Light source device

Abstract

To provide a light source device in which a plurality of light emitting elements are individually lit and which has two or more patterns of light distribution.SOLUTION: A light source device according to an embodiment of the present invention includes a light-emitting portion assembly including a first light emitting portion having a first light-emitting element, and a second light-emitting portion provided along the outer periphery of the first light-emitting portion in plan view and having a plurality of second light-emitting elements, and a lens arranged on the light-emitting portion assembly, and the first light-emitting element and the plurality of second light-emitting elements are arranged vertically and horizontally, each of the first light-emitting element and the plurality of second light-emitting elements can be independently controlled to emit light, and the half-value full angle of the light emitted from the first light-emitting portion and emitted from the lens is different from the half-value full angle of the light emitted from the second light-emitting portion and emitted from the lens.SELECTED DRAWING: Figure 2B

Description

[Technical field]

[0001] The present disclosure relates to a light source device. [Background technology]

[0002] Patent document 1 discloses an LED light-emitting device comprising a first light-emitting section and a second light-emitting section each having a group of LED elements and formed concentrically on a circuit board, and lenses above the first light-emitting section and the second light-emitting section, the first light-emitting section and the second light-emitting section being driven to light independently. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-082236 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present disclosure is to provide a light source device in which a plurality of light emitting elements are individually lit and which has two or more light distribution patterns. [Means for solving the problem]

[0005] A light source device according to an embodiment of the present disclosure includes a light emitting unit assembly including a first light emitting unit having a first light emitting element, and a second light emitting unit having a plurality of second light emitting elements spaced apart along an outer periphery of the first light emitting unit in a plan view, and a lens disposed on the light emitting unit assembly; The first light-emitting element and the plurality of second light-emitting elements are arranged vertically and horizontally, the first light-emitting element and the plurality of second light-emitting elements can be independently controlled to be lit, and a full angle at half maximum of the light distribution of light emitted from the first light-emitting unit and exiting from the lens is different from a full angle at half maximum of the light distribution of light emitted from the second light-emitting unit and exiting from the lens.

[0006] A light source device according to one embodiment of the present disclosure comprises a light-emitting unit assembly having a first light-emitting unit having a first light-emitting element and a second light-emitting unit having a second light-emitting element, and a lens arranged on the light-emitting unit assembly, and is characterized in that, in a planar view, the second light-emitting unit is arranged at a distance along the outer periphery of the first light-emitting unit and consists of one of the second light-emitting elements. Effect of the Invention

[0007] According to an embodiment of the present disclosure, a light source device having two or more light distribution patterns in which a plurality of light emitting elements are individually lit can be provided. [Brief description of the drawings]

[0008] [Figure 1A] 1 is a plan view showing a schematic configuration of a light source device according to a first embodiment. [Figure 1B] 1B is an end view taken along line AA in FIG. 1A, showing a schematic configuration of the light source device of the first embodiment. [Figure 2A] 2A and 2B are plan views each showing a schematic view of a first light-emitting section and a second light-emitting section of the light source device of the first embodiment. [Figure 2B] FIG. 2 is a plan view showing a schematic configuration in which a second light-emitting section having at least two spaced apart light-emitting elements surrounds a first light-emitting section. [Figure 2C] 3A is an end view showing a schematic cross section of the second light-emitting portion taken along lines III-III and IV-IV in FIG. 2B. FIG. [Figure 2D] FIG. 2 is a schematic bottom view of the light-emitting unit assembly. [Figure 2E] FIG. 2 is a plan view showing a schematic diagram of a second light-emitting section having one light-emitting element spaced apart along the outer periphery of the first light-emitting section. [Figure 2F] 2B is an end view showing a schematic cross section of the second light-emitting portion taken along line II in FIG. 2E. FIG. [Figure 2G] 2E. FIG. 2F is an end view showing a cross section of the light-emitting unit assembly taken along line II-II in FIG. 2E. [Figure 3A] FIG. 2 is an end view showing a schematic view of a light-emitting unit assembly (including a first light-emitting unit and a second light-emitting unit) before light emission. [Figure 3B] 4 is an end view showing a schematic view of a first light-emitting section when emitting light. FIG. [Figure 3C] 4 is an end view showing a schematic view of a second light-emitting section when emitting light. FIG. [Figure 4A] 4 is an end view showing a schematic light distribution control of the light emitted from the first light-emitting section by a Fresnel lens. FIG. [Figure 4B] 10 is an end view showing a schematic light distribution control (ultra-wide-angle light distribution control) of the light emitted from the first light-emitting section by the Fresnel lens. FIG. [Figure 4C] 1 is an end view showing a schematic light distribution control (ultra-narrow angle light distribution control) of the light emitted from a first light-emitting section by a Fresnel lens. FIG. [Figure 4D] 10 is an end view showing a schematic light distribution control of the light emitted from the second light-emitting section by the Fresnel lens. FIG. [Figure 4E] 10 is an end view showing a schematic light distribution control (wide-angle light distribution control) of the light emitted from the second light-emitting section by the Fresnel lens. FIG. [Figure 4F] 10 is an end view showing a schematic light distribution control (narrow angle light distribution control) of the light emitted from the second light-emitting section by the Fresnel lens. FIG. [Figure 5A] FIG. 11 is a plan view showing a schematic configuration of a light source device according to a second embodiment. [Figure 5B] 5B is an end view taken along line BB in FIG. 5A, which illustrates a schematic diagram of how the light distribution of each of the first light-emitting section and the third light-emitting section of the light-emitting section assembly corresponding to each of the two Fresnel lenses is controlled by the lens. [Figure 5C] 5B is an end view taken along line BB in FIG. 5A, which illustrates a schematic diagram of how the light distribution of each of the second light-emitting section and the fourth light-emitting section of the light-emitting section assembly corresponding to each of the two Fresnel lenses is controlled by the lens. [Figure 6A] FIG. 11 is a plan view illustrating a preparation step of a wavelength conversion member sheet. [Figure 6B] FIG. 6B is an end view taken along line 6a-6a in FIG. 6A, diagrammatically illustrating a step of preparing a wavelength conversion member sheet. [Figure 6C]FIG. 11 is a plan view showing a schematic diagram of a process for dividing a wavelength conversion member sheet into individual pieces. [Figure 6D] FIG. 6D is an end view taken along line 6b-6b in FIG. 6C, diagrammatically illustrating a step of singulating the wavelength conversion member sheet. [Figure 6E] 1A to 1C are plan views each showing a schematic diagram of a process for installing a light-emitting element. [Figure 6F] FIG. 6C is an end view taken along line 6c-6c in FIG. 6E, illustrating a process of providing the light-emitting element. [Figure 6G] FIG. 11 is a plan view illustrating a process of supplying a reflective member material. [Figure 6H] FIG. 6D is an end view taken along line 6d-6d in FIG. 6G, illustrating a step of supplying a reflective member material. [Figure 6I] FIG. 11 is a plan view showing a schematic diagram of a grinding process of a reflective member material. [Figure 6J] 6E is an end view taken along line 6e-6e in FIG. 6I, illustrating a grinding process for the reflective member material. FIG. [Figure 6K] FIG. 11 is a plan view showing a dicing process. [Figure 6L] FIG. 6F is an end view taken along line 6f-6f in FIG. 6K, illustrating a dicing process step. [Figure 6M] FIG. 2 is a plan view showing a schematic diagram of the obtained light-emitting unit assembly. [Figure 6N] FIG. 6G is an end view taken along line 6g-6g in FIG. 6M, which diagrammatically illustrates the obtained light-emitting unit assembly. [Figure 6O] FIG. 2 is a bottom view showing a schematic diagram of the obtained light-emitting unit assembly. [Figure 7A] 11 is a plan view showing a schematic diagram of a preparation process of a light-emitting element assembly plate whose side surfaces are covered with a reflective member material. FIG. [Figure 7B] 7A is an end view taken along line 7a-7a in FIG. 7A, illustrating a preparation step of a light-emitting element assembly plate whose sides are covered with a reflective member material. FIG. [Figure 7C] FIG. 11 is a plan view showing a schematic diagram of a phosphor-containing block installation process. [Figure 7D]FIG. 7D is an end view taken along line 7b-7b in FIG. 7C, illustrating a process of installing the phosphor-containing block. [Figure 7E] FIG. 11 is a plan view illustrating a process of supplying a reflective member material. [Figure 7F] 7C is an end view taken along line 7C-7C in FIG. 7E, illustrating a step of supplying a reflective member material. [Figure 7G] FIG. 11 is a plan view showing a schematic diagram of a grinding process of a reflective member material. [Figure 7H] FIG. 7D is an end view taken along line 7d-7d in FIG. 7G, illustrating a grinding process of the reflective member material. [Figure 7I] FIG. 11 is a plan view showing a dicing process. [Figure 7J] 7E is an end view taken along line 7e-7e in FIG. 7I, showing a dicing process step. [Figure 7K] FIG. 2 is a plan view showing a schematic diagram of the obtained light-emitting unit assembly. [Figure 7L] FIG. 7F is an end view taken along line 7f-7f in FIG. 7K, which diagrammatically illustrates the obtained light-emitting unit assembly. [Figure 7M] FIG. 2 is a bottom view showing a schematic diagram of the obtained light-emitting unit assembly. [Figure 8A] 11 is a plan view showing a schematic diagram of a preparation step of a reflecting member plate. FIG. [Figure 8B] 8B is an end view taken along line 8a-8a in FIG. 8A, illustrating a preparation step of a reflecting member plate. [Figure 8C] 11A to 11C are plan views each showing a schematic diagram of a punching process for a reflecting member plate. [Figure 8D] 8B is an end view taken along line 8b-8b in FIG. 8C, illustrating a punching step of the reflecting member plate. [Figure 8E] FIG. 11 is a plan view that illustrates a phosphor-containing resin material supplying step. [Figure 8F] 8C is an end view taken along line 8c-8c in FIG. 8E, illustrating a step of supplying the phosphor-containing resin material. FIG. [Figure 8G] FIG. 11 is a plan view showing a schematic diagram of a punching process for a phosphor-containing resin material. [Figure 8H] FIG. 8D is an end view taken along line 8d-8d in FIG. 8G, and is a schematic diagram showing a punching step of the phosphor-containing resin material. [Figure 8I] FIG. 11 is a plan view illustrating a process of supplying a reflective member material. [Figure 8J] 8E is an end view taken along line 8e-8e in FIG. 8I, illustrating a step of supplying a reflective member material. [Figure 8K] FIG. 4 is a plan view showing a schematic diagram of a punching process for a reflective member material. [Figure 8L] 8F is an end view taken along line 8f-8f of FIG. 8K, illustrating a schematic diagram of a punching process of the reflective member material. [Figure 8M] FIG. 11 is a plan view that illustrates a phosphor-containing resin material supplying step. [Figure 8N] 8A is an end view taken along line 8g-8g in FIG. 8M, and is a schematic diagram showing the step of supplying the phosphor-containing resin material. [Figure 8O] 11 is a plan view showing a schematic diagram of a process for installing an assembly plate of light-emitting elements whose sides are covered with a reflective member material. FIG. [Figure 8P] 8H is an end view taken along line 8h-8h in FIG. 8O, which diagrammatically illustrates a process of installing a light-emitting element assembly plate whose sides are covered with a reflective member material. FIG. [Figure 8Q] FIG. 11 is a plan view showing a dicing process. [Figure 8R] 8I is an end view taken along line 8i-8i in FIG. 8Q, showing a dicing process step. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Light source device> Hereinafter, a light source device according to an embodiment of the present invention will be described with reference to the drawings.

