Light-emitting module and smart phone

Abstract

The present invention addresses the problem of providing a light-emitting module that can be easily assembled. To this end, the light-emitting module has: a substrate; a light source disposed on the substrate; an electronic component disposed on the substrate at a distance from the light source; and a first translucent member covering the light source and the electronic component, the first translucent member including a first lens and a first support portion supporting the first lens and having a light-diffusing substance, the light diffusivity of the first support portion being higher than the light diffusivity of the first lens, the first lens overlapping the light source in a plan view, and the second lens overlapping the light source in a plan view. The first support portion overlaps the electronic component.

Description

Technical Field

[0001] The invention relates to a lighting module and a smart phone. Background Art

[0002] In the past, light-emitting modules having light-emitting elements such as LEDs (Light Emitting Diodes) have been widely used. For example, Patent Document 1 discloses a light-emitting module comprising: a light-emitting element and an electronic component disposed on a substrate; a lens disposed at a position opposite to the light-emitting element and the electronic component and spaced from the light-emitting element and the electronic component; and a covering member such as a shielding resin containing a coloring substance disposed between the lens and the electronic component.

[0003] <Prior Art Literature>

[0004] <Patent Documents>

[0005] Patent Document 1: Japanese Patent Application Publication No. 2020-181027 Summary of the invention

[0006] <Problems to be Solved by the Invention>

[0007] An object of the embodiments of the present invention is to provide a light emitting module that can be easily assembled.

[0008] <Methods used to solve the problem>

[0009] A light-emitting module according to one embodiment of the present invention comprises: a substrate; a light source arranged on the substrate; an electronic component arranged on the substrate and separated from the light source; and a first light-transmitting member, which includes a first lens and a first supporting portion that supports the first lens and has a light diffusing material, and covers the light source and the electronic component, wherein the light diffusivity of the first supporting portion is higher than that of the first lens, and when viewed from above, the first lens overlaps with the light source, and the first supporting portion overlaps with the electronic component.

[0010] <Effects of the Invention>

[0011] According to the embodiment of the present invention, it is possible to provide a light emitting module that can be easily assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic plan view of the light emitting module according to the first embodiment.

[0013] Figure 2A yes Figure 1 Schematic cross-sectional view of line IIA-IIA in FIG.

[0014] Figure 2B yes Figure 1 Schematic cross-sectional view of line IIB-IIB in FIG.

[0015] Figure 3 It is a schematic plan view of a light source included in the light emitting module according to the first embodiment.

[0016] Figure 4 yes Figure 3 Schematic cross-sectional view along line IV-IV in FIG.

[0017] Figure 5 This is a schematic cross-sectional view of a light emitting module according to a first modification of the first embodiment.

[0018] Figure 6 It is a schematic cross-sectional view of a light emitting module according to a second modification example of the first embodiment.

[0019] Figure 7 It is a schematic plan view of a light emitting module according to a second embodiment.

[0020] Figure 8 yes Figure 7 Schematic cross-sectional view along line VIII-VIII in FIG.

[0021] Fig. 9 It is a schematic rear view of a smartphone according to the third embodiment.

[0022] Fig.10 is a schematic cross-sectional view of a light emitting module included in a smartphone according to a third embodiment. Fig. 9 Schematic cross-sectional view of line XX in FIG.

[0023] Fig.11 It is a schematic cross-sectional view of a first modified example of the light emitting module included in the smartphone according to the third embodiment.

[0024] Fig.12 It is a schematic cross-sectional view of a second modified example of the light emitting module included in the smartphone according to the third embodiment.

[0025] Explanation of symbols

[0026] 1: substrate; 11: adhesive member; 12: wiring; 13: conductive member; 14: adhesive member; 2: light source; 2c: center of light emitting area; 20, 20-1 to 20-9: light emitting portion; 21, 21-1 to 21-9: light emitting surface; 22: light emitting element; 23: electrode; 24: wavelength conversion member; 25: covering member; 250: light emitting area; 251: corner; 252: outer edge; 3: electronic component; 4: first light-transmitting member; 41: first lens; 41c: optical axis of first lens; 410: interface; 411: first convex surface; 412: second convex surface; 413: first joint portion; 42: first supporting portion; 421: upper portion; 422: first cylindrical portion; 423: upper surface; 424: lower surface; 425: convex portion; 426: second joint portion; 427: outer side surface; 428: Inner surface; 429: first connecting surface; 43: light diffusion material; 44: adhesive member; 45: recess; 451: upper surface; 452: side surface; 453: bottom surface; 454: inclined portion; 455: total reflection portion; 46: third supporting portion; 461: second connecting surface; 5: second light-transmitting member; 51: second lens; 51c: optical axis of the second lens; 511: lower surface; 512: convex portion; 52: second supporting portion; 53: second barrel; 6: external light sensor; 7: third lens; 100, 100a~100f: light-emitting module; 200, 200-1~200-3: camera device; 300: housing; 1000: smart phone; dx: first light-emitting surface interval; dy: second light-emitting surface interval; F: focus; G: external light; L: light; Wx: first width; Wy: second width. DETAILED DESCRIPTION

[0027] The light-emitting module involved in the embodiment of the present invention is described in detail with reference to the accompanying drawings. However, the method shown below is an illustration of the light-emitting module used to implement the technical idea of ​​the present embodiment, and is not limited to the following content. In addition, the size, material, shape and relative arrangement of the components described in the embodiment, unless otherwise specified, are not intended to limit the scope of the present invention thereto, and are merely simple illustrative examples. In addition, the size, positional relationship, etc. of the components shown in the various drawings are sometimes exaggerated in order to make the description clearer. In addition, in the following description, the same name and symbol represent the same or homogeneous components, and detailed descriptions are appropriately omitted. As a sectional view, an end view showing only the cross-section is sometimes used.

[0028] In the following figures, directions are sometimes indicated by the X-axis, Y-axis, and Z-axis. The X-axis, Y-axis, and Z-axis are mutually orthogonal directions. The X-direction along the X-axis and the Y-direction along the Y-axis are assumed to represent directions along the light-emitting surface of the light-emitting unit of the light-emitting module involved in the embodiment. The Z-direction along the Z-axis is assumed to represent a direction orthogonal to the above-mentioned light-emitting surface. That is, the light-emitting surface of the light-emitting unit is parallel to the XY plane, and the Z-axis is orthogonal to the XY plane.

[0029] The direction in which the arrow in the X direction points is recorded as the +X side, and the opposite side of the +X side is recorded as the -X side. The direction in which the arrow in the Y direction points is recorded as the +Y side, and the opposite side of the +Y side is recorded as the -Y side. The direction in which the arrow in the Z direction points is recorded as the +Z side, and the opposite side of the +Z side is recorded as the -Z side. In the embodiment, the light-emitting portion of the light-emitting module emits light to the +Z side as an example. In addition, the top view in the terminology of the embodiment refers to observing the object from the emission surface side of the first lens of the light-emitting module involved in the embodiment. In addition, in this specification, in addition to the part that can be directly visually confirmed from above, the part that cannot be directly visually confirmed from above is sometimes described in a way that can be seen through. The emission surface of the first lens refers to the surface where the light emitted from the light source of the light-emitting module involved in the embodiment is emitted through the first lens. However, these do not limit the direction of the light-emitting module involved in the embodiment when it is used, and the direction of the light-emitting module involved in the embodiment is arbitrary.

[0030] In addition, in this specification, the surface of the object when viewed from the +Z side is referred to as the "upper surface", and the surface of the object when viewed from the -Z side is referred to as the "lower surface". In the embodiment shown below, the so-called along the X-axis, Y-axis, and Z-axis includes that the object has a slope within the range of ±10° with respect to these axes. In addition, in this embodiment, orthogonality may also include an error within ±10° relative to 90°.

[0031] In addition, in this specification or claims, when a certain component has multiple components and is distinguished and expressed separately, sometimes the components are marked with "first", "second", etc. at the beginning to distinguish them. In addition, the objects distinguished in this specification and the claims may be different. Therefore, even if the claims record a component with the same mark as in this specification, the object determined by the component may be inconsistent between this specification and the claims.

[0032] For example, in this specification, there are constituent elements marked as "first", "second", and "third" for distinction. When the constituent elements marked as "first" and "third" in this specification are recorded in the claims, or when the constituent elements marked as "first" and constituent elements not marked with specific serial numbers are recorded in the claims, from the perspective of easy identification, they are sometimes marked as "first" and "second" in the claims to distinguish the constituent elements. In this case, the constituent elements marked as "first" and "second" in the claims refer to the constituent elements marked as "first" and "third" or the constituent elements not marked with specific serial numbers in this specification, respectively. In addition, the application objects of this rule are not limited to constituent elements, and it can also be reasonably and flexibly applied to other objects.

[0033] [First embodiment]

[0034] <Configuration Example of Light Emitting Module According to First Embodiment>

[0035] (Overall structure)

[0036] Reference Figure 1 , Figure 2A as well as Figure 2B , the overall structure of the light emitting module according to the first embodiment is described. Figure 1 It is a schematic plan view showing an example of the light emitting module 100 according to the first embodiment. Figure 2A yes Figure 1 Schematic cross-sectional view of line IIA-IIA in FIG. Figure 2B yes Figure 1 Schematic cross-sectional view of line IIB-IIB in FIG.

