Light emitting module

Abstract

Provided is a light-emitting module having a high degree of freedom of color modulation of light. The light-emitting module includes: a plurality of light-emitting parts; an optical member that includes at least one first region capable of extracting light of a first chromaticity and at least one second region capable of extracting light of a second chromaticity different from the first chromaticity, and that transmits or passes through light emitted from the plurality of light-emitting units (1); a variable mechanism that changes the distance between the plurality of light-emitting parts and the optical member; and a first lens on which light transmitted or passed through the optical member is incident, in which either one of the first region and the second region is provided so as to form a pair with each of the plurality of light-emitting parts, and the variable mechanism changes the distance between the light-emitting parts and the optical member in a direction along the central axis of the first lens.

Description

Technical Field

[0001] The present disclosure relates to a light emitting module. Background Art

[0002] There is known a light emitting module that uses an optical component for performing wavelength conversion on light from a light emitting portion to adjust the color.

[0003] In addition, a structure is disclosed in which the thickness of the sealing resin directly above the multiple groups of light-emitting portions is different from each other, whereby when each of the multiple groups of light-emitting portions is caused to emit light separately, the chromaticity of the light emitted from the sealing resin is different from each other (for example, see patent document 1).

[0004] [Reference document]

[0005] [Patent document]

[0006] [Patent Document 1] (Japan) Patent Publication No. 2017-120897 Summary of the invention

[0007] [Technical issues to be solved]

[0008] However, in the configuration (structure) of Patent Document 1, since each of the plurality of groups of light emitting units is caused to emit light separately, the degree of freedom in color adjustment of the light emitting module is low.

[0009] An object of the present disclosure is to provide a light emitting module with a high degree of freedom in adjusting the color of light.

[0010] [Technical solution]

[0011] A light emitting module according to one embodiment of the present disclosure has:

[0012] A plurality of light emitting parts;

[0013] an optical component including at least one first region capable of extracting light of a first chromaticity and at least one second region capable of extracting light of a second chromaticity different from the first chromaticity, and allowing the light emitted from the plurality of light emitting portions to transmit or pass therethrough;

[0014] A variable mechanism for changing the distance between the plurality of light emitting units and the optical component; and

[0015] a first lens, into which the light transmitted or passing through the optical component enters,

[0016] in,

[0017] Either the first region or the second region is provided to form a pair with each of the plurality of light emitting units.

[0018] The variable mechanism changes the distance between the light emitting unit and the optical member in a direction along the central axis of the first lens.

[0019] [Beneficial Effects]

[0020] According to one embodiment of the present disclosure, a light emitting module having a high degree of freedom in adjusting the color of light can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] [ Figure 1 ]A plan view illustrating the structure of the light emitting module according to the first embodiment.

[0022] [ Figure 2 ]along Figure 1 Sectional view of the II cutting line.

[0023] [ Figure 3 ]A top view of multiple light-emitting portions observed from the first lens side.

[0024] [ Figure 4 ]along Figure 3 A cross-sectional view taken along the III-III cutting line.

[0025] [ Figure 5 ]A plan view illustrating the structure of the filter according to the first embodiment.

[0026] [ Figure 6 ]along Figure 5 Cross-sectional view along the VV cutting line.

[0027] [ Figure 7 ] After the filter is moved Figure 2 A cross-sectional view illustrating an example of a light emitting module.

[0028] [ Fig. 8A ] represents the first figure of the light transmission filter.

[0029] [ Figure 8B ] Figure 2 shows the light transmission filter.

[0030] [ Fig. 9A ] Schematic diagram of a filter comprising multiple first regions and multiple second regions.

[0031] [ Fig. 9B ]The first area is a schematic diagram of an example of the structure of a filter with a through hole.

[0032] [ Fig. 10A ]Distance d, distance δ 1 Schematic diagram of the relationship between the directivity half-value angle θ.

[0033] [ Fig. 10B ]Distance d, distance δ 2, schematic diagram of the relationship between the directivity half-value angle θ and the area width p.

[0034] [ Fig.11 ] A cross-sectional view illustrating the structure of the light emitting module according to the second embodiment.

[0035] [ Fig.12 ] After the wavelength conversion component is moved Fig.11 A cross-sectional view illustrating an example of a light emitting module.

[0036] [ Fig.13 ] A cross-sectional view illustrating the structure of a wavelength conversion component of a modified example.

