Light emitting module

Abstract

A light-emitting module is provided with: a first light-emitting unit that has one or more first light-emitting elements and emits first light; a second light-emitting unit that has one or more second light-emitting elements and emits second light that is light having a different peak wavelength from the first light; a first optical member that reflects a portion of the first light and transmits a portion of the first light; a second optical member that reflects a portion of the second light and transmits a portion of the second light, and a frame that surrounds the first light-emitting unit, the second light-emitting unit, the first optical member, and the second optical member; the housing has a first window portion for extracting the first light and the second light traveling in a predetermined direction via the first optical member and the second optical member, and a second window portion for extracting the first light traveling in a direction different from the predetermined direction via the first optical member. And a third window section that extracts the second light that travels in a direction different from the predetermined direction via the second optical member.

Description

[0001] This application is a divisional application of the invention patent application with the application date of February 10, 2021, application number 202180014497.0, and invention name “Light-emitting module”. Technical Field

[0002] The present disclosure relates to a light emitting module. Background Art

[0003] Patent Document 1 discloses a light source device comprising a light source unit having multiple light sources each emitting light of different colors or wavelengths, with the light source unit emitting a composite light obtained by combining the individual lights. Furthermore, the light source unit of Patent Document 1 also includes multiple optical components such as lenses and reflectors, or photodetectors. A light-emitting module is also known that, as exemplified by the light source unit of Patent Document 1, includes a light-emitting element and an optical control component for controlling the light emitted from the light-emitting element, thereby emitting a desired light.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2017-183690 Summary of the Invention

[0007] Problems to be solved by the invention

[0008] An object of the present disclosure is to realize a light emitting module that is easy to operate.

[0009] Technical solutions to solve problems

[0010] The embodiment discloses a light emitting module comprising:

[0011] a first light-emitting unit having one or more first light-emitting elements and emitting a first light;

[0012] a second light emitting unit having one or more second light emitting elements, emitting light having a different peak wavelength from the first light, namely, second light;

[0013] a first optical component that reflects a portion of the first light and transmits a portion thereof;

[0014] a second optical component that reflects a portion of the second light and transmits a portion thereof,

[0015] a frame, which surrounds the first light-emitting unit, the second light-emitting unit, the first optical component, and the second optical component;

[0016] The frame has a first window portion for taking out the first light and the second light traveling along a prescribed direction via the first optical component and the second optical component, a second window portion for taking out the first light traveling along a direction different from the prescribed direction via the first optical component, and a third window portion for taking out the second light traveling along a direction different from the prescribed direction via the second optical component.

[0017] In another embodiment of the present invention, the first light-emitting unit includes the plurality of first light-emitting elements, a focusing lens for focusing light emitted from the plurality of first light-emitting elements, a wavelength conversion component for incident on the focused light, and a collimating lens for collimating the first light emitted from the wavelength conversion component.

[0018] In another embodiment of the present invention, the second light-emitting unit includes a plurality of second light-emitting elements, a focusing lens that focuses the second light emitted from the plurality of second light-emitting elements, a diffusion plate that diffuses the focused second light, and a collimating lens that collimates the diffused second light.

[0019] In another embodiment of the present invention, the frame has: a base on which the first light-emitting unit, the second light-emitting unit, the first optical component and the second optical component are arranged; and a cover that surrounds the first light-emitting unit, the second light-emitting unit, the first optical component and the second optical component arranged on the base, and has the first window portion, the second window portion and the third window portion.

[0020] In another embodiment of the present invention, a first light detecting unit is provided for detecting the first light emitted from the second window.

[0021] The second window is provided between the first light detecting element and the first light emitting unit.

[0022] In another embodiment of the present invention, a second light detecting unit is provided for detecting the second light emitted from the third window.

[0023] The third window is provided between the second light detecting component and the second light emitting unit.

[0024] The cover has the first window portion on a first surface, and has the second window portion and the third window portion on a second surface that is different from the first surface.

[0025] In another embodiment of the present invention, the area of the emission port of the first window portion serving as the light exit is larger than either the area of the emission port of the second window portion serving as the light exit or the area of the emission port of the third window portion serving as the light exit.

[0026] In another embodiment of the present invention, the third window portion includes a condenser lens for condensing light incident on the third window portion.

[0027] The second window portion does not have a condenser lens.

[0028] In another embodiment of the present invention, the frame takes out the first light reflected by the first optical component and the second light reflected by the second optical component from the first window portion, takes out the first light transmitted through the first optical component from the second window portion, and takes out the second light transmitted through the second optical component from the third window portion.

[0029] In another embodiment of the present invention, there are a plurality of connectors, each of which has a first connector portion, a second connector portion, and a conductive portion connecting the first connector portion and the second connector portion.

[0030] In the plurality of connectors, the first connector portion is longer than the second connector portion in a direction perpendicular to the direction in which the conductive portion connects the first connector portion and the second connector portion.

[0031] The plurality of connectors include a first connector and a second connector having different lengths of the conductive portions.

[0032] The first connector and the second connector are arranged side by side, and the first connector parts of the respective connectors are staggered in the direction in which the conductive parts are connected.

[0033] An embodiment discloses a light-emitting module, which comprises: a first light-emitting unit, which comprises a first light-emitting device, the first light-emitting device having a plurality of first light-emitting portions each having a light emitting surface and emitting light from a plurality of first light-emitting elements, a heat dissipation surface arranged on the opposite side of the light-emitting surface, and a connection portion located between the light-emitting surface and the heat dissipation surface and having a wiring mounting surface for electrically connecting the plurality of first light-emitting elements, the first light-emitting unit emitting first light; a first optical component, which reflects the first light; a frame, which comprises a base portion for configuring the first light-emitting unit and the first optical component, and a cover portion surrounding the light-emitting device, the light-emitting device surrounding the first light-emitting unit and the first optical component configured on the base; a heat sink, which is connected to the heat dissipation surface and has a mounting surface for mounting the first light-emitting device, the wiring mounting surface extending above the first upper surface of the frame and partially exposed to the outside of the frame.

[0034] Effects of the Invention

[0035] According to the present disclosure, it is possible to realize a light emitting module that is easy to handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a perspective view of the light emitting module according to the first embodiment.

[0037] Figure 2 It is a plan view of the light emitting module according to the first embodiment.

[0038] Figure 3 This is a perspective view of the housing in the light emitting module according to the first embodiment as viewed from a certain direction.

[0039] Figure 4 It is from Figure 3 Perspective views of the housing of the light emitting module according to the first embodiment viewed from different directions.

[0040] Figure 5 This is a perspective view of the light emitting module according to the first embodiment with the cover of the housing removed.

[0041] Figure 6 It is a schematic diagram showing the arrangement of light-emitting devices in the light-emitting module according to the first embodiment.

[0042] Figure 7 This is a plan view of the light emitting module according to the first embodiment with the cover of the housing removed.

[0043] Figure 8 This is a plan view for explaining the optical path of light in the light emitting module according to the first embodiment.

[0044] Figure 9 This is a side view for explaining the arrangement of the wavelength conversion member and the protective member in the light emitting module according to the first embodiment.

[0045] Figure 10 yes Figure 2 A cross-sectional view of the light emitting module at the XX section line.

[0046] Figure 11 yes Figure 10 An enlarged view of the dotted line portion in the cross-sectional view.

[0047] Figure 12 This is a perspective view of the light guide portion in the light emitting module according to the first embodiment.

[0048] Figure 13 It is a perspective view of a light emitting module according to a second embodiment.

[0049] Figure 14 This is a cross-sectional view for explaining the structure of a light detection component and a window portion in the light emitting module according to the second embodiment.

[0050] Figure 15 It is a perspective view of a light emitting module according to a third embodiment.

[0051] Figure 16 It is a plan view of a light emitting module according to a third embodiment.

[0052] Figure 17 yes Figure 16 A cross-sectional view of the light emitting module taken along the XVII-XVII cross-sectional line.

[0053] Figure 18 yes Figure 17 An enlarged view of the dotted line portion in the cross-sectional view.

[0054] Figure 19 The light emitting module of the third embodiment includes a light detecting component. Figure 18 Enlarged view of the corresponding part.

[0055] Figure 20 It is a perspective view of a light emitting module according to a fourth embodiment.

[0056] Figure 21 It is a plan view of a light emitting module according to a fourth embodiment.

[0057] Figure 22 It is a side view of a light emitting module according to a fourth embodiment.

[0058] Figure 23 It is a perspective view of a light emitting module according to a fifth embodiment.

[0059] Figure 24 It is a plan view of a light emitting module according to a fifth embodiment. DETAILED DESCRIPTION

[0060] In this specification and technical proposals, polygons such as triangles and quadrilaterals are also referred to as polygons, including shapes where corners have been rounded, chamfered, corner chamfered, or rounded. Furthermore, shapes where the middle portion of a side has been processed, not just the corners (ends of the sides), are also referred to as polygons. In other words, shapes that retain the basic polygonal form but have undergone partial processing are included in the definition of "polygon" as described in this specification and technical proposals.

[0061] Furthermore, the same applies to terms that denote specific shapes, not just polygons, such as trapezoid, circle, and concave-convex. Furthermore, the same applies to the processing of the individual sides that form that shape. In other words, even if processing has been applied to the corners or the middle of a side, the processed portion is included in the definition of "side." Furthermore, when distinguishing a "polygon" or "side" without partial processing from the processed shape, the term "strict" is used, for example, as a "strict quadrilateral."