[0037] like Figure 1 as well as Figure 2A As shown, the light emitting module 100 comprises: a substrate 1; a light source 2, which is arranged on the substrate 1; and an electronic component 3, which is arranged on the substrate 1 and separated from the light source 2. In addition, the light emitting module 100 comprises: a first light-transmitting member 4, which includes a first lens 41 and a first support portion 42 having a light diffusing material and supporting the first lens 41, and covers the light source 2 and the electronic component 3. The light diffusivity of the first support portion 42 is higher than that of the first lens 41, and when viewed from above, the first lens 41 overlaps with the light source 2, and the first support portion 42 overlaps with the electronic component 3.

[0038] In the light emitting module 100, the first support portion 42 overlaps with the electronic component 3 when viewed from above, so that the electronic component 3 can be made difficult to visually confirm from the outside of the light emitting module 100 due to the light diffusivity of the first support portion 42. As a result, the process of arranging a shielding resin on the electronic component 3 for making the electronic component 3 difficult to visually confirm from the outside can be omitted. As long as the process of arranging the shielding resin on the electronic component 3 is omitted, the shielding resin will not contact the light source 2 by mistake. As a result, in this embodiment, a light emitting module 100 that can be easily assembled can be provided. In addition, by making the electronic component 3 difficult to visually confirm from the outside of the light emitting module 100, the aesthetic appearance of the light emitting module 100 can be improved.

[0039] In addition, Figure 1 , Figure 2A as well as Figure 2B In the example shown, the first support portion 42 contains a light diffusing material 43. The light diffusing material 43 can be titanium oxide, barium titanate, aluminum oxide, silicon oxide, etc. In the light emitting module 100, since the first support portion 42 contains the light diffusing material 43, the first support portion 42 can be easily given light diffusivity.

[0040] In addition, Figure 1 , Figure 2A as well as Figure 2BIn the example shown, the first lens 41 and the first support portion 42 constitute a molded body directly bonded at their respective interfaces. More specifically, the first lens 41 is configured to include a resin having light transmittance. The first support portion 42 is configured to be light transmittance and to include a resin containing a light diffusing substance 43. The electronic component 3 is preferably difficult to visually confirm from the outside of the light emitting module 100. The light diffusivity of the first support portion 42 is higher than that of the first lens 41. In addition, the so-called light diffusivity of the first support portion 42 is higher than that of the first lens 41, which means, for example, that the haze value of the first support portion 42 is higher than that of the first lens 41. The haze value of the first support portion 42 is greater than 10% and less than 90%. The haze value of the first lens 41 is preferably less than 10% and less than 5%. The first lens 41 may also be configured to include a resin containing a light diffusing substance 43. In this case, the content of the light diffusing substance 43 in the first lens 41 is less than the content of the light diffusing substance 43 in the first support portion 42. On the other hand, when the electronic component 3 includes an external light sensor as described later, the first support portion 42 needs to have light transmittance in order for the external light sensor to receive external light incident from the outside of the light emitting module 100 to the inside of the light emitting module 100. Therefore, the light transmittance in the first lens 41 and the first support portion 42 is preferably a property of having a light transmittance of 20% or more and 85% or less, preferably 40% or more and 70% or less, relative to the light incident from the outside to the first lens 41. In the present embodiment, the light transmittance of the first support portion 42 is lower than the light transmittance of the first lens 41. However, as long as the external light or the light emitted by the light source 2 is scattered by the light diffusivity of the first support portion 42, so that it is difficult to visually confirm the electronic component 3 from the outside of the light emitting module 100, the light transmittance of the first support portion 42 may be equal to the light transmittance of the first lens 41. In the first support portion 42, the resin as the base material containing the light diffusing substance 43 may be the same as or different from the resin constituting the first lens 41. The first lens 41 and the first support portion 42 constituting the molded body directly bonded at their respective interfaces can be manufactured by, for example, two-color molding using a molding die. Figure 1 , Figure 2A as well as Figure 2B In the illustrated example, the light emitting module 100 can be easily assembled by using the first lens 41 and the first support portion 42 that constitute a molded body that is directly bonded at the respective interfaces.

[0041] In addition, in the light emitting module 100, the first support portion 42 may overlap with the outer edge of the light emitting region 250 in the light source 2 in a plan view. Figure 1 In the example shown in FIG. 1 , the first support portion 42 overlaps with the corner portion 251 in the outer edge of the light emitting region 250 in a plan view. However, the first support portion 42 may overlap with the corner portion 251 in a plan view. Figure 1 as well as Figure 2B The first support portion 42 overlaps with the outer edge 252 of the straight portion of the light emitting region 250 except the corner 251. That is, the outer edge of the light emitting region 250 includes the corner 251 of the light emitting region 250 and the outer edge 252 of the straight portion of the light emitting region 250. The first support portion 42 may also overlap with at least one of the corner 251 of the light emitting region 250 and the outer edge 252 of the straight portion when viewed from above.

[0042] The light source 2 includes at least one light emitting surface 21, and the light emitting area 250 is referred to as an area including at least one light emitting surface 21. When the light source 2 includes one light emitting surface 21, the light emitting area 250 is an area surrounded by the outer edge of one light emitting surface 21. In this case, the outer edge of the light emitting area 250 is equivalent to the outer edge of one light emitting surface 21. When the light source 2 includes multiple light emitting surfaces 21, the light emitting area 250 is an area formed by connecting the outer edges of the light emitting surfaces 21 when viewed from above. In this case, the outer edge of the light emitting area 250 is equivalent to a ring-shaped line formed by connecting the outer edges of the light emitting surfaces 21 when viewed from above. In addition, at the outer edge of the light emitting area 250, the so-called ring-shaped means that the starting point and the end point are consistent, and it is not limited to a circle or an ellipse. In addition, the shape when viewed from above may also be a ring-shaped or polygonal ring-shaped shape including straight lines and arc-shaped lines. Figure 1 , Figure 2A as well as Figure 2B In the example shown, the light source 2 has nine light emitting units 20, each of which includes a light emitting surface 21. The nine light emitting surfaces 21 are arranged neatly in a virtual plane (eg, XY plane) in a matrix of three rows and three columns. Figure 1 , Figure 2A as well as Figure 2B In the example shown, the light emitting region 250 is configured to include nine light emitting surfaces 21. In addition, the outer edge of the light emitting region 250 is substantially rectangular.

[0043] The center 2c of the light-emitting area 250 overlaps with the optical axis 41c of the first lens 41 when viewed from above. Since the corner 251 of the light-emitting area 250 is far away from the optical axis 41c of the first lens 41, a part of the light emitted from the light-emitting portion 20 does not enter the first lens 41, which may become the main cause of stray light. Stray light reduces the quality of light emitted from the light-emitting module 100. Here, the quality of light emitted from the light-emitting module 100 refers to at least one of the performance and function required for the light emitted from the light-emitting module 100. For example, in the light-emitting module 100, if stray light is generated, the position accuracy of the irradiated light, the height of the illumination, the uniformity of the illumination distribution, etc. may not meet the requirements on the irradiation surface irradiated by the light emitted from the light-emitting module 100.

[0044] exist Figure 1 , Figure 2Aas well as Figure 2B In the example shown, the first support portion 42 overlaps the corner portion 251 in a plan view, so the light emitted from the vicinity of the corner portion 251 of the light emitting region 250 toward the first support portion 42 is scattered by the first support portion 42. Thus, it is possible to reduce the amount of light scattered by the first support portion 42 included in the light emitted from the light emitting module 100, and it is possible to reduce the amount of light that becomes stray light in the light emitted from the vicinity of the corner portion 251.

[0045] exist Figure 1 In the example shown, the outer edge shape of the light emitting module 100 when viewed from above is roughly circular. However, the shape of the light emitting module 100 when viewed from above may be roughly rectangular, roughly elliptical, or roughly polygonal. The light source 2 is mounted on the upper surface (the surface on the +Z side) of the substrate 1. The light source 2 emits light from the light emitting surface 21 included in each of the nine light emitting portions 20 in the direction where the first lens 41 is located. In addition, the number of light emitting portions 20 included in the light source 2 is not limited to nine, as long as there is at least one.

[0046] The light emitting module 100 can also light up the nine light emitting units 20 individually or in groups. The light emitting module 100 can improve the contrast of light in the irradiated surface irradiated by the light from the light source 2 by lighting up the nine light emitting units 20 individually or in groups at a desired brightness. In addition, the light emitting module 100 can partially illuminate the irradiated surface by lighting up the nine light emitting units 20 individually or in groups. Here, the so-called partial illumination refers to irradiating light to a part of the irradiated surface.

[0047] In partial illumination, in order to make the light irradiated to a part of the irradiated surface eye-catching, the outer edge of the irradiated light is preferably clear. That is, the illumination difference between the desired area to be irradiated and the area outside the desired area is preferably larger. In other words, it is preferred that there is less stray light around the irradiated light in the desired area to be irradiated on the irradiated surface. In the light-emitting module 100, by reducing the stray light in the irradiated surface, it is possible to irradiate the light to the desired area and reduce the light irradiated to the area outside the desired area. As a result, the illumination difference between the desired area to be irradiated and the area outside the desired area can be increased, making the light irradiating the desired area eye-catching.