[0037] [ Fig.14 ] A cross-sectional view illustrating the structure of the light emitting module according to the third embodiment.

[0038] [ Fig.15 ] After the filter and the plurality of second lenses are moved integrally Fig.14 A cross-sectional view illustrating an example of a light emitting module.

[0039] [ Fig.16A ] represents the first figure of the light transmission filter and multiple second lenses.

[0040] [ Fig. 16B ] Figure 2 shows a light transmission filter and multiple second lenses.

[0041] [ Fig.17 ] A cross-sectional view illustrating the structure of the light emitting module according to the fourth embodiment.

[0042] [ Fig.18 ] A cross-sectional view illustrating the structure of the light emitting module of the fifth embodiment.

[0043] [ Fig.19 ]along Fig.19 Sectional view along the XIX-XIX cutting line. DETAILED DESCRIPTION

[0044] The following is a description of the method for implementing the invention in conjunction with the accompanying drawings. It should be noted that in the following description, parts with the same reference numerals appearing in multiple drawings represent the same or equivalent parts or components. Repeated descriptions of the same or equivalent parts or components are appropriately omitted. As a sectional view, there is a case where only an end view of a section (cross section) is shown.

[0045] The embodiments shown below illustrate light-emitting modules for embodying the technical concept of the present invention, and the present invention is not limited to the embodiments described below. Unless otherwise specified, the size, material (material), shape, relative configuration, etc. of the constituent components described below are intended for illustration only and are not intended to limit the scope of the present invention. In addition, for the sake of clarity of explanation, the size, positional relationship, etc. of the components shown in the drawings are exaggerated.

[0046] In the drawings shown below, directions are sometimes represented by an X-axis, a Y-axis, and a Z-axis; however, the X direction along the X-axis represents an arbitrary direction, the Y direction along the Y-axis represents a direction substantially orthogonal to the X direction, and the Z direction along the Z-axis represents a direction substantially orthogonal to both the X direction and the Y direction.

[0047] In addition, in the X direction, the direction pointed by the arrow is called the +X direction, and the opposite direction of the +X direction is called the -X direction. In the Y direction, the direction pointed by the arrow is called the +Y direction, and the opposite direction of the +Y direction is called the -Y direction. In the Z direction, the direction pointed by the arrow is called the +Z direction, and the opposite direction of the +Z direction is called the -Z direction. In the embodiment, for each of the multiple light-emitting parts of the light-emitting module, as an example, light is irradiated to the +Z direction side. In each figure, there is a case where the light emitted from the light-emitting part is represented by an arrow such as a solid line or a dotted line. In addition, the top view in the terminology of the embodiment refers to a view obtained by observing the light-emitting module from the +Z direction side. However, these do not limit the direction of the light-emitting module when it is used, and the direction of the light-emitting module can be any direction. In addition, in this embodiment, the surface of the object when observed from the +Z direction side is called the "upper surface" (note: "" is equivalent to ""), and the surface of the object when observed from the -Z direction side is called the "lower surface".

[0048] The optical axes of the plurality of light emitting units and the central axis of the first lens are along the Z axis. In the embodiments described below, along the X axis, Y axis, and Z axis means including a case where a certain object has an inclination within a range of ±10° with respect to these axes.

[0049] The light-emitting module of the embodiment is used for various purposes such as lighting and light irradiation. The light-emitting module includes a plurality of light-emitting parts and an optical component including at least one first region capable of extracting light of a first chromaticity and at least one second region capable of extracting light of a second chromaticity different from the first chromaticity and allowing light emitted from the plurality of light-emitting parts to pass through or be transmitted. In addition, the light-emitting module also includes a variable mechanism for changing the distance between the plurality of light-emitting parts and the optical component and a first lens for irradiating the light transmitted or passed through the optical component. The variable mechanism changes the distance between the light-emitting part and the optical component in the direction along the central axis of the first lens.

[0050] As for the light of different colors emitted from each of the multiple light-emitting units that transmits or passes through the first area and the second area, the optical component adjusts (adjusts) the ratio of the light amounts and emits them. In this specification, adjusting the ratio of the light amounts of light of different colors refers to the situation where light of different colors is mixed. In the embodiment, a variable mechanism is used to change the distance between the multiple light-emitting units and the optical component, and the chromaticity of the light mixed by the optical component is arbitrarily variable, thereby providing a light-emitting module with a high degree of freedom in light color adjustment. Here, color adjustment refers to adjusting the color of light.