[0062] In addition, in this specification or technical proposal, expressions such as up and down, left and right, front and back, front and back, and front and back merely describe relative positions, orientations, and directions, and may not necessarily correspond to the relationships in use. For example, even if a part and a finished product are mounted so that the top surface of the part is on the side of the finished product, the top surface of the part remains unchanged.

[0063] In this specification or technical proposal, when a component exists in multiple forms, the term "first" or "second" may be appended to the beginning of the component to distinguish each component. Furthermore, when the objects or viewpoints of distinction differ between this specification and the technical proposal, the same appended term may not refer to the same object in both the specification and the technical proposal.

[0064] For example, in this specification, there are objects that are distinguished by the addition of "first," "second," and "third." When the claims are described with only "first" and "third" as objects in this specification, they may be distinguished by the addition of "first" and "second" in the claims for ease of understanding. In this case, the objects annotated as "first" and "second" in the claims refer to the objects annotated as "first" and "third" in this specification.

[0065] The following describes embodiments of the present invention with reference to the accompanying drawings. The embodiments illustrated herein embody the technical concepts of the present invention but do not limit the present invention. In the following description, identical names and symbols denote identical or similar components, and duplicate descriptions may be omitted as appropriate. Furthermore, the sizes and positional relationships of components shown in the accompanying drawings may be exaggerated for ease of understanding.

[0066] <First embodiment>

[0067] The light emitting module 1 according to the first embodiment will be described. Figures 1 to 12 This is a diagram for explaining an exemplary embodiment of the light emitting module 1 . Figure 1 It is a perspective view of the light emitting module 1 . Figure 2 is a top view of the light emitting module 1 . Figure 3 and Figure 4 It is a perspective view of the housing 10 in the light emitting module 1 . Figure 5 This is a perspective view of the light emitting module 1 with the cover 12 of the housing 10 removed. Figure 6 2 is a schematic diagram showing the arrangement of the light emitting devices 21 in the light emitting module 1 . Figure 7 This is a plan view of the light emitting module 1 with the cover 12 of the housing 10 removed. Figure 8 It is a plan view for explaining the light path in the light emitting module 1 . Figure 9This is a side view for explaining the arrangement of the wavelength conversion member 26 and the protection member 27 in the light emitting module 1 . Figure 10 yes Figure 2 Cross-sectional view at the X-X section line. Figure 11 It will Figure 10 An enlarged view of a portion of the window portion 13 surrounded by a dotted line in the cross-sectional view of FIG. Figure 12 It is a perspective view of the light guide portion 141 constituting the window portion 13 in the light emitting module 1 .

[0068] In addition, Figure 3 In the embodiment, the light guide portions 141 of the three window portions 13 of the frame 10 are removed. Figure 5 In the perspective view, the light-transmitting member 140 of the window portion 13 of the cover portion 12 is not removed. Figure 7 In the top view of FIG, the portion of the light emitting unit 20 surrounded by the dotted line frame is shaded. Figure 8 In FIG, the light path of light is indicated by a dotted line, and for the sake of convenience, the light-transmitting component 140 and the three light-guiding parts 141 are recorded. Figure 8 In FIG. 1 , a protection area for protecting wiring formed by the protection component 27 is described by hatching. Figure 9 This is a side view of the wavelength conversion member 26 and the protective member 27 disposed on the base 11 as viewed from the light emitting device 21 side in the light emitting unit 20 , with other components removed.

[0069] The light-emitting module 1 includes multiple components, including a housing 10, one or more light-emitting units 20, one or more optical components 30, and a heat sink 40. For example, the light-emitting module 1 shown in the figure includes multiple light-emitting units 20 and multiple optical components 30. Specifically, the light-emitting module 1 shown in the figure includes three light-emitting units 20 and three optical components 30.

[0070] The light emitting module 1 controls light emitted from one or more light emitting units 20 and emits it to the outside. In addition, the one or more light emitting units 20 are arranged inside the housing 10. The light emitted from the one or more light emitting units 20 is emitted to the outside from a predetermined location of the housing 10.

[0071] In addition, one or more optical components 30 are disposed inside the housing 10. The one or more optical components 30 control the light emitted from the one or more light emitting units 20. In addition, the heat generated from the one or more light emitting units 20 is dissipated through the heat sink 40.

[0072] First, each component will be described.

[0073] (Frame 10)

[0074] The frame 10 has an upper surface, a lower surface, and a plurality of side surfaces. Furthermore, the frame 10 may have a plurality of upper surfaces. In the example of the light emitting module 1 shown in the figure, the frame 10 has three upper surfaces and three side surfaces.

[0075] The housing 10 has a configuration area 110 for configuring one or more components. The configuration area 110 is composed of a single plane. Alternatively, the configuration area 110 may be composed of multiple planes. For example, a stepped structure may be provided, with components configured on the upper and lower planes.

[0076] The multiple side surfaces of the frame 10 intersect with the plane having the configuration area 110 and extend upward from the plane. Furthermore, the multiple side surfaces include two opposing side surfaces (two first side surfaces). The two first side surfaces are opposed to each other with the configuration surface sandwiched therebetween. Furthermore, the multiple side surfaces include a side surface (second side surface) connecting the two first side surfaces. Furthermore, the second side surface may also connect the two first side surfaces via one or more other side surfaces.

[0077] The side surfaces of the frame 10 do not surround the entire circumference of the configuration area 110. In addition, the portion of the frame 10 where no side surfaces are provided becomes an opening (see Figure 4 The opening on the frame body 10 is provided between the upper surface and the lower surface and between the two first side surfaces. In addition, the plurality of side surfaces may also surround the entire circumference of the configuration area 110.

[0078] In the illustrated example of the light-emitting module 1, the housing 10 includes two first side surfaces that oppose each other and sandwich the configuration region 110, and a second side surface that intersects the two first side surfaces. Furthermore, on each of the two first side surfaces, the side that opposes the side intersecting the second side surface forms a portion of the outer edge of the opening.

[0079] The side surface intersecting the plane containing the configuration area 110 intersects with an upper surface 121 (first upper surface) on the side opposite to the side intersecting the plane containing the configuration area 110. In the illustrated example of the light-emitting module 1, the housing 10 has multiple upper surfaces including the first upper surface. The multiple upper surfaces include an upper surface 112 (second upper surface) disposed outside the configuration area 110 with the side surface as a boundary. Furthermore, the multiple upper surfaces include an upper surface 123 (third upper surface) located below the first upper surface, intersecting the side surface on the side opposite to the side intersecting the plane containing the configuration area 110.

[0080] In the illustrated example of the light-emitting module 1, the first upper surface is positioned between the second and third upper surfaces in a plan view. Furthermore, the housing 10 includes an upper surface 114 (fourth upper surface) positioned on the opposite side of the second upper surface relative to the first and third upper surfaces in a plan view. Therefore, the first upper surface is positioned between the second and fourth upper surfaces. Furthermore, the third upper surface is positioned between the second and fourth upper surfaces.

[0081] The frame 10 includes a window portion 13 that includes an area for light to pass through. Furthermore, the frame 10 includes multiple windows 13. The multiple windows 13 are each provided on any surface constituting the frame 10. Furthermore, the multiple windows 13 are each provided on any of the multiple side surfaces. Furthermore, a window 13 may also be provided on the first upper surface.

[0082] Furthermore, multiple windows 13 are provided on multiple surfaces of the frame 10. That is, at least one window 13 is provided on the first surface of the frame 10, and at least one window 13 is provided on the second surface of the frame 10. Alternatively, multiple windows 13 may be provided on three or more different surfaces of the frame 10. Alternatively, multiple windows 13 may be provided on a single surface of the frame 10.

[0083] The housing 10 includes a surface on which two or more windows 13 are provided and a surface on which only one window 13 is provided. The housing 10 may not include a surface on which two or more windows 13 are provided.

[0084] In the illustrated example of the light-emitting module 1, the housing 10 includes four windows 13 as the plurality of windows 13. Furthermore, the plurality of windows 13 are provided on one of the two first side surfaces and the second side surface. Furthermore, the number of side surfaces having windows 13 is two. Furthermore, only one window 13 is provided on the first side surface. Furthermore, two or more windows 13 are provided on the second side surface.

[0085] The plurality of windows 13 have emission ports 14 that serve as light exit ports. The plurality of windows 13 include two or more windows 13 with different areas of emission ports 14. In the illustrated example of the light-emitting module 1, the plurality of windows 13 include two windows 13 with different areas of emission ports 14. Furthermore, the window 13 provided on the first side surface has a larger area of emission port 14 than any window 13 provided on the second side surface.

[0086] The frame 10 has a surface on which one or more through holes are formed. In addition, the frame 10 has multiple surfaces on which at least one through hole is formed. Multiple through holes are formed on multiple surfaces of the frame 10. The multiple through holes correspond to the multiple window portions 13. That is, through holes are formed on the surface on which the window portions 13 are provided (refer to Figure 3). In addition, an injection port 14 is provided in the through hole. In addition, the through hole may also be the injection port 14.

[0087] A window 13 is provided in each of the plurality of through-holes. Alternatively, the through-holes may be the windows 13 of the frame 10. Window 13 is formed, for example, by sealing the through-holes with a light-transmitting member 140. For light-transmitting member 140, for example, light-transmitting glass can be used. Light-transmitting herein means having a transmittance of 90% or greater with respect to visible light or light within a specific wavelength range (color) within visible light.