[0048] When the light emitting module 100 is used as a light source for a flash when shooting with a camera, the light emitting module 100 can, for example, switch between a wide-angle mode and a narrow-angle mode to irradiate light. The wide-angle mode is an operation mode of the light emitting module 100 in which all the light emitting units 20 emit light. The narrow-angle mode is an operation mode of the light emitting module 100 in which only the light emitting units 20 located near the center of the light emitting area 250 emit light, and the light emitting units 20 located near the outer edge 252 of the light emitting area 250 do not emit light. The narrow-angle mode has a narrower light distribution angle than the wide-angle mode. In the light emitting module 100, by being able to switch the irradiated light corresponding to the wide-angle mode and the narrow-angle mode, for example, the light irradiated from the light emitting module 100 can be used to perform shooting corresponding to shooting modes such as close-up and telephoto shooting by using a camera.

[0049] (Detailed structure)

[0050] exist Figure 1 In the example shown, the substrate 1 is a plate-shaped member that is substantially circular when viewed from above. The substrate 1 has wiring that can mount the light source 2 and various electronic components described later. In addition, the shape of the substrate 1 when viewed from above can be substantially rectangular, substantially elliptical, or substantially polygonal.

[0051] The substrate 1 preferably uses an insulating material as a base material, and preferably uses a material that makes it difficult for light emitted from the light-emitting unit 20, external light, etc. to pass through. In addition, it is preferable to use a material having a certain strength for the substrate 1. Specifically, the substrate 1 can be composed of a resin such as alumina, aluminum nitride, mullite, silicon nitride, etc., phenolic resin, epoxy resin, polyimide resin, BT resin (bismaleimide triazine resin), polyphthalamide, polyester resin, etc. as a base material.

[0052] For light source 2, see Figure 3 as well as Figure 4 To describe in detail.

[0053] The electronic component 3 includes at least one of a Zener diode, a thermistor, a capacitor, an external light sensor, etc. Figure 1 as well as Figure 2A In the example shown, the electronic component 3 is an external light sensor.

[0054] The first light-transmitting member 4 is a member that transmits the light L from the light source 2. The first light-transmitting member 4 is arranged to cover the light source 2 and the electronic component 3. Figure 1 In the example shown, the first light-transmitting member 4 has a substantially circular shape in a plan view, but the shape of the first light-transmitting member 4 in a plan view may be substantially elliptical, substantially rectangular, substantially polygonal, or the like.

[0055] As described above, the first light-transmitting member 4 includes the first lens 41 and the first support portion 42. The first light-transmitting member 4 is formed by including at least one of a resin material such as polycarbonate resin, acrylic resin, silicone resin, epoxy resin, or a glass material that is light-transmitting to the light L emitted from the light source 2. Figure 1 , Figure 2A as well as Figure 2B In the example shown, the first lens 41 and the first support portion 42 are integral members without using an adhesive member. However, the first lens 41 and the first support portion 42 may be separate members joined by an adhesive member.

[0056] exist Figure 1 , Figure 2A as well as Figure 2B In the example shown, the first lens 41 is a biconvex lens. The first lens 41 forms a biconvex single lens through a first convex surface 411 and a second convex surface 412. However, the first lens 41 is not limited to a biconvex single lens, and may also be a plano-convex single lens, a biconcave single lens, a plano-concave single lens, a Fresnel lens, an array lens, a meniscus single lens, an aspherical lens, a cylindrical lens, or other forms.

[0057] exist Figure 2A In the example shown, the farther away the surface (first convex surface 411) of the first lens 41 from the optical axis 41c of the first lens 41 is, the longer the distance between the first convex surface 411 and the light source 2 is. The distance between the first convex surface 411 and the light source 2 is along the direction of the optical axis 41c of the first lens 41 (in Figure 2A The first convex surface 411 has a distance from the light source 2 that is longer as it is farther from the optical axis 41c of the first lens 41, so that the light L emitted from the light source 2 is incident on the first convex surface 411 and becomes close to parallel light, and then is emitted from the second convex surface 412. As a result, the light distribution of the light emitted from the light emitting module 100 can be controlled mainly by the shape of the second convex surface 412, so that the light distribution of the light emitted from the light emitting module 100 can be easily controlled.

[0058] exist Figure 2A In the example shown, the light L from the light source 2 is temporarily focused at the focal point F that overlaps with the center 2c of the light-emitting area 250 when viewed from above through the first convex surface 411 and the second convex surface 412, and then irradiates the irradiation surface as divergent light. The focal point F of the first lens 41 including a convex lens is located on the +Z side of the first lens 41, and the light L from each of the plurality of light-emitting units 20 is focused at the focal point F and then dispersed. Thus, for example, when the light-emitting module 100 is mounted on a smartphone or the like, it is possible to reduce the situation where the light L irradiated from the light-emitting module 100 is blocked by the housing of the smartphone or the like. As a result, the light L from the light source 2 can be efficiently irradiated through the first lens 41.

[0059] exist Figure 1 In the example shown, the shape of the first lens 41 when viewed from above is roughly circular. However, the shape of the first lens 41 when viewed from above may be roughly rectangular, roughly elliptical, or roughly polygonal, etc. In addition, the shape of the first lens 41 when viewed from above may be a rotationally symmetrical shape. Considering that the shooting range of a general camera device is roughly rectangular, the shape of the first lens 41 when viewed from above is preferably a four-fold rotationally symmetrical shape or a two-fold rotationally symmetrical shape. In the first lens 41, the size of the radius of curvature of the first convex surface 411 and the second convex surface 412, the size relationship of the respective radius of curvature, the thickness of the lens, etc. can also be appropriately changed.

[0060] The first support portion 42 also supports the first lens 41 so that the first lens 41 is disposed above the light source 2. Figure 2A In the example shown, the first support portion 42 includes an upper portion 421 and a first barrel portion 422. The upper portion 421 is a portion that supports the first lens 41 from the outside when viewed from above. The upper portion 421 includes an upper surface 423 and a lower surface 424 that are substantially parallel to the light emitting surface 21 of the light source 2. On the other hand, the first barrel portion 422 is a circular ring-shaped portion that is arranged outside the light source 2 and the electronic component 3 when viewed from above. The first barrel portion 422 is arranged to extend downward outside the light source 2 and the electronic component 3. In the present embodiment, the first support portion 42 includes the first barrel portion 422, but the inner side surface or the outer side surface of the first barrel portion is not limited to a plane, and may also have a curved surface. In addition, the upper surface 423 and the lower surface 424 of the upper portion 421 may also be inclined in a manner close to the light source 2 as they move away from the optical axis 41c of the first lens 41. The upper portion 421 and the first barrel portion 422 are continuous. The upper portion 421 and the first barrel portion 422 are integral components that do not use adhesive components. However, the upper portion 421 and the first tube portion 422 may be separate members joined by an adhesive member. The first light-transmitting member 4 is disposed on the upper surface of the substrate 1 via the first tube portion 422 of the first support portion 42 via the adhesive member 11 or the like.

[0061] In the light emitting module 100, the first support portion 42 may include an annular protrusion 425 disposed on at least one of the upper surface 423 and the lower surface 424 of the first support portion 42. Figure 2A In the example shown, the first support portion 42 includes three annular protrusions 425 on the upper surface 423 of the upper portion 421. The three annular protrusions 425 are portions of the upper surface 423 that protrude toward the side opposite to the side where the light source 2 is located (e.g., the +Z side). The three annular protrusions 425 are arranged in concentric circles centered on the optical axis 41c of the first lens 41. The three concentric annular protrusions 425 have a sawtooth or wavy shape. The three annular protrusions 425 can be, for example, Fresnel shapes.

[0062] The number of the annular protrusions 425 is not limited to three and can be changed appropriately. For example, the light diffusivity of the first support portion 42 can be adjusted by increasing the number of the annular protrusions 425 to improve the light diffusivity, or reducing the number of the annular protrusions 425 to reduce the light diffusivity. In addition, in the case where the protrusion 425 has an inclined surface relative to the optical axis 41c of the first lens 41, the angle of the slope of the inclined surface can also be adjusted. Here, the so-called inclined surface refers to a surface that includes a plane or a curved surface having an inclination angle relative to the optical axis 41c in a cross-section of the first light-transmitting member 4 along the optical axis 41c of the first lens 41.

[0063] The first support portion 42 includes an annular convex portion 425, thereby improving light diffusivity compared to the first lens 41. In addition, the annular convex portion 425 can be easily formed by molding or the like. Therefore, in the light emitting module 100, the light diffusivity brought by the annular convex portion 425 can be easily given to the first support portion 42. In addition, the annular convex portion 425 is preferably symmetrical when viewed from above. As a result, compared with the case where the first support portion 42 includes a convex portion that is not symmetrical when viewed from above, the irregularity of the appearance can be reduced, and the aesthetic appearance of the light emitting module 100 can be improved.

[0064] Next, refer to Figure 3 as well as Figure 4 , the structure of the light source 2 included in the light emitting module 100 will be described. Figure 3 It is a schematic plan view showing an example of the light source 2 . Figure 4 yes Figure 3 Schematic cross-sectional view along line IV-IV in FIG.

[0065] exist Figure 3 In the example shown, the light source 2 has nine light-emitting sections 20, each of which includes a light-emitting surface 21. The nine light-emitting sections 20 emit light from the light-emitting surface 21 to the first lens 41 disposed above the light source 2. The light-emitting surface 21 refers to the main light extraction surface in the light-emitting section 20. The light emitted from the light-emitting section 20 is preferably white light, but may also be light having a specific wavelength such as blue. The wavelength or chromaticity of the light emitted from the light-emitting section 20 may be appropriately selected according to the intended use of the light-emitting module 100.