[0051] It should be noted that, in this specification, a light-transmitting optical component (for example, the first region or the second region) means that the light emitted from the light-emitting portion is incident on the interior of the optical component and is emitted from the optical component in a manner of being wavelength-converted or not. In the case of a light-transmitting optical component, a region where the light emitted from the light-emitting portion is intentionally incident on the optical component and emitted is sometimes referred to as a transmission portion. In addition, light-passing optical components (for example, the first region or the second region) means that the light emitted from the light-emitting portion passes through a through hole (through hole) provided in the optical component. In the case of a light-passing optical component, a region where the light emitted from the light-emitting portion is intentionally not incident on the optical component but is passed through the through hole is sometimes referred to as a passing portion.

[0052] [First embodiment]

[0053] (Overall Configuration Example of Light Emitting Module 100)

[0054] See also Figure 1 and Figure 2 The configuration of the light emitting module 100 according to the first embodiment will be described. Figure 1 and Figure 2 is a diagram showing an example of the structure of the light emitting module 100. Figure 1 is a top view, Figure 2 For along Figure 1 Sectional view of the II cutting line.

[0055] like Figure 1 and Figure 2 As shown, the light emitting module 100 includes a plurality of light emitting units 1 , an optical component 2 , a variable mechanism 3 , and a first lens 4 .

[0056] The plurality of light emitting units 1 are arranged in a grid pattern along the X and Y directions, and are mounted on the surface (in other words, the upper surface) on the +Z direction side of the light emitting unit mounting substrate 5. The light emitting unit mounting substrate 5 is a plate-like component having a substantially rectangular shape in a plan view, and is a substrate having wiring (wiring) on ​​which light emitting elements, various electrical components, etc. can be mounted.

[0057] A frame 6 is provided on the surface on the +Z direction side of the light emitting unit mounting substrate 5, and a plurality of light emitting units 1, a filter 2 as an optical component, a variable mechanism 3, and a first lens 4 are accommodated in the frame 6. The first lens 4 is arranged so that the convex portion of the first lens 4 passes through an opening 61 of the frame 6 and is exposed from the +Z direction side.

[0058] Each of the plurality of light emitting units 1 is formed in a substantially rectangular shape in a plan view. Each of the plurality of light emitting units 1 has a light emitting surface 11 and emits light toward the filter 2 provided on the +Z direction side of the plurality of light emitting units 1 .

[0059] The light emitting surface 11 refers to the main light extraction surface in the light emitting unit 1. The light emitting unit 1 may use an LED (Light Emitting Diode) or the like. As described later, the light emitted by the light emitting unit 1 may be white light or monochromatic light. By selecting the light emitting unit 1 according to the intended use of the light emitting module 100, the wavelength and / or chromaticity of the light emitted by the light emitting unit 1 may be appropriately selected.

[0060] The optical filter 2 includes a plurality of first regions 21 capable of extracting light of a first chromaticity and a second region 22 capable of extracting light of a second chromaticity different from the first chromaticity (see Figure 2 ), which is an example of an optical component that transmits light emitted from the plurality of light emitting units 1. The filter 2 is provided between the plurality of light emitting units 1 and the first lens 4.

[0061] In this embodiment, the plurality of first regions 21 are provided to be paired with the plurality of light emitting units 1 , respectively. However, the present invention is not limited thereto, and either the first region 21 or the second region 22 may be provided to be paired with the plurality of light emitting units 1 .

[0062] Figure 2 In the state shown, light emitted from each of the plurality of light emitting sections 1 passes through the paired first regions 21 and then enters the first lens 4 provided on the +Z direction side of the optical filter 2. Most of the light emitted from each of the plurality of light emitting sections 1 does not enter the second region 22 of the optical filter 2 and therefore does not pass through the second region 22.

[0063] The variable mechanism 3 is a mechanism for changing the distance between the plurality of light emitting units 1 and the optical filter 2. In this embodiment, the variable mechanism 3 changes the distance between the light emitting unit 1 and the optical filter 2 in the Z direction along the central axis 41 of the first lens 4, thereby changing the chromaticity of the light mixed by the optical filter 2. It should be noted that Figure 2 In the illustrated first lens 4 , a central axis 41 of the first lens 4 substantially coincides with an optical axis of the first lens 4 .