[0088] In addition, for example, the window portion 13 is formed by embedding a light guide portion 141 having a light guide path into the through hole. The light guide portion 141 is composed of, for example, a light guide member 142, a connecting member 143, and a filter 144 (for the light guide portion 141, see in particular Figure 7 ).

[0089] The light guide member 142 includes a light guide path for light to pass through. The light guide path is, for example, a hollow space. The light entrance and exit surfaces of the light guide path are smaller than the through hole. The exit surface of the light guide path serves as the exit port 14 of the window portion 13 or is connected to the exit port 14.

[0090] The connection member 143 holds the light guide member 142 and is connected to the surface where the through hole is formed. Screws, adhesives, etc. can be used for the connection.

[0091] The optical filter 144 transmits or blocks light in a predetermined wavelength range. By providing the optical filter 144 , the wavelength range of light that can be emitted from the emission port 14 can be limited.

[0092] Furthermore, a connection hole 15 is formed in the frame 10. The connection hole 15 is formed on the first upper surface. In the illustrated example of the light-emitting module 1, the connection hole 15 is located near the third upper surface. Furthermore, when viewed from above, the distance from the third upper surface to the connection hole 15 is shorter than the distance from the second upper surface to the connection hole 15. Furthermore, the window 13 provided on the first side surface is located near the second side surface.

[0093] The frame 10 is formed by connecting parts including a base 11 and a cover 12. The base 11 has a configuration area 110. In addition, the base 11 has a lower surface. The cover 12 has a plurality of side surfaces intersecting with the configuration area 110, and a first upper surface. In addition, the cover 12 has a plurality of windows 13. In addition, a connection hole 15 is formed in the cover 12. In the example of the light-emitting module 1 shown in the figure, the base 11 also has a second upper surface. In addition, the base 11 also has a fourth upper surface. The cover 12 has a third upper surface.

[0094] Each surface of the frame 10 can be formed primarily from a metal such as aluminum. With the exception of the light-emitting port 14 of the window 13, each surface of the frame 10 is formed from a material having light-blocking properties. Light-blocking properties refer to limiting the transmittance of visible light to 5.0% or less. Materials other than metal can also be used as the primary material. Furthermore, light-blocking properties can be achieved through surface treatment.

[0095] (Light-emitting unit 20)

[0096] The light-emitting unit 20 is a unit that includes one or more light-emitting elements and is composed of one or more components including the light-emitting elements. For example, the light-emitting unit 20 may include a wavelength conversion component 26 in addition to the light-emitting elements. Furthermore, for example, the light-emitting unit 20 may include optical components in addition to the light-emitting elements.

[0097] The light-emitting unit 20 is a unit for emitting light within a specific wavelength range. For example, the light within the specific wavelength range is included in the wavelength range of light emitted from the light-emitting element. Alternatively, for example, the light within the specific wavelength range is included in the wavelength range of light emitted after conversion by a wavelength conversion component based on the light from the light-emitting element.

[0098] Light within the specific wavelength range includes light having a peak wavelength emitted from the light-emitting unit 20. Furthermore, if light within the specific wavelength range is included in the light emitted from the light-emitting element, the peak wavelength of the light emitted from the light-emitting element is included in the specific wavelength range. If light within the specific wavelength range is light converted and emitted by a wavelength conversion component, the peak wavelength of the light converted and emitted by the wavelength conversion component is included in the specific wavelength range.

[0099] Furthermore, the light emitting unit 20 can include an optical component 24. The optical component 24 is, for example, a condenser lens. Furthermore, the light emitting unit 20 can include an optical component 28. The optical component 28 is, for example, a collimator lens. Furthermore, the light emitting unit 20 can include an optical component 25. The optical component 25 is, for example, a diffuser.

[0100] The light emitting unit 20 can be configured with a plurality of optical components. The plurality of optical components include the optical component 24, the optical component 28, or the optical component 25. Furthermore, the light emitting unit 20 may include optical components other than these. Furthermore, some or all of these optical components may be omitted.

[0101] For example, the light-emitting unit 20 can be configured to include a plurality of light-emitting elements, a condenser lens (optical component 24) that condenses the light emitted from the plurality of light-emitting elements, a diffuser plate (optical component 25) that diffuses the condensed light, and a collimator lens (optical component 28) that collimates the diffused light. With this configuration, the light-emitting unit 20 can emit collimated light by condensing the light emitted from the plurality of light-emitting elements.

[0102] For example, the light-emitting unit 20 can be configured to include a plurality of light-emitting elements, a condenser lens (optical component 24) that condenses light emitted from the plurality of light-emitting elements, a wavelength conversion component 26 into which the condensed light enters, and a collimator lens (optical component 28) that collimates the light emitted from the wavelength conversion component 26. With this configuration, the light-emitting unit 20 can emit collimated light from the light emitted from the wavelength conversion component 26.

[0103] The light-emitting unit 20 can be configured to include one or more light-emitting devices 21 equipped with multiple light-emitting elements. The light-emitting device 21 includes one or more light-emitting sections 22 that emit light from the multiple light-emitting elements to the outside. The light-emitting device 21 also includes a connection section 23 that electrically connects to the multiple light-emitting elements.

[0104] The light-emitting portion 22 has a light-emitting surface for emitting light. The light-emitting surfaces of one or more light-emitting portions 22 are mounted facing the same direction. The light-emitting device 21 has a first mounting surface for mounting the one or more light-emitting portions 22 and a second mounting surface opposite the first mounting surface. The first mounting surface faces the same direction as the light-emitting surface of the light-emitting portion 22. The second mounting surface faces the opposite direction from the light-emitting surface of the light-emitting portion 22. The second mounting surface is located opposite the light-emitting surface of the light-emitting portion 22.

[0105] The connecting portion 23 has a first surface provided with a wiring area for wiring and a second surface opposite the first surface. The first surface of the connecting portion 23 is located between the light emitting surface and the second mounting surface. In addition, the first surface of the connecting portion 23 is located between the first mounting surface and the second mounting surface.

[0106] In the illustrated example of the light-emitting module 1, the light-emitting unit 20 includes multiple light-emitting devices 21. Furthermore, each light-emitting device 21 includes multiple light-emitting sections 22. Furthermore, the multiple light-emitting sections 22 are arranged in a matrix. In one light-emitting unit 20, two light-emitting devices 21 each having light-emitting sections 22 arranged in four rows and two columns are arranged side by side, resulting in a configuration of light-emitting sections 22 arranged in four rows and four columns.

[0107] As the light-emitting element, a semiconductor laser element is used. Alternatively, an LED, organic EL, or the like may also be used. For example, the light-emitting element may use light having a peak wavelength within the range of 365nm to 494nm. Furthermore, light having a peak wavelength outside this range may also be used. Furthermore, the wavelength range is not limited to visible light. For example, light having a peak wavelength within the ultraviolet wavelength range may also be used.

[0108] For example, the plurality of light-emitting elements may include a light-emitting element that emits blue light. Alternatively, the plurality of light-emitting elements may include a light-emitting element that emits purple light. Alternatively, the plurality of light-emitting elements may emit light of other colors.

[0109] All light emitting elements included in one light emitting unit 20 emit light of the same color. When the light emitting module 1 includes a plurality of light emitting units 20, the plurality of light emitting units 20 may include two or more light emitting units 20 that emit light of different colors.

[0110] Here, blue light refers to light with a peak emission wavelength within the range of 430nm to 494nm. Violet light refers to light with a peak emission wavelength within the range of 365nm to 430nm. Examples of light-emitting elements that emit both blue and violet light include semiconductor laser elements containing nitride semiconductors. Examples of nitride semiconductors include GaN, InGaN, and AlGaN.

[0111] The wavelength conversion member 26 emits light of a different wavelength based on part or all of the light of a predetermined wavelength incident on the wavelength conversion member 26. Specifically, only part of the light of a predetermined wavelength incident on the wavelength conversion member 26 is emitted from the wavelength conversion member 26, or none of the light is emitted. Furthermore, upon the incidence of light of a predetermined wavelength, the wavelength conversion member 26 emits light of a wavelength different from that of the incident light.

[0112] The wavelength conversion member 26 includes, for example, a phosphor. For example, a garnet-based phosphor such as YAG or LAG can be used as the phosphor. Alternatively, other phosphors can be used.

[0113] The wavelength conversion member 26 can also include a wavelength conversion unit 261 and a conversion control unit 262. The wavelength conversion unit 261 emits light converted to a different wavelength. The conversion control unit 262 controls the operation of the wavelength conversion unit 261 or the wavelength conversion function performed by the wavelength conversion unit 261. The wavelength conversion unit 261 is connected to the conversion control unit 262.

[0114] The wavelength conversion unit 261 includes, for example, a phosphor. A phosphor wheel or a phosphor plate can be used as the wavelength conversion unit 261. The conversion control unit 262 can be, for example, a motor that controls the rotation of the phosphor wheel or a shutter that controls the incidence of light on the phosphor plate. By rotating the phosphor wheel, heat generated by light exposure can be dispersed within the phosphor, reducing degradation.

[0115] The conversion control unit 262 operates when supplied with power. Therefore, it has a connection portion for electrically connecting to an external power source. In the illustrated example of the light-emitting module 1, a phosphor wheel is used as the wavelength conversion unit 261, and a motor that rotates the wheel is used as the conversion control unit 262.