[0010] The embodiments described are for embodying the technical idea of ​​the present invention, and the present invention is not limited to those described below unless otherwise specified. In each drawing, the same reference numerals may be attached to components having the same functions. In consideration of the explanation or ease of understanding of the main points, the embodiments may be shown separately for convenience, but partial replacement or combination of the configurations shown in different embodiments is possible. In addition, in the embodiments described below, the description of matters common to the above will be omitted, and only the differences will be described. In particular, similar effects due to similar configurations will not be mentioned in each embodiment. The size and positional relationship of the components shown in each drawing may be exaggerated to clarify the explanation.

[0011] [Embodiment 1] FIG. 1A is a plan view showing a schematic configuration of the light source device of the first embodiment. FIG. 1B is an end view taken along line AA in FIG. 1A, showing a schematic configuration of the light source device of the first embodiment. FIG. 2A is a plan view showing a schematic configuration of a first light-emitting section and a second light-emitting section of the light source device of the first embodiment. FIG. 3A is an end view showing a schematic configuration of a light-emitting section assembly (including a first light-emitting section and a second light-emitting section) before light emission. FIG. 3B is an end view showing a schematic configuration of the first light-emitting section during light emission. FIG. 3C is an end view showing a schematic configuration of the second light-emitting section during light emission.

[0012] The light source device 100 of the first embodiment includes a light emitting unit assembly 10 and a lens 20. The light emitting unit assembly 10 includes a first light emitting unit 10A having a first light emitting element 12A, and a second light emitting unit having a plurality of second light emitting elements 12B, which are provided at a distance along the outer periphery of the first light emitting unit 10A in a plan view. The light emitting unit assembly 10 is an integral combination of the first light emitting unit 10A and the second light emitting unit 10B. A lens 20 is disposed on the light emitting unit assembly 10. The first light emitting element 12A and the plurality of second light emitting elements 12B are arranged vertically and horizontally, and each of them can be independently turned on and off. The full angle at half maximum of the light distribution of the light emitted from the first light emitting unit 10A and emitted from the lens 20 is different from the full angle at half maximum of the light distribution of the light emitted from the second light emitting unit 10B and emitted from the lens 20. The light source device of the first embodiment can be suitably used as a flash light source.

[0013] In this specification, the term "light-emitting unit assembly" refers to a structure in which two or more light-emitting units are combined together to form a single whole. In this specification, the lens 20 includes a Fresnel lens. The term "Fresnel lens" refers to a type of collimating lens that refracts light emitted from the light-emitting units to provide directionality toward a desired irradiation area.

[0014] As described later, the first light-emitting unit 10A and the second light-emitting unit 10B each have a light-emitting element such as an LED (Light Emitting Diode). The light emitted from the first light-emitting unit 10A and the second light-emitting unit 10B has a light distribution intensity characteristic (called a Lambertian distribution or Lambertian light distribution) in which the amount of light is maximum in the direction of the surface normal of the light-emitting surface, and the amount of light gradually decreases as the inclination of the light ray from the surface normal increases. Here, in this specification, the light distribution of the light emitted from the lens includes four patterns, which are broadly divided into an ultra-wide-angle light distribution, a wide-angle light distribution, an ultra-narrow-angle light distribution, and a narrow-angle light distribution. The "wide-angle light distribution" refers to a light distribution having a full-width half-maximum larger than the full-width half-maximum in the standard Lambertian light distribution of the first light-emitting unit. "Ultra-wide-angle light distribution" refers to a light distribution having a full-width half-maximum larger than the standard full-width half-maximum (i.e., a full-width half-maximum larger than the wide-angle light distribution) when the full-width half-maximum in the Lambertian distribution of the first light-emitting unit is taken as the standard full-width half-maximum. "Narrow-angle light distribution" refers to a light distribution having a full-width half-maximum smaller than the standard full-width half-maximum (i.e., a full-width half-maximum smaller than the narrow-angle light distribution) when the full-width half-maximum in the Lambertian distribution of the first light-emitting unit is taken as the standard full-width half-maximum. "Ultra-narrow-angle light distribution" refers to a light distribution having a full-width half-maximum smaller than the standard full-width half-maximum (i.e., a full-width half-maximum smaller than the narrow-angle light distribution) when the full-width half-maximum in the Lambertian distribution of the first light-emitting unit is taken as the standard full-width half-maximum. The full-width at half maximum of the light distribution of light emitted from first light-emitting unit 10A and output from lens 20 is different from the full-width at half maximum of the light distribution of light emitted from second light-emitting unit 10B and output from lens 20 means that the light emitted from first light-emitting unit 10A and output from lens 20 and the light emitted from second light-emitting unit 10B and output from lens 20 have different full-width at half maximum of the light distribution for the above-mentioned four patterns of light distribution. In the case of wide-angle light distribution control and ultra-wide-angle light distribution control, the full-width at half maximum of the light distribution of light emitted from first light-emitting unit 10A and output from lens 20 can be larger than the full-width at half maximum of the light distribution of light emitted from second light-emitting unit 10B and output from lens 20, based on the full-width at half maximum of the light distribution of light emitted from second light-emitting unit 10B being larger than the full-width at half maximum of the above-mentioned standard time.In addition, taking the cases of narrow-angle light distribution control and ultra-narrow-angle light distribution control as examples, based on the fact that the full-angle at half maximum of the light distribution of light emitted from second light-emitting unit 10B and exiting lens 20 is smaller than the full-angle at half maximum of the standard condition, the full-angle at half maximum of the light distribution of light emitted from first light-emitting unit 10A and exiting lens 20 can be smaller than the full-angle at half maximum of the light distribution of light emitted from second light-emitting unit 10B and exiting lens 20.

[0015] In the light source device 100 of the first embodiment, the light distribution of the light emitted from the first light-emitting unit 10A and the second light-emitting unit 10B can be controlled by the single lens 20 without using two or more lenses. This makes it possible to realize two or more patterns of light distribution by the single lens 20.

[0016] The lens 20 is disposed on the light emitting unit assembly 10 so as to straddle the first light emitting unit 10A and the second light emitting unit 10B. Specifically, one lens 20 is disposed on one light emitting unit assembly 10. That is, in a plan view, the first light emitting unit 10A and the second light emitting unit 10B (corresponding to the light emitting unit assembly 10) are disposed within the area of ​​one lens 20. In other words, light emitting unit assemblies 10 consisting of two or more light emitting units share one lens 20. As an example, one light emitting unit assembly 10 is disposed within the area of ​​one Fresnel lens.

[0017] According to the light source device 100 of the first embodiment, two or more patterns of light distribution are possible by one lens 20 and the light emitting unit assembly 10 located within the area of ​​one lens 20. Therefore, the light source device 100 can be made compact and can be suitably used in smartphones.

[0018] The light emitting part assembly 10 and the lens 20, which are components of the light source device 100 of the first embodiment, will be described below.

[0019] (Light emitting part assembly 10) As shown in FIG. 1A, the light emitting unit assembly 10 is an integral combination of at least two light emitting units (a first light emitting unit 10A and a second light emitting unit 10B). Specifically, the light emitting unit assembly 10 has the first light emitting unit 10A and the second light emitting unit 10B, and the second light emitting unit 10B is provided so as to surround at least a part of the first light emitting unit 10A in a plan view. As shown in FIG. 2A, the first light emitting unit 10A is provided in an area 50 inside the second light emitting unit 10B in a plan view. That is, the first light emitting unit 10A is located in the central area of ​​the light emitting unit assembly 10. It is preferable that the first light emitting unit 10A and the second light emitting unit 10B are not in direct contact with each other in order to prevent light from propagating between them.

[0020] In the light source device 100 of the first embodiment, the first light-emitting section 10A and the second light-emitting section 10B can emit first light of substantially the same color. The first light-emitting section 10A and the second light-emitting section 10B are each connected to wiring on the substrate 30. In this embodiment, substantially the same color means that the light emitted from each of the first light-emitting section and the second light-emitting section has a color difference (corresponding to a difference in chromaticity) Δu'v' of 0.05 or less in the CIE 1976 (L*, u*, v*) color space.

[0021] Shape of the first light-emitting portion and the second light-emitting portion The planar shape of the first light emitting portion 10A may be a square, a rectangle, a circle, an ellipse, and / or a polygon. 1 and inner part 10B 2 The planar shape of the outer portion 10B of the second light-emitting portion 10B may be a square, a rectangle, a circle, an ellipse, and / or a polygon in a planar view. 1 and inner part 10B 2 Although not particularly limited, from the viewpoint of suitably securing the integrity of the light-emitting unit assembly 10, the planar contour of the first light-emitting unit 10A is preferably the same as the outer portion 10B of the second light-emitting unit 10B. 1 Planar profile and inner part 10B 2 It is preferable that the planar profile of the slit 100 should be similar to that of the slit 100.