[0066] exist Figure 3 In the example shown, the light source 2 has nine light emitting units 20, namely, light emitting units 20-1, 20-2, 20-3, 20-4, 20-5, 20-6, 20-7, 20-8 and 20-9. The nine light emitting units 20 are arranged in a longitudinal direction, a transverse direction or a matrix when viewed from above. In another viewpoint, the nine light emitting units 20 are arranged along the X direction, or along the X direction and the Y direction orthogonal to the X direction. Figure 3In the example shown, nine light emitting units 20 are arranged along the X direction and the Y direction, respectively.

[0067] The light-emitting unit 20-1 includes a light-emitting surface 21-1, the light-emitting unit 20-2 includes a light-emitting surface 21-2, the light-emitting unit 20-3 includes a light-emitting surface 21-3, the light-emitting unit 20-4 includes a light-emitting surface 21-4, and the light-emitting unit 20-5 includes a light-emitting surface 21-5. In addition, the light-emitting unit 20-6 includes a light-emitting surface 21-6, the light-emitting unit 20-7 includes a light-emitting surface 21-7, the light-emitting unit 20-8 includes a light-emitting surface 21-8, and the light-emitting unit 20-9 includes a light-emitting surface 21-9. More than 80% of the nine light-emitting surfaces 21-1 to 21-9 are preferably arranged on the inner side of the first lens 41 (closer to the inside of the outer shape of the first lens 41) when viewed from above. Thereby, the first lens 41 can be miniaturized and good optical characteristics can be obtained. In addition, since the light-emitting unit 20 overlaps with the light-emitting surface 21 when viewed from above, Figure 3 In the example shown, the reference numerals of the light emitting unit 20 and the reference numerals of the light emitting surface 21 are collectively described. In the following, when two or more elements are substantially identical or overlapped, the reference numerals may be collectively described.

[0068] The first width Wx indicates the width along the X direction of the light emitting surface 21. The second width Wy indicates the width along the Y direction of the light emitting surface 21. The first width Wx and the second width Wy are, for example, not less than 30 μm and not more than 2000 μm, preferably not less than 100 μm and not more than 1000 μm. The first width Wx and the second width Wy may be substantially equal, but may also be different. Figure 3 In the example shown, the light emitting surfaces 21 of adjacent light emitting units 20 are arranged at a given interval from each other when viewed from above. The first light emitting surface interval dx in the X direction and the second light emitting surface interval dy in the Y direction correspond to the given intervals, respectively. From the perspective of the light emitting characteristics of the light source 2, the narrower the first light emitting surface interval dx and the second light emitting surface interval dy, the more preferably. However, there is a limit to the interval at which a plurality of light emitting units 20 can be mounted to each other. In order to simultaneously achieve good light emitting characteristics and an interval at which a plurality of light emitting units 20 can be mounted to each other, the first light emitting surface interval dx and the second light emitting surface interval dy are preferably both greater than 10 μm and less than 50 μm. Figure 3 In the example shown, the shape of the light emitting surface 21 - 1 when viewed from above is a substantially rectangular shape, but the shape of the light emitting surface 21 when viewed from above may be a substantially circular shape, a substantially elliptical shape, or a substantially triangular shape, a substantially hexagonal shape, or other polygonal shape.

[0069] The light emitting unit 20 includes a light emitting element 22 , a wavelength conversion member 24 disposed on the light emitting element 22 , and a covering member 25 covering the side surfaces of the light emitting element 22 and the side surfaces of the wavelength conversion member 24 .

[0070] The light emitting section 20 is provided with the light emitting element 22 and the wavelength conversion member 24, so that it is possible to output mixed color light of the color of the light emitted from the light emitting element 22 and the color of the light emitted from the wavelength conversion member 24. In the light emitting section 20, the combination of the light emitting element 22 and the wavelength conversion member 24 can increase the degree of freedom of the color of the light emitted from the light emitting section 20. In addition, in the light emitting section 20, by providing the covering member 25, it is possible to reduce the light leaking from the light emitting section 20 and the covering member 25, and it is possible to improve the light extraction efficiency of the light emitting section 20.

[0071] In addition, the light source 2 has a plurality of light emitting units 20, and the covering member 25 holds the plurality of light emitting elements 22 and the plurality of wavelength conversion members 24 as a whole. Figure 4 In the example shown, the covering member 25 is arranged between adjacent light emitting elements 22 and between adjacent wavelength conversion members 24, thereby holding the nine light emitting elements 22 of the nine light emitting units 20 and the nine wavelength conversion members 24 of the nine light emitting units 20 as a whole.

[0072] The light source 2 can increase the amount of light emitted from the light source 2 by including the plurality of light emitting units 20. Furthermore, the plurality of light emitting elements 22 and the plurality of wavelength conversion members 24 are integrally held by the covering member 25, so that the light source 2 can be easily mounted.

[0073] The light source 2 will be described in more detail. Figure 4 In the example shown, the light-emitting portion 20-1 is arranged on the surface on the +Z side of the substrate 1, with the upper surface as the light-emitting surface 21-1 and the surface opposite to the light-emitting surface 21-1 as the mounting surface. The wavelength conversion member 24 is provided on the surface on the +Z side of the light-emitting element 22. In addition to the upper surface of the wavelength conversion member 24, the covering member 25 covers the side surfaces of the light-emitting element 22 and the side surfaces of the wavelength conversion member 24. Among the 9 light-emitting portions 20 included in the light source 2, the light-emitting surfaces 21 of adjacent light-emitting portions 20 are separated by the covering member 25. Adjacent light-emitting surfaces 21 may also be continuous with each other. For example, it may also be configured so that one wavelength conversion member 24 covers all the upper surfaces of a plurality of light-emitting elements 22. In this case, the first light-emitting surface interval dx and the second light-emitting surface interval dy are 0.

[0074] The light emitting element 22 has at least a pair of positive and negative electrodes 23 on the surface opposite to the light emitting surface 21 - 1 (ie, the lower surface).

[0075] The light emitting element 22 includes various semiconductors such as a III-V compound semiconductor and a II-VI compound semiconductor. As the semiconductor, In is preferably used. X Al Y Ga 1-X-YThe light emitting element 22 may be a nitride semiconductor such as N (0≤X, 0≤Y, X+Y≤1), or InN, AlN, GaN, InGaN, AlGaN, InGaAlN, etc. The light emitting element 22 is, for example, an LED or an LD (Laser Diode). From the viewpoint of luminous efficiency and excitation of the wavelength conversion material, the peak wavelength of light emission of the light emitting element 22 is preferably 400 nm to 530 nm, more preferably 420 nm to 490 nm, and even more preferably 450 nm to 475 nm.

[0076] The wavelength conversion member 24 is a member that is, for example, roughly rectangular when viewed from above. The wavelength conversion member 24 is provided to cover the upper surface of the light emitting element 22. The wavelength conversion member 24 contains a wavelength conversion substance that converts the wavelength of at least a portion of the light from the light emitting element 22. The wavelength conversion member 24 can be formed using a light-transmitting resin material, ceramic, glass or other inorganic material. As the resin material, a thermosetting resin such as silicone resin, silicone modified resin, epoxy resin, epoxy modified resin, phenolic resin or the like can be used. Silicone resin or its modified resin with excellent light resistance and heat resistance is particularly preferred. In addition, the light transmittance here is preferably a property that allows more than 60% of the light from the light emitting element 22 to be transmitted. In addition, the wavelength conversion member 24 can use a thermoplastic resin such as polycarbonate resin, acrylic resin, methylpentene resin, polynorbornene resin or the like. Furthermore, the wavelength conversion member 24 can also contain a light diffusing substance in the above resin. For example, the wavelength conversion member 24 can also be a material containing a wavelength conversion substance such as a resin material, ceramic, glass, or the like, a sintered body of a wavelength conversion substance, or the like. Alternatively, the wavelength conversion member 24 may be a multi-layered member in which resin layers are arranged on the ±Z side surfaces of a molded body of resin, ceramic, glass, or the like.

[0077] As the wavelength conversion material contained in the wavelength conversion member 24, for example, yttrium aluminum garnet phosphor (for example, (Y, Gd) 3 (Al, Ga) 5 O 12 :Ce), lutetium·aluminum·garnet phosphors (such as Lu3(Al,Ga)5O 12 :Ce), terbium·aluminum·garnet phosphors (such as Tb3(Al,Ga)5O 12 :Ce), CCA phosphors (such as Ca10(PO4)6Cl2:Eu), SAE phosphors (such as Sr4Al 14 O 25 :Eu), chlorosilicate phosphors (such as Ca8MgSi4O 16Cl2:Eu), silicate-based phosphors (e.g., (Ba,Sr,Ca,Mg)2SiO4:Eu), β-sialon ceramic-based phosphors (e.g., (Si,Al)3(O,N)4:Eu), or α-sialon ceramic-based phosphors (e.g., Ca(Si,Al) 12 (O,N) 16 :Eu), etc., nitride-based phosphors such as LSN-based phosphors (e.g., (La,Y)3Si6N 11 :Ce), BSESN-based phosphors (e.g., (Ba,Sr)2Si5N8:Eu), SLA-based phosphors (e.g., SrLiAl3N4:Eu), CASN-based phosphors (e.g., CaAlSiN3:Eu), or SCASN-based phosphors (e.g., (Sr,Ca)AlSiN3:Eu), etc., nitride-based phosphors, KSF-based phosphors (e.g., K2SiF6:Mn), KSAF-based phosphors (e.g., K2(Si 1- x Al x )F 6-x :Mn, where x satisfies 0 < x < 1.), or fluoride-based phosphors such as MGF-based phosphors (e.g., 3.5MgO·0.5MgF2·GeO2:Mn), quantum dots with a perovskite structure (e.g., (Cs,FA,MA)(Pb,Sn)(F,Cl,Br,I)3, where FA and MA represent formamidinium and methylammonium, respectively.), II-VI group quantum dots (e.g., CdSe), III-V group quantum dots (e.g., InP), or quantum dots with a chalcopyrite structure (e.g., (Ag,Cu)(In,Ga)(S,Se)2), etc. The above wavelength conversion materials are particles. In addition, one of these wavelength conversion materials can be used in monomer form, or two or more of these wavelength conversion materials can be used in combination.