[0116] Furthermore, the light emitting unit 20 can be configured to include a protective member 27. The protective member 27 is disposed near the wavelength conversion member 26. The protective member 27 includes a connection portion 271 connected to the wavelength conversion member 26. The protective member 27 is also connected to the conversion control unit 262. The protective member 27 is connected to the conversion control unit 262 on the surface of the conversion control unit 262 opposite to the surface connected to the wavelength conversion unit 261.

[0117] The protective member 27 is positioned near the wavelength converter 261, but not in contact with it. The protective member 27 includes a protective portion 272 extending from a position connected to the conversion control unit 262 toward the wavelength converter 261. The protective portion 272 is constructed by bending a flat plate at its center. The tip of the protective portion 272 is positioned closest to the wavelength converter 261.

[0118] By providing the protective member 27, light incident on the wavelength converter 261 can be protected from the wiring, thereby preventing the light traveling toward the wavelength converter 261 from being blocked by the wiring connected to the connection portion of the conversion control unit 262. Examples of wiring obstructing wavelength conversion include contact between the wiring and the wavelength converter 261 or placement of the wiring on the optical path of the light.

[0119] (Optical component 30)

[0120] The optical component 30 has a high reflectivity for light within a predetermined wavelength range. High reflectivity here means, for example, a reflectivity of 95% or more. Alternatively, it can be said to have a transmittance of less than 5% for light within a predetermined wavelength range.

[0121] The optical component 30 has a high transmittance for light in a wavelength range different from the wavelength range having a high reflectance. The high transmittance here refers to a transmittance of 90% or more, for example. The optical component 30 is, for example, a dichroic mirror.

[0122] (Radiator 40)

[0123] The heat sink 40 has an upper surface, a lower surface, and side surfaces. Furthermore, the heat sink 40 has a mounting surface for mounting a heat source. Any of the upper surface, lower surface, or side surfaces can be used as the mounting surface. The heat sink 40 dissipates heat generated by the heat source mounted on the mounting surface to the exterior of the light-emitting module.

[0124] In addition, the heat sink 40 may also have one or more side surfaces. In the example of the light emitting module 1 shown in the figure, the heat sink 40 has a rectangular parallelepiped shape.

[0125] (Light-emitting module 1)

[0126] Next, the light-emitting module 1 will be described. One or more light-emitting units 20 are disposed in the arrangement region 110 of the housing 10. Furthermore, one or more optical components 30 are disposed in the arrangement region 110 of the housing 10. Furthermore, a heat sink 40 is disposed near an opening formed in a portion of the housing 10. Alternatively, the heat sink 40 may be disposed near the opening while sealing the opening.

[0127] In the illustrated example of the light-emitting module 1, a plurality of light-emitting units 20 are arranged in an arrangement region 110 of the base 11 of the housing 10. A plurality of optical components 30 are arranged in the arrangement region 110 of the base 11 of the housing 10. A heat sink 40 is arranged on the fourth upper surface of the base 11 of the housing 10. Furthermore, in a plan view, the cover 12 of the housing 10 and the heat sink 40 are arranged side by side. A side surface of the heat sink 40 is provided near the opening of the housing 10.

[0128] The frame 10 surrounds one or more light-emitting units 20. Furthermore, the frame 10 surrounds one or more optical components 30. The upper surface of the frame 10 is positioned directly above the one or more light-emitting units 20. Furthermore, the upper surface of the frame 10 is positioned directly above the one or more optical components 30. Furthermore, a portion of the one or more light-emitting units 20 may be exposed from the opening. In other words, the upper surface of the frame 10 may not be directly above the portion.

[0129] One or more light-emitting units 20 are surrounded by the lower surface and multiple side surfaces of the frame 10. Furthermore, one or more light-emitting units 20 are disposed between the upper and lower surfaces of the frame 10, between the two first side surfaces of the frame 10, and between the second side surface of the frame 10 and the side surface of the heat sink 40. In this paragraph, even if "one or more light-emitting units 20" is replaced with "one or more optical components 30," the same description remains.

[0130] In the illustrated example of the light-emitting module 1, a plurality of light-emitting units 20 are arranged from one first side surface to the other first side surface. Furthermore, a plurality of optical components 30 are arranged in an arrangement area 110 in the base portion 11 of the housing 10. Furthermore, the plurality of optical components 30 are arranged from one first side surface to the other first side surface.

[0131] One or more light emitting devices 21 included in the light emitting unit 20 are mounted on the mounting surface of the heat sink 40 . Therefore, the light emitting devices 21 mounted on the mounting surface of the heat sink 40 are arranged in the arrangement region 110 of the housing 10 .

[0132] The second mounting surface of the light-emitting device 21 is connected to the mounting surface of the heat sink 40. The second mounting surface serves as a heat dissipation surface for dissipating heat generated by the light-emitting elements of the light-emitting device 21 to the heat sink. The second mounting surface can be directly connected to the mounting surface of the heat sink 40 or connected via another component. If connected via another component, it is preferable to ensure that the heat dissipation effect is not significantly impaired.

[0133] One or more light-emitting elements 21 are mounted so as not to protrude from the mounting surface of the heat sink 40 when viewed from above parallel to the mounting surface of the heat sink 40. The outer edge of the second mounting surface of the light-emitting element 21 is confined within the outer edge of the mounting surface of the heat sink 40. This improves heat dissipation.

[0134] In the illustrated example of the light-emitting module 1, the side surface of the heat sink 40, located near the opening, serves as the mounting surface for the heat source. Furthermore, multiple light-emitting devices 21 are mounted on the mounting surface of the heat sink 40. Furthermore, all of the multiple light-emitting devices 21 included in the multiple light-emitting units 20 are mounted on the mounting surface of the heat sink 40. Each light-emitting device 21 emits light from multiple light-emitting portions 22 toward the second side surface of the housing 10.

[0135] The connection portion 23 of one or more light-emitting devices 21 included in the light-emitting module 1 extends above the third upper surface of the frame 10, with a portion thereof exposed to the outside of the frame 10. Furthermore, the connection portion 23 extends from below the third upper surface of the frame 10 to above. In other words, a portion of the connection portion 23 protrudes from the third upper surface of the frame 10. Exposing the connection portion 23 enables connection to external wiring. External wiring is connected to the first surface of the connection portion 23, for example. The first surface of the connection portion 23 can be referred to as a wiring mounting surface for electrically connecting the one or more light-emitting elements 21.

[0136] Furthermore, the connection portion 23 is positioned below the first upper surface of the housing 10. That is, the connection portion 23 does not extend above the first upper surface of the housing 10. By providing a third upper surface lower than the first upper surface on the housing 10 and exposing the connection portion 23 between the first and third upper surfaces, the connection portion 23 can be protected. For example, even if a flat surface of another module is positioned on the first upper surface of the light-emitting module 1, contact between the other module and the connection portion 23 can be avoided, resulting in an easy-to-use light-emitting module 1.

[0137] Furthermore, the connection portion 23 is positioned below the upper surface of the heat sink 40. That is, the connection portion 23 does not extend above the upper surface of the heat sink 40. For example, even if the flat surface of another module is positioned on the first upper surface of the housing 10 and the upper surface of the heat sink 40, contact between the other module and the connection portion 23 can be avoided. Furthermore, the height of the first upper surface of the housing 10 and the upper surface of the heat sink 40 are equal. When the flat surface of another module is positioned on the first upper surface of the housing 10 and the upper surface of the heat sink 40, the placement of the other module is stable.

[0138] In the illustrated example of the light-emitting module 1, the plurality of light-emitting units 20 include a light-emitting unit 20 having a wavelength conversion member 26. In such a light-emitting unit 20, light subjected to wavelength conversion by the wavelength conversion member 26 becomes light within a specific wavelength range and is emitted from the light-emitting unit 20. In this case, light from the light-emitting element that is not within the wavelength range of the light subjected to wavelength conversion does not become light within the specific wavelength range.

[0139] For example, the illustrated light-emitting module 1 includes a light-emitting unit 20 having one or more light-emitting elements that emit light with a peak wavelength within the range of 430 nm to 494 nm, and a wavelength conversion member 26 comprising a YAG phosphor. Furthermore, the light-emitting unit 20 includes one or more light-emitting devices 21 that emit light with a peak wavelength within the range of 430 nm to 494 nm, and a wavelength conversion member 26 comprising a YAG phosphor.

[0140] For example, the illustrated light-emitting module 1 includes a light-emitting unit 20 having one or more light-emitting elements emitting light with a peak wavelength within the range of 430 nm to 494 nm, and a wavelength conversion member 26 comprising a LAG phosphor. Furthermore, the light-emitting module 1 includes a light-emitting unit 20 having one or more light-emitting devices 21 emitting light with a peak wavelength within the range of 430 nm to 494 nm, and a wavelength conversion member 26 comprising a LAG phosphor.

[0141] In the example of the light-emitting module 1 shown in the figure, the plurality of light-emitting units 20 include light-emitting units 20 that emit only light from one or more light-emitting devices 21. In such a light-emitting unit 20, the light emitted from the one or more light-emitting devices 21 is light within a specific wavelength range emitted from the light-emitting unit 20.