[0064] The variable mechanism 3 includes a mover 31, a spring 32, and a support body 33. The mover 31 is movable in the Z direction and is connected to the support body 33 via the spring 32. The spring 32 has elasticity and can return the mover 31 to an initial position in the Z direction.

[0065] The variable mechanism 3 includes a driving unit such as a voice coil motor and an ultrasonic motor. The voice coil motor is a motor in which a mover 31 including a coil performs translational motion in a magnetic field generated by a magnet. The ultrasonic motor is a motor that converts the natural vibration generated in a metal elastic body into the translational motion of the mover 31 by using friction. The variable mechanism 3 moves the mover 31 along the Z direction by the driving force of the driving unit. However, the variable mechanism 3 is not limited to a configuration including a driving unit, and can be any configuration as long as the distance between the plurality of light emitting units 1 and the optical filter 2 can be changed in the direction along the central axis 41 of the first lens 4. For example, the variable mechanism 3 may also be a configuration in which the distance between the light emitting unit 1 and the optical filter 2 is changed manually by a person without including a driving unit, and then the optical filter 2 is fixed.

[0066] The mover 31 is a frame-shaped component having a substantially rectangular shape in a top view. The optical filter 2 is fixed inside the mover 31. The variable mechanism 3 can move the optical filter 2 along the Z direction by moving the mover 31 along the Z axis, thereby changing the distance between each of the plurality of light-emitting units 1 and the optical filter 2 along the Z direction.

[0067] Figure 1 and Figure 2 The support body 33 illustrated in the figure is a frame-shaped member having a substantially rectangular shape in a plan view, but is not limited thereto, and the support body 33 may also have a substantially circular or polygonal shape in a plan view based on the plan view shape of the filter 2 .

[0068] The first lens 4 is a lens for incident light emitted from each of the plurality of light emitting units 1 and transmitted through the optical filter 2. In the present embodiment, the light transmitted through the optical filter 2 is irradiated from the light emitting surface side of the first lens 4 toward the +Z direction side.

[0069] In the present embodiment, the first lens 4 is a biconvex single lens, which includes a first convex surface 42 protruding toward the side of the plurality of light-emitting portions 1 and a second convex surface 43 protruding toward the opposite side of the plurality of light-emitting portions 1. The radius of curvature of the first convex surface 42 is greater than the radius of curvature of the second convex surface 43. In addition, the shape of the first lens 4 in the top view is formed into a substantially circular shape. However, the first lens 4 is not limited to a biconvex single lens, but may also be a concave lens, a meniscus lens, a lens group composed of a plurality of lenses, and the like. In addition, the size of the radius of curvature, the thickness of the lens, and the like may also be appropriately changed. In addition, the shape of the first lens 4 in the top view is not limited to a substantially circular shape, but may also be a substantially polygonal shape such as a substantially elliptical shape, a substantially triangular shape, or a substantially rectangular shape.

[0070] The first lens 4 has transparency (translucency) with respect to the light emitted from the light emitting unit 1, and is formed in a manner including at least one of a resin material such as polycarbonate resin, acrylic resin, silicone resin, epoxy resin, etc. and a glass material. It should be noted that the transparency here refers to the property of allowing more than 60% of the light from the light emitting unit 1 to be transmitted.

[0071] In this embodiment, the arrangement position of the light emitting unit 1 in the plan view and the irradiation position of the light emitted from the light emitting unit 1 through the first lens 4 have a point-symmetric positional relationship with respect to the central axis 41 of the first lens 4 .

[0072] For example, Figure 2 As shown, light Ln emitted from a light emitting portion 1n disposed on the -X direction side of the central axis 41 among the plurality of light emitting portions 1 is irradiated to an irradiation position T located on the +X direction side of the central axis 41 in the irradiation area S through the first lens 4. The light emitting portion 1n and the irradiation position T have a point-symmetrical positional relationship. Figure 2 In the X direction, the distance from the light emitting portion 1n to the central axis 41 and the distance from the irradiation position T to the central axis 41 are substantially equal. It should be noted that the irradiation area S may be a surface of a screen, a wall, etc., or a virtual plane in space. In addition, in the X direction, the distance from the light emitting portion 1n to the central axis 41 and the distance from the irradiation position T to the central axis 41 may not be equal.