[0022] The first light-emitting section 10A includes a first light-emitting element 12A. As an example, as shown in FIG. 1B, the first light-emitting section 10A may include a wavelength conversion member 11A provided on the light-emitting surface of the first light-emitting element 12A in addition to the first light-emitting element 12A. The second light-emitting section 10B includes a second light-emitting element 12B. As an example, as shown in FIG. 1B, the second light-emitting section 10B may include a wavelength conversion member 11B provided on the light-emitting surface of the second light-emitting element 12B in addition to the second light-emitting element 12B. One wavelength conversion member 11A may be provided on the light-emitting surface of each of the first light-emitting elements 12A, or a plurality of the first light-emitting elements 12A may have a common wavelength conversion member 11A. Also, one wavelength conversion member 11B may be provided on the light-emitting surface of each of the second light-emitting elements 12B, or a plurality of the second light-emitting elements 12B may have a common wavelength conversion member 11B. It is preferable that the wavelength conversion member 11B is arranged so as to surround the outer periphery of the first light-emitting section 10A. A single wavelength conversion member 11B surrounding the outer periphery of the first light emitting section 10A may be disposed on the light emitting surface side of the second light emitting element 12B.

[0023] Although not particularly limited, the ratio of the first light-emitting section 10A to the light-emitting section assembly 10 in a planar view can be 50 area% or more and 90 area% or less, 60 area% or more and 80 area% or less, for example, 70 area%. The ratio of the second light-emitting section 10B to the light-emitting section assembly 10 in a planar view can be 10 area% or more and 50 area% or less, 20 area% or more and 40 area% or less, for example, 30 area%. Note that the ratio of the first light-emitting section 10A to the light-emitting section assembly 10 in a planar view refers to the area% of the wavelength conversion member 11A in a planar view, and the ratio of the second light-emitting section 10B to the light-emitting section assembly 10 in a planar view refers to the area% of the wavelength conversion member 11B in a planar view.

[0024] In both the present embodiment 1 and the embodiment 2 described below, the second light-emitting unit 10BI and the fourth light-emitting unit 10BII, which are components of the first light-emitting unit 10I and the second light-emitting unit 10II, respectively, can be provided so as to surround at least a part of the first light-emitting unit 10AI and the third light-emitting unit 10AII. The first light-emitting unit 10AI and the third light-emitting unit 10AII, which are components of the first light-emitting unit 10I and the second light-emitting unit 10II, include, for example, the first light-emitting element 12AI and the third light-emitting element 12AII, and the wavelength conversion member 11AI and the wavelength conversion member 11AII provided on the light-emitting surface of the first light-emitting element 12AI and the third light-emitting element 12AII, respectively. In addition, the second light-emitting section 10BI and the fourth light-emitting section 10BII, which are components of the first light-emitting section assembly 10I and the second light-emitting section assembly 10II, include a second light-emitting element 12BI and a fourth light-emitting element 12BII, and a wavelength conversion member 11BI and a wavelength conversion member 11BII provided on the light-emitting surfaces of the second light-emitting element 12BI and the fourth light-emitting element 12BII, respectively.

[0025] In this case, in both the above-mentioned embodiment 1 and the embodiment 2 described below, the second light-emitting section can be roughly divided into two types.

[0026] Fig. 2B is a plan view showing a first light-emitting section surrounded by a second light-emitting section having at least two spaced apart light-emitting elements. Fig. 2C is a cross-sectional view showing a cross section of the second light-emitting section taken along lines III-III and IV-IV in Fig. 2B. Fig. 2D is a bottom view showing a light-emitting section assembly.

[0027] As shown in Figures 2B, 2C, and 2D, the second light-emitting unit 10BY has at least two second light-emitting elements 12BY, and the at least two second light-emitting elements 12BY are provided adjacent to each other so as to surround at least a part of the first light-emitting unit 10AY in a plan view. That is, the second light-emitting unit 10BY surrounding the first light-emitting unit 10AY having the first light-emitting element 12AY has at least two second light-emitting elements 12BY that are spaced apart. The first light-emitting element 12AY and the multiple second light-emitting elements 12BY are arranged vertically and horizontally (in other words, arranged in rows and columns) to form a lattice shape.

[0028] In this case, at least two second light-emitting elements 12BY arranged at a distance from each other can be independently controlled to emit light from the second light-emitting section 10BY. In addition, in the second light-emitting section 10BY surrounding the first light-emitting section 10AY, it is preferable that a reflecting member 13 is arranged on the side of each light-emitting element arranged at a distance from each other. Furthermore, it is preferable that a reflecting member 13 is also arranged between the side of the wavelength conversion member 11BY located on one adjacent second light-emitting element 12BY and the side of the wavelength conversion member 11BY located on the other second light-emitting element 12BY. In other words, it is preferable that the reflecting member 13 is arranged between adjacent wavelength conversion members 11BY. This makes it possible to prevent color unevenness and brightness unevenness caused by the light emitted from the adjacent first light-emitting element 12AY and second light-emitting element 12BY.

[0029] 2B to 2D, since the adjacent second light-emitting elements 12BY of the second light-emitting section 10BY are spaced apart from each other, the second light-emitting elements 12BY are individually connected to the wiring of the substrate connected below the second light-emitting section 10BY. This allows at least two second light-emitting elements 12BY to be simultaneously and independently controlled for lighting, or alternatively, at least two second light-emitting elements 12BY to be individually and independently controlled for lighting at different timings.

[0030] 2B and 2C, the first light-emitting element 12AY, the wavelength conversion member 11AY, the second light-emitting element 12BY, and the wavelength conversion member 11BY are all arranged at equal intervals, but this is not limited thereto. That is, the intervals between adjacent light-emitting elements or between adjacent wavelength conversion members may be different. Also, in FIGS. 2B to 2D, one first light-emitting element 12AY is arranged as the first light-emitting section 10AY, but this is not limited thereto. That is, the first light-emitting section 10AY may have two or more first light-emitting elements 12AY. In this case, it is preferable that the two or more light-emitting elements AY are arranged in a matrix.

[0031] Fig. 2E is a plan view showing a second light-emitting section having one light-emitting element spaced apart from the first light-emitting section along the outer periphery thereof. Fig. 2F is an end view showing a cross section of the second light-emitting section taken along line II in Fig. 2E. Fig. 2G is an end view showing a cross section of the light-emitting section assembly taken along line II-II in Fig. 2E.

[0032] As shown in Figures 2E, 2F and 2G, the second light-emitting section 10BX is composed of one second light-emitting element 12BX, and in a planar view, the second light-emitting section is arranged at a distance along the outer periphery of the first light-emitting section and is composed of one second light-emitting element.

[0033] In this case, the second light-emitting section 10BX having one second light-emitting element 12BX can be independently controlled to emit light.

[0034] In addition, in Fig. 2E, Fig. 2F, and Fig. 2G, the second light emitting element 12BX of the second light emitting unit 10BX is shaped to surround the outer periphery of the first light emitting unit 10AX in a continuous manner, so that the area where the light emitting surface of the second light emitting element 12BX and the wavelength conversion member 11BX directly contact each other can be secured widely. This allows light to be directly guided from the second light emitting element 12BX into the wavelength conversion member 11BX, so that the wavelength of the light can be converted more efficiently. In addition, the connection between the second light emitting unit 10BX and the wiring of the board connected below the second light emitting unit 10BX can also be simplified.

[0035] The first light emitting element 12A of the first light emitting section 10A and the second light emitting element 12B of the second light emitting section may have any shape in plan view. For example, the first light emitting element 12A of the first light emitting section 10A and the second light emitting element 12B of the second light emitting section may be square, rectangular, and / or polygonal in plan view. When the first light emitting element 12A is rectangular in plan view, the first light emitting element 12A of the first light emitting section 10A may have, for example, vertical and horizontal dimensions in plan view of 200 μm to 2 mm, preferably 500 μm to 1.5 mm, and more preferably 800 μm to 1 mm. Also, as described later, when the second light emitting element 12B of the second light emitting section 10B is rectangular in plan view and is composed of one second light emitting element BX, the vertical and horizontal dimensions of the outer contour of the second light emitting element 12B may be, for example, 500 μm to 3 mm, preferably 1 mm to 2.5 mm, and more preferably 1.5 mm to 2.0 mm in plan view. When the second light-emitting element 12B of the second light-emitting section 10B consists of one second light-emitting element 12BX, the vertical and horizontal dimensions of the inner contour of the second light-emitting element 12BX can be, for example, 200 μm or more and 2 mm or less, preferably 500 μm or more and 1.5 mm or less, and more preferably 800 μm or more and 1 mm or less in a planar view.

[0036] Furthermore, when the second light-emitting unit 10B has a plurality of rectangular second light-emitting elements 12B spaced apart from each other, each second light-emitting element 12B may have, for example, a length and width dimension of 100 μm to 2 mm, preferably 200 μm to 1.5 mm in a plan view. The height (height from the light-emitting surface to the electrode surface) of each of the first light-emitting element 12A of the first light-emitting unit 10A and the second light-emitting element 12B (or the second light-emitting element 12BX) of the second light-emitting unit may be 10 μm to 300 μm, preferably 150 μm to 300 μm.

[0037] The substrate 30 is a wiring substrate having positive and negative wiring provided on its upper surface. For example, by providing an input / output terminal for each wiring corresponding to the first light emitting element 12A and the second light emitting element 12B, it is possible to independently control the lighting of each light emitting element as described above, and therefore it is also possible to independently control the lighting of each light emitting portion. The main material of the substrate 30 is preferably an insulating material that is difficult for light from the light emitting element to transmit through. For example, the substrate 30 may include a ceramic material and a resin material.

[0038] The light-emitting element (the first light-emitting element 12A, the second light-emitting element 12B, the third light-emitting element 12AII, and the fourth light-emitting element 12BII) includes a semiconductor laminate and at least a pair of electrodes 40 (a positive electrode 41 and a negative electrode 42) having different polarities. The light-emitting element includes a light-emitting surface (also called a main light-emitting surface), a side surface extending in a different direction (for example, a vertical direction) from the light-emitting surface, and an electrode surface on the opposite side of the light-emitting surface on which at least a pair of positive and negative electrodes are provided. As the light-emitting element, a semiconductor light-emitting element capable of emitting light having an arbitrary wavelength can be selected. For example, a light-emitting diode or the like can be selected as the light-emitting element. As an example, a light-emitting element that emits blue light can be used. Without being limited thereto, a light-emitting element that emits light of a color other than blue light can be used.

