Light source device and lens structure

Abstract

To provide a light source device with high adhesion between a supporter and a lens, and a lens structure.SOLUTION: A light source device 200 includes a light source 30 including a light-emitting surface 30a on an upper surface and a plurality of light-emitting units 30U arranged two-dimensionally, a lens 10 including an optical function unit 11 disposed over the light-emitting surface of the light source with a gap from the light source and a flange part 12 disposed along an outer periphery 11P of the optical function unit 11, and a supporter 20 formed of a light blocking member and supporting at least the flange part of the lens 10. The optical function unit 11 includes a first surface 11a existing on the opposite side of the light source, and a second surface 11b existing on the opposite side of the first surface and facing the light source. The first surface has a larger surface area than the second surface. In a plan view, the first surface and the second surface cover the light-emitting units. The flange part 12 includes a third surface 12a existing on the same side as the first surface and a fourth surface 12b existing on the same side as the second surface. The flange part 12 includes at least one first concave part 13 on the fourth surface 12b.SELECTED DRAWING: Figure 1B

Description

Technical Field

[0001] The present application relates to a light source device and a lens structure.

Background Art

[0002] Conventionally, a composite molded lens in which a press-molded lens body and a frame surrounding the lens body are integrated by injection molding has been disclosed. The upper mold and the lower mold of the composite molded lens mold used in the production of this composite molded lens are composed of a lens part core, a flange part core, and a frame part core, each of which is independently movable, but the number of manufacturing steps of the composite molded lens is large (for example, see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present disclosure is to provide a light source device and a lens structure having good adhesion between a support and a lens.

Means for Solving the Problems

[0005] A light source device according to an embodiment of the present disclosure is a light source having a light emitting surface on an upper surface, the light source including a plurality of light emitting portions arranged two-dimensionally, a lens disposed above the light emitting surface of the light source at an interval from the light source, the lens having an optical functional portion and a flange portion disposed along an outer periphery of the optical functional portion, a support body made of a light shielding member and supporting at least the flange portion of the lens, the optical functional portion including a first surface located on a side opposite to the light source and a second surface located on a side opposite to the first surface and facing the light source, a surface area of the first surface being larger than a surface area of the second surface, in a plan view, the first surface and the second surface covering the plurality of light emitting portions, the flange portion having a third surface located on the same side as the first surface and a fourth surface located on the same side as the second surface, the flange portion having at least one first recess on the fourth surface.

[0006] A lens structure according to an embodiment of the present disclosure is a lens structure including a lens having an optical functional portion and a flange portion disposed along an outer periphery of the optical functional portion, a support body made of a light shielding member and supporting at least the flange portion of the lens, the lens and the support body being a single two-color molded body, the optical functional portion having a first surface and a second surface located on a side opposite to the first surface, a surface area of the first surface being larger than a surface area of the second surface, the flange portion having a third surface located on the same side as the first surface and a fourth surface located on the same side as the second surface, the flange portion having at least one first recess on the fourth surface.

Advantages of the Invention

[0007] According to an embodiment of the present disclosure, it is possible to provide a light source device and a lens structure in which the adhesion between the support body and the lens is good.

Brief Description of the Drawings

[0008]

Fig. 1A

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DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the invention will be described with reference to the drawings as appropriate. However, the light source device described below is for embodying the technical idea of the present invention, and the present invention is not limited to the following unless otherwise specified. Also, the content described in one embodiment is applicable to other embodiments and modifications. Furthermore, the sizes and positional relationships of the members shown in the drawings may be exaggerated for clarity of explanation.

[0010] In the following description, components having substantially the same function may be denoted by a common reference numeral, and the description thereof may be omitted. Alternatively, reference numerals may not be assigned to components not referred to in the description. In the following description, terms indicating a specific direction or position (for example, "upper", "lower", "right", "left", and other terms including these terms) may be used. However, these terms are merely used for ease of understanding of the relative direction or position in the referenced drawings. As long as the relative direction or positional relationship based on terms such as "upper" and "lower" in the referenced drawings is the same, in drawings other than the present disclosure, actual products, manufacturing apparatuses, etc., they may not be arranged in the same manner as in the referenced drawings. In the present disclosure, "parallel" includes cases where two straight lines, sides, planes, etc. are in the range of about 0° to ±5° unless otherwise specified. Also, in the present disclosure, "perpendicular" or "orthogonal" includes cases where two straight lines, sides, planes, etc. are in the range of about 90° to ±5° unless otherwise specified.

[0011] In the figures shown below, arrows indicating the x-axis, y-axis, and z-axis that are perpendicular to each other are shown together. The x-direction along the x-axis indicates a predetermined direction within the arrangement plane in which the light source included in the light source device according to the embodiment is arranged (in other words, within the arrangement plane in which the light emitting portions are arranged), the y-direction along the y-axis indicates a direction perpendicular to the x-direction within the arrangement plane of the light source, and the z-direction along the z-axis indicates a direction perpendicular to the arrangement plane. Also, the direction in which the arrow points in the x-direction is denoted as the +x direction, the opposite direction of the +x direction is denoted as the -x direction, the direction in which the arrow points in the y-direction is denoted as the +y direction, the opposite direction of the +y direction is denoted as the -y direction, the direction in which the arrow points in the z-direction is denoted as the +z direction, and the opposite direction of the +z direction is denoted as the -z direction. In the embodiment, as an example, the light source irradiates light toward the +z direction side. However, this does not limit the orientation during the use of the light source device and the lens structure, and the orientation of the light source device and the lens structure is arbitrary.

[0012] In the following, the embodiment will be described by taking, as an example, the flashlight of a smartphone having the light source device and the lens structure according to the embodiment.

[0013] (Embodiment) FIG. 1A and FIG. 1B are diagrams showing a light source device 200 according to a first embodiment of the present disclosure. FIG. 1A is a schematic top view of the light source device 200. FIG. 1B is a schematic cross-sectional view of the light source device 200 taken along line 1B-1B shown in FIG. 1A.

[0014] The light source device 200 includes a light source 30, a lens 10, and a support 20.

[0015] The light source 30 includes a plurality of light emitting portions 30U arranged two-dimensionally. The lens 10 is disposed at a distance from the light source 30 above the light emitting surface 30a of the light source 30 (+z direction). The lens 10 has an optical function portion 11 and a flange portion 12 disposed along the outer periphery 11P of the optical function portion 11. The support 20 is made of a light shielding member and supports at least the flange portion 12 of the lens 10. A structure including the lens 10 and the support 20 is referred to as a "lens structure".

[0016] The optical function portion 11 includes a first surface 11a located on the side opposite to the light source 30 and a second surface 11b located on the side opposite to the first surface 11a and facing the light source 30. In plan view, the first surface 11a and the second surface 11b cover the plurality of light emitting portions 30U. Also, the surface area of the first surface 11a is larger than the surface area of the second surface 11b.

[0017] The flange portion 12 has a third surface 12a located on the same side as the first surface 11a and a fourth surface 12b located on the same side as the second surface 11b. The flange portion 12 has at least one first recess 13 on the fourth surface 12b.

[0018] In this embodiment, the lens 10 is formed using a light-transmissive material. Further, the support 20 is made of a light-shielding resin member or the like. For example, as a method of integrally molding different materials such as the lens 10 and the support 20, a two-color molding method described later can be used. When the two-color molding method is used, even when the support 20 is molded after the lens 10 is molded, the lens 10 and the support 20 can be integrally molded without using an adhesive or the like. Note that the lens 10 and the support 20 may have the same or different base materials, or may have different contained substances in the base material. According to this embodiment, by providing the first recess 13 in the fourth surface 12b of the flange portion 12 of the lens 10, when the lens 10 is molded as a primary molded body in the two-color molding process described later, the adhesion between the lens 10 and the mold (lower mold) on the lower surface side of the lens 10 can be enhanced. As a result, when the mold is opened after the lens 10 is molded, the lens 10 can be released from the mold (upper mold) on the upper surface side of the lens 10 while the lens 10 remains in the lower mold. Therefore, after the lens 10 is molded, it is possible to continuously mold the support 20 as a secondary molded body.

[0019] Further, in this embodiment, the first recess 13 is provided in the flange portion 12 located outside the optical functional portion 11. Thereby, the influence of the first recess 13 on the optical action of the optical functional portion 11 can be reduced.

[0020] Hereinafter, each component will be described in detail.

[0021] 1. Lens structure FIG. 2A is a schematic top view of the lens structure 100. FIG. 2B is a schematic bottom view of the lens structure 100. FIG. 2C is a schematic cross-sectional view taken along line 2C-2C shown in FIGS. 2A and 2B.

[0022] The lens structure 100 includes a lens 10 and a support 20 made of a light-shielding member. The lens 10 and the support 20 are preferably integrated. The lens 10 and the support 20 may be a single two-color molded body. In the present embodiment, a single two-color molded body refers to a molded body made of materials of different colors, which is integrally molded without using an adhesive or the like.

[0023] As shown in FIGS. 1A and 1B, in the present embodiment, the support 20 is in the +z direction with respect to the light-emitting surface 30a of the light source 30, and holds the lens 10 at a position where the light from the light-emitting surface 30a enters the optical functional portion 11. The light source device 200 may further include a substrate 40 on which the light source 30 is disposed, and an end portion of the support 20 on the light source 30 side may be fixed to the first surface 40a of the substrate 40. Thereby, the lens 10 can be stably held at a predetermined position with respect to the light-emitting surface 30a.

[0024] The support 20 may have an opening 25 that exposes at least a part of the optical functional portion 11 of the lens 10 on the opposite side of the light source 30. The light incident on the lens 10 from the light source 30 is emitted from the upper surface of the lens 10 through the opening 25.