[0078] In the light source 2, a blue LED is used as the light-emitting element 22, and the wavelength conversion member 24 includes a wavelength conversion material that converts the light emitted from the light-emitting element 22 into yellow, thereby emitting white light. As the light diffusing material included in the wavelength conversion member 24, for example, titanium oxide, barium titanate, alumina, silica, etc. can be used.

[0079] The covering member 25 is a member covering the side surfaces of the light emitting element 22 and the wavelength conversion member 24. The covering member 25 directly or indirectly covers the side surfaces of the light emitting element 22 and the wavelength conversion member 24. The upper surface of the wavelength conversion member 24 is exposed from the covering member 25 and is the light emitting surface 21-1 of the light emitting portion 20-1. The covering member 25 may also be spaced apart from adjacent light emitting portions among the 9 light emitting portions 20. In order to improve the light extraction efficiency, the covering member 25 is preferably composed of a member with high light reflectivity. For example, the covering member 25 can use an organic material such as a resin containing a light reflective substance such as a white pigment. In addition, the covering member 25 may also be a light reflective member composed of an inorganic material containing boron nitride or an alkali metal silicate. In this case, titanium oxide or zirconium oxide may also be included.

[0080] As the light reflective material, titanium oxide, zinc oxide, magnesium oxide, magnesium carbonate, magnesium hydroxide, calcium carbonate, calcium hydroxide, calcium silicate, magnesium silicate, barium titanate, barium sulfate, aluminum hydroxide, aluminum oxide, zirconium oxide, silicon oxide, etc. can be cited, preferably one of these alone or two or more of these are used in combination. In addition, as the resin material, it is preferred that a resin material with a thermosetting resin such as epoxy resin, epoxy modified resin, silicone resin, silicone modified resin, phenolic resin as the main component is used as the matrix. In addition, the covering member 25 can also be composed of a member that is translucent or absorptive to visible light as required.

[0081] The light-emitting portion 20 is electrically connected to the wiring 12 provided on the substrate 1. The substrate 1 preferably has the wiring 12 arranged on the surface. The substrate 1 may also have the wiring 12 inside. The light-emitting portion 20 and the substrate 1 are electrically connected by connecting the wiring 12 of the substrate 1 to at least a positive and negative pair of electrodes 23 of the light-emitting portion 20 via the conductive member 13. In addition, the structure and size of the wiring 12 of the substrate 1 are set according to the structure and size of the electrode 23 of the light-emitting portion 20.

[0082] The wiring 12 can be composed of at least one of copper, iron, nickel, tungsten, chromium, aluminum, silver, gold, titanium, palladium, rhodium, or alloys thereof. In addition, from the viewpoint of wettability and light reflectivity of the conductive member 13, a layer of silver, platinum, aluminum, rhodium, gold, or alloys thereof may be provided on the surface of the wiring 12.

[0083] <Modification of First Embodiment>

[0084] The following describes a modification of the light emitting module according to the first embodiment. In addition, the same names and symbols as those in the already described embodiment represent the same or homogeneous components or structures, and detailed descriptions thereof are appropriately omitted. This also applies to the modifications and embodiments described later.

[0085] (First Modification of the First Embodiment)

[0086] Figure 5 1 is a schematic cross-sectional view showing a light emitting module 100a according to a first modification of the first embodiment. Figure 1 The top views of the light emitting modules 100 shown are substantially the same. Figure 5 Schematically shows Figure 1 The cross section of the light emitting module 100 a corresponds to the line IIA-IIA in FIG.

[0087] The main difference between this modification and the first embodiment is that, at the interface 410 between the first lens 41 and the first support portion 42, a first engaging portion 413 is provided on the first lens 41, and a second engaging portion 426 is provided on the first support portion 42 to fit with the first engaging portion 413. In this modification, the so-called fitting means that the shape of the first engaging portion 413 and the shape of the second engaging portion 426 fit closely.

[0088] The first joint portion 413 includes at least one of a concave portion and a convex portion. The second joint portion 426 includes at least one of a concave portion and a convex portion. Figure 5 In the example shown, the first engaging portion 413 includes a convex portion that intersects the optical axis 41c and protrudes in a direction away from the optical axis 41c. The convex portion of the first engaging portion 413 may also protrude in a direction substantially orthogonal to the optical axis 41c. Figure 5 In the example shown, the second joint part 426 includes a concave portion that intersects with the optical axis 41c and is concave in a direction away from the optical axis 41c. The concave portion of the second joint part 426 may also be concave in a direction substantially orthogonal to the optical axis 41c. In addition, the first joint part 413 may also include one or more concave portions, one or more convex portions, or one or more concave portions and one or more convex portions, or a rough surface. The second joint part 426 may also include one or more concave portions, one or more convex portions, or one or more concave portions and one or more convex portions in a manner that fits with the shape of the first joint part 413, or a rough surface. As long as the first joint part 413 and the second joint part 426 can fit with each other, the shape of the first joint part 413 and the shape of the second joint part 426 can be appropriately changed. If the first joint part 413 has a convex portion that intersects with the optical axis 41c and protrudes in a direction close to the optical axis 41c, the light emitted from the light source 2 may collide with the convex portion when passing through the first lens 41. Therefore, it is preferable that the first engaging portion 413 has a convex portion that intersects the optical axis 41 c and protrudes in a direction away from the optical axis 41 c because the light emitted from the light source 2 is not blocked by the second engaging portion 426 of the first supporting portion 42 .

[0089] In the light emitting module 100a, by making the first joint part 413 and the second joint part 426 respectively have a convex part and a concave part that fit together, the contact area between the first lens 41 and the first support part 42 can be increased at the interface 410 between the first lens 41 and the first support part 42. As a result, the adhesion strength between the first lens 41 and the first support part 42 manufactured by the two-color molding and construction method can be improved, and the mechanical strength of the first light-transmitting member 4 can be improved.

[0090] (Second Modification of First Embodiment)

[0091] Figure 6 1 is a schematic cross-sectional view showing a light emitting module 100b according to a second modified example of the first embodiment. Figure 1 The top views of the light emitting modules 100 shown are substantially the same. Figure 6 Schematically shows Figure 1 The cross section of the light emitting module 100 b corresponds to the line IIA-IIA in FIG.

[0092] The main difference between this modification and the first embodiment is that the first support portion 42 includes a light diffusion material 43 disposed on at least one of the upper surface 423 and the lower surface 424 of the first support portion 42 .

[0093] exist Figure 6 In the example shown, the first support portion 42 includes light diffusing substances 43 disposed on the upper surface 423 and the lower surface 424 of the upper portion 421. In addition, the first support portion 42 includes light diffusing substances 43 disposed on the outer side surface 427 and the inner side surface 428 of the first tube portion 422. In addition, the first support portion 42 does not contain the light diffusing substance 43 inside.

[0094] The configuration of the light diffusion material 43 on the upper surface 423 and the lower surface 424 can be easily performed by coating the light diffusion material 43. Therefore, in this modification, by configuring the light diffusion material 43 on both the upper surface 423 and the lower surface 424, it is possible to easily impart light diffusion properties to the first support portion 42, and it is possible to provide a light emitting module 100b that can be easily assembled. The effects other than the above in this modification are the same as those of the first embodiment. In addition, in this modification, the first support portion 42 only needs to include the light diffusion material 43 configured on at least one of the upper surface 423 and the lower surface 424, and does not need to include the light diffusion material 43 configured on the outer side surface 427 and the inner side surface 428. In addition, the first support portion 42 may also contain the light diffusion material 43 inside. In addition, from the perspective of making it difficult to visually confirm the electronic component 3 inside the light emitting module 100b, it is preferred that the light diffusion material 43 is configured on the upper surface 423 located at a position farther from the inside of the light emitting module 100b than the lower surface 424. Among the light entering the light emitting module 100b from the outside, the light scattered by the light diffusing material 43 and passing through the first supporting portion 42 is scattered more as it moves away from the light diffusing material 43. Therefore, the farther the distance between the light diffusing material 43 and the electronic component 3 is, the more scattered light will illuminate the electronic component 3, making it difficult to visually confirm the electronic component 3.

[0095] [Second embodiment]

[0096] Next, refer to Figure 7 as well as Figure 8 A light emitting module according to a second embodiment will be described. Figure 7 It is a schematic plan view showing an example of a light emitting module 100c according to the second embodiment. Figure 8 yes Figure 7 Schematic cross-sectional view along line VIII-VIII in FIG.