[0073] The frame 6 has an opening 61 and a holding portion 62. The opening 61 is formed in a substantially circular shape in a plan view. The opening 61 is formed larger than the outer edge of the second convex surface 43 in a plan view so that the second convex surface 43 of the first lens 4 is exposed. The surface of the holding portion 62 on the -Z direction side is fixed to the surface of the light emitting portion mounting substrate 5 on the +Z direction side by an adhesive member or the like.

[0074] The frame 6 preferably has light shielding properties. For example, it is preferably formed of a resin material or the like containing fillers such as a light reflecting member or a light absorbing member. This can improve the contrast of the irradiated light of the light emitting module 100 by suppressing stray light.

[0075] The shape of the frame body 6 is not limited to the above-mentioned shape, and a frame body 6 having a substantially circular shape, a substantially elliptical shape, or a substantially polygonal shape in a plan view may be used.

[0076] (Configuration Example of Light Emitting Unit 1)

[0077] See also Figure 3 and Figure 4 The configuration of the plurality of light emitting units 1 will be described. Figure 3 is a top view of a plurality of light emitting units 1, Figure 4 is along Figure 3 A cross-sectional view taken along the III-III cutting line.

[0078] like Figure 3 and Figure 4 As shown, in the top view, the plurality of light emitting units 1 include 16 light emitting units 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1k, 1m, 1n, 1o, 1p and 1q arranged in a grid pattern along the X direction and the Y direction. The X direction is an example of a lateral direction (horizontal direction), and the Y direction is an example of a longitudinal direction (vertical direction).

[0079] The light-emitting portion 1a includes a light-emitting surface 11a, the light-emitting portion 1b includes a light-emitting surface 11b, the light-emitting portion 1c includes a light-emitting surface 11c, the light-emitting portion 1d includes a light-emitting surface 11d, the light-emitting portion 1e includes a light-emitting surface 11e, the light-emitting portion 1f includes a light-emitting surface 11f, and the light-emitting portion 1g includes a light-emitting surface 11g. The light-emitting portion 1h includes a light-emitting surface 11h, the light-emitting portion 1i includes a light-emitting surface 11i, the light-emitting portion 1j includes a light-emitting surface 11j, the light-emitting portion 1k includes a light-emitting surface 11k, the light-emitting portion 1m includes a light-emitting surface 11m, the light-emitting portion 1n includes a light-emitting surface 11n, the light-emitting portion 1p includes a light-emitting surface 11p, and the light-emitting portion 1q includes a light-emitting surface 11q. It should be noted that the light-emitting portion 1 and the light-emitting surface 11 overlap in the top view, so Figure 3 The reference numerals of the light emitting portion 1 and the light emitting surface 11 are described together.

[0080] The light-emitting surfaces 11a to 11q are preferably arranged to be located inside the first lens 4 (inside the outer shape (external shape) of the first lens 4) in a top view. Accordingly, the light emitted from the light-emitting surface 11 can be efficiently incident on the first lens 4, and the light extraction efficiency of the first lens 4 can be improved.

[0081] The distance d is the distance separating the centers of adjacent light emitting parts 1 in the plan view along the X direction. It should be noted that the distance d may also be the distance separating the centers of adjacent light emitting parts 1 in the plan view along the Y direction.

[0082] Figure 3 16 light emitting units 1 are illustrated in the figure in a grid arrangement along the longitudinal and transverse directions, but the arrangement and number of the light emitting units 1 are not limited thereto. The number of the light emitting units 1 only needs to be at least 2, and the arrangement and number of the light emitting units 1 can be appropriately changed according to the purpose of the light emitting module 100, etc.

[0083] like Figure 4 As shown, the light emitting unit 1 is arranged (mounted) in the following manner, that is, the surface on the +Z direction side is used as the light emitting surface 11, and the surface on the opposite side of the light emitting surface 11 is used as the mounting surface, and the mounting surface faces the surface on the +Z direction side of the light emitting unit mounting substrate 5.

[0084] The light emitting unit 1 of this embodiment includes a light emitting element 12 , a transparent member 14 provided on the +Z direction side of the light emitting element 12 , and a covering member 15 covering the side surfaces of the light emitting element 12 and the transparent member 14 except for the surface on the +Z direction side of the transparent member 14 .