[0142] For example, the illustrated light-emitting module 1 includes a light-emitting unit 20 having one or more light-emitting elements that emit light with a peak wavelength within the range of 365 nm to 430 nm. Furthermore, the light-emitting unit 20 includes one or more light-emitting devices 21 that emit light with a peak wavelength within the range of 365 nm to 430 nm. Furthermore, the light-emitting unit 20 does not include a component corresponding to the wavelength conversion member 26.

[0143] For example, when a wavelength conversion member such as a phosphor is used to generate light emitted from the light-emitting device 21, the wavelength conversion member is not a component corresponding to the wavelength conversion member 26. In other words, even if the light-emitting device 21 includes a wavelength conversion member as a component, it does not include a component corresponding to the wavelength conversion member 26.

[0144] Furthermore, when the light-emitting module 1 includes a plurality of light-emitting units 20, the peak wavelength of light within a specific wavelength range emitted from each of the plurality of light-emitting units 20 is different. For example, when the plurality of light-emitting units 20 includes two light-emitting units 20 (a first light-emitting unit 20 and a second light-emitting unit 20), the peak wavelength of light emitted from the first light-emitting unit 20 (first light) and the peak wavelength of light emitted from the second light-emitting unit 20 (second light) are different from each other.

[0145] Furthermore, when the light-emitting module 1 includes a plurality of light-emitting units 20, the plurality of light-emitting units 20 may include two or more light-emitting units 20 that emit light of the same peak wavelength. Furthermore, the plurality of light-emitting units 20 may include two or more light-emitting units 20 that emit light of the same wavelength range. Furthermore, the plurality of light-emitting units 20 may include two or more light-emitting units 20 that emit light of the same specific wavelength range.

[0146] For example, the illustrated light-emitting module 1 includes three light-emitting units 20, each emitting light having different peak wavelengths. Furthermore, two light-emitting units 20 share a common wavelength conversion member 26. Wavelength conversion member 26 is provided with two wavelength conversion regions that convert light into different wavelengths. The two light-emitting units 20 each direct light from a light-emitting device 21 into a different wavelength conversion region.

[0147] In the wavelength conversion component 26 shared by the two light-emitting units 20, the wavelength conversion portion 261 is set from a position where light emitted from the light-emitting device 21 of one of the two light-emitting units 20 is incident to a position where light emitted from the light-emitting device 21 of the other light-emitting unit 20 is incident.

[0148] In addition, when viewed from above, the conversion control unit 262 and the protective component 27 are arranged between a straight line that passes through a position where light emitted from the light-emitting device 21 of one of the two light-emitting units 20 is incident on the wavelength conversion unit 261 and advances in a direction (first direction) perpendicular to the incident surface of the light in the wavelength conversion unit 261, and a straight line that passes through a position where light emitted from the light-emitting device 21 of the other light-emitting unit 20 is incident on the wavelength conversion unit 261 and advances in the first direction.

[0149] In the illustrated example of the light-emitting module 1, in the light-emitting unit 20 having the wavelength conversion member 26, light emitted from the plurality of light-emitting sections 22 and focused by the condenser lens (optical member 24) enters the wavelength conversion member 261. The protective member 27 is disposed closer to the conversion control member 262 than to the optical path of light emitted from the light-emitting section 22 closest to the conversion control member 262 until it exits the condenser lens and enters the wavelength conversion member 261. This prevents the protective member 27 from becoming an obstruction to the optical path.

[0150] The protective member 27 also includes a protective portion 272 that moves away from the conversion control unit 262 in a direction (second direction) parallel to the incident surface of the wavelength converter 261 as the light moves from the condenser lens toward the wavelength converter 261 in a plan view.

[0151] When viewed from above, the angle formed between the second direction and the protective portion 272 is equal to or smaller than the angle formed between the second direction and the direction in which light emitted from the light-emitting unit 22 closest to the conversion control unit 262 travels from the condenser lens toward the wavelength conversion unit 261. Furthermore, both angles are acute. This protective portion 272 prevents the wiring connected to the conversion control unit 262 from obstructing the optical path.

[0152] The difference between the two angles is preferably between 1 degree and 25 degrees. With this type of protection portion 272, the distance between the light emitted from the light emitting unit 22 and the protection portion 272 increases as it travels from the condenser lens toward the wavelength conversion unit 261. This prevents interference with light caused by the protection portion 272. Furthermore, a sufficient area for protecting the wiring can be ensured.

[0153] The wiring connected to the conversion control unit 262 is connected to the conversion control unit 262, and then leads to the connection hole 15 and out of the housing 10. At this time, when viewed from above, the wiring from the conversion control unit 262 to the connection hole 15 passes through the protection area ( Figure 8 In addition, the protective component 27 protects the wiring to a sufficient height through the protective portion 272 (see Figure 9 ). Thus, the wiring can be directed toward the connection hole 15 without obstructing light. Thus, the wiring is prevented from becoming an obstacle to light, and the wavelength conversion component 26 can receive power supply from an external power supply.

[0154] In a light-emitting unit 20 comprising a light-emitting device 21 having multiple light-emitting sections 22, a condenser lens (optical component 24), a wavelength conversion component 26, and a collimating lens (optical component 28), the wavelength conversion component 26 is positioned between the condenser lens and the collimating lens. Furthermore, the wavelength conversion component 26 is positioned closer to the collimating lens than the condenser lens. Furthermore, the wavelength conversion component 26 is preferably positioned near the collimating lens. Because wavelength-converted light is emitted from the wavelength conversion component 26 over a wide angle range, placing it near the collimating lens allows for collimated light with a small spot diameter. As a result, the collimating lens surface area can be designed to be smaller while collimating the same amount of light.

[0155] In the configuration area 110 of the housing 10, one light-emitting unit 20 and one optical component 30 are correspondingly configured. The light-emitting module 1 is configured with the same or more optical components 30 as the light-emitting units 20. One or more light-emitting units 20 emit light toward the second side surface. Therefore, one or more optical components 30 are each configured closer to the second side surface than the corresponding light-emitting unit 20.

[0156] Light emitted from one light emitting unit 20 enters a corresponding optical component 30. Furthermore, light within a specific wavelength range emitted from one light emitting unit 20 enters a corresponding optical component 30. Furthermore, in the illustrated example of the light emitting module 1, light within a specific wavelength range emitted from the light emitting unit 20 enters the corresponding optical component 30 in a collimated state.

[0157] Each optical component 30 reflects light within a specific wavelength range emitted from a corresponding light-emitting unit 20 toward the second side surface. The reflected light travels toward one of the two first side surfaces of the housing 10. Furthermore, each optical component 30 transmits a portion of the light within the specific wavelength range. The transmitted light travels toward the second side surface of the housing 10.

[0158] The light emitting module 1 includes an optical component 30 having high reflectivity over the entire specific wavelength range for light in a specific wavelength range from a corresponding light emitting unit 20. In this case, the ratio of reflection to transmission for light in the specific wavelength range is reflectivity and transmittance.

[0159] When the wavelength range of the spectrum of light emitted from the light-emitting unit 20 is narrow, the optical component 30 having such characteristics can generate both reflected and transmitted light. In the illustrated example of the light-emitting module 1, the optical component 30 having such characteristics is applied to a light-emitting unit 20 that does not have a wavelength conversion component 26, in other words, a light-emitting unit 20 that only emits light from one or more light-emitting devices 21. For example, at least 98% of the light within a specific wavelength range emitted from the light-emitting unit 20 is reflected by the corresponding optical component 30.

[0160] Furthermore, the light-emitting module 1 includes an optical component 30 that has a high reflectivity in a portion of the specific wavelength range and a high transmittance in another portion of the specific wavelength range for light emitted from a corresponding light-emitting unit 20. In this case, the ratio of the reflected light to the amount of light within the entire specific wavelength range and the ratio of the transmitted light to the amount of light within the entire specific wavelength range affect the ratio of the amount of light within the wavelength range with high reflectivity to the amount of light within the wavelength range with high transmittance.

[0161] When the wavelength range of the spectrum of light emitted from the light emitting unit 20 is wide, reflected light and transmitted light can be generated in this manner. In the example of the light emitting module 1 shown in the figure, the optical component 30 is applied to the light emitting unit 20 having the wavelength conversion member 26, in other words, the light emitting unit 20 that emits light whose wavelength has been converted by the wavelength conversion member 26.

[0162] The plurality of windows 13 included in the housing 10 of the light emitting module 1 include two windows 13 for extracting each of two lights that are separated by the optical component 30 and travel in different directions from the light emitted from the light emitting unit 20 .

[0163] In the light-emitting module 1, light reflected by one or more optical components 30 is emitted from any one of the plurality of windows 13 of the housing 10 to the outside of the housing 10. In the illustrated example of the light-emitting module 1, light reflected by the optical component 30 is emitted from the window 13 provided on one of the two first side surfaces of the housing 10.

[0164] In the light-emitting module 1, light transmitted through one or more optical components 30 is emitted from any of the plurality of windows 13 of the housing 10 to the outside of the housing 10. In the illustrated example of the light-emitting module 1, light transmitted through the optical component 30 is emitted from the window 13 provided on the second side surface of the housing 10.

[0165] When the light-emitting module 1 has a plurality of light-emitting units 20 and a plurality of optical components 30 corresponding thereto, the plurality of lights emitted from the plurality of light-emitting units 20 travel in a predetermined direction (third direction) via the corresponding optical components 30 and are emitted from a window portion 13 (first window portion) of the frame body 10 to the outside of the frame body 10 .