[0025] [Lens 10] FIG. 3A is a schematic top view of the lens 10, and FIG. 3B is a schematic cross-sectional view taken along line 3B-3B shown in FIG. 3A.

[0026] In the present embodiment, the outer shape of the lens 10 in plan view is substantially circular, and its diameter L1 is preferably 3.0 mm or more and 10.0 mm or less, for example, about 6.05 mm. The thickness L2 of the lens 10 is preferably 1.0 mm or more and 5.0 mm or less, for example, about 3.2 mm. Note that the outer shape of the lens 10 in plan view is not limited thereto. For example, when the lens 10 includes a plurality of lens portions arranged two-dimensionally, the outer shape of the lens 10 in plan view may be substantially rectangular.

[0027] The lens 10 includes an optical functional portion 11 and a flange portion 12 disposed outside the optical functional portion 11 along the outer periphery 11P of the optical functional portion 11. The optical functional portion 11 has a first surface 11a and a second surface 11b located on the side opposite to the first surface 11a. The first surface 11a is located on the side opposite to the light source, and the second surface 11b is located on the light source side. The flange portion 12 has a third surface 12a located on the same side as the first surface 11a and a fourth surface 12b located on the same side as the second surface 11b. The flange portion 12 has at least one first recess on the fourth surface 12b. The flange portion 12 may further include an outer surface 12c adjacent to the third surface 12a and the fourth surface 12b.

[0028] The lens 10 has an upper surface 10a and a lower surface 10b. The upper surface 10a of the lens 10 includes the first surface 11a of the optical functional portion 11 and the third surface 12a of the flange portion 12. The lower surface 10b of the lens 10 includes the second surface 11b of the optical functional portion 11 and the fourth surface 12b of the flange portion 12.

[0029] The "outer periphery 11P of the optical functional portion 11" is defined, for example, by the outer edge of the first surface 11a of the optical functional portion 11 on the upper surface 10a of the lens 10. In the examples shown in FIGS. 3A and 3B, among the upper surface 10a of the lens 10, the convex portion is the first surface 11a of the optical functional portion 11, and the substantially flat portion located outside the first surface 11a is the third surface 12a of the flange portion 12. Also, among the lower surface 10b of the lens 10, in plan view, the portion overlapping the first surface 11a is the second surface 11b of the optical functional portion 11, and the portion located outside the second surface 11b is the fourth surface 12b of the flange portion 12. The fourth surface 12b includes a substantially flat surface. The fourth surface 12b may include a curved surface continuous with the second surface 11b of the optical functional portion 11.

[0030] <Optical functional portion 11> The optical functional portion 11 refracts the light transmitted through the optical functional portion 11 from each light emitting portion 30U of the light source 30 and emits it in a predetermined direction. The optical functional portion 11 can function as a convex lens such as a biconvex lens, a plano-convex lens, a convex meniscus lens, a concave lens such as a biconcave lens, a plano-concave lens, a concave meniscus lens, and a Fresnel lens.

[0031] In this embodiment, the optical function unit 11 functions as a convex lens having one optical axis with respect to the light emitting surface 30a of the light source 30. Thereby, the light emitted from the light emitting surface 30a can be projected onto an irradiation region that is point-symmetrical with respect to one point on the optical axis. For example, as will be described later, when a plurality of light emitting portions 30U in the light source 30 are lit independently of each other (hereinafter referred to as "partial driving"), illumination light having a luminance distribution corresponding to the light emission distribution of the light source 30 can be projected onto the irradiation region.

[0032] Note that the optical function unit 11 may have a plurality of optical axes with respect to the light emitting surface 30a of the light source 30. For example, the optical function unit 11 may include a plurality of lens portions having different optical axes. Each of the plurality of lens portions may be arranged to correspond to one or a plurality of the light emitting portions 30U of the light source 30.

[0033] The first surface 11a of the optical function unit 11 has a larger surface area than the second surface 11b of the optical function unit 11. The surface area of the first surface 11a is preferably, for example, 2 times or more and 4 times or less the surface area of the second surface 11b. In this embodiment, the surface area of the first surface 11a is 15.0 mm 2 or more and 40.0 mm 2 or less, and is preferably about 27.9 mm, for example. The surface area of the second surface 11b is preferably 10.0 mm 2 or more and 35.0 mm 2 or less, and is preferably about 22.1 mm, for example. 2 or less, and is preferably about 22.1 mm, for example. 2 or the like.

[0034] The shapes of the first surface 11a and the second surface 11b are not particularly limited. For example, the first surface 11a and the second surface 11b may each be a convex surface curved convexly, or may be a concave surface curved concavely. In this case, the radius of curvature of the first surface 11a that is a convex surface or a concave surface may be smaller than the radius of curvature of the second surface 11b that is a convex surface or a concave surface. Alternatively, the first surface 11a may be a convex surface or include a convex surface, and the second surface 11b may be a flat surface. For example, unevenness functioning as a Fresnel lens may be formed on the first surface 11a, and the second surface 11b may be a flat surface.

[0035] In the illustrated example, the outer shape of the optical functional portion 11 in plan view is substantially circular. Both the first surface 11a and the second surface 11b of the optical functional portion 11 of the lens 10 are convex surfaces that are convexly curved, and the optical functional portion 11 functions as a convex lens having one optical axis. The optical axis of the convex lens may be parallel to the z-axis. The focal length of the optical functional portion 11 is preferably, for example, 3 mm or more and 5 mm or less.

[0036] In the illustrated example, the radius of curvature of the first surface 11a is smaller than the radius of curvature of the second surface 11b. The radius of curvature of the first surface 11a is preferably 1.5 mm or more and 3.0 mm or less, and is, for example, 2.4 mm. The radius of curvature of the second surface 11b is preferably 5.0 mm or more and 30.0 mm or less, and is, for example, 10.0 mm.

[0037] The lens diameter LD1 of the first surface 11a (the diameter of the first surface 11a in plan view) is preferably, for example, 3.0 mm or more and 5.0 mm or less, and is, for example, about 4.21 mm. Also, the maximum height HL of the first surface 11a is preferably, for example, 1.0 mm or more and 4.0 mm or less, and is, for example, about 2.34 mm. The maximum height HL of the first surface 11a refers to the length along the z-axis from the third surface 12a to the apex of the first surface 11a.

[0038] As shown in the figure, a convex surface having a lens diameter LD2 larger than the lens diameter LD1 of the first surface 11a may be formed on the lower surface 10b of the lens 10. In this case, a part of the convex surface formed on the lower surface 10b becomes the second surface 11b of the optical functional portion 11. The lens diameter LD2 is preferably, for example, 4.0 mm or more and 6.0 mm or less, and is, for example, about 5.3 mm.

[0039] <Flange portion 12> The flange portion 12 can be arranged along the entire outer periphery 11P of the optical functional portion 11. In the illustrated example, in a plan view, the outer surface 12c of the flange portion 12 may extend outside the outer periphery 11P and substantially parallel to the outer periphery 11P. The width w1 of the flange portion 12 is preferably 0.7 mm or more and 1.1 mm or less, for example, 0.92 mm. The thickness d1 of the flange portion 12 is preferably 0.3 mm or more and 0.7 mm or less, for example, 0.5 mm. The thickness d1 of the flange portion 12 refers to the shortest distance in the z-axis direction between the third surface 12a and the portion on the side of the outer surface 12c of the flange portion 12 where the first recess 13 is not formed among the fourth surface 12b.

[0040] The flange portion 12 has at least one first recess 13 on the fourth surface 12b. Thereby, in the two-color molding process described later, the contact area between the lower surface 10b of the lens 10 and the lower mold increases, and the adhesion between the lens 10 and the lower mold can be enhanced. For this reason, when the mold is opened after the lens 10 is molded, it becomes possible to more reliably release the lens 10 from the upper mold while holding the lens 10 on the lower mold. Therefore, after the lens 10 is molded, the support 20, which is a secondary molded body, can be continuously molded.

[0041] Further, since the first recess 13 is arranged in the flange portion 12 outside the optical functional portion 11, the influence of the first recess 13 on the optical action of the optical functional portion 11 can be suppressed. The first recess 13 is preferably arranged at an interval from the outer periphery 11P of the optical functional portion 11. Thereby, the influence of the first recess 13 on the optical action of the optical functional portion 11 can be more reliably suppressed.

[0042] The planar shape of the first recess 13 is not particularly limited. The first recess 13 may be a groove extending along the outer periphery 11P of the optical functional portion 11. Alternatively, it may have a planar shape such as a circle, an ellipse, or a rectangle. The inner surface of the first recess 13 may be substantially perpendicular to the third surface 12a of the flange portion 12, or may be inclined with respect to the vertical surface of the third surface 12a. Further, the corner portion of the first recess 13 may have a rounded shape (R shape).

[0043] The flange portion 12 may have a plurality of first recesses 13. The arrangement method, arrangement pitch, etc. of the plurality of first recesses 13 are not limited. For example, the plurality of first recesses 13 may be arranged at intervals along the outer periphery 11P of the optical functional portion 11. When the width w1 of the flange portion 12 is sufficiently large, two or more first recesses 13 may be arranged in the width direction of the flange portion 12. From the viewpoint of suppressing the following traling phenomenon (the phenomenon that the lens 10 remains on the upper mold side when the mold is opened after the formation of the lens 10), it is preferable that the plurality of first recesses 13 are arranged at substantially equal intervals over the entire circumference of the flange portion 12.

[0044] In the examples shown in FIGS. 3A and 3B, the first recess 13 is a groove surrounding the optical functional portion 11 in a plan view. The inner surface of the first recess 13 includes, for example, a first side surface 13s1 along the outer periphery 11P of the optical functional portion 11 and a second side surface 13s2 facing the first side surface 13s1 and located closer to the optical functional portion 11 side than the first side surface 13s1. By providing a groove surrounding the optical functional portion 11 as the first recess 13, the adhesion to the lower mold can be enhanced over the entire flange portion 12 of the lens 10 in the first mold opening step.