[0085] The light emitting surface 11 of the present embodiment is, for example, a quadrilateral with a side of 100 μm or more and 1000 μm or less in a top view. In the present embodiment, the shape of the light emitting surface 11 in a top view is a substantially rectangular shape, but it may also be a substantially circular shape, a substantially elliptical shape, a substantially triangular shape, a substantially hexagonal shape, or other polygonal shape.

[0086] The light-emitting element 12 is a semiconductor element that emits light by applying a voltage. The light-emitting element 12 includes at least a semiconductor stack, and preferably has at least one pair of electrodes 13 with different polarities, for example, a p-side electrode and an n-side electrode, on the surface opposite to the upper surface of the light-emitting element 12. The light-emitting element 12 is, for example, a quadrilateral with a side of 50 μm or more and 1000 μm or less in a top view. The area or the length of one side of the light-emitting element 12 in a top view may be different from the area or the length of one side of the light-emitting surface 11 in a top view.

[0087] The semiconductor stack is preferably composed of various semiconductors such as III-V compound semiconductors and II-VI compound semiconductors. Nitride semiconductors are preferably used as the semiconductor material. Nitride semiconductors are mainly composed of the general formula In x Al y Ga 1-x-yN (0≤x, 0≤y, x+y≤1) represents a material that can emit short-wavelength light and can efficiently excite the wavelength conversion material contained in the transparent component 14 described later. As for the peak wavelength of light emission of the light-emitting element 12, from the perspective of luminous efficiency, excitation of the wavelength conversion material, and the color mixing relationship with the light emitted by it, it is preferably 400nm or more and 530nm or less, preferably 420nm or more and 490nm or less, and more preferably 450nm or more and 475nm or less. In addition, the material of the semiconductor can also use InAlGaAs semiconductors, InAlGaP semiconductors, etc. In the present embodiment, as the light-emitting element 12, a light-emitting module 100 using a light-emitting element that emits blue light is used as an example for description.

[0088] The transparent member 14 is a plate-like member having a substantially rectangular shape in a top view, and is provided so as to cover the upper surface of the light-emitting element 12. The transparent member 14 can be formed using an inorganic material such as a transparent resin material, ceramic, glass, etc. As the resin material, a thermosetting resin such as a silicone resin, a silicone-modified resin, an epoxy resin, an epoxy-modified resin, a phenolic resin, etc. can be used. Particularly suitable are silicone resins or modified resins thereof having good light resistance and heat resistance. It should be noted that the transparency here means that preferably more than 60% of the light from the light-emitting element 12 is transmitted.

[0089] In addition, the transparent component 14 can be constructed in a manner including the above-mentioned resin, light diffusion component and / or wavelength conversion substance. The wavelength conversion substance absorbs at least a portion of the primary light emitted from the light emitting element 12, and emits secondary light having a wavelength different from that of the primary light. As the transparent component 14 composed of resin and wavelength conversion substance, resin materials, ceramics, glass, etc. containing wavelength conversion substance, sintered bodies of wavelength conversion substance, etc. can be listed. In addition, the transparent component 14 can also have a resin layer containing wavelength conversion substance and / or light diffusion component on the surface of the -Z direction side of the molded body of resin, ceramics, glass, etc. In addition, a light diffusion layer containing resin, ceramics, glass, etc. can be provided continuously between adjacent light emitting parts 1 on the transparent component 14.