[0097] like Figure 7 as well as Figure 8 As shown, the main difference between this embodiment and the first embodiment is that the light emitting module 100c has a second light-transmitting member 5, and the second light-transmitting member 5 includes a second lens 51 and a second supporting portion 52 that supports the second lens 51. The second lens 51 overlaps with the first lens 41 when viewed from above. The first supporting portion 42 overlaps with the substrate 1 when viewed from above. At least a portion of the second supporting portion 52 is located outside the substrate 1 when viewed from above. The light diffusibility of the second supporting portion 52 is higher than that of the first lens 41.

[0098] The second light-transmitting member 5 is arranged to cover the first light-transmitting member 4. Figure 7In the example shown, the second light-transmitting member 5 has a substantially circular shape in a plan view, but the shape of the second light-transmitting member 5 in a plan view may be substantially elliptical, substantially rectangular, substantially polygonal, or the like.

[0099] exist Figure 8 In the example shown, the second light-transmitting member 5 includes a second lens 51, a second support portion 52, and a second barrel portion 53. The second light-transmitting member 5 is configured to include at least one of a resin material such as polycarbonate resin, acrylic resin, silicone resin, epoxy resin, or a glass material that is light-transmitting to the light emitted from the light source 2. The light-transmitting property of the second lens 51 is preferably a property that has a light transmittance of 60% or more for light incident on the second lens 51 from the outside.

[0100] exist Figure 7 as well as Figure 8 In the example shown, the second lens 51, the second support portion 52 and the second barrel portion 53 are an integral member without using an adhesive member. From another point of view, the second lens 51 is connected to the second support portion 52 via the second barrel portion 53. However, the second lens 51, the second support portion 52 and the second barrel portion 53 may also be separate members joined by an adhesive member. In addition, the second light-transmitting member 5 does not necessarily have to have the second barrel portion 53, and the second lens 51 and the second support portion 52 may also be directly connected without passing through the second barrel portion 53.

[0101] The second lens 51 transmits the light emitted from the light source 2 and transmitted through the first lens 41. Figure 8 In the example shown, the second lens 51 has a concentric convex portion 512 on the lower surface 511 with the optical axis 51c of the second lens 51 as the center. The optical axis 51c of the second lens 51 overlaps with the optical axis 41c of the first lens 41 when viewed from above. The convex portion 512 may also be a Fresnel lens having a Fresnel shape. The second lens 51 is not limited to a Fresnel lens, and may also be other forms such as a biconvex single lens, a plano-convex single lens, a biconcave single lens, a plano-concave single lens, an array lens, a meniscus single lens, an aspherical lens, a cylindrical lens, etc., which are supported from the outside by the second barrel 53 or the second support portion 52.

[0102] In the light emitting module 100c, by including the second lens 51, light distribution control can be performed by combining the first lens 41 and the second lens 51. Therefore, in the light emitting module 100c, the degree of freedom of light distribution control can be improved compared with the case where only the first lens 41 is included.

[0103] In a plan view, the second tube portion 53 is a circular ring-shaped portion provided outside the first light-transmitting member 4. The second tube portion 53 is provided outside the first light-transmitting member 4 so as to extend downward.

[0104] The second support portion 52 supports the second lens 51 in such a manner that the second lens 51 is arranged above the first lens 41. The second support portion 52 is a circular ring-shaped portion provided on the outer side of the substrate 1 when viewed from above. The second support portion 52 is provided to extend downward on the outer side of the substrate 1. The second support portion 52 is configured so that a portion of the inner side surface is opposite to the outer side surface of the substrate 1, and a portion of the inner side surface and the outer side surface of the substrate 1 are bonded by the adhesive member 14. The second light-transmitting member 5 is bonded to the substrate 1 through the second support portion 52.

[0105] exist Figure 7 as well as Figure 8 In the example shown, the second support portion 52 contains the light diffusing material 43 inside. In the light emitting module 100c, the second support portion 52 contains the light diffusing material 43 inside, so that the light diffusing property can be easily given to the second support portion 52. However, the second support portion 52 may be provided with the light diffusing material 43 on at least one of the outer side surface and the inner side surface of the second support portion 52. The light diffusing property of the second support portion 52 is higher than the light diffusing property of the first lens 41. In addition, the light diffusing property of the second support portion 52 is higher than the light diffusing property of the first lens 41, for example, the haze value of the second support portion 52 is higher than the haze value of the first lens 41. The haze value of the second support portion 52 is greater than 10% and less than 90%. The haze value of the first lens 41 is less than 10%, preferably less than 5%. In addition, the light diffusing property of the second support portion 52 is higher than the light diffusing property of the second lens 51. The light diffusing property of the second support portion 52 is higher than the light diffusing property of the second lens 51, for example, the haze value of the second support portion 52 is higher than the haze value of the second lens 51. The haze value of the second support portion 52 is greater than 10% and less than 90%. The haze value of the second lens 51 is less than 10%, preferably less than 5%. At least one of the first lens 41 and the second lens 51 may also be configured to include a resin containing a light diffusing substance 43. In this case, the content of the light diffusing substance 43 in the first lens 41 and the second lens 51 is less than the content of the light diffusing substance 43 in the second support portion 52. In addition, in the present embodiment, the light transmittance of the second support portion 52 is lower than the light transmittance of the first support portion 42. In addition, the haze value of the second support portion 52 is higher than the haze value of the first support portion 42.

[0106] In the light emitting module 100c, when viewed from above, there is a substrate 1 below the first support portion 42, so it is difficult to visually confirm the components or parts arranged below the substrate 1 (-Z side). On the other hand, since there is a portion below the second support portion 52 where the substrate 1 does not exist, the components or parts contained in the housing of the smart phone and arranged below the second support portion 52 are visually confirmed from the outside through the second barrel 53, which may cause the aesthetic appearance of the light emitting module to be impaired. In the light emitting module 100c, the second support portion 52 has light diffusivity and the light diffusivity of the second support portion 52 is set higher than the light diffusivity of the first lens 41, so that it is difficult to visually confirm the components or parts arranged below the second support portion 52 when viewed from above. As a result, the aesthetic appearance of the light emitting module 100c can be improved. In addition, the light diffusivity of the second support portion 52 can be equal to the light diffusivity of the first support portion 42, or it can be higher than the light diffusivity of the first support portion 42.

[0107] In addition, Figure 7 as well as Figure 8 In the example shown, the second lens 51, the second barrel 53, and the second support 52 constitute a molded body directly bonded at the interface between the second barrel 53 and the second support 52. More specifically, the second lens 51 and the second barrel 53 are formed to contain a resin having light transmittance. The second support 52 is formed to contain a resin having light transmittance and containing a light diffusing substance 43. In the second support 52, the resin that becomes the base material containing the light diffusing substance 43 may be the same as or different from the resin constituting the second lens 51 and the second barrel 53. The second lens 51, the second barrel 53, and the second support 52 that constitute the molded body directly bonded at the interface between the second barrel 53 and the second support 52 can be manufactured, for example, by two-color molding. In the light emitting module 100c, by using the second lens 51, the second barrel 53, and the second support 52 that constitute the molded body directly bonded at the interface between the second barrel 53 and the second support 52, the light emitting module 100c can be easily assembled. In addition, when the second light-transmitting member 5 does not include the second barrel portion 53 , the second lens 51 and the second support portion 52 can constitute a molded body directly bonded at their respective interfaces.

[0108] In addition, Figure 8In the example shown, the first support portion 42 includes three annular protrusions 425 on the lower surface 424 of the upper portion 421. The three annular protrusions 425 are portions that protrude from the lower surface 424 toward the side (e.g., the -Z side) where the light source 2 is located. The three annular protrusions 425 are arranged in concentric circles centered on the optical axis 41c of the first lens 41. The three annular protrusions 425 can be Fresnel shapes. The effect brought about by the first support portion 42 including the three annular protrusions 425 on the lower surface 424 of the upper portion 421 is the same as the effect brought about by the first support portion 42 including the three annular protrusions 425 on the upper surface 423 of the upper portion 421 described in the first embodiment.

[0109] [Third Embodiment]

[0110] Next, a smartphone according to a third embodiment will be described.

[0111] <Configuration Example of Smartphone According to Third Embodiment>

[0112] Fig. 9 It is a schematic rear view showing an example of a smartphone 1000 according to the third embodiment.

[0113] As an example, the light emitting module 100d is included in a smartphone. The light emitting module 100d mounted in the smartphone is used as a flash light source when taking a picture using a camera provided in the smartphone.

[0114] exist Fig. 9 In the example shown, the smartphone 1000 includes a light emitting module 100d, a camera 200, and a housing 300. The camera 200 includes a camera 200-1 and a camera 200-2. In addition, the camera includes a camera for taking still images, a camera for taking moving images, and the like. The light emitting module 100d and the camera 200 are configured so that a portion is exposed on the back side of the smartphone 1000. The back side of the smartphone 1000 is the side opposite to the front side where a display unit composed of an organic EL (ElectroLuminescence) or a liquid crystal panel is configured.

[0115] The light emitted from the light emitting module 100d is used to illuminate the subject when the camera 200-1 and the camera 200-2 each take pictures. In addition, the smart phone 1000 is not limited to the light emitting module 100d, and may also have at least one of the light emitting module 100, the light emitting module 100a, the light emitting module 100b, the light emitting module 100c, and the light emitting module 100d.

[0116] In the smart phone 1000, since at least one of the light emitting module 100a, the light emitting module 100b, the light emitting module 100c, and the light emitting module 100d is a flash light source, a light emitting module for a flash can be easily assembled. In addition, in the present embodiment, since the smart phone 1000 has at least one of the light emitting module 100, the light emitting module 100a, the light emitting module 100b, the light emitting module 100c, and the light emitting module 100d, the smart phone 1000 having the light emitting module can be easily assembled.