[0045] The width w2 of the first recess 13 is preferably 1 / 2 or less of the width w1 of the flange portion 12, more preferably 1 / 3 or less. The width w2 of the first recess 13 is preferably, for example, 0.25 mm or more and 0.60 mm or less, and is, for example, about 0.30 mm. The depth from the fourth surface 12b of the first recess 13 (in other words, the maximum length in the z-axis direction) d2 is preferably 1 / 2 or more of the thickness d1 of the flange portion 12. From the viewpoint of the strength of the lens 10, the depth d2 of the first recess 13 can be set to 4 / 5 or less of the thickness d1 of the flange portion 12. The depth d2 of the first recess 13 is preferably, for example, 0.25 mm or more and 0.40 mm or less.

[0046] FIGS. 4A and 4B are bottom views of the lens 10 for explaining other examples of the first recess 13, respectively. As shown in FIGS. 4A and 4B, a plurality of first recesses 13 may be arranged at intervals on the fourth surface 12b of the flange portion 12. These first recesses 13 may be arranged at substantially equal intervals, for example, along the outer periphery 11P.

[0047] In the example shown in FIG. 4A, each first recess 13 is a groove extending along a part of the outer periphery 11P of the optical functional portion 11 in a plan view. In a plan view, the inner surface of each first recess 13 includes, for example, a first side surface 13s1 and a second side surface 13s2 substantially parallel to the outer periphery 11P, and a third side surface 13s3 and a fourth side surface 13s4 extending in a direction intersecting the outer periphery 11P. By including a plurality of side surfaces extending in different directions in the inner surface of the first recess 13 in a plan view, the adhesion between the lower surface 10b of the lens 10 and the lower mold can be improved. As shown in FIG. 4B, each first recess 13 may have a circular planar shape.

[0048] The shape, arrangement, and number of the first recesses 13 are not limited to the structures illustrated in FIGS. 3A, 3B, 4A, and 4B. As will be described later, the first recess 13 may have at least one convex portion and / or at least one second recess on the inner surface. Thereby, in the two-color molding process described later, when the mold is opened after molding the lens 10, the adhesion between the lower surface 10b of the lens 10 and the lower mold can be further enhanced, so that the occurrence of the trailing phenomenon can be more effectively suppressed.

[0049] Also, a plurality of first recesses 13 having different shapes may be provided on the fourth surface 12b of the flange portion 12. For example, the plurality of first recesses 13 may include an annular first recess (groove) 13 as shown in FIGS. 3A and 3B and a circular (or rectangular) first recess 13 as shown in FIG. 4B in a plan view.

[0050] The lens 10 can be formed using a resin material having light transmissivity, for example, a thermoplastic resin. As the thermoplastic resin, polycarbonate, acrylic, cyclic polyolefin, polyethylene terephthalate, polyester, or the like can be used. A thermoplastic resin material is preferable because it can be efficiently manufactured by injection molding. Among them, it is preferable to use polycarbonate having high transparency and low cost. Alternatively, the lens 10 may be formed using a thermosetting resin such as a silicone resin or an epoxy resin.

[0051] [Support 20] As shown in FIGS. 2A to 2C, the support 20 at least supports the flange portion 12 of the lens 10. The support 20 may be in contact with at least a part of the third surface 12a and / or at least a part of the outer surface 12c of the flange portion 12.

[0052] In the present embodiment, the support 20 has a contact surface 20S that is in contact with at least a part of the third surface 12a of the flange portion 12. The support 20 may be in contact with the entire third surface 12a of the flange portion 12. Preferably, the support 20 covers the entire third surface 12a and the outer surface 12c of the flange portion 12. Thereby, the support 20 can stably support the lens 10 (specifically, the flange portion 12 of the lens 10).

[0053] In plan view, the support 20 may be arranged so as to at least partially overlap with the first recess 13 in the flange portion 12 of the lens 10. That is, the contact surface 20S of the support 20 that contacts the third surface 12a of the flange portion 12 and at least one first recess 13 of the flange portion 12 may overlap each other. Thereby, the first recess 13 is arranged at a position where it does not affect the optical action of the optical function portion 11. As shown in the drawing, in plan view, it is preferable that the contact surface 20S of the support 20 covers the entire first recess 13.

[0054] When the flange portion 12 has a plurality of first recesses 13, in plan view, the contact surface 20S of the support 20 only needs to cover at least some of the first recesses 13, but preferably covers all of the first recesses 13.

[0055] In the illustrated example, the support 20 includes a first hood portion 21, a second hood portion 22, a support first flange portion 23, and a support second flange portion 24.

[0056] The first hood portion 21 and the second hood portion 22 have a cylindrical outer shape such as a cylinder that tapers in the direction in which light is emitted. That is, the first hood portion 21 and the second hood portion 22 are inclined so as to approach the optical axis of the convex lens as they go in the +z direction. The first hood portion 21 extends from the third surface 12a of the flange portion 12 to the side opposite to the light source. The first hood portion 21 preferably has a shape that tapers in the +z direction. The second hood portion 22 extends from the outer surface 12c of the flange portion 12 to the light source side. The second hood portion 22 may be fixed to the substrate on which the light source is disposed.

[0057] In plan view, the first hood portion 21 preferably at least partially overlaps with the first concave portion 13 of the flange portion 12, and more preferably overlaps with the entire first concave portion 13. Further, the first concave portion 13 is preferably disposed inside the second hood portion 22 in plan view. Furthermore, the support body 20 including the first hood portion 21 and the second hood portion 22 preferably does not contact at least one first concave portion. Thereby, the support body 20 can stably support the lens 10 (specifically, the flange portion 12 of the lens 10). Also, it is possible to prevent light from the light source 30 from leaking to the outside of the support body 20 (specifically, the outside in the ±x direction or the ±y direction of the first hood portion 21 and the second hood portion 22).

[0058] In plan view, the outer surface of the first hood portion 21 may be located inside the outer surface of the second hood portion 22. In this case, the support body 20 may have a support body first flange portion 23 outside the first hood portion 21 and above (+z direction) the second hood portion 22. The support body first flange portion 23 surrounds the first hood portion 21 in plan view. The upper surface of the support body first flange portion 23 is substantially flat, and the side surface of the support body first flange portion 23 may be continuous with the outer surface of the second hood portion 22.

[0059] The second flange portion 24 of the support 20 covers the edge of the first surface 11a of the optical functional portion 11. In the present embodiment, an opening 25 of the support 20 is defined by the inner edge of the second flange portion 24 of the support. The second flange portion 24 of the support may be located between the first hood portion 21 and the optical functional portion 11. The second flange portion 24 of the support can act as a diaphragm of the optical functional portion 11.

[0060] In the present embodiment, the maximum width S1 of the support 20 is preferably, for example, 4.0 mm or more and 15.0 mm or less, and is, for example, about 6.9 mm, and the height S2 of the support 20 is preferably 1.5 mm or more and 7.0 mm or less, and is, for example, 4.03 mm. The maximum width S1 of the support 20 indicates the maximum width of the outer shape of the second hood portion 22. The height S2 of the support 20 indicates the length in the z-axis direction from the lower end of the second hood portion 22 to the upper end of the first hood portion 21.

[0061] The height H1 of the first hood portion 21 can be set, for example, to be approximately the same as the maximum height HL of the first surface 11a of the optical functional portion 11 or larger than the maximum height HL. The height H1 of the first hood portion 21 indicates the length along the z-axis from the third surface 12a to the upper end of the first hood portion 21. The height H1 of the first hood portion 21 is preferably 1.1 mm or more and 4.1 mm or less, and may be, for example, 2.44 mm.

[0062] The height H2 of the second hood portion 22 is set so that a predetermined space is formed between the second surface 11b of the optical functional portion 11 and the light emitting surface 30a of the light source 30. The height H2 of the second hood portion 22 indicates the length along the z-axis from the third surface 12a. The height H2 of the second hood portion 22 is preferably, for example, 0.5 mm or more and 3.0 mm or less, and may be, for example, 1.59 mm.

[0063] The thickness H3 from the third surface 12a of the flange portion 12 in the second flange portion 24 of the support is preferably, for example, 0.1 mm or more and 0.5 mm or less, and is, for example, 0.3 mm.

[0064] The configuration of the support 20 is not limited to the above configuration. The support 20 may not have one or both of the first hood portion 21 and the second hood portion 22. Depending on the shape of the outer surface of the support 20, the support first flange portion 23 may not be formed. Also, the support 20 may not have the support second flange portion 24.

[0065] The support 20 is formed of, for example, a resin material colored in a dark color system. The support 20 may contain a resin as a base material and a colorant dispersed in the resin. The base material may include a thermoplastic resin. As the thermoplastic resin, polycarbonate, acrylic, cyclic polyolefin, polyethylene terephthalate, polyester, etc. can be used. Preferably, a polycarbonate resin is used. The resin material that serves as the base material of the support 20 and the resin material of the lens 10 may be the same or different. By using the same resin material as the lens 10, the adhesiveness between the lens 10 and the support 20 can be improved. Note that when the lens 10 is formed using a thermosetting resin, the support 20 may also contain a thermosetting resin as the base material.

[0066] As the colorant added to the resin that serves as the base material, various dyes and pigments are preferably used. Specifically, Cr2O3, MnO2, Fe2O3, carbon black, etc. can be mentioned.

[0067] [Positional relationship between the lens structure 100 and the light source 30] As shown in FIGS. 1A and 1B, in a plan view, the opening 25 of the lens 10 at least partially overlaps with the light emitting surface 30a. Preferably, in a plan view, the entire light emitting surface 30a is located inside the opening 25 of the lens 10. Thereby, the light emitted from the light emitting surface 30a can be irradiated from the opening 25 more efficiently.