[0039] For example, a nitride-based semiconductor (InxAlyGa1-x-yN, 0≦X, 0≦Y, X+Y≦1) can be used as a semiconductor laminate of a light-emitting element capable of emitting blue light. In this case, the nitride-based semiconductor light-emitting element has, for example, a sapphire substrate and a nitride-based semiconductor laminate structure laminated on the sapphire substrate. The nitride-based semiconductor laminate structure includes a light-emitting layer, and an n-type nitride-based semiconductor layer and a p-type nitride-based semiconductor layer arranged to sandwich the light-emitting layer. An n-side electrode and a p-side electrode are electrically connected to the n-type nitride-based semiconductor layer and the p-type nitride-based semiconductor layer, respectively.

[0040] The wavelength conversion members (wavelength conversion members 11A and 11B) are provided on the light emitting surface side of the light emitting element, and are capable of absorbing light emitted from the light emitting element and converting it into light of a different wavelength. The wavelength conversion member contains a phosphor or the like in a base material such as resin or glass. The phosphor is an yttrium-aluminum-garnet phosphor (for example, Y 3 (Al,Ga) 5 O 12 :Ce), lutetium aluminum garnet phosphors (e.g., Lu 3 (Al,Ga) 5 O 12 :Ce), terbium aluminum garnet phosphors (e.g., Tb 3 (Al,Ga) 5 O 12 :Ce), β-sialon phosphors (e.g., (Si,Al) 3 (O,N) 4 :Eu), α-type sialon phosphors (e.g., Ca(Si,Al) 12 (O,N) 16 :Eu), CASN phosphors (e.g., CaAlSiN 3 :Eu) or SCASN phosphors (e.g., (Sr,Ca)AlSiN 3 Nitride-based phosphors such as KSF phosphors (e.g., K 2 SiF 6 :Mn), KSAF phosphors (e.g., K 2 (Si,Al)F 6 :Mn) or MGF phosphors (e.g., 3.5MgO 0.5MgF 2 ·GeO 2 Fluoride phosphors such as CsPb(F,Cl,Br,I) and phosphors with a perovskite structure such as CsPb(F,Cl,Br,I) 3 ), or quantum dot phosphors (e.g., CdSe, InP, AgInS 2 , AgInSe 2 , AgInGaS 2 or CuAgInS 2 The phosphor may contain one of the above phosphors alone, or may contain a plurality of types of phosphors.

[0041] Furthermore, each of first light-emitting section 10A and second light-emitting section 10B may further be provided with a reflecting member 13 that covers the side surfaces of the light-emitting element and the side surfaces of the wavelength conversion member except for the upper surfaces of wavelength conversion member 11A and wavelength conversion member 11B. Reflecting member 13 is a member that makes it easier to guide light emitted from the light-emitting element in a predetermined direction.

[0042] The reflective member 13 may be made of, for example, a base resin and a light-reflecting substance contained in the base material. The base resin may be a silicone resin, a modified silicone resin, an epoxy resin, a modified epoxy resin, an acrylic resin, or a hybrid resin containing at least one of these resins.

[0043] As the light-reflecting substance, at least one selected from titanium oxide, silicon oxide, zirconium oxide, magnesium oxide, yttrium oxide, yttria-stabilized zirconia, calcium carbonate, calcium hydroxide, calcium silicate, niobium oxide, zinc oxide, barium titanate, potassium titanate, magnesium fluoride, alumina, aluminum nitride, boron nitride, mullite, and the like can be used.

[0044] In order to suitably reflect the light emitted from the light-emitting element, the reflective member 13 may be a white resin having a reflectance of, for example, 60% or more for the light, and is preferably a white resin having a reflectance of 90% or more.

[0045] A light-transmitting member can be provided between the side surface of the light-emitting element and the reflecting member 13 and / or on the light-emitting surface of the light-emitting element. Examples of materials for the light-transmitting member include silicone resin, epoxy resin, and acrylic resin.

[0046] (Lens 20) The lens 20 is disposed on the light-emitting unit assembly 10 so as to straddle the first light-emitting unit 10A and the second light-emitting unit 10B. As a result, the lens 20 allows light emitted from each light-emitting unit to be incident on the lens 20 and emits the incident light in a predetermined direction. Specifically, one lens 20 disposed on one light-emitting unit assembly 10 has an entrance surface 20a on which light emitted from the light-emitting unit assembly 10 (light emitted from the first light-emitting unit 10A and the second light-emitting unit 10B) is incident and an exit surface 20b from which the light is emitted. For example, a Fresnel lens can be used as the lens 20, and the entrance surface (corresponding to the lower surface) 20a of the lens 20 has a plurality of concentric circular convex portions (see FIG. 1B, FIG. 3A to FIG. 3C, FIG. 4A to FIG. 4F, etc.). Lens 20 includes on its lower surface 20a, in order from the center of lens 20, a first convex portion 21, a second convex portion 22, a third convex portion 23, a fourth convex portion 24, a fifth convex portion 25, and a sixth convex portion 26. An exit surface (corresponding to the upper surface) 20b of one lens 20 is flat.

[0047] The first convex portion 21 located at the center may be configured with a convex curved surface 21a as shown in Fig. 1B, but from the viewpoint of light distribution characteristics, the first convex portion 21 may have a plurality of minute convex members 21b arranged concentrically around the convex curved surface 21a (see Figs. 4A and 4D). Each minute convex member 21b has an incident surface and a reflecting surface.

[0048] 1B, the area size of the convexly curved surface of the first convex portion 21 in the center is larger than the area size of the other convex portions in the end view. However, without being limited thereto, the area size of the convexly curved surface of the first convex portion 21 in the center can be substantially the same as the area size of the other convex portions in consideration of the desired irradiation range of the light emitted from the lens emission surface (corresponding to the upper surface) 20b.

[0049] The second convex portion 22, the third convex portion 23, the fourth convex portion 24, the fifth convex portion 25, and the sixth convex portion 26 are each annular convex portions in a plan view. The second convex portion 22 has an incident surface 22a and a reflecting surface 22b, the third convex portion 23 has an incident surface 23a and a reflecting surface 23b, the fourth convex portion 24 has an incident surface 24a and a reflecting surface 24b, the fifth convex portion 25 has an incident surface 25a and a reflecting surface 25b, and the sixth convex portion 24 has an incident surface 24a and a reflecting surface 24b (see FIG. 1B).

[0050] The first light-emitting section 10A overlaps with the first convex section 21 of the lens 20 in a plan view, and is disposed so that the concentricity of the Fresnel lens of the lens 20 (in other words, the optical axis B) and the center of the first light-emitting section 10A substantially coincide with each other. In addition, the second light-emitting section 10B is disposed, for example, directly below the third convex section 23 and the fourth convex section 24 and on the inside below the fifth convex section 25 and the sixth convex section 24 in an end view.

[0051] Hereinafter, the path of the light emitted from the light emitting surface of each light emitting unit when passing through the lens 20 having each convex portion of the above configuration will be described (see FIG. 3A, FIG. 3B, FIG. 3C, and FIG. 4A to FIG. 4F). In this embodiment, for the purpose of explanation, the path of some of the light emitted from each light emitting unit may be illustrated as a light ray with an arrow. In addition, the angle between the light ray (or light) and the optical axis of the lens refers to the angle between the light ray of some of the light emitted from each light emitting unit and the optical axis of the lens in detail. The light ray and the optical axis of the lens may have an intersection point on the extension of each other, or may be in a twisted position. In this embodiment, the angle between the light ray and the optical axis of the lens refers to the angle between the light ray and the optical axis of the lens when the light ray is moved parallel to the optical axis of the lens and the light ray and the optical axis of the lens have an intersection point.

[0052] (When none of the light-emitting elements are lit) As described above, in the light source device 100 of the first embodiment, lighting can be controlled independently for each light emitting element. Therefore, the state in which none of the light emitting elements are turned on is the state shown in FIG.

[0053] (When the first light-emitting part 10A is turned on) Next, a case where the first light-emitting unit 10A is under lighting control will be illustrated (see FIG. 3B and FIG. 4A). In this case, the path of the light L1 emitted from the light-emitting surface of the first light-emitting unit 10A can be roughly divided into the following three cases. First case: A case in which light is emitted from the light emitting surface of the first light emitting unit 10A through the first convex portion 21 Second case: A case in which light is emitted from the light emitting surface of the first light emitting unit 10A through a convex portion (e.g., the second convex portion 22, the third convex portion 23, and the fourth convex portion 24) located closer to the first convex portion 21. Third Case: A case in which light is emitted through a convex portion (e.g., a fifth convex portion 25 and a sixth convex portion 26) located on the far side from the light emitting surface of the first light emitting portion 10A with respect to the first convex portion 21.

[0054] In the first case, the light emitted from the first light-emitting unit 10A is incident on the incident surface (convex curved surface 21a) of the first convex portion 21 and travels along the optical axis B of the lens 20. In the second case, as shown in FIG. 4A, the light emitted from the first light-emitting unit 10A is incident on, for example, the incident surfaces (incident surface 22a, incident surface 23a, and incident surface 24a) of the second convex portion 22, the third convex portion 23, and the fourth convex portion 24, and is then reflected by the reflecting surfaces (reflecting surface 22b, reflecting surface 23b, and reflecting surface 24b). In the third case, as shown in FIG. 4A, the light emitted from the first light-emitting unit 10A is incident on, for example, the incident surface 25a of the fifth convex portion and the incident surface 26a of the sixth convex portion 26, and is then reflected by the reflecting surface 25b of the fifth convex portion and the reflecting surface 26b of the sixth convex portion 26.

[0055] (When the second light-emitting part 10B is turned on) Next, a specific example will be described in which the second light-emitting unit 10B is under lighting control (see Figs. 3C and 4D). In this case, the path of the light L2 emitted from the light-emitting surface of the second light-emitting unit 10B can be roughly divided into the following two cases, the fourth case and the fifth case. Depending on the positional relationship between the second light-emitting unit 10B and the first convex portion 21, there may be cases in which light can be emitted from the light-emitting surface of the second light-emitting unit 10B via the first convex portion 21. Fourth case: A case in which light is emitted from the light emitting surface of the second light emitting unit 10B through a convex portion (e.g., the second convex portion 22, the third convex portion 23, and the fourth convex portion 24) located closer to the first convex portion 21. Fifth case: A case in which light is emitted through a convex portion (for example, a fifth convex portion 25 and a sixth convex portion 26) located on the far side from the light emitting surface of the second light emitting portion 10B relative to the first convex portion 21.

