indicated by a dashed line, represents the first optical system set as the first focusing position 15s', becoming the end 165 of the first wavelength conversion component 16 opposite to the first light-emitting part 11. Distance d11 represents the distance between the first focusing position 15s' and the first light-emitting surface 110. Distance D10 represents the distance between the first focusing position 15s' and the first light-emitting surface 110. Distance d11 is less than distance D10.

[0049] Figure 4 yes Figure 1 The second example cross-sectional view of the light source device 100 in the direction of arrow B. (See example...) Figure 4 As shown, in the second example of the light source device 100, when along the direction parallel to the central axis 16A of the first wavelength conversion member 16 ( Figure 1 (In the direction of arrow B) When observing the first wavelength conversion component 16 and the first light-emitting part 11, the end 155 of the first optical system 15 is closer to the first light-emitting part 11 than the end 165 of the first wavelength conversion component 16, which is opposite to the first light-emitting part 11. Distance D11 represents the distance between the end 155 of the first optical system 15 and the first light-emitting surface 110. Distance D11 is less than distance D10.

[0050] Figure 5 yes Figure 1 The third example cross-sectional view of the light source device 100 in the direction of arrow B. (See example...) Figure 5 As shown, the third example of the light source device 100 has a holding member 150 for holding the first optical system 15. In the third example of the light source device 100, when along the direction parallel to the central axis 16A of the first wavelength conversion member 16 ( Figure 1 (In the direction of the middle arrow B) When observing the first wavelength conversion component 16 and the first light-emitting part 11, the end 156 of the holding component 150 opposite to the first light-emitting part 11 is located closer to the first light-emitting part 11 than the end 165 of the first wavelength conversion component 16. Distance D12 represents the distance between the end 156 of the holding component 150 and the first light-emitting surface 110. Distance D12 is less than distance D10.

[0051] <Function and Effect of Light Source Device>

[0052] As described above, the light source device 100 includes a first light-emitting portion 11 (light-emitting portion) having a first light-emitting surface 110, a first wavelength conversion member 16 (wavelength conversion member), and a first optical system 15 (optical system). The first wavelength conversion member 16 is configured such that its central axis 16A is parallel to the first light-emitting surface 110. When the first wavelength conversion member 16 and the first light-emitting portion 11 are viewed along a direction parallel to the central axis 16A of the first wavelength conversion member 16 ( Figure 1 (In the direction of arrow B), the first optical system 15 focuses the first laser L11 onto the first wavelength conversion component 16 at a position closer to the first light-emitting part 11 than the end 165 opposite to the first light-emitting part 11. Compared to the first optical system 15 focusing the first laser L11 onto the end 165 of the first wavelength conversion component 16, this configuration allows the end 155 of the first optical system 15 to be positioned on the side of the first light-emitting part 11, thus facilitating the miniaturization of the light source device 100.

[0053] The light source device 100 can also be configured such that, when the first wavelength conversion member 16 and the first light-emitting part 11 are viewed along a direction parallel to the central axis 16A of the first wavelength conversion member 16, the end portion 155 of the first optical system 15 is closer to the first light-emitting part 11 than the end portion 165 of the first wavelength conversion member 16. This configuration is advantageous for miniaturization of the light source device 100 compared to a configuration where the end portion 155 of the first optical system 15 is located closer to the opposite side of the first light-emitting part 11 than the end portion 165 of the first wavelength conversion member 16.

[0054] The light source device 100 may also include a holding member 150. In this case, when the first wavelength conversion member 16 and the first light-emitting part 11 are viewed along a direction parallel to the central axis 16A of the first wavelength conversion member 16, the holding member 150 may also be configured such that its end 156 is closer to the first light-emitting part 11 than its end 165. This configuration is advantageous for miniaturization of the light source device 100 compared to the configuration where the end 156 of the holding member 150 is closer to the opposite side of the first light-emitting part 11 than the end 165 of the first wavelength conversion member 16.

[0055] The light source device 100 includes a first light-emitting part 11, a second light-emitting part 21, a first wavelength conversion component 16, a second wavelength conversion component 26, a first optical system 15, and a second optical system 25. The first optical system 15 focuses a first laser L11, and the second optical system 25 focuses a second laser L21. A line 70 passing through the first focusing position 15s of the first optical system 15 and the second focusing position 25s of the second optical system 25 is parallel to a line 80 passing through the center 16c of the first wavelength conversion component 16 and the center 26c of the second wavelength conversion component 26. This configuration is advantageous for miniaturizing the light source device 100 compared to a configuration where lines 70 and 80 intersect each other.