[0068] The shortest distance D between the light emitting surface 30a of the light source 30 and the second surface 11b of the optical functional portion 11 of the lens 10 is preferably 0.1 mm or more and 0.7 mm or less, and is, for example, 0.4 mm. Between the light emitting surface 30a of the light source 30 and the lower surface 10b of the lens 10, there may be a cavity (air layer). Alternatively, a resin that transmits light may be disposed between the light emitting surface 30a and the lower surface 10b of the lens 10.

[0069] In plan view, the size of the opening 25 is set to be, for example, equal to or larger than the size of the light emitting surface 30a. The area A1 of the opening 25 in plan view may be 1.3 times or more and 2.3 times or less the area A2 of the light emitting surface 30a. In the present embodiment, in plan view, the opening 25 is circular with a diameter of 4.21 mm, and the area A1 of the opening 25 is 13.92 mm 2 is. The area A2 of the light emitting surface 30a is 7.68 mm 2 (3.12 mm × 2.46 mm). Therefore, the area ratio (A1 / A2) of the opening 25 to the light emitting surface 30a in plan view is 1.81. Note that the suitable area ratio (A1 / A2) may vary depending on the shortest distance D between the light emitting surface 30a and the second surface 11b of the optical functional portion 11.

[0070] Further, when the first surface 11a is a convex surface having one optical axis, in plan view, the surface area A3 of the portion of the first surface 11a of the lens 10 that is located within the opening 25 (in other words, the portion not covered by the support 20) may be 2.5 times or more and 4.5 times or less the area A2 of the light emitting surface 30a of the light source 30. In the present embodiment, the surface area A3 of the portion of the first surface 11a that is located within the opening 25 is 26.0 mm 2 is, and the area A2 of the light emitting surface 30a is 7.68 mm 2 is. Therefore, the ratio (A3 / A2) of the surface area A3 of the first surface 11a to the area A2 of the light emitting surface 30a is 3.39.

[0071] 2. Light Source FIG. 5A is a schematic plan view of the light source 30, and FIG. 5B is a schematic cross-sectional view taken along line 5B-5B shown in FIG. 5A.

[0072] In the configuration illustrated in FIGS. 5A and 5B, the light source 30 generally has a rectangular shape. Each side of the outer shape of the rectangular shape is parallel to the x-axis or y-axis shown in the figure. Note that the outer shape of the light source 30 in plan view does not have to be rectangular.

[0073] The light source 30 is disposed, for example, on the first surface of a substrate 40 having wiring 42. The outer shape of the substrate 40 in plan view is, for example, substantially rectangular. Note that it may have other shapes such as circular.

[0074] The light source 30 has a light emitting surface 30a on its upper surface. The light source 30 includes a plurality of light emitting portions 30U arranged two-dimensionally. In other words, the light emitting surface 30a of the light source 30 is divided into a plurality of unit regions corresponding to the plurality of light emitting portions 30U.

[0075] The plurality of light emitting portions 30U are arranged two-dimensionally, for example, along the x-axis direction and the y-axis direction, and the arrangement pitch in the x-axis direction and the arrangement pitch in the y-axis direction are equal. The arrangement direction of the light emitting portions 30U is not limited to this. The arrangement pitches in the x-axis direction and the y-axis direction may be different, and the two arrangement directions do not have to be orthogonal. Also, the arrangement pitch is not limited to being equally spaced and may be unevenly spaced.

[0076] The number of the light emitting portions 30U, that is, the number of divisions of the light emitting surface 30a is preferably, for example, 16 or more. Thereby, the luminance distribution of the light emitting surface 30a can be controlled more precisely. On the other hand, if the number of the light emitting portions 30U is 15 or less, an increase in the size of the light source 30 can be suppressed.

[0077] When the light source device 200 is applied to the flash light of a camera, the light emitting surface 30a may be divided in consideration of the aspect ratio of the image. When the aspect ratio is 4:3, for example, it may be divided into a total of 63 light emitting portions 30U of 9 in the x-axis direction and 7 in the y-axis direction (expressed as "9×7"), or a total of 35 light emitting portions 30U of 7×5.

[0078] In the illustrated example, in the light source 30, a total of 63 light emitting portions 30U of 9×7 are arranged in a matrix. For example, the length LX in the x-axis direction on the light emitting surface 30a of the light source 30 is 3.12 mm, and the length LY in the y-axis direction is 2.46 mm. The arrangement pitches Px and Py in the x-axis direction and the y-axis direction of each light emitting portion 30U are, for example, 330 μm each. The thickness (length in the z-axis direction) of the light source 30 is, for example, 230 μm.

[0079] The plurality of light emitting portions 30U may be capable of being lit independently of each other. Thereby, it is possible to light only the selected light emitting portions among the plurality of light emitting portions 30U and turn off the other light emitting portions (partial driving). By partially driving the plurality of light emitting portions 30U, light having a desired luminance distribution can be irradiated (projected). Thereby, for example, when the light source device 200 of the present embodiment is used as a flash light of a camera, by controlling the luminance distribution of the illumination light according to the information of the region to be irradiated (such as the position and distance of the subject), black crush and white blooming can be suppressed, and a clearer photograph can be taken.

[0080] Note that depending on the use of the light source device, some or all of the plurality of light emitting portions 30U may be used in a constantly lit state.

[0081] As the light source 30, various known surface light sources can be used. Preferably, the light source 30 has a structure in which a plurality of light emitting elements 50 such as light emitting diodes are two-dimensionally arranged. The plurality of light emitting elements 50 are arranged corresponding to the plurality of light emitting portions 30U. Each of the plurality of light emitting portions 30U includes one or more corresponding light emitting elements among the plurality of light emitting elements 50. By lighting one or a plurality of light emitting elements 50 in each light emitting portion 30U independently of each other, partial driving of the light emitting portion 30U can be realized, and the luminance distribution of the light emitting surface 30a can be controlled.

[0082] In the present embodiment, the light source 30 has a plurality of light emitting elements 50, a plurality of wavelength conversion layers 60, a plurality of diffusion layers 70, and a light reflection member 80. Hereinafter, each component of the light source 30 will be described.

[0083] [Light Emitting Element 50] The plurality of light-emitting elements 50 are arranged two-dimensionally in a plan view. In the present embodiment, one corresponding light-emitting element 50 is arranged in each light-emitting portion 30U. Note that two or more light-emitting elements 50 may be arranged in each light-emitting portion 30U.

[0084] In the illustrated example, a plurality (here, 63) of light-emitting elements 50 are arranged at intervals in two directions orthogonal to each other, that is, in the x-axis direction and the y-axis direction, in a plan view. The arrangement pitch of the light-emitting elements 50 means the distance between the midpoints of two adjacent light-emitting elements in a plan view. In this example, since one light-emitting element 50 is arranged in each light-emitting portion 30U, the arrangement pitch of the light-emitting elements 50 is the same as (for example, 330 μm) the arrangement pitches Px and Py of the light-emitting portions 30U described above.

[0085] Note that the arrangement pitch of the light-emitting elements 50 in the x-axis direction and the arrangement pitch in the y-axis direction may be the same, may be different, or the two directions of the arrangement may not be orthogonal. Also, the arrangement pitch is not limited to an equal interval and may be an unequal interval. For example, a plurality of light-emitting elements 50 may be arranged so that the interval becomes wider from the center to the periphery of the substrate 40.

[0086] FIG. 5C is an enlarged cross-sectional view showing a part of the light source 30 and shows a part including three light-emitting elements among the plurality of light-emitting elements 50.

[0087] As shown in FIG. 5C, each light-emitting element 50 includes a light-emitting surface 50a mainly for extracting light, an electrode formation surface 50b located on the side opposite to the light-emitting surface 50a, a side surface 50c located between the light-emitting surface 50a and the electrode formation surface 50b, and at least a pair of positive and negative electrodes 51 located on the electrode formation surface 50b. The electrodes 51 are electrically connected to the wiring 42 on the substrate 40. For example, a wavelength conversion layer 60 is arranged on the light-emitting surface 50a of the light-emitting element 50.

[0088] As the light-emitting element 50, various forms of light-emitting elements such as semiconductor lasers and light-emitting diodes can be used. In this embodiment, the light-emitting element 50 is a light-emitting diode. The wavelength of the light emitted by the light-emitting element 50 can be arbitrarily selected. For example, as blue and green light-emitting elements, light-emitting elements using semiconductors such as nitride semiconductors (In x Al y Ga 1-x-y N, 0 ≦ X, 0 ≦ Y, X + Y ≦ 1), ZnSe, and GaP can be used. Also, as red light-emitting elements, light-emitting elements using semiconductors such as GaAlAs and AlInGaP can be used. Further, semiconductor light-emitting elements made of other materials can also be used. The composition, emission color, size, number, etc. of the light-emitting element to be used can be appropriately selected according to the purpose. The light-emitting layer of the light-emitting element 50 is capable of emitting short-wavelength light that can efficiently excite the wavelength-converting substance contained in the wavelength-converting layer 60, and preferably contains a nitride semiconductor (In x Al y Ga 1-x-y N, 0 ≦ X, 0 ≦ Y, X + Y ≦ 1). The emission wavelength can be variously selected depending on the material of the semiconductor layer and / or its degree of mixed crystal. It may have positive and negative electrodes on the same side, or may have positive and negative electrodes on different sides.

[0089] The light-emitting element 50 has, for example, a translucent substrate such as sapphire and a semiconductor laminated structure laminated on the translucent substrate. The semiconductor laminated structure includes a light-emitting layer, an n-type semiconductor layer and a p-type semiconductor layer sandwiching the light-emitting layer, and positive and negative electrodes 51 are electrically connected to the n-type semiconductor layer and the p-type semiconductor layer, respectively. The lower surfaces of the positive and negative electrodes 51 are electrically connected to the wiring 42 of the substrate 40.