[0056] In the fourth case, the light emitted from the second light-emitting unit 10B may be incident on the respective entrance surfaces (entrance surface 22a, entrance surface 23a, and entrance surface 24a) of the second convex portion 22, the third convex portion 23, and the fourth convex portion 24, and then the incident light may be reflected on the respective reflection surfaces (reflection surface 22b, reflection surface 23b, and reflection surface 24b). Alternatively, the light incident from the second light-emitting unit 10B may be refracted in a direction away from the optical axis B without being reflected on the respective reflection surfaces (reflection surface 22b, reflection surface 23b, and reflection surface 24b), and may exit from the exit surface 20b of the lens 20. Similarly, in the fifth case, the light from the second light-emitting unit 10B may be incident on the respective entrance surfaces (entrance surface 25a and entrance surface 26a) of the fifth convex portion 25 and the sixth convex portion 26, and then the incident light may be reflected on the respective reflection surfaces (reflection surface 25b and reflection surface 26b). Alternatively, the light incident from the second light-emitting unit 10B may be refracted in a direction away from the optical axis B without being reflected by each reflecting surface (reflecting surface 25b and reflecting surface 26b), and may exit from the exit surface 20b of the lens 20.

[0057] Hereinafter, the third case will be specifically described as an example with reference to Figures 4B and 4C. Note that the matters described below are not limited to the third case, but can also be applied to the second case.

[0058] Ultra-wide-angle light distribution control 4B, in the third case, the light emitted from the first light-emitting unit 10A is incident, for example, from the incident surface 25a of the fifth convex portion and the incident surface 26a of the sixth convex portion 26, and is then reflected by the reflecting surface 25b of the fifth convex portion and the reflecting surface 26b of the sixth convex portion 26 so as to make an angle larger with the optical axis B. Similarly, in the second case, the light emitted from the first light-emitting unit 10A is incident, for example, from each of the incident surfaces (incident surface 22a, incident surface 23a, and incident surface 24a) of the second convex portion 22, the third convex portion 23, and the fourth convex portion 24, and is then reflected by each of the reflecting surfaces (reflecting surface 22b, reflecting surface 23b, and reflecting surface 24b) so as to make an angle larger with the optical axis B.

[0059] Here, as can be seen from FIG. 4B, the angle at which the light emitted from the first light-emitting unit 10A is directed toward each convex portion (for example, the second convex portion 22 to the sixth convex portion 26) is substantially the same regardless of which part of the light-emitting surface of the first light-emitting unit 10A the light is emitted from. For example, in an end view, an angle θ1 at which the light from one end of the first light-emitting unit 10A is directed toward an arbitrary point (in other words, a position) of the sixth convex portion 26 is substantially the same as an angle θ2 at which the light from the other end of the first light-emitting unit 10A is directed toward an arbitrary point of the sixth convex portion 26. In addition, the angle θ1 and the angle θ2 are also substantially the same as the angle at which the light from the central region of the first light-emitting unit 10A (in other words, a region other than the one end and the other end of the first light-emitting unit 10A) is directed toward an arbitrary point of the sixth convex portion 26. Note that the angles θ1 and θ2 refer to the angles formed by the light-emitting surface of the first light-emitting unit 10A and the light beam emitted from the first light-emitting unit 10A.

[0060] Therefore, regardless of which region of the light-emitting surface of the first light-emitting unit 10A the light is emitted from, the angle between the light reflected by the reflecting surface 26b of the sixth convex portion 26 and the optical axis B of the lens 20 can be controlled to approach a desired angle. From the same viewpoint, the angle between the light reflected by the reflecting surface of each convex portion and the optical axis B of the lens 20 can be easily controlled to approach a desired angle as the light emitted from the first light-emitting unit 10A moves from the second convex portion 22 to the fifth convex portion 25. In other words, since all the light emitted from the light-emitting surface of the first light-emitting unit 10A can be approximated as the path of the light L1, a lot of light can be controlled as intended. When the intended light distribution is an ultra-wide-angle light distribution, it approaches the ultra-wide-angle light distribution.

[0061] This desired angle (the angle at which the angle between the light reflected by the reflective surface of each convex portion and the optical axis B of the lens 20 becomes large) can be adjusted by changing the shape, size, and / or position, etc., of each convex portion of the lens 20. For example, by relatively reducing the angle between the optical axis B of the lens 20 and each reflective surface (22b, 23b, 24b, 25b, 26b) of each convex portion, the light distribution of the light emitted from the lens 20 can be controlled to an ultra-wide angle light distribution.

[0062] In this way, by changing (i.e., controlling) the distribution of light emitted from the first light-emitting unit 10A via each convex portion of the lens 20, for example the second convex portion 22 to the sixth convex portion 26, the range illuminated by the lens 20 (which can also be referred to as the illuminance distribution) can be further expanded, and the light from the first light-emitting unit 10A can be made to have an ultra-wide-angle distribution.

[0063] Next, the fifth case will be specifically described as an example with reference to Figures 4E and 4F. Note that the following description is not limited to the fifth case, but can also be applied to the fourth case.

[0064] Wide-angle light distribution control 4E, in the fifth case, the light from the second light-emitting unit 10B may be incident on each of the incident surfaces (incident surface 25a and incident surface 26a) of the fifth convex portion 25 and the sixth convex portion 26, and then the incident light may be reflected on each of the reflecting surfaces (reflecting surface 25b and reflecting surface 26b) "so that the angle with the optical axis B becomes small." Alternatively, the light incident from the second light-emitting unit 10B may be refracted in a direction away from the optical axis B without being reflected on each of the reflecting surfaces (reflecting surface 25b and reflecting surface 26b), and may exit from the exit surface 20b of the lens 20. Similarly, in the fourth case, the light emitted from the second light-emitting unit 10B may be incident on each of the incident surfaces (incident surface 22a, incident surface 23a, and incident surface 24a) of the second convex portion 22, the third convex portion 23, and the fourth convex portion 24, and then the incident light may be reflected on each reflective surface (reflective surface 22b, reflective surface 23b, and reflective surface 24b) "so that the angle with the optical axis B becomes small." Alternatively, the light incident from the second light-emitting unit 10B may be refracted in a direction away from the optical axis B without being reflected on each reflective surface (reflective surface 22b, reflective surface 23b, and reflective surface 24b), and may exit from the exit surface 20b of the lens 20.

[0065] Here, as can be seen from Fig. 4E, the angle at which the light emitted from the second light-emitting unit 10B is directed toward any point on each convex portion (for example, the second convex portion 22 to the sixth convex portion 26) differs depending on the position of the second light-emitting unit 10B relative to each convex portion. For example, in an end view, an angle θ3 at which the light from the second light-emitting unit 10B located on one side of the first light-emitting unit 10A and close to any point on the sixth convex portion 26 is directed toward any point on the sixth convex portion 26 is different from an angle θ4 at which the light from the second light-emitting unit 10B located on the other side of the first light-emitting unit 10A and far from any point on the sixth convex portion 26 is directed toward any point on the sixth convex portion 26. In detail, the difference between the angle θ3 and the angle θ4 is greater than the difference between the angle θ1 and the angle θ2. The angles θ3 and θ4 refer to the angles between the light emitting surface of second light emitting unit 10B and the light beam emitted from second light emitting unit 10B.

[0066] Therefore, the angle of the light beam directed toward an arbitrary point of the sixth convex portion 26 varies depending on the position of the second light-emitting portion 10B relative to the arbitrary point of the sixth convex portion 26, and therefore the light reflected by the reflecting surface 26b of the sixth convex portion 26 varies in angle with the optical axis B of the lens 20. From the same viewpoint, even when the light emitted from the second light-emitting portion 10B travels from the second convex portion 22 to the fifth convex portion 25, for example, the angle between the light reflected by each reflecting surface of each convex portion and the optical axis B of the lens 20 varies. As a result, the proportion of the light emitted from the second light-emitting portion 10B and controllable via each convex portion of the lens 20, for example, the second convex portion 22 to the sixth convex portion 26, is smaller than the proportion of the light emitted from the first light-emitting portion 10A and controllable. In other words, the path of the light L2 emitted from the light-emitting surface of the second light-emitting portion 10B is far from the path of the light L1 emitted from the first light-emitting portion 10A, so that the light that can be controlled as intended is reduced. When the intended light distribution is an ultra-wide-angle light distribution, it is difficult to control the light distribution to an ultra-wide-angle light distribution, and the light distribution approaches a Lambertian distribution, resulting in a wide-angle light distribution. Therefore, the second light-emitting unit 10B can be used for wide-angle light distribution control.

[0067] In order to increase the angle between the light reflected by each reflective surface of each convex portion and the optical axis B, adjustments can be made by changing the shape, size and / or position of each convex portion of the lens 20. For example, wide-angle light distribution can be controlled by relatively reducing the angle between the optical axis B of the lens 20 and the reflective surface of each convex portion (for example, to 10 degrees or more and 30 degrees or less).

[0068] Ultra-narrow light distribution control 4C, in the third case, the light emitted from the first light-emitting unit 10A is incident, for example, on the incident surface 25a of the fifth convex portion and the incident surface 26a of the sixth convex portion 26, and is then reflected by the reflecting surface 25b of the fifth convex portion and the reflecting surface 26b of the sixth convex portion 26 so as to reduce the angle between the light and the optical axis B of the lens 20. Similarly, in the second case, the light emitted from the first light-emitting unit 10A is incident, for example, on each of the incident surfaces (incident surface 22a, incident surface 23a, and incident surface 24a) of the second convex portion 22, the third convex portion 23, and the fourth convex portion 24, and is then reflected by each of the reflecting surfaces (reflecting surface 22b, reflecting surface 23b, and reflecting surface 24b) so as to reduce the angle between the light and the optical axis B of the lens 20.