[0056] In the light source device 100, a first laser L11 from the first light-emitting unit 11 excites the first wavelength conversion region 161 of the first wavelength conversion member 16, and a second laser L21 from the second light-emitting unit 21 excites the second wavelength conversion region 261 of the second wavelength conversion member 26. Therefore, compared to the case where the first light-emitting unit 11 and the second light-emitting unit 21 jointly excite a single wavelength conversion region, heat generation in the wavelength conversion region can be suppressed, and the reduction in wavelength conversion efficiency caused by the wavelength conversion member can be suppressed. As a result, the light source device 100 is able to provide light emitting light L with high brightness.

[0057] The light source device 100 does not necessarily need to have a second light-emitting part 21, a second relay lens 22, a second lens array 23, a second beam splitter 24, a second optical system 25, a second wavelength conversion component 26, and a second light diffusion component 27. Even without the above-mentioned components, the light source device 100 can be miniaturized.

[0058] [Second Implementation]

[0059] The display device 200 of the second embodiment will now be described. In the second embodiment, the same reference numerals are used for components that are the same as those in the first embodiment, and repeated descriptions are omitted where appropriate. This same treatment will be adopted in other embodiments shown later.

[0060] Figure 6 This is a schematic diagram of the internal structure of the display device 200. The display device 200 is, for example, a projector, which displays images by projecting images onto a screen S. The display device 200 includes a housing 220, a light source device 100, an illumination optical system 50, a spatial light modulator 51, and a projection optical system 60.

[0061] The housing 220 houses the light source device 100, the illumination optical system 50, the spatial light modulator 51, and the projection optical system 60.

[0062] The light source device 100 emits light including wavelengths corresponding to R (red), G (green), and B (blue).

[0063] The illumination optical system 50 uses light source L emitted from the light source device 100 to illuminate the spatial light modulator 51 approximately uniformly. The illumination optical system 50 has, for example, one or more lenses or one or more reflective surfaces.

[0064] The spatial light modulator 51 has multiple pixels, each of which is turned on or off, emitting light from the light source device 100 and generating an image through the light source light L of the illumination optics system 50. The spatial light modulator 51 includes, for example, a light valve of a digital micromirror device (DMD), a transmissive liquid crystal panel, a reflective liquid crystal panel, etc.

[0065] The projection optics system 60 magnifies and projects the image generated by the spatial light modulator 51 onto the screen S. The projection optics system 60 has, for example, one or more lenses.

[0066] The display device 200 is able to suppress its own size because it has a light source device 100.

[0067] [Third Implementation Method]

[0068] Figure 7 This is a schematic diagram illustrating the internal structure of a light source device 100a according to a third embodiment. The light source device 100a has a first light-emitting unit 11, a first relay lens 12, a first lens array 13, a first beam splitter 14, a first optical system 15, and a first wavelength conversion component 16, all with the same structure, function, and arrangement as in the first embodiment. The light source device 100a also includes a second light-emitting unit 21a, a second relay lens 22a, a second lens array 23a, a second beam splitter 24a, a second optical system 25a, a second wavelength conversion component 26a, and a color wheel 90. The second relay lens 22a includes lenses 221a and 222a. The second optical system 25a includes lenses 251a, 252a, and 253a.

[0069] The second light-emitting part 21a has the same structure and function as the second light-emitting part 21, the second relay lens 22a has the same structure and function as the second relay lens 22, and the second lens array 23a has the same structure and function as the second lens array 23, but the orientation is rotated by 90 degrees. The second beam splitter 24a has the same structure and function as the second beam splitter 24, the second optical system 25a has the same structure and function as the second optical system 25, and the second wavelength conversion component 26a has the same structure and function as the second wavelength conversion component 26a, but the orientation is rotated by 90 degrees.

[0070] The first light-emitting surface 110 of the first light-emitting part 11 is approximately parallel to the central axis 16A of the first wavelength conversion component 16. Approximately parallel means that a strict parallel state is not required, and deviations from the parallel state that are generally considered to be within the margin of error are allowed, such as a deviation from the parallel state of ±1 degree or less.

[0071] Light emitted from the first light-emitting unit 11 passes sequentially through the first relay lens 12, the first lens array 13, the first beam splitter 14, and the first optical system 15, converging at the first focusing position 15s of the first wavelength conversion unit 16. The converged light, after reflection, becomes the first laser L11, and after wavelength conversion, it becomes the first fluorescence L12, which is emitted from the first wavelength conversion unit 16. The first laser L11 and the first fluorescence L12 (light from the first wavelength conversion unit 16) reach the light combining unit 30 through the first optical system 15, and after reflection by the light combining unit 30, they reach the color wheel 90.

[0072] The second light-emitting surface 210a of the second light-emitting part 21a is substantially parallel to the central axis 26aA of the second wavelength conversion component 26a. A straight line including the central axis 26aA of the second wavelength conversion component 26a intersects a straight line including the central axis 16A of the first wavelength conversion component 16. In this embodiment, the straight line including the central axis 26aA is substantially orthogonal to the straight line including the central axis 16A. "Substantially orthogonal" means that a strict orthogonal state is not required, and deviations from what is generally considered an error level of orthogonality are permitted, such as deviations of ±1 degree or less from the orthogonal state.