[0090] The electrode 51 is made of a known metallic material that can be electrically connected to the semiconductor laminate. As the material of the electrode 51, for example, metals such as Ni, Pt, Cu, Au, Ag, and AuSn can be used. Preferably, Cu is used. The electrode 51 may have a single-layer structure or a laminated structure. A terminal protection film may be formed so as to cover the electrode 51. For example, as the terminal protection film, a Ni film (thickness: for example, 5 nm) may be formed on the surface of the electrode 51 made of Cu, and an Au film (thickness: for example, 25 nm) may be further formed on the Ni film.

[0091] The shape of the light-emitting element 50 in plan view is, for example, rectangular. There is no particular limitation on the size of the light-emitting element 50. The longitudinal and lateral lengths of the light-emitting element 50 are, for example, 1000 μm or less, preferably 500 μm or less. More preferably, it is 300 μm or less. When using the light-emitting element 50 of such a size, the number of divisions of the light-emitting surface 30a can be increased while ensuring the amount of light of each light-emitting element 50. Therefore, when the light source 30 is partially driven, the contrast between light and darkness can be generated in a smaller unit in the irradiation region.

[0092] In the present embodiment, the light-emitting element 50 has a square shape with a side length of 220 μm in plan view. The thickness of the light-transmissive substrate and the semiconductor laminate structure in the light-emitting element 50 is, for example, 120 μm, and the thickness of the electrode 51 is, for example, 40 μm. The arrangement pitch of the light-emitting element 50 in the x-axis direction and the y-axis direction is, as described above, for example, 330 μm.

[0093] [Wavelength conversion layer 60] The wavelength conversion layer 60 is disposed above (+z direction) the light-emitting surface 50a of the light-emitting element 50 and covers the light-emitting surface 50a of the light-emitting element 50. The wavelength conversion layer 60 absorbs at least a part of the light emitted by the light-emitting element 50 and emits light having a wavelength different from the wavelength of the light emitted from the light-emitting element 50.

[0094] The wavelength conversion layer 60 has an upper surface 60a and a lower surface 60b that faces the upper surface 60a and is located on the light-emitting element 50 side of the upper surface 60a. The lower surface 60b of the wavelength conversion layer 60 may be joined or adhered to the light-emitting surface 50a of the light-emitting element 50.

[0095] In plan view, the wavelength conversion layer 60 may have a substantially rectangular shape. In plan view, it is preferable that the wavelength conversion layer 60 is larger than the light-emitting surface 50a of the light-emitting element 50 and covers the entire light-emitting surface 50a. Thereby, the light emitted from the light-emitting element 50 can be efficiently incident on the wavelength conversion layer 60, and the wavelength of the light emitted from the wavelength conversion layer 60 can be converted. Also, it is possible to suppress a decrease in luminance at the portion located between the light-emitting elements on the light-emitting surface 30a.

[0096] In the present embodiment, the wavelength conversion layer 60 is, for example, a square shape with a side length of 305 μm in plan view. The thickness of the wavelength conversion layer 60 in the z-axis direction is, for example, 40 μm.

[0097] Note that, in the present embodiment, the wavelength conversion layer 60 is provided for each light-emitting element 50, but a common wavelength conversion layer may be provided for a plurality of light-emitting elements 50.

[0098] The wavelength conversion layer 60 includes, for example, a resin serving as a base material and a wavelength conversion substance dispersed in the resin. As the base material, for example, an epoxy resin, a silicone resin, a resin obtained by mixing these, or a translucent material such as glass can be used. From the viewpoints of light resistance and ease of molding, it is preferable to select a silicone resin as the base material of the wavelength conversion layer 60. In particular, it is preferable that the base material mainly contains a phenyl silicone resin. The wavelength conversion layer 60 may be made of ceramics or glass as the main material and contain a wavelength conversion substance.

[0099] The wavelength-converting material is excited by the light emitted from the light-emitting element 50 and emits light with a wavelength different from that of the light emitted from the light-emitting element 50. As the wavelength-converting material, for example, a yttrium aluminum garnet (YAG) phosphor activated with cerium (e.g., Y3(Al,Ga)5O 12 :Ce), a lutetium aluminum garnet (LAG) phosphor activated with cerium (e.g., Lu3(Al,Ga)5O 12 :Ce), a terbium aluminum garnet phosphor (e.g., Tb3(Al,Ga)5O 12 :Ce), a calcium aluminosilicate (CaO-Al2O3-SiO2) phosphor activated with europium and / or chromium, a silicate ((Sr,Ba)2SiO4) phosphor activated with europium, a β-sialon phosphor (e.g., (Si,Al)3(O,N)4:Eu), an α-sialon phosphor (e.g., M z (Si,Al) 12 (O,N) 16 (where 0 < z ≤ 2 and M is Li, Mg, Ca, Y, and lanthanoid elements excluding Ce)), a nitride-based phosphor such as a CASN phosphor (e.g., CaAlSiN3:Eu) or a SCASN phosphor (e.g., (Sr,Ca)AlSiN3:Eu), a KSF phosphor (e.g., K2SiF6:Mn 4+)Or it includes fluoride-based phosphors such as MGF-based phosphors (e.g., 3.5MgO·0.5MgF2·GeO2:Mn), sulfide-based phosphors, perovskites, chalcopyrites, quantum dots, etc. Phosphors other than these phosphors, which have the same performance, action, and effect, can also be used. The wavelength conversion layer 60 may contain one type of the above wavelength conversion substances alone, but preferably contains a plurality of types of wavelength conversion substances. For example, the wavelength conversion layer 60 preferably contains an LAG-based phosphor that produces green emission and a CASN-based phosphor that produces red emission. Thereby, a light source 30 capable of emitting white light can be realized. Also, by including a plurality of types of wavelength conversion substances, the wavelength band can be broadened and the generation of a wavelength region with weak emission intensity can be suppressed. The content of the wavelength conversion substance (phosphor) in the wavelength conversion layer 60 is, for example, 10 to 80% by weight. In this specification, % by weight means the ratio of the weight of the contained substance to the total weight including the base material and the contained substance (here, the wavelength conversion substance).

[0100] Within the wavelength conversion layer 60, the wavelength conversion substances may be arranged in any manner. For example, the wavelength conversion substances may be distributed substantially uniformly within the wavelength conversion layer 60, or may be unevenly distributed in part. "Unevenly distributed in part" includes, for example, the case where the wavelength conversion substances are arranged such that their concentration becomes high on the upper surface 60a or the lower surface 60b side of the wavelength conversion layer 60. Alternatively, in a plan view, it includes the case where the wavelength conversion substances are arranged such that their concentration becomes high near the center or near the outer periphery of the wavelength conversion layer 60. Also, the wavelength conversion layer 60 may be constituted by laminating a plurality of layers each containing a wavelength conversion substance.

[0101] The wavelength conversion layer 60 may contain materials other than the wavelength conversion substances. For example, a material having a different refractive index from the base material may be dispersed in the wavelength conversion layer 60. For example, particles having a light diffusion effect such as titanium oxide and silicon oxide can be dispersed in the base material of the wavelength conversion layer 60.

[0102] [Diffusion layer 70] The diffusion layer 70 is disposed above the wavelength conversion layer 60 in the +z direction. The diffusion layer 70 diffuses the light emitted from the light emitting element 50.

[0103] The diffusion layer 70 has an upper surface 70a and a lower surface 70b corresponding to the upper surface 70a and located on the wavelength conversion layer 60 side of the upper surface 70a. In the present embodiment, the upper surface 70a of the diffusion layer 70 is the upper surface of the light source 30 and is the light emitting surface 30a of the light source 30.

[0104] In plan view, the diffusion layer 70 may have a substantially rectangular shape. In plan view, the diffusion layer 70 is preferably larger than the light emitting surface 50a of the light emitting element 50 and covers the entire light emitting surface 50a. The size of the diffusion layer 70 may be substantially the same as the size of the wavelength conversion layer 60. In the light source 30, it is bright on the light emitting surface 50a of each light emitting element 50 and dark (luminance unevenness) in the region located between the light emitting surfaces 50a of two adjacent light emitting elements 50 (in the illustrated example, a light reflecting member 80 is disposed in this region). Also, in a white light emitting light source 30, for example, when a blue light emitting light emitting element 50 is used, there is a concern that the light emitting surface 50a emits blue light and yellow light leaks from the region between two adjacent light emitting surfaces 50a (color unevenness). By disposing the diffusion layer 70 above the wavelength conversion layer 60 in the +z direction, the light emitted from the light emitting surface 50a of the light emitting element 50 can be diffused, and such luminance unevenness and color unevenness can be suppressed.

[0105] In the present embodiment, the diffusion layer 70 is, for example, a square shape with a side length of 305 μm in plan view. The thickness of the diffusion layer 70 in the z-axis direction is, for example, 30 μm.

[0106] In addition, in the present embodiment, the diffusion layer 70 is provided for each light-emitting element 50, but a common diffusion layer 70 may be provided for a plurality of light-emitting elements 50. When a common diffusion layer 70 is provided for a plurality of light-emitting elements 50, the thickness of the diffusion layer 70 in the z-axis direction does not have to be uniform. As shown in FIG. 11, for example, in the diffusion layer 70, the portion located between adjacent light-emitting elements 50 in plan view may be thinner than the portion overlapping each light-emitting element 50. In other words, the diffusion layer 70 may have a groove 71 in the lower surface 70b in the region between adjacent light-emitting elements 50. The thickness of the diffusion layer 70 in the z-axis direction (in other words, the thickness from the upper surface 70a to the lower surface 70b of the diffusion layer 70) is, for example, 30 μm, and the depth of the groove 71 in the Z-axis direction (in other words, the depth of the groove from the lower surface 70b of the diffusion layer 70) is greater than 0 μm and, for example, 2 / 3 or less of the thickness of the diffusion layer 70 in the z-axis direction.