[0166] Therefore, the plurality of windows 13 include a first window for extracting the light (first light and second light) emitted from the two light-emitting units 20 (the first light-emitting unit and the second light-emitting unit). Furthermore, the plurality of windows 13 include a first window for extracting the first light and the second light that travel in a predetermined direction via the two optical components 30 (the first optical component and the second optical component) corresponding to the first light-emitting unit and the second light-emitting unit.

[0167] The plurality of lights emitted from the plurality of light emitting units 20 travel in a predetermined direction different from the third direction via the corresponding optical components 30 , and are emitted to the outside of the housing 10 from different windows 13 of the housing 10 .

[0168] Therefore, the plurality of windows 13 include two windows 13 different from the first window, one of which (second windows) extracts the first light and the other extracts the second light. Furthermore, the plurality of windows 13 include two second windows, one of which extracts the first light that has traveled in a predetermined direction different from the third direction via the first optical component corresponding to the first light-emitting unit, and the other of which extracts the second light that has traveled in a predetermined direction different from the third direction via the second optical component corresponding to the second light-emitting unit.

[0169] In the illustrated example of the light emitting module 1 , light emitted from each of the three light emitting units 20 is reflected by the corresponding optical component 30 and extracted from the first window. Furthermore, light emitted from each of the three light emitting units 20 is transmitted through the corresponding optical component 30 and extracted from different windows 13 .

[0170] The multiple lights emitted from the multiple light-emitting units 20 and emitted to the outside through the first window are combined into light, which is then emitted from the first window to the outside of the housing 10. Furthermore, the multiple lights emitted from the multiple light-emitting units 20 are combined into light passing through the same axis and are extracted from the first window. This allows the combined light emitted from the multiple light-emitting units 20 and the light emitted from a single light-emitting unit 20 to be extracted separately from the windows 13.

[0171] Thus, by providing the window 13 for emitting individual lights separately from the window 13 for emitting the combined light, the combined light and the individual lights can be easily processed separately outside the light emitting module 1. The light controlled in the light emitting module 1 can be easily used from outside the light emitting module 1.

[0172] Light in a specific wavelength range from a light emitting unit 20 located farther from the first window is reflected by the corresponding optical component 30 and passes through the optical component 30 corresponding to the light emitting unit 20 located closer to the first window.

[0173] A first window portion for collectively extracting a plurality of lights emitted from the plurality of light emitting units 20 and two or more second windows portion for individually extracting a plurality of lights emitted from the plurality of light emitting units 20 are provided on different surfaces of the housing 10 .

[0174] In the light-emitting module 1, a first window is provided on the first surface of the housing 10, and two or more second windows are provided on the second surface of the housing 10. In the illustrated example of the light-emitting module 1, the first window is provided on one of the two first side surfaces of the housing 10, and the three second windows are provided on the second side surface of the housing 10. By extracting light from different surfaces, it is possible to suppress interference between the combined light and the light emitted from a single light-emitting unit 20.

[0175] The light-emitting module 1 includes an optical component 30 having high reflectivity over the entire wavelength range of light within a specific wavelength range emitted from a corresponding light-emitting unit 20, and an optical component 30 having high reflectivity over a portion of the wavelength range of light within a specific wavelength range emitted from a corresponding light-emitting unit 20 and high transmittance over the remaining portion of the wavelength range.

[0176] Therefore, even when light emitting units 20 emitting light in a specific narrow wavelength range and light emitting units 20 emitting light in a specific wide wavelength range are mixed, optical components 30 with different characteristics corresponding to the size of the wavelength range can be used to separate reflected light and transmitted light.

[0177] Of the light incident on the second window, the light that has passed through the filter 144 is emitted from the emission port 14 to the exterior of the light-emitting module 1. The filter 144 in the second window allows only light within a specific wavelength range of the light emitted from the light-emitting unit 20 corresponding to the second window to pass through. Furthermore, only a portion of the light within the specific wavelength range is allowed to pass through. Thus, by including the filter 144 in the second window, light within a desired wavelength range of the light emitted from the light-emitting unit 20 can be extracted from the second window.

[0178] For example, the light emitted from the light-emitting unit 20 having the wavelength conversion member 26 includes light emitted from the light-emitting device and light that has undergone wavelength conversion by the wavelength conversion member 26. In this case, the specific wavelength range is the wavelength range of the light that has undergone wavelength conversion by the wavelength conversion member 26. If the light emitted from the light-emitting element is not included in this wavelength range, the light emitted from the light-emitting element is not included in the light within the specific wavelength range. Therefore, the light emitted from the light-emitting element does not pass through the filter 144 and is not emitted from the second window portion.

[0179] <Second embodiment>

[0180] Next, a light emitting module 2 according to a second embodiment will be described. Figure 13 and Figure 14 This is a diagram for explaining an exemplary embodiment of the light emitting module 2 . Figure 13 It is a perspective view of the light emitting module 2 . Figure 14 2 is a cross-sectional view for explaining the structure of the light detecting component 50 and the window portion 13 of the light emitting module 2. Figure 14 Amplified by Figure 10 The range enclosed by the dotted line is the same range.

[0181] The second embodiment illustrates an example of utilizing light emitted from a plurality of windows 13 in a light-emitting module having multiple windows 13. Specifically, this embodiment illustrates a method of utilizing the light controlled within the light-emitting module 1 outside the light-emitting module 1. The light-emitting module 2 includes one or more light detection components 50, which detect light emitted from the one or more windows 13.

[0182] The light emitting module 2 of the second embodiment is different from the light emitting module of the above-described embodiment in that it includes a light detecting element 50. Otherwise, the same structure as that of the light emitting module of the above-described embodiment can be adopted.

[0183] (Light Detection Component 50)

[0184] The light detecting component 50 includes a light receiving element 51. Furthermore, the light detecting component 50 includes a connecting component 52. The light receiving element 51 converts the irradiated light into an electrical signal. The intensity of the converted electrical signal corresponds to the intensity of the irradiated light. For example, a photodiode can be used for the light receiving element 51.

[0185] The connecting member 52 fixes the light receiving element 51 at a predetermined position. The connecting member 52 has a mounting surface on which the light receiving element 51 is mounted. The light receiving element 51 is mounted on the mounting surface of the connecting member 52.

[0186] (Light emitting module 2)

[0187] In the light-emitting module 2, the light-detecting component 50 is disposed on the side of the housing 10 opposite the light-emitting unit 20, with the surface of the housing 10 provided with the window 13 serving as the boundary. The window 13 is provided between the light-detecting component 50 and the light-emitting unit 20, which emits the light detected by the light-detecting component 50, for the light to pass therethrough. In the illustrated example of the light-emitting module 2, a second side surface is provided between the light-detecting component 50 and the light-emitting unit 20.

[0188] That is, the light emitting module 2 of the second embodiment can be manufactured by attaching the light detecting component 50 after manufacturing the light emitting module 1 of the first embodiment.

[0189] Furthermore, for example, if light emitted from the window 13 to the outside of the housing 10 is not utilized, the light detecting element 50 may be omitted and a light shielding plate may be used to block the light. In this way, depending on whether or not light emitted from the window 13 is utilized, additional components may be added to implement a light emitting module 2 corresponding to the method of utilization.

[0190] Light-emitting module 1 is easy to use because it can easily be converted into a light-emitting module equipped with a light shield or light-emitting module 2. Furthermore, light-emitting module 2 is easy to use because it has a light detection function and can easily control the output of each light.

[0191] The connecting member 52 of the light detecting member 50 is connected to the housing 10. Furthermore, the connecting member 52 is connected to the cover 12 of the housing 10. Furthermore, the connecting member 52 is connected to the window 13 of the housing 10. By being directly connected to the window 13, the positional accuracy relative to the window 13 can be improved. Alternatively, the connecting member 52 may be connected to other locations on the housing 10, such as the second upper surface.

[0192] In the light-emitting module 2, the light-receiving elements 51 of the multiple light-detecting components 50 receive light emitted from different windows 13. Furthermore, the multiple light-detecting components 50 are connected to different windows 13. In the illustrated example of the light-emitting module 2, a light-detecting component 50 is connected to each of the multiple second windows. This allows for individual detection of light emitted from each of the multiple light-emitting units 20.

[0193] The light receiving element 51 of the light detecting member 50 is arranged opposite to the emission port 14 of the window portion 13. Light emitted from the emission port 14 of the window portion 13 is irradiated onto the light receiving element 51. In the example of the light emitting module 1 shown in the figure, the area of the light receiving surface of the light receiving element 51 is smaller than the area of the emission port 14 of the window portion 13.

[0194] Furthermore, the area of the light-receiving surface of the light-receiving element 51 can be the same as or larger than the area of the light-emitting port 14 of the window 13. The larger the light-receiving surface area of the light-receiving element 51, the wider the range of light reception. On the other hand, the smaller the light-receiving surface area of the light-receiving element 51, the faster the response speed. In the illustrated example of the light-emitting module 1, the response speed is superior to the amount of light received.

[0195] <Third embodiment>

[0196] Next, a light emitting module 3 according to a third embodiment will be described. Figures 15 to 19 This is a diagram for explaining an exemplary embodiment of the light emitting module 3 . Figure 15 It is a perspective view of the light emitting module 3 . Figure 16 3 is a top view of the light emitting module 3 . Figure 17 yes Figure 16 Cross-sectional view at section line XVII-XVII. Figure 18 It will be Figure 17 An enlarged view of a portion of the window portion 13 surrounded by a dotted line in the cross-sectional view of FIG. Figure 19 This is a cross-sectional view showing a state where the light detection element 50 is connected to the window portion 13 as in the light emitting module 2 according to the second embodiment.