[0073] Light from the second light-emitting unit 21a passes sequentially through the second relay lens 22a, the second lens array 23a, the second beam splitter 24a, and the second optical system 25a, converging at the second focusing position 25as of the second wavelength conversion unit 26a. The converged light, after reflection, becomes the second laser L21, and the converged light, after wavelength conversion, becomes the second fluorescence L22, which is emitted from the second wavelength conversion unit 26a. The second laser L21 and the second fluorescence L22 (light from the second wavelength conversion unit 26a) pass through the second optical system 25a, then pass outside the area of ​​the light combining unit 30, reaching the color wheel 90. That is, the light from the second wavelength conversion unit 26a reaches the color wheel 90 directly without passing through the light combining unit 30.

[0074] The light from the first wavelength conversion component 16 and the light from the second wavelength conversion component 26a are combined at the combining position 70s. The combined light is then incident on the light homogenizing element 40.

[0075] The synthesis position 70s is the position where the first laser L11 and the second laser L21 are closest to each other. When the first laser L11 and the second laser L21 pass through approximately the same position, this approximately identical passing position corresponds to the synthesis position 70s. Alternatively, the synthesis position 70s is the position where the first fluorescence L12 and the second fluorescence L22 are closest to each other. When the first fluorescence L12 and the second fluorescence L22 pass through approximately the same position, this approximately identical passing position corresponds to the synthesis position 70s.

[0076] Strictly speaking, all illumination light from the light source device 100a is combined at the incident position of the light homogenizing element 40. Therefore, the combined position of the first laser L11 and the second laser L21 or the combined position of the first fluorescence L12 and the second fluorescence L22 can also be the center of the incident opening of the light homogenizing element 40.

[0077] To uniquely determine the synthesis position 70s, a plane comprising the synthesis position 70s, the first focusing position 15s of the first optical system 15, and the second focusing position 25as of the second optical system 25a can be defined as the first plane P1. Figure 7 In the diagram, the plane parallel to the XZ plane corresponds to the first plane P1.

[0078] In this embodiment, the center 16c of the first wavelength conversion component and the center 26ac of the second wavelength conversion component 26a are both located in either of the two spaces divided by the first plane P1.

[0079] In this embodiment, if the plane containing the central axis 16A of the first wavelength conversion component 16 and the central axis 26aA of the second wavelength conversion component 26a is defined as the second plane P2, then the first plane P1 and the second plane P2 are approximately parallel. Figure 7 In the middle, the plane parallel to the XZ plane corresponds to the second plane P2.

[0080] In this embodiment, when the first wavelength conversion member 16 and the first light-emitting part 11 are viewed along a direction parallel to the central axis 16A of the first wavelength conversion member 16, the first laser L11 is focused on the first wavelength conversion member 16 at a position closer to the first light-emitting part 11 than at the end opposite to the first light-emitting part 11. This configuration, compared to a configuration where the end of the first optical system 15 is located closer to the end of the first wavelength conversion member 16 than to the end opposite to the first light-emitting part 11, facilitates miniaturization of the first optical system 15, thereby enabling overall miniaturization of the light source device 100a.

[0081] In this embodiment, when the second wavelength conversion member 26a and the second light-emitting part 21a are viewed along a direction parallel to the central axis 26aA of the second wavelength conversion member 26a, the second laser L21 is focused on the second wavelength conversion member 26a at a position closer to the second light-emitting part 21 than at the end opposite to the second light-emitting part 21. This configuration, compared to the configuration where the end of the second optical system 25 is located closer to the second light-emitting part 21 than the end of the second wavelength conversion member 26, facilitates miniaturization of the second optical system 25, thereby enabling overall miniaturization of the light source device 100a.

[0082] Even if the first light-emitting surface 110 of the first light-emitting part 11 is arranged approximately parallel to the Z-axis, the same effect as described above can be obtained. Even if the second light-emitting surface 210a of the second light-emitting part 21a is arranged parallel to the X-axis, the same effect as described above can be obtained.

[0083] Examples of embodiments of the present invention have been described above, but the present invention is not limited to these specific embodiments and various modifications and alterations are permitted within the scope of the spirit of the present invention as described in the claims of the patent application.

[0084] The light source device 100 is not limited to the display device; in addition, it can be used as a device for emitting light in various optical devices.