[0107] The diffusion layer 70 includes a resin serving as a base material and a diffusing material dispersed in the resin. As the base material, an epoxy resin, a silicone resin, a resin obtained by mixing these, or a light-transmissive material such as glass can be used. From the viewpoints of light resistance and ease of molding, it is preferable to select a silicone resin as the base material of the diffusion layer 70. In particular, it is preferable that the base material mainly contains a phenyl silicone resin. Further, by using the same resin as the wavelength conversion layer 60 for the base material of the diffusion layer 70, the adhesiveness between the wavelength conversion layer 60 and the diffusion layer 70 can be improved. Note that the diffusion layer 70 may be made mainly of ceramics or glass and contain a diffusing material.

[0108] The diffusing material is, for example, a material having a high light reflectance such as a white filler such as titanium oxide, silicon oxide, alumina, or zinc oxide. The concentration of the diffusing material is preferably 0.1% by weight or more and 3.0% by weight or less. Further, the diffusion layer 70 may contain a glass filler or the like in order to suppress the expansion and contraction of the base resin due to heat. The concentration of the glass filler is preferably 50% by weight or more and 80% by weight or less. Note that the concentrations of the diffusing material, the glass filler, etc. are not limited to these. The diffusion layer 70 preferably contains titanium oxide and a glass filler.

[0109] [Light reflecting member 80] The light reflecting member 80 is disposed on the first surface 40a of the substrate 40 and covers the first surface 40a of the substrate 40 and the side surfaces 50c of the plurality of light emitting elements 50. The light reflecting member 80 may further cover the side surfaces of the wavelength conversion layer 60 and the side surfaces of the diffusion layer 70. Further, the light reflecting member 80 may be formed to cover the side surfaces of the electrodes 51 and fill the gap between the electrode formation surface 50b of the light emitting element 50 and the first surface 40a of the substrate 40. However, the underfill resin may be filled in the gap between the electrode formation surface 50b of the light emitting element 50 and the first surface 40a of the substrate 40. By the underfill resin, it is possible to relieve the stress that may be caused by the difference in the thermal expansion coefficients between the light emitting element 50 and the substrate 40 and to enhance the heat dissipation property.

[0110] The light reflecting member 80 exposes the lower surfaces of the electrodes 51 of the respective light emitting elements 50 and the upper surfaces 70a of the respective diffusion layers 70. The lower surfaces of the electrodes 51 are electrically connected to the wirings 42 of the substrate 40. When the diffusion layer 70 is not formed, the upper surface 60a of the wavelength conversion layer 60 may be the light emitting surface 30a of the light source 30.

[0111] By disposing the light reflecting member 80 between the light emitting portions 30U, the propagation of light between the light emitting portions 30U can be suppressed, so that color unevenness is reduced. Further, when performing the partial driving described above, the contrast between the lit light emitting portion 30U and the non-lit light emitting portion 30U can be improved.

[0112] In the present embodiment, the light reflecting member 80 seals the plurality of light emitting elements 50 and holds them integrally. Note that the light reflecting member 80 may be separated for each light emitting element 50.

[0113] The light reflecting member 80 protects the plurality of light emitting elements 50. Further, the light reflecting member 80 reflects the light emitted from the side surface 50c of the light emitting element 50 and guides the light above the light emitting element 50 (in the +z direction). Furthermore, by providing the light reflecting member 80 also between the electrode forming surface 50b of the light emitting element 50 and the substrate 40, the light traveling from the electrode forming surface 50b of the light emitting element 50 toward the substrate 40 side can be reflected by the light reflecting member 80 and guided above the light emitting element 50 (in the +z direction). Thereby, the utilization efficiency of the light emitted from the light emitting element 50 can be improved.

[0114] The light reflecting member 80 includes, for example, a resin as a base material and a light reflecting substance dispersed in the resin. As the base material, an epoxy resin, a silicone resin, a resin obtained by mixing these, or a translucent material such as glass can be used. From the viewpoints of light resistance and ease of molding, it is preferable to select a silicone resin as the base material of the wavelength conversion layer 60. In particular, it is preferable that the base material mainly comprises a dimethyl silicone resin or a phenyl silicone resin. Further, by using the same resin as the wavelength conversion layer 60 and the diffusion layer 70 for the base material of the light reflecting member 80, the adhesiveness to the wavelength conversion layer 60 and the diffusion layer 70 can be improved.

[0115] As the light reflecting substance, titanium oxide, silicon oxide, zirconium oxide, yttrium oxide, yttria stabilized zirconia, potassium titanate, alumina, aluminum nitride, boron nitride, mullite, etc. can be used. Thereby, light leakage in the ±x direction, ±y direction, and -z direction of each light emitting portion 30U can be more effectively suppressed. The concentration of the light reflecting substance or the like in the light reflecting member 80 is preferably 10 wt% or more and 70 wt% or less. Further, the light reflecting member 80 may contain a glass filler or the like in order to suppress the expansion and contraction due to the heat of the resin of the base material. The concentration of the glass filler is preferably greater than 0 wt% and less than 30 wt%, and more preferably 5 wt% or more and 20 wt% or less. Note that the concentration of the light reflecting substance, glass filler, etc. is not limited thereto. The light reflecting member 80 preferably contains titanium oxide and a glass filler.

[0116] 3. Substrate 40 On the substrate 40, a light source 30 including a plurality of light-emitting elements 50 is disposed. The substrate 40 has a first surface 40a and a second surface 40b opposite to the first surface 40a.

[0117] In the example shown in FIG. 5C, the substrate 40 includes a plate-shaped base body 41, a wiring 42 formed on the first surface 40a of the base body 41, and an external terminal 43 formed on the second surface 40b of the base body 41. The first surface 40a of the substrate 40 may be the first surface 40a of the base body 41, and the second surface 40b of the substrate 40 may be the second surface 40b of the base body 41. The wiring 42 is electrically connected to the electrode 51 of the light-emitting element 50. The wiring 42 is electrically connected to the external terminal 43 via, for example, via holes and via conductors provided in the base body 41.

[0118] Examples of the material of the base body 41 include insulating members such as glass epoxy, resin, and ceramics, and metal members whose surfaces are covered with insulating members. Among them, it is preferable to use ceramics having high heat resistance and weather resistance as the material of the base body 41. Examples of the ceramic material include alumina, aluminum nitride, and mullite. These ceramic materials may be combined with insulating materials such as bismaleimide triazine resin (BT resin), glass epoxy, and epoxy resin.

[0119] The wiring 42 and the external terminal 43 can be formed of, for example, metals such as Cu, Al, Au, Ag, Pt, Ti, W, Pd, Fe, Ni, or alloys containing these.

[0120] The substrate 40 may be a wiring substrate (wiring board) provided with wiring on which light-emitting elements such as LEDs and various electrical elements can be mounted. Since a wiring pattern can be provided in advance on the wiring board, it is possible to provide more complex wiring necessary for driving (partial driving) a plurality of light-emitting portions 30U to light up independently of each other.

[0121] (Method for manufacturing the lens structure 100) Hereinafter, with reference to the drawings, an example of a method for manufacturing the lens structure 100 using a two-color molding process will be described.

[0122] In this embodiment, after molding a lens as a primary molded body, a support is molded as a secondary molded body. For molding the lens which is the primary molded body, a lower mold (hereinafter, "common mold") corresponding to the lower surface of the lens and an upper mold (hereinafter, "primary molding mold") corresponding to the upper surface of the lens are used. The common mold is commonly used for molding both the primary molded body and the secondary molded body. For molding the support which is the secondary molded body, a mold having a shape different from that of the common mold and the primary molding mold (hereinafter, "secondary molding mold") is used.

[0123] FIGS. 6A to 6E are cross-sectional views of steps for explaining the method for manufacturing the lens structure 100, respectively.

[0124] First, as shown in FIG. 6A, a common mold 110 having a fifth surface 110a and a primary molding mold 120 having a sixth surface 120a are prepared.

[0125] The fifth surface 110a of the common mold 110 is a surface that forms the lower surface of the lens, and includes a surface corresponding to the second surface of the optical functional portion and the fourth surface of the flange portion. The fifth surface 110a includes a convex portion 112 for forming the first recess of the flange portion. The sixth surface 120a of the primary molding mold 120 is a surface that forms the upper surface and the side surface of the lens, and includes a surface corresponding to the first surface of the optical functional portion of the lens, the third surface of the flange portion, and the outer surface of the flange portion.

[0126] The common mold 110 and the primary molding mold 120 are held (mold clamping) such that the fifth surface 110a of the common mold 110 faces the sixth surface 120a of the primary molding mold 120. Thereby, a first cavity 121 is formed between the common mold 110 and the primary molding mold 120. The first cavity 121 is a space for molding the lens which is the primary molded body.

[0127] Next, as shown in FIG. 6B, the lens 10 is formed as a primary molded body (primary molding step). First, the first resin is injected into the first cavity 121 from the first resin injection port 122 provided at the position where the flange portion of the lens of the primary molding die 120 is formed. As the first resin, for example, a thermoplastic transparent resin material based on polycarbonate is used. Next, the first resin in the first cavity 121 is solidified by cooling. When a thermosetting resin is used as the first resin, the first resin is cured by heating. Thereby, the lens 10 is formed from the first resin. The lens 10 has an optical functional portion 11 and a flange portion 12. On the lower surface of the flange portion 12, a first concave portion 13 corresponding to the surface shape of the convex portion 112 of the common mold 110 is formed.