[0090] As the wavelength conversion material, for example, a yttrium aluminum garnet-based phosphor (for example, Y 3 (Al, Ga) 5 O 12 :Ce), lutetium aluminum garnet phosphors (for example, Lu 3 (Al, Ga) 5 O 12 :Ce), terbium aluminum garnet phosphors (for example, Tb 3 (Al, Ga) 5 O 12 :Ce), CCA-based phosphors (e.g., Ca10 (PO 4 ) 6 Cl 2 :Eu), SAE-based phosphors (e.g., Sr 4 Al 14 O 25 :Eu), chlorosilicate phosphors (e.g., Ca 8 MgSi 4 O 16 Cl 2 :Eu), nitride-based phosphors, fluoride-based phosphors, phosphors with a perovskite structure (for example, CsPb(F, Cl, Br, I) 3 ), quantum dot phosphors (e.g., CdSe, InP, AgInS 2 、AgInSe 2 、AgInGaS 2 or CuAgInS 2 ) etc. Examples of nitride-based phosphors include β-sialon-based phosphors (e.g., (Si, Al) 3 (O, N) 4 :Eu), α-sialon phosphors (e.g., Ca(Si,Al) 12 (O, N) 16 :Eu), SLA-based phosphors (e.g., SrLiAl 3 N 4 :Eu), CASN-based phosphors (e.g., CaAlSiN 3 :Eu), SCASN series phosphors (for example, (Sr, Ca)AlSiN 3 :Eu) etc., and examples of fluoride-based phosphors include KSF-based phosphors (e.g., K 2 SiF 6 :Mn), KSAF-based phosphors (e.g., K 2 (Si,Al)F 6 :Mn), MGF-based phosphors (e.g., 3.5MgO·0.5MgF 2 ·GeO 2 :Mn) etc. These phosphors are particles. In addition, one of these wavelength conversion substances may be used alone, or two or more of these wavelength conversion substances may be used in combination.

[0091] The KSAF-based phosphor may have a composition represented by the following formula (I).

[0092] M 2 [Si p Al q Mn r F s ] (I)

[0093] In formula (I), M represents an alkali metal and may include at least K. Mn may be a tetravalent Mn ion. p, q, r and s may satisfy 0.9≤p+q+r≤1.1, 0<q≤0.1, 0<r≤0.2 and 5.9≤s≤6.1. Preferably, 0.95≤p+q+r≤1.05 or 0.97≤p+q+r≤1.03, 0<q≤0.03, 0.002≤q≤0.02 or 0.003≤q≤0.015, 0.005≤r≤0.15, 0.01≤r≤0.12 or 0.015≤r≤0.1, and 5.92≤s≤6.05 or 5.95≤s≤6.025. For example, K 2 [Si 0.946 Al 0.005 Mn 0.049 F 5.995 ], K 2 [Si 0.942 Al 0.008 Mn 0.050 F 5.992 ], and K 2 [Si 0.939 Al 0.014 Mn 0.047 F 5.986 ] The composition represented by this KSAF-based phosphor can produce red light having high luminance (brightness) and a narrow half-value width of the emission peak wavelength.

[0094] In this embodiment, the light emitting unit 1 uses a blue light emitting element as the light emitting element 12, and the transparent member 14 contains a wavelength conversion material that converts the wavelength of light emitted from the light emitting element 12 into yellow, thereby emitting white light.

[0095] As the light diffusion member included in the transparent member 14 , for example, titanium oxide, barium titanate, aluminum oxide, silicon oxide, or the like can be used.

[0096] The cover member 15 is a member that covers the side surfaces of the light emitting element 12 and the transparent member 14, and directly or indirectly covers the side surfaces of the light emitting element 12 and the transparent member 14. The upper surface of the transparent member 14 is exposed from the cover member 15 to form the light emitting surface 11 of the light emitting portion 1. The cover member 15 can isolate adjacent light emitting portions 1.

[0097] In order to improve the light extraction efficiency, the cover member 15 is preferably formed of a member with high light reflectivity. For example, a resin material containing a light reflective substance such as a white pigment can be used for the cover member 15.

[0098] Examples of the light reflective material include titanium oxide, zinc oxide, magnesium oxide, magnesium carbonate, magnesium hydroxide, calcium carbonate, calcium hydroxide, calcium silicate, magnesium silicate, barium titanate, barium sulfate, aluminum hydroxide, aluminum oxide, zirconium oxide, and silicon oxide. It is preferred to use one of these alone or two or more of these in combination.

[0099] In addition, as the resin material, it is preferred to use a resin material having a thermosetting resin such as epoxy resin, epoxy modified resin, silicone resin, silicone modified resin, phenolic resin as the main component as the base material (parent material). It should be noted that, as required, the covering member 15 can also be composed of a member having transparency to visible light.

[0100] The light-emitting unit mounting substrate 5 is preferably configured to include wiring 51 disposed on at least one of the surface and the interior. In the light-emitting unit mounting substrate 5, the wiring 51 and at least one pair of positive and negative electrodes 13 of the light-emitting unit 1 are connected via a conductive adhesive member 52, thereby electrically connecting the light-emitting unit mounting substrate 5 and the light-emitting unit 1. It should be noted that the structure, size (dimensions), etc. of the wiring 51 of the light-emitting unit mounting substrate 5 can be set based on the structure and size of the electrode 13 of the light-emitting unit 1.