[0069] 4C, the angle at which the light emitted from the first light-emitting unit 10A is directed toward each convex portion (for example, the second convex portion 22 to the sixth convex portion 26) is substantially the same regardless of the region of the light-emitting surface of the first light-emitting unit 10A from which the light is emitted. As an example, in an end view, the angle θ1 at which the light from one end of the first light-emitting unit 10A is directed toward any sixth convex portion 26 is substantially the same as the angle θ2 at which the light from the other end of the first light-emitting unit 10A is directed toward the sixth convex portion 26. In addition, the angle at which the light from the central region of the first light-emitting unit 10A (in other words, the region other than the one end and the other end of the first light-emitting unit 10A) is directed toward the sixth convex portion 26 is also substantially the same as the angle θ1 and the angle θ2.

[0070] Therefore, no matter which region of the light-emitting surface of the first light-emitting unit 10A the light is emitted from, the angle between the light reflected from the reflecting surface 26b of the sixth convex portion 26 and the optical axis B of the lens 20 can be controlled to approach a desired angle. From a similar perspective, even if the light emitted from the first light-emitting unit 10A travels from the second convex portion 22 to the fifth convex portion 25, for example, the angle between the light reflected from the reflecting surface of each convex portion and the optical axis B of the lens 20 can be controlled to approach a desired angle. In other words, since all the light emitted from the light-emitting surface of the first light-emitting unit 10A can be approximated as the path of the light L1, a lot of light can be controlled as intended. When the intended light distribution is an ultra-wide-angle light distribution, it approaches an ultra-wide-angle light distribution.

[0071] Furthermore, this desired angle (the angle at which the angle between the optical axis of the light reflected by the reflective surface of each convex portion and the optical axis B of lens 20 is small) can be adjusted, for example, by changing the shape, size and / or position of each convex portion of lens 20.

[0072] In this way, by changing (i.e., controlling) the distribution of light emitted from the first light-emitting unit 10A via each convex portion of the lens 20, for example the second convex portion 22 to the sixth convex portion 26, the range illuminated by the lens 20 (which can also be referred to as the illuminance distribution) can be made narrower, and the light from the first light-emitting unit 10A can be made to have an ultra-narrow angle distribution.

[0073] Narrow-angle light distribution control 4F, in the fifth case, the light from the second light-emitting unit 10B may be incident on each of the incident surfaces (incident surface 25a and incident surface 26a) of the fifth convex portion 25 and the sixth convex portion 26, and then the incident light may be reflected on each of the reflecting surfaces (reflecting surface 25b and reflecting surface 26b) "so that the angle with the optical axis B becomes large." Alternatively, the light incident from the second light-emitting unit 10B may be refracted in a direction away from the optical axis B without being reflected on each of the reflecting surfaces (reflecting surface 25b and reflecting surface 26b), and may exit from the exit surface 20b of the lens 20. Similarly, in the fourth case, the light emitted from the second light-emitting unit 10B may be incident on each of the incident surfaces (incident surface 22a, incident surface 23a, and incident surface 24a) of the second convex portion 22, the third convex portion 23, and the fourth convex portion 24, and then the incident light may be reflected on each reflective surface (reflective surface 22b, reflective surface 23b, and reflective surface 24b) "so that the angle with the optical axis B becomes large." Alternatively, the light incident from the second light-emitting unit 10B may be refracted in a direction away from the optical axis B without being reflected on each reflective surface (reflective surface 22b, reflective surface 23b, and reflective surface 24b), and may exit from the exit surface 20b of the lens 20.

[0074] Here, as can be seen from Fig. 4F, the angle at which the light emitted from the second light-emitting unit 10B is directed toward each convex portion (for example, the second convex portion 22 to the sixth convex portion 26) differs depending on the position of the second light-emitting unit 10B relative to each convex portion. For example, in an end view, an angle θ3 at which the light from a second light-emitting unit 10B located on one side of the first light-emitting unit 10A and near any sixth convex portion 26 is directed toward the sixth convex portion 26 is different from an angle θ4 at which the light from a second light-emitting unit 10B located on the other side of the first light-emitting unit 10A and far from the sixth convex portion 26 is directed toward the sixth convex portion 26. In detail, the difference between the angle θ3 and the angle θ4 is greater than the difference between the angle θ1 and the angle θ2.

[0075] Therefore, the angle of the light reflected by the reflecting surface 26b of the sixth convex portion 26 varies with the optical axis B due to the difference in the position of the second light-emitting portion 10B relative to any sixth convex portion 26. From the same viewpoint, even if the light emitted from the second light-emitting portion 10B travels from the second convex portion 22 to the fifth convex portion 25, the angle of the light reflected by each reflecting surface of each convex portion and the optical axis B varies. As a result, the proportion of the light that can be controlled and emitted from the second light-emitting portion 10B via each convex portion of the lens 20, for example, the second convex portion 22 to the sixth convex portion 26, is smaller than the proportion of the light that can be controlled and emitted from the first light-emitting portion 10A. In other words, the path of the light L2 emitted from the light-emitting surface of the second light-emitting portion 10B is far from the path of the light L1 emitted from the first light-emitting portion 10A, so that the light that can be controlled as intended is reduced. When the intended light distribution is an extremely narrow-angle light distribution, it is difficult to control it to an extremely narrow-angle light distribution, and the light distribution approaches a Lambertian distribution and becomes a narrow-angle light distribution. Therefore, the second light-emitting unit 10B can be used for narrow-angle light distribution control.

[0076] In order to reduce the angle between the light reflected by each reflective surface of each convex portion and the optical axis B, adjustments can be made by changing the shape, size and / or position of each convex portion of lens 20. For example, narrow-angle light distribution can be controlled by making the angle between the optical axis B of lens 20 and the reflective surface of each convex portion relatively larger than that in wide-angle light distribution (for example, to 35 degrees or more and 50 degrees or less).

[0077] For the above reasons, a greater proportion of the light emitted from the first light-emitting unit 10A located at the center of the light-emitting unit assembly 10 can be controlled by the lens 20 than the light emitted from the second light-emitting unit 10B provided at a distance along the outer periphery of the first light-emitting unit 10A, so the light from the first light-emitting unit 10A can be adjusted to an ultra-wide-angle light distribution or an ultra-narrow-angle light distribution. On the other hand, a smaller proportion of the light emitted from the second light-emitting unit 10B provided at a distance along the outer periphery of the first light-emitting unit 10A can be controlled by the lens 20 than the light emitted from the first light-emitting unit 10A, so the light from the second light-emitting unit 10B can be adjusted to a wide-angle light distribution or a narrow-angle light distribution.

[0078] In this way, since the position of the first light-emitting unit 10A relative to the lens 20 is easy to control the light, the light distribution of the first light-emitting unit 10A can be changed significantly by the lens 20. That is, the traveling direction of most of the light emitted from the first light-emitting unit 10A can be changed significantly by the lens 20. In contrast, since the position of the second light-emitting unit 10B relative to the lens 20 is difficult to control the light, the light distribution of the second light-emitting unit 10B does not change significantly by the lens 20. That is, it is difficult to change the traveling direction of the light emitted from the second light-emitting unit 10B significantly by the lens 20. Therefore, the light distribution angle of the light emitted from the first light-emitting unit 10A changes more significantly by the lens 20 than the light distribution angle of the light emitted from the second light-emitting unit 10B. In the light source device 100 of the first embodiment, light distribution control including four patterns of ultra-wide-angle light distribution, wide-angle light distribution, ultra-narrow-angle light distribution, and narrow-angle light distribution is possible by utilizing relatively different light distributions such as light distribution using the first light-emitting unit 10A by the lens 20 and light distribution using the second light-emitting unit 10B by the lens 20. Specifically, due to differences in the positions, shapes, etc. of the light-emitting units and differences in the shapes, sizes, and / or positions, etc. of the convex portions of the lens 20, the amount of light whose traveling direction has changed among the light emitted from the first light-emitting unit 10A is made relatively larger than the amount of light whose traveling direction has changed among the light emitted from the second light-emitting unit 10B, thereby making it possible to control light distribution in two or more patterns using one lens 20 (one Fresnel lens). In more detail, light distribution control of two or more patterns means controlling the light distribution to be between two patterns of light distribution (for example, ultra-wide-angle light distribution and wide-angle light distribution, or ultra-narrow-angle light distribution and narrow-angle light distribution) by adjusting the output ratio of the first light-emitting unit 10A and the second light-emitting unit 10B, for example, by simultaneously making one stronger and the other weaker.

[0079] It is preferable that the light from the first light-emitting unit 10A and the second light-emitting unit 10B is emitted so as to spread in a direction away from the optical axis B of the lens 20, and then refracted by the lens 20 and travels in a direction toward the optical axis B of the lens 20. Specifically, it is preferable that the outermost convex portion with respect to the optical axis B and other convex portions adjacent thereto (corresponding to the fifth convex portion 25 mentioned above) are positioned outside the outer edge of the light-emitting unit assembly 10 in a plan view so that the light from the first light-emitting unit 10A and the second light-emitting unit 10B can be incident on each convex portion of the lens 20 in a direction away from the optical axis B of the lens 20 (particular attention should be paid to the outermost convex portion (corresponding to the sixth convex portion 26 mentioned above)).

[0080] [Embodiment 2] Fig. 5A is a plan view showing a schematic configuration of a light source device of embodiment 2. Fig. 5B is an end view taken along line BB in Fig. 5A, showing a schematic view of how the light distribution of each of the first light-emitting unit and the third light-emitting unit of the light-emitting unit assembly corresponding to each of the two Fresnel lenses is controlled by the lens. Fig. 5C is an end view taken along line BB in Fig. 5A, showing a schematic view of how the light distribution of each of the second light-emitting unit and the fourth light-emitting unit of the light-emitting unit assembly corresponding to each of the two Fresnel lenses is controlled by the lens.

[0081] The following describes a light source device 100α according to embodiment 2. Regarding embodiment 2, differences from embodiment 1 will be mainly described, and descriptions of contents that overlap with embodiment 1 will be omitted or simplified.

[0082] The light source device 100α of the second embodiment basically reflects the idea of ​​the light source device 100 of the first embodiment in which, in a plan view, a light emitting unit assembly 10 (hereinafter referred to as the first light emitting unit 10I) is arranged within the area of ​​one Fresnel lens (hereinafter referred to as the first Fresnel lens 20I) as the lens 20, but differs from the first embodiment only in that a second light emitting unit assembly 10II and a second lens 20II (hereinafter referred to as the second Fresnel lens 20II) are further used in addition to the first light emitting unit 10I and the first Fresnel lens 20I.