[0085] Explanation of reference numerals in the attached figures

[0086] 10 Bearing surface

[0087] 11 First Light-Glowing Section

[0088] 110 First luminous surface

[0089] 12 First relay lens

[0090] 13 First Lens Array

[0091] 14 First beam splitter

[0092] 15 First Optical System

[0093] 15s First spotlight position

[0094] 155 End of the first optical system

[0095] 16 First Wavelength Conversion Component

[0096] The central axis of the first wavelength conversion component of 16A

[0097] 16c First wavelength conversion component center

[0098] 161 First wavelength conversion region

[0099] 162 First Reflection Area

[0100] 163 First Rotating Substrate

[0101] 165 End of the first wavelength conversion component

[0102] 17 First light diffusion component

[0103] 20 Vertical planes

[0104] 21 Second Light-Emitting Section

[0105] 210 Second luminous surface

[0106] 22 Second relay lens

[0107] 23 Second Lens Array

[0108] 24 Second beam splitter

[0109] 25. Central axis of the second wavelength conversion component

[0110] 26c Second Wavelength Conversion Component

[0111] 21 Second Light-Emitting Section

[0112] 261 Second Wavelength Conversion Region

[0113] 262 Second Reflection Area

[0114] 263 Second Rotating Substrate

[0115] 27 Second light diffusion component

[0116] 30 Photosynthesis Components

[0117] 301 First Reflecting Surface

[0118] 302 Second Reflecting Surface

[0119] 40 Light homogenizing elements

[0120] 50 Illumination Optical System

[0121] 51 Spatial Light Modulator

[0122] 60 Projection Optical System

[0123] 70 Lines passing through the first and second focusing positions

[0124] 80 Line passing through the center of the first wavelength conversion component and the center of the first wavelength conversion component

[0125] 90 color wheel

[0126] 100 Light Source Device

[0127] Lenses 121, 122, 151, 152, 153, 221, 222, 251, 252, 253

[0128] 150 Retaining Components

[0129] 156. End of retaining component

[0130] 200 display devices

[0131] 220 housing

[0132] L11 First Laser

[0133] L12 First Fluorescence

[0134] L21 Second Laser

[0135] L22 second fluorescence

[0136] L light source

[0137] Distances of d11, D10, D11, and D12

Claims

1. A light source device, characterized in that, have The light-emitting part includes a light-emitting surface; An optical system that converges light of a first wavelength from the light-emitting part; as well as The wavelength conversion component includes a wavelength conversion region that receives light of the first wavelength converged by the optical system and then emits light of a second wavelength different from the first wavelength. The wavelength conversion component is configured such that its central axis is parallel to the light-emitting surface. When the wavelength conversion component and the light-emitting part are viewed along a direction parallel to the central axis of the wavelength conversion component, the optical system focuses the light of the first wavelength onto the wavelength conversion component at a position closer to the light-emitting part than the end opposite to the light-emitting part. The end of the optical system opposite to the light-emitting part is located closer to the light-emitting part than the end of the wavelength conversion component opposite to the light-emitting part.

2. The light source device according to claim 1, characterized in that, The optical system has a holding member, the end of which is opposite to the light-emitting part is located closer to the light-emitting part than the end of the wavelength conversion member opposite to the light-emitting part.

3. The light source device according to claim 1, characterized in that, The optical system includes a first optical system and a second optical system. The wavelength conversion component includes a first wavelength conversion component and a second wavelength conversion component. When a plane is defined as the first plane, which includes the first focusing position formed by the first optical system on the first wavelength conversion component, the second focusing position formed by the second optical system on the second wavelength conversion component, and the combining position of the light from the first optical system and the light from the second optical system, the center of the first wavelength conversion component and the center of the second wavelength conversion component are simultaneously located in either of the two spaces divided by the first plane.

4. The light source device according to claim 3, characterized in that, When the plane including the central axis of the first wavelength conversion component and the central axis of the second wavelength conversion component is defined as the second plane, the first plane is parallel to the second plane.

5. The light source device according to claim 3, characterized in that, The straight line including the central axis of the first wavelength conversion component intersects the straight line including the central axis of the second wavelength conversion component.

6. The light source device according to claim 3, characterized in that, The straight line including the central axis of the first wavelength conversion component is parallel to the straight line including the central axis of the second wavelength conversion component.

7. The light source device according to claim 1 or 2, characterized in that, The light-emitting part includes a first light-emitting part and a second light-emitting part. The wavelength conversion component includes a first wavelength conversion component and a second wavelength conversion component. The optical system includes a first optical system and a second optical system. The first optical system converges the light of the first wavelength from the first light-emitting part. The second optical system converges the light of the first wavelength from the second light-emitting part. A line passing through the first focusing position of the first optical system and the second focusing position of the second optical system is parallel to a line passing through the center of the first wavelength conversion component and the center of the second wavelength conversion component.

8. A display device, characterized in that, include A spatial light modulator having a plurality of pixels, each of which turns on or cuts off light emitted from a light source device according to any one of claims 1 to 7 to generate an image; as well as A projection optical system projects the image generated by the spatial light modulator.

Images