[0117] The camera device 200 includes a camera for shooting still images, a camera for shooting moving images, etc. The specifications of the camera device 200-1 and the camera device 200-2 may be the same or different from each other. For example, the camera device 200-1 and the camera device 200-2 may have different specifications such as shooting resolution or shooting field angle. In addition, the camera device 200 may include more than one camera device. The configuration of the camera device 200 and the light emitting module 100d may also be appropriately changed according to the specifications required by the smart phone 1000.

[0118] The housing 300 is a box-shaped member that accommodates the light emitting module 100d, the camera device 200, and their control substrates, etc. The housing 300 can be made of a resin material or a metal material, etc. The size and shape of the housing 300 can be appropriately changed according to the specifications required by the smartphone 1000.

[0119] <Configuration Example of Light Emitting Module 100d>

[0120] Fig.10 1 is a schematic cross-sectional view showing an example of the light emitting module 100d. Fig.10 Schematically shows Fig. 9 The cross section of line XX in .

[0121] In the light emitting module 100d, a part of the first support part 42 and a part of the substrate 1 form a recess 45 including an upper surface 451, a side surface 452 and a bottom surface 453. The electronic component 3 is disposed in the recess 45. The recess 45 overlaps with the housing 300 of the smartphone 1000 in a plan view.

[0122] In the light emitting module 100d, when viewed from above, the recess 45 in which the electronic component 3 is arranged overlaps with the housing 300 of the smartphone 1000, thereby making it difficult to visually confirm the electronic component 3 from the outside of the smartphone 1000. As a result, the aesthetic appearance of the smartphone 1000 can be improved. In addition, by arranging the electronic component 3 inside the recess 45 formed by the first support portion 42 with high light diffusivity, it is further difficult to visually confirm the electronic component 3 from the outside of the light emitting module 100d. As a result, the aesthetic appearance of the light emitting module 100d can be improved. In addition, the effects of the light emitting module 100d other than the above are the same as those of the light emitting module 100.

[0123] In the light emitting module 100d, the first lens 41 has a plurality of concentric convex portions on the bottom surface with the optical axis 41c of the first lens 41 as the center, and has a flat surface on the top surface. The first lens 41 may also be a Fresnel lens. Fig.10 In the example shown, the light emitting module 100d includes a third lens 7 below the first lens 41. The first support portion 42 supports the third lens 7 by bonding the third lens 7 to the inner side surface using an adhesive member 44, and supports the first lens 41 by being continuous with the first lens 41 without an adhesive member. In the light emitting module 100d, the first support portion 42 has light diffusivity. Fig.10 In the example shown, the third lens 7 is a biconvex lens having two convex surfaces protruding toward the side (-Z side) where the light source 2 is located and the side (+Z side) opposite to the side where the light source 2 is located. In addition, the so-called "supporting lens" includes the case where the lens is directly supported and fixed in contact with the lens, and the case where the lens is indirectly supported and fixed via a component.

[0124] In the light emitting module 100d, the first lens 41 and a part of the first support part 42 are arranged inside the opening 301 of the housing 300. In the light emitting module 100d, the upper surface of the first lens 41 is exposed from the housing 300. In the light emitting module 100d, the housing 300 is arranged adjacent to the outer side surface of the first support part 42. In this way, since the first support part 42 is adjacent to the inner side surface of the housing 300, it is possible to prevent the housing 300 from being seen through the color of the housing 300 when the housing 300 is observed from the outside of the light emitting module 100d through the inner side surface of the first support part 42, and the aesthetic appearance of the light emitting module 100d is improved.

[0125] In addition, Fig.10In the example shown, the first support portion 42 intersects with the optical axis 41c of the first lens 41 and bends in a direction away from the optical axis 41c, so that the surface of the first support portion 42 facing the upper surface of the substrate 1 constitutes the upper surface 451 of the recess 45. In addition, the inner side surface of the first support portion 42 constitutes the side surface 452 of the recess 45. On the upper surface of the substrate 1, the portion facing the upper surface 451 constitutes the bottom surface 453. When the recess 45 is viewed from above, the side surface 452 of the recess 45 has a circular ring-shaped outer edge shape, so that the light source 2 is arranged on the inside. At this time, the outer edge shape of the upper surface 451 of the recess 45 and the outer edge shape of the bottom surface 453 are also circular rings. Therefore, the upper surface 451 and the bottom surface 453 of the recess 45 are circular rings as a whole when viewed from above. However, the outer edge shape of the side surface 452 of the recess 45 when viewed from above can also match the shape of the light emitting module 100d, and can be a rectangular ring shape other than a circular ring shape.

[0126] The third lens 7 is fixed by a first connecting surface 429 which is continuous with the inner side surface of the first support portion 42 and is annular in a plan view, and the inner side surface of the first support portion 42. The first connecting surface 429 may be a continuous surface or a plurality of surfaces arranged intermittently as long as it can fix the third lens 7.

[0127] In addition, the third lens 7 may be bonded to the first support portion 42 using ultrasound. In the case of ultrasonic bonding, the third lens 7 is fixed at the first connection surface 429. For example, the area where the third lens 7 is bonded to the first support portion 42 is heated by irradiating ultrasound. The third lens 7 and the first support portion 42 are melted by heating, and then cooled and solidified after melting, so that the third lens 7 and the first support portion 42 can be bonded. By bonding the third lens 7 to the first support portion 42 using ultrasound, a bonding process based on the adhesive member 44 is not required, so that the light emitting module 100d can be easily assembled.

[0128] The third lens 7 is not limited to a biconvex lens, and may be a lens including a plurality of concentric convex portions.

[0129] <Modification of the Third Embodiment>

[0130] Hereinafter, a modification of the light emitting module included in the smartphone according to the third embodiment will be described.

[0131] (First Modification of the Third Embodiment)

[0132] Fig.11 It is a schematic cross-sectional view showing a first modified example of the light emitting module included in the smartphone according to the third embodiment. Fig.11 Schematically shows Fig. 9The section corresponding to the XX line in .

[0133] The light emitting module 100e according to the first modification example includes a third support portion 46. The third support portion 46 supports the third lens 7 by bonding the third lens 7 to the inner side surface using the adhesive member 44, and supports the first lens 41 by being continuous with the first lens 41 without an adhesive surface. In addition, the third support portion 46 is continuous with the first support portion 42. The lower surface of the third support portion 46 and a part of the lower surface of the first support portion 42 constitute an upper surface 451 of the recess 45.

[0134] In addition, Fig.11 In the example shown, the light emitting module 100e has an external light sensor 6 disposed separately from the light source 2 and the electronic component 3 on the substrate 1. The electronic component 3 is a Zener diode for protecting the light source 2. The external light sensor 6 is disposed in the recess 45. The external light sensor 6 disposed in the recess 45 overlaps with the housing 300 of the smartphone 1000 in a plan view. In addition, an inclined portion 454 inclined relative to the upper surface 451 is provided on the upper surface 451 of the recess 45 near the external light sensor 6. In addition, as described above, the external light sensor 6 is included in the electronic component 3, but in this embodiment, these components are distinguished for ease of description.

[0135] The external light sensor 6 is used to detect the brightness of the periphery of the light emitting module 100e. The external light sensor 6 can use a PD (Photo Diode) or the like. The external light sensor 6 receives external light incident from the outside of the light emitting module 100e to the inside of the light emitting module 100e, and outputs an electrical signal corresponding to the light intensity of the external light to a control substrate or the like that controls the operation of the light emitting module 100e. The control substrate can control the amount of light emitted from the light emitting module 100e based on the electrical signal input from the external light sensor 6. By using the control substrate, the smart phone 1000 can emit a larger amount of light from the light emitting module 100e when the periphery of the light emitting module 100e is dark, and emit a smaller amount of light from the light emitting module 100e when the periphery of the light emitting module 100e is bright. As a result, the smart phone 1000 can take pictures with an appropriate exposure amount through the camera device 200.

[0136] The third lens 7 is fixed by a second connecting surface 461 which is continuous with the inner side surface of the third support portion 46 and is annular in a plan view. The second connecting surface 461 may be a continuous surface or may include a plurality of surfaces arranged intermittently as long as it can fix the third lens 7. In the case of ultrasonic bonding, the third lens 7 is fixed at the second connecting surface 461.

[0137] The light transmittance of the third support portion 46 is preferably equal to that of the first lens 41. By making the light transmittance of the third support portion 46 equal to that of the first lens 41, light easily passes through the third support portion 46, and thus the amount of external light received by the ambient light sensor 6 increases. As a result, the detection accuracy of the ambient light sensor 6 for external light can be improved.

[0138] The inclined portion 454 refracts external light G that enters the third support portion 46 from the outside of the light emitting module 100f and passes through the inside of the third support portion 46. By refracting the external light G, the inclined portion 454 can guide the external light G to the external light sensor 6 that is arranged at a position overlapping with the housing 300 of the smartphone 1000 in a plan view.

[0139] The external light sensor 6 receives the guided external light G, thereby improving the detection accuracy of the brightness of the external light G. For example, the SN (Signal to Noise Ratio) of the external light G is improved, thereby improving the detection accuracy of the brightness of the external light G. As a result, in the light emitting module 100e, it is possible to make the external light sensor 6 difficult to visually confirm from the outside of the light emitting module 100e, and improve the detection accuracy of the brightness of the external light G by the external light sensor 6.