[0083] The light source device 100α of the second embodiment includes a compound lens 200 (hereinafter referred to as the lens 200) having a first Fresnel lens 20I and a second Fresnel lens 20II, a first light-emitting unit assembly 10I corresponding to the first Fresnel lens 20I, and a second light-emitting unit assembly 10II corresponding to the second Fresnel lens 20II. The first light-emitting unit assembly 10I includes a first light-emitting unit 10AI and a second light-emitting unit 10BI spaced apart from each other along the outer periphery of the first light-emitting unit 10AI. The first Fresnel lens 20I is disposed on the first light-emitting unit assembly 10I so as to straddle the first light-emitting unit 10AI and the second light-emitting unit 10BI. In other words, in a planar view, the first light-emitting section 10AI and the second light-emitting section 10BI (corresponding to the first light-emitting section combination 10I) are arranged within the area of ​​the first Fresnel lens 20I, and the concentricity of the first Fresnel lens 20I (in other words, the optical axis C) and the center of the first light-emitting section 10AI are approximately aligned.

[0084] The first light emitted from the first light-emitting unit 10AI and the second light-emitting unit 10BI is controlled by the first Fresnel lens 20I. The second light-emitting unit assembly 10II includes a third light-emitting unit 10AII and a fourth light-emitting unit 10BII that is spaced apart along the outer periphery of the third light-emitting unit 10AII. The second Fresnel lens 20II is disposed on the second light-emitting unit assembly 10II so as to straddle the third light-emitting unit 10AII and the fourth light-emitting unit 10BII. That is, in a plan view, the third light-emitting unit 10AII and the fourth light-emitting unit 10BII (corresponding to the second light-emitting unit assembly 10II) are disposed within the area of ​​the second Fresnel lens 20II, and the concentricity of the second Fresnel lens 20II (in other words, the optical axis D) and the center of the third light-emitting unit 10AII are approximately aligned.

[0085] The second light emitted from the third light-emitting unit 10AII and the fourth light-emitting unit 10BII is light distribution controlled by the second Fresnel lens 20II. The third light-emitting unit 10AII and the fourth light-emitting unit 10BII each emit second light of substantially the same color. The color of the second light is different from the color of the first light. In this embodiment, substantially the same color means that the color difference (corresponding to the difference in chromaticity) Δu'v' of the light emitted from each of the light-emitting units (here, the third light-emitting unit and the fourth light-emitting unit) is 0.05 or less.

[0086] The second light-emitting unit assembly 10II may emit a second light having a color different from the color of the first light emitted by the first light-emitting unit assembly 10I. In this embodiment, the second light having a color different from the color of the first light refers to a different emission color in which the color difference (corresponding to the difference in chromaticity) Δu'v' between the first light and the second light is greater than 0.05.

[0087] Hereinafter, in the light source device 100α of the second embodiment, a case will be described in which the first light-emitting unit 10I includes a wavelength conversion member 11AI and a wavelength conversion member 11BI as its components, and the second light-emitting unit 10II includes a wavelength conversion member 11AII and a wavelength conversion member 11BII as its components. In this case, the wavelength conversion member 11AII and the wavelength conversion member 11BII of the second light-emitting unit 10II may include one of the above-mentioned wavelength conversion members alone, or may include multiple types of wavelength conversion members. The wavelength conversion members 11AI and 11BI of the first light-emitting unit 10I may select wavelength conversion members different from the wavelength conversion members 11AII and the wavelength conversion member 11BII, or may have different contents of wavelength conversion members.

[0088] Like the light source device 100 of the first embodiment, the light source device 100α of the second embodiment can control the light distribution of the first light emitted from the first light-emitting unit 10AI and the second light-emitting unit 10BI constituting the first light-emitting unit assembly 10I by the first Fresnel lens 20I. This allows the first light to be distributed in two or more patterns by the first Fresnel lens 20I.

[0089] In the second embodiment, the second Fresnel lens 20II can control the light distribution of the second light emitted from the third light-emitting unit 10AII and the fourth light-emitting unit 10BII constituting the second light-emitting unit assembly 10II. As a result, the second Fresnel lens 20II can distribute the second light in two or more patterns, similar to the first light.

[0090] From the above, the light source device 100α of the second embodiment is capable of four or more light distribution patterns by the "first Fresnel lens 20I and the second Fresnel lens 20II" and the "first light emitting unit assembly 10I located in the area of ​​the first Fresnel lens 20I and the second light emitting unit assembly 10II located in the area of ​​the second Fresnel lens 20II in a plan view". That is, the lens 200 having two Fresnel lenses can control the first light and the second light to a total of four or more light distribution patterns. Therefore, the light source device 100α can be made compact and can be suitably used for a smartphone. Furthermore, if the two Fresnel lenses 20I and 20II have the same shape, the appearance of the lens 200 is improved (see FIG. 5A).

[0091] As in embodiment 1, in both the first light-emitting unit assembly 10I and the second light-emitting unit assembly 10II, when the first light-emitting unit 10AI and the third light-emitting unit 10AII having a first light-emitting element that can be independently controlled for lighting are controlled, the following effects are achieved.

[0092] Specifically, as in the first embodiment, the difference in angle between the light emitted from the light emitting surface of the first light emitting unit 10AI and the light emitting surface of the third light emitting unit 10AII and the light directed toward any sixth convex portion 26 of the first Fresnel lens 20I and the second Fresnel lens 20II is small, so that the angle between the optical axis of the light reflected by the reflecting surface of the sixth convex portion 26 or the fifth convex portion 25 located far from the first light emitting unit 10AI and the third light emitting unit 10AII and the optical axis C of the first Fresnel lens 20I or the optical axis D of the second Fresnel lens 20II (hereinafter referred to as the optical axis C or D of the lens 200) can be controlled to approach a desired angle. Note that this desired angle (the angle at which the angle between the optical axis of the light reflected by the reflecting surface of each convex portion and the optical axis C or D of the lens 200 becomes larger or smaller) can be adjusted by, for example, changing the shape, size, and / or position of each convex portion of the Fresnel lens.

[0093] As a result, the light emitted from the first light-emitting unit 10AI and the third light-emitting unit 10AII can be controlled to a desired light distribution through each convex portion of the first Fresnel lens 20I and the second Fresnel lens 20II that is located far from each light-emitting unit, such as the fifth convex portion 25 and the sixth convex portion 26. Therefore, the irradiated range (which can also be referred to as illuminance distribution) can be made wider or narrower by one lens 200 having the Fresnel lenses 20I and 20II, and the first light-emitting unit 10AI and the third light-emitting unit 10AII can be used for ultra-wide-angle light distribution control or ultra-narrow-angle light distribution control.

[0094] As in the first embodiment, when the second light-emitting unit 10BI and the fourth light-emitting unit 10BII are controlled to be turned on in both the first light-emitting unit assembly 10I and the second light-emitting unit assembly 10II, the following effects are achieved.

[0095] Specifically, in each light-emitting unit assembly 10I, 10II, the angle between the light ray heading toward any point of the sixth convex portion 26 and the light-emitting surface of the second light-emitting unit differs (meaning the above-mentioned angles θ3 and θ4) due to the positional relationship between the second light-emitting unit 10BI and the sixth convex portion 26 of the lens 20I and the positional relationship between the fourth light-emitting unit 10BII and the sixth convex portion 26 of the lens 20II, as in the first embodiment. As a result, the angle between the light reflected from the reflecting surface of the sixth convex portion 26 and the optical axis C, D of the lens 200 becomes larger or smaller than the desired angle. From a similar perspective, even when the light emitted from the second light-emitting unit 10BI and the fourth light-emitting unit 10BII heads, for example, from the second convex portion 22 to the fifth convex portion 25, the angle between the light reflected from the reflecting surface of each convex portion and the optical axis C, D of the lens 20 becomes larger or smaller than the desired angle. As a result, the proportion of light emitted from second light-emitting unit 10BI and fourth light-emitting unit 10BII that can be controlled via each of the convex portions of first Fresnel lens 20I and second Fresnel lens 20II, for example, second convex portion 22 to sixth convex portion 26, is smaller than the proportion of light emitted from first light-emitting unit 10AI and third light-emitting unit 10AII that can be controlled. Therefore, second light-emitting unit 10BI and fourth light-emitting unit 10BII can be used for wide-angle light distribution control or narrow-angle light distribution control.

[0096] From the above, according to the light source device 100α of the second embodiment, the single first Fresnel lens 20I can perform wide-angle light distribution control and ultra-wide-angle light distribution control, or narrow-angle light distribution control and ultra-narrow-angle light distribution control of the first light, depending on the difference in the positional relationship between the two light-emitting units (for example, the first light-emitting unit 10AI and the second light-emitting unit 10BI) and the first Fresnel lens 20I, etc. Furthermore, the single second Fresnel lens 20II can perform wide-angle light distribution control and ultra-wide-angle light distribution control, or narrow-angle light distribution control and ultra-narrow-angle light distribution control of the second light, depending on the difference in the positional relationship between the two light-emitting units (for example, the third light-emitting unit 10AII and the fourth light-emitting unit 10BII) and the second Fresnel lens 20II, etc.

[0097] That is, in embodiment 2, a single compound eye lens having two Fresnel lenses can control a total of four or more light distribution patterns from the first light emitted from the two light-emitting units that constitute the first light-emitting unit assembly 10I and the second light emitted from the two light-emitting units that constitute the second light-emitting unit assembly 10II.

[0098] <Manufacturing method of light source device> A method for manufacturing a light source device according to an embodiment of the present invention will now be described.

[0099] A manufacturing method for a light source device according to an embodiment of the present invention includes a first step of providing a light emitting unit assembly on a substrate having wiring (hereinafter referred to as a wiring substrate), and a second step of providing a lens on the light emitting unit assembly so as to straddle the first light emitting unit and the second light emitting unit of the light emitting unit assembly.

[0100] Specifically, in the first step, the light-emitting assembly is provided on the wiring board so that the wiring of the wiring board faces a pair of electrodes provided on each light-emitting element of each light-emitting part of the light-emitting assembly, and each light-emitting element can be independently controlled to light up. In the second step, a lens is provided on the light-emitting assembly so that each light-emitting part faces the multiple convex parts of the Fresnel lens at a distance. In this manner, the light source device according to the embodiment of the present invention can be manufactured.