[0197] also, Figure 16 The cross-sectional view at the X-X section line is Figure 10 Likewise. In addition, Figure 19 The shaded area in FIG represents the area through which the light emitted from the light emitting unit 20 passes. Figure 19 In the figure, shading is omitted for the cross sections of the components.

[0198] The light-emitting module 3 differs from the light-emitting modules of the previously described embodiments in that a light-guiding portion 141 having a lens member 145 is provided on the housing 10. Furthermore, the light-emitting module 3 differs from the previously described embodiments in that two or more light-guiding portions 141 having different structures are provided on the housing 10. Otherwise, the light-emitting modules can employ the same structure as the previously described embodiments.

[0199] The light-emitting module 3 includes one or more light guides 141 each having a lens member 145. The plurality of light guides 141 include light guides 141 having lens members 145 (first light guides) and light guides 141 without lens members 145 (second light guides). Furthermore, the light-emitting module 3 may not have a second light guide. For example, all light guides 141 may be first light guides.

[0200] (First light guide portion)

[0201] The lens member 145 included in the first light guide portion is, for example, a condenser lens that condenses light incident on the window portion 13. Alternatively, it may be a diffuser lens or a collimator lens, for example, depending on the purpose or application.

[0202] In the first light guide portion, a lens component 145 is provided on the incident surface side of the light-entering window portion 13. Furthermore, in the first light guide portion, a filter 144 is connected to the incident surface side of a light guide component 142 that guides light toward the emission port 14, and a lens component 145 is connected to the incident surface side of the filter 144. Light passing through the lens component 145 is focused toward the emission port 14 along the light guide path formed by the light guide component 142. The light passing through the lens component 145 is focused at a point on the emission port 14 or outside the housing 10.

[0203] (Second light guide portion)

[0204] As the second light guide portion, the light guide portion 141 described in the light emitting module 1 of the first embodiment can be used.

[0205] Comparing the first light guide portion and the second light guide portion, the lens surface of the lens component 145 of the first light guide portion is larger than the incident surface of the second light guide portion. The area of the emission port 14 is larger in the first light guide portion than in the second light guide portion. Furthermore, the area of the incident surface of light in the window portion 13 is larger in the first light guide portion than in the second light guide portion. Furthermore, the light guide path formed by the light guide component 142 is larger in the first light guide portion than in the second light guide portion. The first light guide portion can ensure a larger area for light to pass through than the second light guide portion.

[0206] (Light emitting module 3)

[0207] In the light-emitting module 3, the first light guide is provided in the window portion 13 on the second side surface. Furthermore, the plurality of windows 13 provided on the second side surface include the window portion 13 provided with the first light guide. Furthermore, the plurality of windows 13 provided on the second side surface include the window portion 13 provided with the second light guide.

[0208] In the example of the light emitting module 3 shown in the figure, a first light guide is provided in the window 13 for extracting light transmitted through the optical member 30 having a high reflectivity over the entire specific wavelength range for light in the specific wavelength range from the light emitting unit 20 .

[0209] In addition, in the example of the light-emitting module 3 shown in the figure, a second light-guiding portion is provided in the window portion 13 for extracting light transmitted through the optical component 30 having high reflectivity in a portion of a specific wavelength range and high transmittance in other portions relative to the light in a specific wavelength range from the light-emitting unit 20.

[0210] In the illustrated example of the light-emitting module 3, a first light guide is provided for the window 13 for extracting light emitted from one or more light-emitting elements, and a second light guide is provided for the window 13 for extracting light that has undergone wavelength conversion by the wavelength conversion member 26. Therefore, one first light guide and two second light guides are provided in the housing 10.

[0211] For example, as in the light emitting module 2 of the second embodiment, when the light receiving surface of the light receiving element 51 is smaller than the emission port 14 of the window portion 13, the amount of light irradiated to the light receiving surface can be increased by providing the first light guide portion to focus light on the light receiving surface (see Figure 19 Furthermore, the light receiving sensitivity of the light receiving element 51 can be expected to be further improved by providing the second light guide portion in the second window portion of the light emitting unit 20 where less light is extracted.

[0212] In the illustrated example of the light-emitting module 3, the light focused by the lens component 145 of the first light-guiding portion is set at a focal point outside the housing 10. For example, as shown in the enlarged view, if a light detection component 50 is provided outside the housing 10, the focal point can be set on the light-receiving surface of the light-receiving element 51 of the light detection component 50. This allows the light-receiving element 51 to efficiently receive the collimated light incident on the window 13.

[0213] <Fourth embodiment>

[0214] Next, a light emitting module 4 according to a fourth embodiment will be described. Figures 20 to 22 This is a diagram for explaining an exemplary embodiment of the light emitting module 4 . Figure 20 It is a perspective view of the light emitting module 4 . Figure 21 It is a top view of the light emitting module 4 . Figure 22 It is a side view of the light emitting module 4 .

[0215] The light emitting module 4 is different from the light emitting module of the above-described embodiment in that it includes a plurality of wirings 70, a plurality of connectors 60, and a base plate 80. Otherwise, the same structure as that of the light emitting module of the above-described embodiment can be employed.

[0216] (Wiring 70)

[0217] For example, flexible printed circuits (FPCs) can be used for wiring 70. Furthermore, wiring 70 is thin, film-like, and flexible. Therefore, even when deformed and bent, it maintains electrical connection. Furthermore, wiring 70 has a terminal at its tip.

[0218] (Connector 60)

[0219] The connector 60 includes a first connector portion 61 and a second connector v, each connected to a terminal. The first connector portion 61 and the second connector v face each other. The first connector portion 61 and the second connector portion 62 are electrically connected via a conductive portion 63 .

[0220] Furthermore, when viewed from above parallel to the mounting surface of the mounting connector 60, the first connector portion 61 is arranged parallel to a direction (fifth direction) perpendicular to the direction (fourth direction) in which the conductive portion 63 connects the opposing first connector portion 61 and second connector portion 62. Furthermore, the second connector v is arranged parallel to the fifth direction.

[0221] Furthermore, the first connector portion 61 and the second connector portion 62 have rectangular shapes elongated in the fifth direction when viewed from above parallel to the mounting surface of the mounting connector 60. Furthermore, the length of the first connector portion 61 in the fifth direction is greater than the length of the second connector portion 62 in the fifth direction.

[0222] The plurality of connectors 60 include two connectors 60 having different lengths of conductive portions 63 connecting the first connector portion and the second connector portion. The difference in length of the conductive portions 63 between the two connectors 60 is greater than the length of the first connector portion 61 in the fourth direction.

[0223] (Base plate 80)

[0224] The base plate 80 has a flat plate shape. The base plate 80 is formed of, for example, a glass epoxy plate. Alternatively, it may be formed of an aluminum plate.

[0225] (Light emitting module 4)

[0226] In the light-emitting module 4, a base plate 80 is disposed on the heat sink 40. In a plan view, the base plate 80 is disposed opposite the side surface of the heat sink 40 on which the light-emitting device 21 is mounted. In a plan view, a straight line passing through the side surface of the heat sink 40 is parallel to the side of the base plate 80 opposite the side surface.

[0227] In a plan view, the distance between the side surface of the heat sink 40 and the base plate 80 is at least half the length of the shortest wire 70 among the plurality of wires 70, and at least half the length of the longest wire 70 among the plurality of wires 70, and is shorter than the length of the shortest wire 70 among the plurality of wires 70. By arranging the wires 70 at this distance, the plurality of wires 70 can be stably connected.

[0228] The plurality of connectors 60 are arranged on the upper surface of the light emitting module 4. Furthermore, the plurality of connectors 60 are arranged on the heat sink 40. Furthermore, the plurality of connectors 60 are mounted on a base plate 80. Alternatively, the base plate 80 may be omitted and the light emitting module 4 may be mounted on the upper surface of the heat sink 40. In this case, the light emitting module 4 may not have the base plate 80.

[0229] The plurality of connectors 60 are arranged so that the first connector 61 of the first connector 61 and the second connector 62 is closer to the light emitting device 21. The first connector 61 has its terminal connection port facing the second side surface, while the second connector 62 has its terminal connection port facing the opposite direction.

[0230] The plurality of connectors 60 are arranged in parallel on the heat sink 40. One light emitting device 21 corresponds to one connector 60, and the plurality of connectors 60 are arranged so that the first connector portion 61 of one connector 60 and the connection portion 23 of one light emitting device 21 face each other.

[0231] Adjacent connectors 60 in the array have different lengths of conductive portions 63. Furthermore, adjacent connectors 60 are arranged with their first connector portions 61 offset in the fourth direction. That is, the first connector portions 61 of adjacent connectors 60 are not arranged on a straight line parallel to the fifth direction.

[0232] Therefore, the distance between the first connector portion 61 of one of the adjacent connectors 60 and the connection portion 23 of the light emitting device 21 corresponding to that connector 60 is longer than the distance between the first connector portion 61 of the other connector 60 and the connection portion 23 of the light emitting device 21 corresponding to that connector 60. Furthermore, the difference in these distances is at least greater than the length of the first connector portion 61 in the fourth direction.