[0140] Since the housing 300 overlaps with each of the electronic component 3 and the external light sensor 6, it is difficult to visually confirm the electronic component 3 and the external light sensor 6 from the outside of the light emitting module 100e. Therefore, in the light emitting module 100e, the first support portion 42 does not necessarily have to have light diffusivity. In addition, the light transmittance of the first support portion 42 may be equal to or higher than the light transmittance of the first lens 41.

[0141] Effects other than those described above of the light emitting module 100e are the same as those of the light emitting module 100d.

[0142] (Second Modification of the Third Embodiment)

[0143] Fig.12 This is a schematic cross-sectional view showing a second modified example of the light emitting module included in the smartphone according to the third embodiment. Fig.12 Schematically shows Fig. 9 The section corresponding to the XX line in .

[0144] The light emitting module 100 f according to the second modification example is different from the light emitting module 100 e in that it includes a total reflection portion 455 provided on an upper surface 451 of a recessed portion 45 in which the external light sensor 6 is arranged.

[0145] The total reflection portion 455 includes a total reflection surface, which is a portion protruding from the upper surface 451 toward the side where the substrate 1 is located. Fig.12In the illustrated example, the total reflection portion 455 includes three portions protruding from the upper surface 451 toward the substrate 1. However, the number of protruding portions included in the total reflection portion 455 is not limited to three, and can be changed as appropriate.

[0146] The total reflection portion 455 totally reflects the external light G incident from the outside of the light emitting module 100f to the third support portion 46 and transmitted through the inside of the third support portion 46 through the total reflection surface. The total reflection portion 455 totally reflects the external light G through the total reflection surface, thereby being able to guide the external light G to the external light sensor 6 arranged at a position overlapping with the housing 300 of the smart phone 1000 when viewed from above.

[0147] The external light sensor 6 receives the guided external light G, thereby improving the detection accuracy of the brightness of the external light G. For example, the SN ratio of the external light G is improved, thereby improving the detection accuracy of the brightness of the external light G. As a result, in the light emitting module 100f, it is possible to make the external light sensor 6 difficult to visually confirm from the outside of the light emitting module 100f, and improve the detection accuracy of the brightness of the external light G by the external light sensor 6.

[0148] Effects other than those described above of the light emitting module 100f are the same as those of the light emitting module 100d.

[0149] As mentioned above, although the preferred embodiment is described in detail, it is not limited to the above-mentioned embodiment, and various deformation|transformation and substitution can be made to the above-mentioned embodiment without departing from the scope described in the claims.

[0150] The numbers such as serial numbers and quantities used in the description of the embodiments are all illustrative for the purpose of specifically describing the technology of the present invention, and the present invention is not limited to the illustrative numbers. In addition, the connection relationship between the constituent elements is an illustrative for the purpose of specifically describing the technology of the present invention, and the connection relationship for realizing the functions of the present invention is not limited thereto.

[0151] The light emitting module of the present invention can be easily assembled and thus can be suitably used for lighting, camera flashes, vehicle headlights, etc. However, the light emitting module of the present invention is not limited to these uses.

[0152] The embodiments of the present invention are as follows, for example.

[0153] <Item 1> A light-emitting module, comprising: a substrate; a light source arranged on the substrate; an electronic component arranged on the substrate separated from the light source; and a first light-transmitting member, comprising a first lens and a first supporting portion supporting the first lens and having a light-diffusing material, and covering the light source and the electronic component, wherein the light diffusivity of the first supporting portion is higher than that of the first lens, and when viewed from above, the first lens overlaps with the light source, and the first supporting portion overlaps with the electronic component.

[0154] <Item 2> The light emitting module according to <Item 1>, wherein the first support portion has a light diffusing material disposed on at least one of an upper surface and a lower surface of the first support portion.

[0155] <Item 3> The light emitting module according to <Item 1>, wherein the first supporting portion contains the light diffusing substance therein.

[0156] <Item 4> The light emitting module according to <Item 3>, wherein the first lens and the first support portion constitute a molded body directly bonded at respective interfaces.

[0157] <Item 5> The light emitting module according to <Item 4>, wherein the first lens is provided with a first bonding portion at an interface between the first lens and the first supporting portion, and the first supporting portion is provided with a second bonding portion that fits with the first bonding portion.

[0158] <Item 6> The light emitting module according to any one of <Item 1> to <Item 5>, wherein the first support portion overlaps with an outer edge of a light emitting region in the light source in a plan view.

[0159] <Item 7> The light emitting module according to any one of <Item 1> to <Item 6>, wherein the first support portion includes an annular convex portion disposed on at least one of an upper surface and a lower surface of the first support portion.

[0160] <Item 8> The light emitting module according to any one of <Item 1> to <Item 7>, wherein the first lens is a biconvex lens, and the distance between the first lens and the light source is longer as the surface of the first lens facing the light source is farther away from the optical axis of the first lens.

[0161] <Item 9> A light-emitting module according to any one of <Item 1> to <Item 8>, wherein the light-emitting module has a second light-transmitting component, the second light-transmitting component includes a second lens and a second supporting portion supporting the second lens, the second lens overlaps with the first lens when viewed from above, the first supporting portion overlaps with the substrate when viewed from above, at least a portion of the second supporting portion is located outside the substrate when viewed from above, and the light diffusivity of the second supporting portion is higher than the light diffusivity of the first lens.

[0162] <Item 10> A light-emitting module according to any one of <Item 1> to <Item 9>, wherein the light source has at least one light-emitting portion, and the light-emitting portion has: a light-emitting element; a wavelength conversion component, which is arranged on the light-emitting element; and a covering component, which respectively covers the side surfaces of the light-emitting element and the side surfaces of the wavelength conversion component.

[0163] <Item 11> In the light emitting module according to <Item 10>, the light source includes a plurality of light emitting portions, and the covering member integrally holds the plurality of light emitting elements and the plurality of wavelength conversion members.

[0164] <Item 12> The light emitting module according to any one of <Item 1> to <Item 11>, wherein the light emitting module is a flash light source.

[0165] <Item 13> A smart phone comprising the light emitting module according to any one of <Item 1> to <Item 12>.

[0166] <Item 14> The smart phone according to the above-mentioned <Item 13>, wherein the smart phone has a shell, a portion of the first supporting portion and a portion of the substrate constitute a recess including an upper surface, a side surface and a bottom surface, the electronic component is arranged in the recess, and the recess overlaps the shell when viewed from above.

Claims

1. A light emitting module, comprising: substrate; a light source, which is disposed on the substrate; an electronic component disposed on the substrate and spaced apart from the light source; and a first light-transmitting member including a first lens and a first supporting portion having a light diffusing material and supporting the first lens, and covering the light source and the electronic component; The light diffusibility of the first support portion is higher than the light diffusibility of the first lens, In a plan view, the first lens overlaps with the light source, and the first support portion overlaps with the electronic component.

2. The light emitting module according to claim 1, wherein: The first support portion has a light diffusing material disposed on at least one of an upper surface and a lower surface of the first support portion.

3. The light emitting module according to claim 1, wherein: The first supporting portion contains the light diffusing substance therein.

4. The light emitting module according to claim 3, wherein: The first lens and the first support portion constitute a molded body that is directly bonded to each other at their interfaces.

5. The light emitting module according to claim 4, wherein: At the interface between the first lens and the first supporting portion, the first lens is provided with a first engaging portion, and the first supporting portion is provided with a second engaging portion that fits with the first engaging portion.

6. The light emitting module according to any one of claims 1 to 5, wherein: The first support portion overlaps with an outer edge of a light emitting region of the light source in a plan view.

7. The light emitting module according to any one of claims 1 to 6, wherein: The first support portion includes an annular protrusion disposed on at least one of an upper surface and a lower surface of the first support portion.

8. The light emitting module according to any one of claims 1 to 7, wherein: The first lens is a biconvex lens, The farther away a surface of the first lens that faces the light source is from the optical axis of the first lens, the longer the distance between the surface and the light source becomes.

9. The light emitting module according to any one of claims 1 to 8, wherein: The light emitting module includes a second light transmissive member including a second lens and a second supporting portion supporting the second lens. The second lens overlaps with the first lens in a plan view, The first support portion overlaps the substrate in a plan view, At least a portion of the second support portion is located outside the substrate in a plan view, The light diffusibility of the second supporting portion is higher than the light diffusibility of the first lens.

10. The light emitting module according to any one of claims 1 to 9, wherein: The light source comprises at least one light emitting portion. The light emitting unit has: Light emitting element; a wavelength conversion member disposed on the light emitting element; and The covering member covers the side surfaces of the light emitting element and the side surfaces of the wavelength conversion member respectively.

11. The light emitting module according to claim 10, wherein: The light source has a plurality of light emitting parts. The covering member holds the plurality of light emitting elements and the plurality of wavelength conversion members as a whole.

12. The light emitting module according to any one of claims 1 to 11, wherein: The light emitting module is a flashlight light source.

13. A smart phone comprising the light emitting module according to any one of claims 1 to 12.

14. The smart phone according to claim 13, wherein: The smart phone has a housing, A portion of the first support portion and a portion of the substrate form a recessed portion including an upper surface, a side surface, and a bottom surface. The electronic component is arranged in the recessed portion. The recessed portion overlaps with the housing in a plan view.

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