[0128] Subsequently, as shown in FIG. 6C, a first mold opening step is performed by moving one of the common mold 110 and the primary molding die 120 in a direction away from the other. At this time, as shown in the figure, the lens 10, which is the primary molded body, is released from the primary molding die 120 and remains on the common mold 110. In the present embodiment, since the first concave portion 13 is provided on the lower surface 10b of the lens 10, the contact area between the lower surface 10b of the lens 10 and the fifth surface 110a of the common mold 110 is larger than the case where the first concave portion 13 is not provided on the lower surface 10b of the lens 10. Therefore, the adhesion between the lens 10 and the common mold 110 is enhanced. For this reason, the lens 10 can be released from the primary molding die 120 while the lens 10 is held on the common mold 110.

[0129] Thereafter, as shown in FIG. 6D, a secondary molding die 130 having a seventh surface 130a is prepared. Next, the secondary molding die 130 is placed on the common die 110 holding the lens 10 and clamped. Thereby, a second cavity 131 is formed between the common die 110, the lens 10, and the secondary molding die 130. The second cavity 131 is a space for molding a support body which is a secondary molded body. A part of the upper surface 10a of the lens 10 is in contact with the seventh surface 130a of the secondary molding die 130. In the illustrated example, the space between the edge of the first surface 11a of the optical functional portion 11 of the lens 10, the third surface 12a and the outer surface 12c of the flange portion 12, the seventh surface 130a of the secondary molding die 130, and the side surface 110b of the common die 110 becomes the second cavity 131.

[0130] Next, as shown in FIG. 6E, a support body 20 is molded as a secondary molded body (secondary molding step). First, a second resin is injected into the second cavity 131 from a second resin injection port 132 provided at a position where a first flange portion of the support body of the secondary molding die 130 is formed. As the second resin, for example, a thermoplastic resin material colored in a dark color system is used. Next, the second resin in the second cavity 131 is solidified by cooling. When a thermosetting resin is used as the second resin, the second resin is cured by heating. Thereby, the support body 20 is molded from the second resin. The support body 20 and the lens 10 are integrated by the support body 20 being in contact with the edge of the first surface 11a of the optical functional portion 11 of the lens 10, the third surface 12a and the outer surface 12c of the flange portion 12. In this way, the lens structure 100 is obtained. In FIGS. 6D and 6E, in consideration of the filling property of the second resin, the second resin injection port 132 is provided at a position where the first flange portion of the support body of the secondary molding die 130 is formed, but the position where the second resin injection port 132 is provided is not limited to this. For example, the second resin injection port 132 may be provided at a position where a second hood portion of the secondary molding die 130 is formed.

[0131] The support 20 is in contact with at least a part of the upper surface 10a of the lens 10. As shown in the figure, the support 20 may cover the outer surface of the lens 10 (that is, the outer surface 12c of the flange portion 12). In this embodiment, since the support 20 is molded with the lower surface 10b of the lens 10 in contact with the common mold 110, the support 20 and the lower surface 10b of the lens 10 do not come into contact with each other.

[0132] Next, the secondary molding die 130 and the common die 110 are opened (hereinafter referred to as the "second die opening process"). As a result, the lens structure 100 is released from the secondary molding die 130 while being held on the common die 110. Subsequently, the lens structure 100 is removed by releasing it from the common die 110. In this embodiment, as described above, the first hood portion 21 and the second hood portion 22 of the support 20 are inclined so as to approach the optical axis of the lens 10 as they go in the +z direction, and the first hood portion 21 has a tapered shape in the +z direction. Therefore, the die opening of the secondary molding die 130 and the common die 110 becomes easy.

[0133] In this embodiment, after molding the lens 10 as the primary molded body, the support 20 is molded as the secondary molded body. If the support 20 is molded first (using the support 20 as the primary molded body), then when molding the lens 10 subsequently (using the lens 10 as the secondary molded body), the resin of the material cannot be injected from the side surface of the mold because of the presence of the support 20. If the resin is injected from other than the side surface of the mold, a resin injection port will be arranged in the region of the optical functional portion 11 of the lens 10, which may affect the optical action. Therefore, it is preferable to mold the lens 10 in the primary molding process and mold the support 20 in the secondary molding process.

[0134] Conventionally, when manufacturing a lens structure using a two-color molding process, if the contact area between the upper surface of the lens and the upper mold is larger than the contact area between the lower surface of the lens and the lower mold, there is a risk that when the mold is opened, the lower surface of the lens will come off the lower mold and the lens will remain on the upper mold (a phenomenon called "tralling"). On the other hand, according to this embodiment, by providing the first concave portion 13 on the lower surface 10b of the lens 10, the contact area between the lens 10 and the common mold 110 increases, and the adhesion between the lower surface 10b of the lens 10 and the fifth surface 110a of the common mold 110 can be enhanced. Therefore, the trailing phenomenon in the first mold opening process can be suppressed, and the primary molding mold 120 and the lens 10 can be more easily demolded. As a result, after the first mold opening process, the support 20, which is a secondary molded body, can be continuously molded on the lens 10. According to this embodiment, when molding the lens structure 100, a mold with a complex structure is not required, and by using only three types of molds, namely the common mold 110, the primary molding mold 120, and the secondary molding mold 130, the trailing phenomenon can be suppressed.

[0135] The adhesion between the lens 10 and the common mold 110 can be adjusted by, in addition to the contact area between the lower surface 10b of the lens 10 and the fifth surface 110a of the common mold 110, the planar shape of the first concave portion 13, the inclination angle of the inner surface of the first concave portion 13, the position, the number, etc.

[0136] (Modification example) Hereinafter, a modification example of the lens according to the present disclosure will be described. The lens of the modification example is different from the lens shown in FIGS. 3A and 3B in that it has a convex portion or a second concave portion on the inner surface of the first concave portion. Hereinafter, the points different from the first concave portion shown in FIGS. 3A and 3B will be mainly described, and the description of the same structure will be omitted. Also, in each drawing showing the modification example, for clarity, the same reference numerals are assigned to the components similar to those shown in FIGS. 3A and 3.

[0137] In Modification Examples 1 to 4, a case where the first concave portion is an annular groove in a plan view will be described as an example. However, the planar shape of the first concave portion is not limited to an annular shape.

[0138] FIG. 7A is a schematic enlarged plan view showing a part of the flange portion 12 of the lens 10 of Modification 1, and FIG. 7B is a schematic enlarged cross-sectional view taken along line 7B-7B shown in FIG. 7A. FIG. 8A is a schematic enlarged plan view showing a part of the flange portion 12 of the lens 10 of Modification 2, and FIG. 8B is a schematic enlarged cross-sectional view taken along line 8B-8B shown in FIG. 8A.

[0139] As shown in the drawing, the inner surface of the first recess 13 includes a first side surface 13s1 provided along the outer periphery of the optical functional portion, and a second side surface 13s2 that faces the first side surface 13s1 and is located closer to the optical functional portion side than the first side surface 13s1.

[0140] In Modification 1, the first recess 13 has one second recess 14 extending along the first side surface 13s1 on the first side surface 13s1. By providing the second recess 14, the adhesion between the lower surface of the lens 10 and the common mold can be more effectively enhanced in the first mold opening step. The second recess 14 may extend along the entire first side surface 13s1 so as to surround the optical functional portion in plan view. By forming the second recess 14 over the entire circumference of the first side surface 13s1, the trailing phenomenon can be more effectively suppressed.

[0141] In Modification 2, the first recess 13 has a plurality of second recesses 14 on the first side surface 13s1. The second recesses 14 are arranged at intervals from each other in plan view. For example, when one annular second recess 14 extending along the first side surface 13s1 is provided on the first side surface 13s1 as in Modification 1, depending on the material of the lens 10, the adhesion between the lower surface of the lens 10 and the common mold may be too strong. Therefore, by selecting the size, number, arrangement pitch, etc. of the second recesses 14, the strength of the adhesion between the lower surface of the lens 10 and the common mold can be adjusted. As a result, while suppressing the trailing phenomenon in the first mold opening step, it becomes possible to more easily release the lens structure 100 from the common mold 110 after the secondary molding step.

[0142] In Modification 1 and Modification 2, the depth of the second recess 14 (in other words, the maximum width in the xy plane) w3 is preferably, for example, not less than 1 / 3 and not more than 1 / 2 of the width w2 of the first recess 13, and is, for example, 0.1 mm. The length d3 of the second recess 14 in the z-axis direction is preferably, for example, not less than 1 / 3 and not more than 2 / 3 of the depth d2 of the first recess 13, and is, for example, 0.2 mm.

[0143] FIG. 9A is a schematic enlarged plan view showing a part of the flange portion 12 of the lens 10 of Modification 3, and FIG. 9B is a schematic enlarged cross-sectional view taken along line 9B-9B shown in FIG. 9A. FIG. 10A is a schematic enlarged plan view showing a part of the flange portion 12 of the lens 10 of Modification 4, and FIG. 10B is a schematic enlarged cross-sectional view taken along line 10B-10B shown in FIG. 10A.

[0144] In Modification 3, the first recess 13 has one convex portion 15 extending along the first side surface 13s1 on the first side surface 13s1. Thereby, in the mold opening process, the adhesion between the lower surface of the lens 10 and the common mold can be more effectively enhanced. The convex portion 15 may extend along the entire first side surface 13s1 so as to surround the optical functional portion in plan view, for example. By forming the convex portion 15 over the entire circumference of the first side surface 13s1, the trailing phenomenon can be more effectively suppressed.