[0101] The process for producing the light emitting part assembly, which is a component of the light source device, will be described below. The process for producing the light emitting part assembly includes the following three examples (see Figs. 6A to 6O, 7A to M, and 8A to 8R). Note that the drawings show a form in which a plurality of parts that become the second light emitting element are arranged at a distance from each other so as to surround a part that becomes the first light emitting part. However, the present invention is not limited to this, and a part that becomes the second light emitting part having one second light emitting element may be arranged so as to surround a part that becomes the first light emitting part.

[0102] Example 1 of the light emitting assembly: First, a wavelength conversion member sheet 111α is prepared (see FIGS. 6A and 6B). The wavelength conversion member sheet 111α is diced into a plurality of quadrangular (rectangular or square) wavelength conversion member sheets 11α (see FIGS. 6C and 6D). Next, the first light-emitting element 12Aα and the second light-emitting element 12Bα are arranged on the plurality of quadrangular wavelength conversion member sheets 11α so that the light-emitting surface of the first light-emitting element 12Aα and the light-emitting surface of the second light-emitting element 12Bα face each other (see FIGS. 6E and 6F). After the first light-emitting element 12Aα and the second light-emitting element 12Bα are arranged, the side surfaces and electrodes of all the light-emitting elements are covered with a reflective member material 13α (see FIGS. 6G and 6H). After the reflective member material 13α is hardened, the reflective member material 13α is ground so that a pair of electrodes 41α and 42α arranged on each light-emitting element are exposed. Finally, the reflective member material 13α is diced into individual pieces having a desired shape (see FIGS. 6K and 6L). In this manner, the light emitting unit assembly 10 including the first light emitting unit 10A and the second light emitting unit 10B can be produced (see FIGS. 6M to 6O).

[0103] Example 2 of the light-emitting assembly: First, an assembly plate 60α of the first light-emitting element 12Aα and the second light-emitting element 12Bα, the sides of which are covered with the reflecting member material 13α, is prepared (see FIGS. 7A and 7B). Next, the phosphor-containing block 11Aα, which is a wavelength conversion member, is arranged so as to face the light-emitting surface of the first light-emitting element 12Aα, and the phosphor-containing block 11Bα, which is a wavelength conversion member, is arranged so as to face the light-emitting surface of the second light-emitting element 12Bα (see FIGS. 7C and 7D). After the phosphor-containing block is arranged, the side and top surface of the phosphor-containing block are covered with the reflecting member material 13β (see FIGS. 7E and 7F). After the reflecting member material 13β is hardened, the reflecting member material 13β is ground so that the top surfaces of the phosphor-containing blocks 11Aα and 11Bα are exposed (see FIGS. 7G and 7H). Finally, the reflecting member materials 13α and 13β are diced into individual pieces to obtain a desired shape (see FIGS. 7I and 7J). In this manner, a light emitting unit assembly 10 including a first light emitting unit 10A and a second light emitting unit 10B can be produced (see FIGS. 7K to 7M).

[0104] Example 3 of the light-emitting assembly: First, the reflecting member plate 13γ is prepared (see FIG. 8A and FIG. 8B). After preparing the reflecting member plate 13γ, a part of the reflecting member plate 13γ is punched out so as to form a through hole S1 (see FIG. 8C and FIG. 8D). After punching, the formed through hole S1 is filled with the phosphor-containing resin material 11Bβ by, for example, a potting method (see FIG. 8E and FIG. 8F). After hardening the phosphor-containing resin material 11Bβ, a part of the phosphor-containing resin material 11Bβ is punched out so as to form a through hole S2 (see FIG. 8G and FIG. 8H). After punching, the formed through hole S2 is filled with the reflecting member material 13β (see FIG. 8I and FIG. 8J). After hardening the reflecting member material 13β, a part of the reflecting member material 13β is punched out so as to form a through hole S3 (see FIG. 8K and FIG. 8L). After punching, the formed through hole S3 is filled with phosphor-containing resin material 11Aβ and cured (see FIG. 8M and FIG. 8N). Then, an assembly plate 60α of the first light-emitting element 12Aα and the second light-emitting element 12Bα, whose sides are covered with the reflective member material 13α, is arranged so as to directly face the part where the phosphor-containing resin material 11Aβ is cured and the part where the phosphor-containing resin material 11Bβ is cured, respectively (see FIG. 8O and FIG. 8P). Finally, the reflective member material 13α and the reflective member plate 13γ are cut by dicing to a desired shape (see FIG. 8Q and FIG. 8R). In this manner, a light-emitting unit assembly including the first light-emitting unit 10A and the second light-emitting unit 10B can be produced.

[0105] Although one embodiment of the present invention has been described above, it is merely a typical example within the scope of application of the present invention. Therefore, the present invention is not limited to this, and various modifications are possible without departing from the scope and idea of ​​the present disclosure. [Industrial Applicability]

[0106] The light source device of the embodiment can be suitably used for illumination, camera flash, vehicle headlight, etc. However, the light source device of the embodiment is not limited to these applications. [Explanation of symbols]

[0107] 200 Lenses 111α Wavelength conversion material sheet 100, 100α light source device 60α A plate assembly of light-emitting elements whose sides are covered with a reflective material (in the process of preparing the light-emitting part assembly) 50 areas 40 Pair of electrodes 41 Positive electrode 42 Negative electrode 30 Substrate 20 Fresnel Lens 20a Fresnel lens entrance surface 20b Exit surface of Fresnel lens 20I 1st Fresnel lens 20II 2nd Fresnel lens 21 First protrusion 21a: Convex curved surface of first convex portion 21b Micro-projection member of first projection 22 Second protrusion 22a: entrance surface of second convex portion 22b Reflecting surface of third convex portion 23 Third protrusion 23a: entrance surface of third convex portion 23b Reflecting surface of third convex portion 24 4th convex part 24a: entrance surface of fourth convex portion 24b Reflecting surface of the fourth convex part 25 5th convex part 25a: entrance surface of fifth convex portion 25b Reflecting surface of fifth convex portion 26 6th convex part 26a: entrance surface of sixth convex portion 26b Reflecting surface of the sixth convex part 10 Light emitting part assembly 10I First light emitting unit assembly 10II Second light-emitting assembly 10A, 10AI, 10AX, 10AY First light emitting part 10B, 10BI, 10BX, 10BY Second light emitting part 10AII Third light emitting part 10BII 4th ​​light emitting part 11A, 11AI, 11AX, 11AY Wavelength conversion member of the first light-emitting part 11B, 11BI, 11BX, 11BY Wavelength conversion member of second light emitting section 11AII Wavelength conversion material of the third light-emitting section 11BII Wavelength conversion member of fourth light-emitting unit 11Aα, 11Bα phosphor-containing blocks 11Aβ, 11Bβ Phosphor-containing resin material 12A, 12AI, 12AX, 12AY Light-emitting element of the first light-emitting unit (first light-emitting element) 12B, 12BI, 12BX, 12BY Light-emitting element of the second light-emitting section (second light-emitting element) 12AII Light-emitting element of the third light-emitting unit (third light-emitting element) 12BII Light-emitting element of the fourth light-emitting unit (fourth light-emitting element) 12Aα, 12Bα Light-emitting element (light-emitting part assembly in the process of being assembled) 13 Reflective material 13α, 13β Reflective material 13γ Reflector plate L1 Light from the first light-emitting part L2 Second light emitting part light B, C, D Lens optical axis S1, S2, S3 through holes

Claims

1. A light emitting unit assembly including a first light emitting unit having a first light emitting element, and a second light emitting unit having a plurality of second light emitting elements and spaced apart from each other along an outer periphery of the first light emitting unit in a plan view; A lens disposed on the light emitting unit assembly, The first light emitting element and the plurality of second light emitting elements are arranged vertically and horizontally, The first light emitting element and the plurality of second light emitting elements are capable of being independently lit and controlled, A light source device, wherein a full angle at half maximum of a light distribution of light emitted from the first light-emitting unit and exiting from the lens is different from a full angle at half maximum of a light distribution of light emitted from the second light-emitting unit and exiting from the lens.

2. The second light emitting element has a wavelength conversion member on a light emitting surface side, The light source device according to claim 1 , wherein the wavelength conversion member is disposed so as to surround an outer periphery of the first light-emitting portion.

3. The second light emitting element has a wavelength conversion member on a light emitting surface side, The light source device according to claim 1 , wherein one of the wavelength conversion members is disposed so as to surround an outer periphery of the first light-emitting portion.

4. 4. The light source device according to claim 1, wherein the light emitting portion assembly is disposed within the area of ​​the lens in a plan view.

5. The light source device according to any one of claims 1 to 4, wherein the lens changes a light distribution angle of the light emitted from the first light-emitting portion to a greater extent than a light distribution angle of the light emitted from the second light-emitting portion.

6. 6. The light source device according to claim 1, wherein the light from each of the first light-emitting portion and the second light-emitting portion has a color difference Δu'v' of 0.05 or less in a CIE 1976 (L*, u*, v*) color space.

7. 7. The light source device according to claim 1, wherein the lens is a Fresnel lens.

8. 8. The light source device according to claim 1, wherein the light emitting portion assembly has a reflective member on a side surface of each of the first light emitting element and the plurality of second light emitting elements.

9. The light source device according to any one of claims 1 to 8, wherein the light source device is a flash light source.

10. A light emitting unit assembly including a first light emitting unit having a first light emitting element and a second light emitting unit having a second light emitting element; A lens disposed on the light emitting unit assembly; Equipped with In a plan view, the second light-emitting portion is disposed along an outer periphery of the first light-emitting portion at a distance, and the light source device is composed of one second light-emitting element.

11. The light source device according to claim 10 , wherein the light emitting portion assembly includes a reflecting member on each side surface of the first light emitting element and the second light emitting element.

12. The first light emitting element and the second light emitting element are capable of being independently lit and controlled, 12. The light source device according to claim 10, wherein a full angle at half maximum of a light distribution of light emitted from the first light-emitting unit and exiting from the lens is different from a full angle at half maximum of a light distribution of light emitted from the second light-emitting unit and exiting from the lens.

13. 13. The light source device according to claim 1, wherein one of the lenses is disposed on one of the light emitting portion assemblies.

14. 14. The light source device according to claim 13, wherein one of the lenses has an incident surface onto which the light emitted from the light emitting portion assembly is incident and an exit surface from which the light exits, the exit surface being flat.

Images