[0233] On the other hand, the adjacent connectors 60 are arranged so that the second connector portions 62 are not offset in the fourth direction. That is, the second connector portions 62 of the adjacent connectors 60 are arranged on a straight line parallel to the fifth direction.

[0234] Therefore, the distance between the second connector portion 62 of one connector 60 among adjacent connectors 60 and the connection portion 23 of the light-emitting device 21 corresponding to the connector 60 is the same as the distance between the second connector portion 62 of another connector 60 and the connection portion 23 of the light-emitting device 21 corresponding to the connector 60, or the difference between the distances is at least smaller than the length of the second connector portion 62 in the fourth direction.

[0235] In terms of length in the fifth direction, the first connector portion 61 is longer than the second connector portion 62. Therefore, by arranging them in this way, the plurality of connectors 60 can be arranged at shorter intervals.

[0236] The interval between adjacent connectors 60 is shorter than half the length in the fifth direction of the first connector portion 61 and half the length in the fifth direction of the second connector portion 62. As the interval is shortened, the area for arranging the plurality of connectors 60 becomes smaller.

[0237] The multiple connectors 60 of the light-emitting module 4 include one or more first connectors and one or more second connectors. Furthermore, the number of first connectors and the number of second connectors are equal. For example, the illustrated light-emitting module 4 includes six connectors 60, including three first connectors and three second connectors. Furthermore, the number of first connectors and the number of second connectors are equal to the number of light-emitting units 20.

[0238] The wiring 70 is connected to the corresponding light-emitting device 21 and the connector 60. The plurality of wirings 70 electrically connect the plurality of light-emitting devices 21 and the plurality of connectors 60. The terminals of the wiring 70 are connected to the first connector portion 61 of the connector 60. Furthermore, the wiring 70 is connected to the connection portion 23 of the light-emitting device 21. For example, the wiring 70 is connected to the first surface (wiring mounting surface) of the connection portion 23.

[0239] In the light emitting module 4, the staggered arrangement of the first connectors 61 achieves miniaturization, while the alignment of the second connectors 62 facilitates connection to external terminals. This reduces the design burden when manufacturing a device incorporating the light emitting module 4.

[0240] The light emitting module 4 can be said to be easy to handle in that electrical connection to each light emitting device 21 can be easily made by providing a connector and connecting the connector.

[0241] <Fifth embodiment>

[0242] Next, a light emitting module 5 according to a fifth embodiment will be described. Figure 23 and Figure 24 This is a diagram for explaining an exemplary embodiment of the light emitting module 5 . Figure 23 It is a perspective view of the light emitting module 5 . Figure 24 3 is a top view of the light emitting module 5 .

[0243] The light-emitting module 5 of the fifth embodiment, like the light-emitting module 4 of the fourth embodiment, is another example of a light-emitting module capable of reducing the area required for arranging multiple connectors 60. Furthermore, the light-emitting module 5 of the fifth embodiment differs from the light-emitting module 4 of the fourth embodiment in that this is achieved using multiple connectors 60 having conductive portions 63 of the same length.

[0244] In the light-emitting module 5, when viewed from above, the plurality of connectors 60 are alternately arranged along the fifth direction in two regions separated by a straight line extending along the fifth direction. Of the two regions, the connector 60 arranged in the region closer to the light-emitting device 21 is arranged with its second connector portion 62 closer to the boundary line, while the connector 60 arranged in the region farther from the light-emitting device 21 is arranged with its first connector portion 61 closer to the boundary line.

[0245] In the light emitting module 5, one base plate 80 is prepared for one connector 60, and the same number of base plates 80 as the number of connectors 60 is arranged. Alternatively, a plurality of connectors 60 may be arranged on one base plate 80, or the connectors 60 may be mounted on the heat sink 40 without the base plate 80.

[0246] By using the same connector 60 in this way, common parts can be used, and the manufacturing process of the light emitting module can be simplified.

[0247] The above describes the embodiment of the present invention, but the light-emitting device of the present invention is not strictly limited to the light-emitting device of the embodiment. That is, the present invention is not impossible to implement if it is not limited to the appearance and structure of the light-emitting device disclosed in the embodiment. In addition, it is not necessary to fully possess all the constituent elements, but they can be appropriately applied. For example, if a part of the constituent elements of the light-emitting device disclosed in the embodiment is not described in the technical solution, the invention described in the technical solution is appropriately applied based on the recognition of the design freedom of those skilled in the art such as substitution, omission, deformation of shape, and change of material.

[0248] Industrial applicability

[0249] The light-emitting device described in each embodiment can be used for medical light sources such as endoscopes, projectors, lighting, displays, and the like.

[0250] Description of Reference Numerals

[0251] 1, 2, 3, 4, 5 light-emitting modules

[0252] 10 Frame

[0253] 11 base

[0254] 110 Configuration Area

[0255] 112, 114 upper surface

[0256] 12 cover

[0257] 121, 123 upper surface

[0258] 13 Window

[0259] 14 ejection port

[0260] 140 light-transmitting components

[0261] 141 Light guide

[0262] 142 light guide components

[0263] 143 Connecting parts

[0264] 144 filters

[0265] 145 lens components

[0266] 15 connection holes

[0267] 20 light-emitting units

[0268] 21 Lighting Device

[0269] 22. Luminous part

[0270] 23 Connection

[0271] 24 Optical components (condenser lens)

[0272] 25 Optical components (diffuser plate)

[0273] 26. Wavelength conversion component (phosphor wheel)

[0274] 261 wavelength conversion unit

[0275] 262 Conversion Control Unit

[0276] 27 Protective components

[0277] 271 Connection

[0278] 272 Protection Department

[0279] 28 Optical components (collimating lens)

[0280] 30 Optical components (dichroic mirror)

[0281] 40 Radiator

[0282] 50 light detection components

[0283] 51 light receiving element

[0284] 52 Connecting parts

[0285] 60 connector

[0286] 61 First connector part

[0287] 62 Second connector part

[0288] 63 Conductive section

[0289] 70 Wiring (Flexible Circuit Board)

[0290] 80 base plate

Claims

1. A light-emitting module comprising: a first light-emitting unit having one or more first light-emitting elements and emitting a first light; a second light emitting unit having one or more second light emitting elements, emitting light having a different peak wavelength from the first light, namely, second light; a first optical component that reflects a portion of the first light and transmits a portion thereof; a second optical component that reflects a portion of the second light and transmits a portion thereof, a frame, which surrounds the first light-emitting unit, the second light-emitting unit, the first optical component, and the second optical component; The frame has a first window portion for taking out the first light and the second light traveling along a prescribed direction via the first optical component and the second optical component, a second window portion for taking out the first light traveling along a direction different from the prescribed direction via the first optical component, and a third window portion for taking out the second light traveling along a direction different from the prescribed direction via the second optical component.

2. The light emitting module according to claim 1, wherein: The first light emitting unit includes the plurality of first light emitting elements, a condensing lens for condensing light emitted from the plurality of first light emitting elements, a wavelength conversion member into which the condensed light is incident, and a collimating lens for collimating the first light emitted from the wavelength conversion member.

3. The light emitting module according to claim 1 or 2, wherein: The second light emitting unit includes a plurality of second light emitting elements, a condenser lens for condensing the second light emitted from the plurality of second light emitting elements, a diffuser plate for diffusing the condensed second light, and a collimator lens for collimating the diffused second light.

4. The light emitting module according to any one of claims 1 to 3, wherein: The frame includes: a base on which the first light-emitting unit, the second light-emitting unit, the first optical component and the second optical component are arranged; and a cover that surrounds the first light-emitting unit, the second light-emitting unit, the first optical component and the second optical component arranged on the base and has the first window portion, the second window portion and the third window portion.

5. The light emitting module according to claim 4, wherein: A first light detecting unit is provided for detecting the first light emitted from the second window portion. The second window is provided between the first light detecting element and the first light emitting unit.

6. The light emitting module according to claim 4 or 5, wherein: A second light detecting unit is provided for detecting the second light emitted from the third window. The third window is provided between the second light detecting component and the second light emitting unit. The cover has the first window portion on a first surface, and has the second window portion and the third window portion on a second surface that is different from the first surface.

7. The light emitting module according to claim 6, wherein: The area of the emission port of the first window portion serving as a light exit is larger than either the area of the emission port of the second window portion serving as a light exit or the area of the emission port of the third window portion serving as a light exit.

8. The light emitting module according to any one of claims 1 to 7, wherein: The third window portion includes a condenser lens for condensing light incident on the third window portion. The second window portion does not have a condenser lens.

9. The light emitting module according to any one of claims 1 to 8, wherein: The frame takes out the first light reflected by the first optical component and the second light reflected by the second optical component from the first window, takes out the first light transmitted through the first optical component from the second window, and takes out the second light transmitted through the second optical component from the third window.

10. The light emitting module according to any one of claims 1 to 9, wherein: A plurality of connectors are provided, each of which has a first connector portion, a second connector portion, and a conductive portion connecting the first connector portion and the second connector portion. In the plurality of connectors, the first connector portion is longer than the second connector portion in a direction perpendicular to the direction in which the conductive portion connects the first connector portion and the second connector portion. The plurality of connectors include a first connector and a second connector having different lengths of the conductive portions. The first connector and the second connector are arranged side by side, and the first connector parts of the respective connectors are staggered in the direction in which the conductive parts are connected.

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