[0145] In Modification 4, the first recess 13 has a plurality of convex portions 15 on the first side surface 13s1. The plurality of convex portions 15 are arranged at intervals from each other in plan view. For example, when one annular convex portion 15 extending along the first side surface 13s1 is provided on the first side surface 13s1 as in Modification 3, the adhesion between the lower surface of the lens 10 and the common mold may be too strong depending on the material of the lens 10. Therefore, by selecting the size, number, arrangement pitch, etc. of the convex portion 15, the strength of the adhesion between the lower surface of the lens 10 and the common mold can be adjusted. Thereby, while suppressing the trailing phenomenon in the first mold opening process, it becomes possible to more easily release the lens structure 100 from the common mold 110 after the secondary molding process.

[0146] In Modification Example 3 and Modification Example 4, the height of the convex portion 15 (in other words, the maximum width in the xy plane) w4 is preferably, for example, 1 / 3 or more and 1 / 2 or less of the width w2 of the first concave portion 13, and is, for example, 0.1 mm. The length d4 of the convex portion 15 in the z-axis direction is preferably, for example, 1 / 3 or more and 2 / 3 or less of the depth d2 of the first concave portion 13, and is, for example, 0.2 mm.

[0147] The second concave portion 14 or the convex portion 15 preferably has an R shape. Thereby, after the secondary molding process, it becomes easier to demold the two-color molded body (lens structure 100) from the common mold. As a result, it is possible to suppress deformation or the like of the secondary molded body during demolding.

[0148] The size, number, shape, etc. of the second concave portion 14 or the convex portion 15 provided in the first concave portion 13 are not limited to the illustrated examples. The shape of the second concave portion 14 and the convex portion 15 in a cross-sectional view in the xy plane may be rectangular. Also, both a convex portion and a second concave portion may be formed in one first concave portion 13.

[0149] In Modification Examples 1 to 4, the second concave portion 14 or the convex portion 15 is provided on the first side surface 13s1, which is farther from the optical function portion 11, of the first side surface 13s1 and the second side surface 13s2 of the first concave portion 13. Thereby, the influence of the second concave portion 14 or the convex portion 15 on the optical action of the optical function portion 11 can be more reliably suppressed.

[0150] Further, the second concave portion 14 or the convex portion 15 is preferably provided on the first side surface 13s1 of the first concave portion 13. In the present embodiment, by providing the first concave portion 13 in the flange portion 12, the portion of the flange portion 12 located on the outer surface 12c side rather than the first concave portion 13 is more likely to be deformed by an external force or the like. Specifically, after the secondary forming process, when the lens structure 100 is released from the common mold while being bent, the portion of the flange portion 12 located on the optical function portion 11 side rather than the first concave portion 13 is adjacent to the optical function portion 11 and is difficult to deform. However, since there is room (i.e., space) for deformation in the above portion of the flange portion 12, it is more likely to deform. Therefore, by providing the second concave portion 14 or the convex portion 15 on the first side surface 13s1 of the first concave portion 13, when the second concave portion 14 or the convex portion 15 is arranged in the portion of the flange portion 12 that is easily deformed, the obtained lens structure 100 can be more easily released from the common mold after the secondary forming process than when the second concave portion 14 or the convex portion 15 is arranged on the second side surface 13s2.

[0151] Note that the second concave portion 14 or the convex portion 15 may be provided on the second side surface 13s2 of the first concave portion 13. In this case, the second concave portion 14 or the convex portion 15 is preferably arranged so as not to overlap the optical function portion 11 in plan view. Thereby, the influence on the optical action of the optical function portion 11 can be reduced.

[0152] When a plurality of second concave portions 14 or a plurality of convex portions 15 are provided in one first concave portion 13, a part of the second concave portions 14 or a part of the convex portions 15 may be provided on the first side surface 13s1 of the first concave portion 13, and the remaining part of the second concave portions 14 or the remaining part of the convex portions 15 may be provided on the second side surface 13s2.

Industrial Applicability

[0153] The light source device and the lens structure of the present disclosure can be suitably used for light source devices for various applications, such as illumination, a camera flash light, and an in-vehicle headlight. In particular, it is suitably used for a flash light of a small camera mounted on a mobile phone or the like.

Explanation of Reference Numerals

[0154] 10 lens 10a Upper surface of the lens 10b Lower surface of the lens 11 Optical functional part 11a First surface 11b Second surface 11P Outer periphery of the optical functional part 11 12 Flange part 12a Third surface 12b Fourth surface 12c Outer surface 13 First concave part 13s1 First side surface 13s2 Second side surface 14 Second concave part 15 Convex part 20 Support body 20S Contact surface 21 First hood part 22 Second hood part 23 First flange part of the support body 24 Second flange part of the support body 25 Opening 30 Light source 30a Light emitting surface 30U Light emitting part 40 Substrate 40a First surface of the substrate 40b Second surface of the substrate 41 Substrate body 42 Wiring 43 External terminal 50 Light emitting element 50a Light output surface 50b Electrode formation surface 50c Side surface 51 Electrode 60 Wavelength conversion layer 70 Diffusion layer 60a, 70a Upper surface 60b, 70b Lower surface 80 Light reflecting member 100 Lens structure 110 Common mold 110a Fifth surface 110b Side surface 112 Convex part 120 Mold for primary forming 6th side of 120a 1st cavity of 121 1st resin injection port of 122 Mold for secondary molding of 130 7th side of 130a 2nd cavity of 131 2nd resin injection port of 132 Light source device of 200

Claims

1. A light source having a light emitting surface on the upper surface, the light source including a plurality of light emitting portions arranged two-dimensionally, A lens disposed above the light emitting surface of the light source with a space therebetween, the lens having an optical function portion and a flange portion disposed along the outer periphery of the optical function portion, A support body made of a light shielding member and supporting at least the flange portion of the lens, The optical function portion includes a first surface located on the side opposite to the light source and a second surface located on the side opposite to the first surface and facing the light source. The surface area of the first surface is larger than the surface area of the second surface. In plan view, the first surface and the second surface cover the plurality of light emitting portions, The flange portion has a third surface located on the same side as the first surface and a fourth surface located on the same side as the second surface, The flange portion has at least one first recess on the fourth surface, The at least one first recess is exposed to a cavity located between the light emitting surface of the light source, the second surface of the optical function portion, and the fourth surface of the flange portion, a light source device.

2. The support body has a contact surface in contact with at least a part of the third surface of the flange portion, In plan view, the contact surface of the support body and the at least one first recess of the flange portion overlap each other. The light source device according to claim 1.

3. The lens is a convex lens in which the first surface and the second surface are convexly curved. The light source device according to claim 1 or 2.

4. The radius of curvature of the first surface is smaller than the radius of curvature of the second surface. The light source device according to claim 3.

5. The radius of curvature of the first surface is 1.5 mm or more and 3.0 mm or less, and the radius of curvature of the second surface is 5.0 mm or more and 30.0 mm. The light source device according to claim 4.

6. The at least one first recess includes a groove surrounding the optical function portion in plan view. The light source device according to any one of claims 1 to 5.

7. The at least one first recess includes a plurality of recesses arranged at intervals. The light source device according to any one of claims 1 to 6.

8. The at least one first recess has at least one convex portion and / or at least one second recess on the inner surface. The light source device according to any one of claims 1 to 7.

9. The inner surface of the at least one first recess includes a first side surface provided along the outer periphery of the optical functional portion, and a second side surface facing the first side surface and located closer to the optical functional portion than the first side surface. The light source device according to claim 8, wherein the at least one convex portion and / or the at least one second recess is disposed on the first side surface.

10. The light source device according to any one of claims 1 to 9, wherein the support and the lens are two-color molded bodies.

11. The light source device according to any one of claims 1 to 10, wherein the support does not contact the at least one first recess.

12. The flange portion includes an outer side surface adjacent to the third surface and the fourth surface. The support includes a first hood portion extending from the third surface of the flange portion to the side opposite to the light source, and a second hood portion extending from the outer side surface of the flange portion to the light source side. The light source device according to any one of claims 1 to 10, wherein the at least one first recess overlaps the first hood portion in plan view and is disposed inside the second hood portion.

13. The light source device further includes a substrate, wherein the light source is disposed on a first surface of the substrate, and the second hood portion is fixed to the substrate. The light source device according to claim 12.

14. The light source device according to any one of claims 1 to 13, wherein the support further covers an edge portion of the first surface of the optical functional portion.

15. In plan view, the surface area of the portion of the first surface of the lens that is not covered by the support is 2.5 times or more and 4.5 times or less the area of the light emitting surface of the light source. The light source device according to claim 14.

16. The light source device according to any one of claims 1 to 15, wherein the lens has one optical axis with respect to the light emitting surface.

17. The light source device according to any one of claims 1 to 16, wherein the plurality of light emitting portions can be lit independently of each other.

18. The light source is a plurality of light emitting elements arranged two-dimensionally, and each of the plurality of light emitting portions includes one or more corresponding light emitting elements among the plurality of light emitting elements. The plurality of light emitting elements, and a wavelength conversion layer covering the light emitting surfaces of the plurality of light emitting elements. The light source device according to any one of claims 1 to 17.

19. a lens having an optical functional portion and a flange portion disposed along the outer periphery of the optical functional portion. A lens structure including a light-shielding member and a support that supports at least the flange portion of the lens, wherein the lens and the support are a single two-color molded body, the optical functional portion has a first surface and a second surface located on the side opposite to the first surface, and the surface area of the first surface is larger than the surface area of the second surface, the flange portion has a third surface located on the same side as the first surface and a fourth surface located on the same side as the second surface, the flange portion has at least one first recess on the fourth surface, the lens structure in which the at least one first recess is in contact with an air layer.

20. the support has a contact surface that contacts at least a part of the third surface of the flange portion, The lens structure according to claim 19, wherein in a plan view, the contact surface of the support and the at least one first recess of the flange portion overlap each other.

Images