[0101] The light emitting unit mounting substrate 5 preferably uses an insulating material as a base material, and preferably uses a material that does not easily transmit the light emitted from the light emitting unit 1, external light, etc., and preferably uses a material having a certain strength. Specifically, the light emitting unit mounting substrate 5 can be formed by using a ceramic such as alumina, aluminum nitride, mullite, silicon nitride, phenolic resin, epoxy resin, polyimide resin, BT resin (bismaleimide triazine resin), polyphthalamide, etc. as a base material.

[0102] The wiring 51 may be made of at least one of copper, iron, nickel, tungsten, chromium, aluminum, silver, gold, titanium, palladium, rhodium, or an alloy thereof. In addition, from the perspective of wettability and / or light reflectivity of the conductive adhesive member 52, a layer of silver, platinum, aluminum, rhodium, gold, or an alloy thereof may be provided on the surface layer (surface layer) of the wiring 51.

[0103] (Filter 2)

[0104] See also Figure 5 and Figure 6 The structure of the optical filter 2 will be described. Figure 5 is a top view of the filter 2, Figure 6 is along Figure 5 Cross-sectional view along the VV cutting line.

[0105] like Figure 5 and Figure 6As shown, the optical filter 2 includes a plurality of first regions 21 that form pairs with the light emitting surface 11 of each of the plurality of light emitting sections 1 and a second region 22 that is provided around the first region 21 of the optical filter 2 in a plan view.

[0106] Figure 2 The plurality of first regions 21 shown are arranged in a grid pattern along the X direction and the Y direction. The optical filter 2 is fixed inside the mover 31 .

[0107] The optical filter 2 is a plate-shaped member made of a resin material such as silicone and / or a glass material. The first region 21 includes a transmission portion that transmits the light emitted from the light emitting portion 1. The transmission portion of this embodiment does not include a component such as a wavelength conversion material or a color filter that converts the wavelength of the light emitted from the light emitting portion 1. The second region 22 includes a color filter that transmits a portion of the wavelength of the light emitted from the light emitting portion 1.

[0108] The first region 21 has transparency with respect to the light emitted from the light emitting section 1, and basically does not absorb the light emitted from the light emitting section 1, or transmits the light emitted from the light emitting section 1 in a substantially non-reflective manner. Transparency here means the property of transmitting more than 60% of the light from the light emitting section 1. In this embodiment, since the light emitting section 1 emits white light, the first region 21 can extract white light. White is an example of the first chromaticity.

[0109] The light-emitting surface 11 is arranged inside the first region 21 in a top view. The region width p of the first region 21 along the X direction is greater than the light-emitting surface width q of the light-emitting surface 11 along the X direction. In addition, the region width p of the first region 21 along the Y direction is greater than the light-emitting surface width q of the light-emitting surface 11 along the Y direction. Figure 5 In the X direction and Y direction shown, the region width p of the first region 21 is approximately equal, and the light-emitting surface width q of the light-emitting surface 11 is also approximately equal. The inner side of the first region 21 refers to the boundary including the first region 21 and the second region 22. In other words, the outer edge of the light-emitting surface 11 in the top view can be basically completely overlapped with the outer edge of the first region 21. It should be noted that the region width p and the light-emitting surface width q can also be the widths along the Y direction respectively. In addition, Figure 5 In order to illustrate the positional relationship between the light emitting surface 11 and the first region 21 , the light emitting surface 11 is shown in the top view of the optical filter 2 . However, the light emitting surface 11 is not a component included in the optical filter 2 .

[0110] The second region 22 transmits a portion of the light emitted from the light emitting section 1 by absorbing or reflecting a portion of the light emitted from the light emitting section 1. The color filter included in the second region 22 is a component that uses a resin such as silicone and / or glass as a base material and includes an inorganic compound containing a metal oxide, a pigment substance composed of an organic compound, and / or the above-mentioned wavelength conversion substance. The pigment substance is a component that absorbs at least a portion of the primary light emitted from the light emitting section 1 and transmits secondary light including a portion of the wavelengths included in the primary light.

[0111] In this embodiment, the second region 22 extracts light of amber chromaticity as part of the light. Amber belongs to the orange series, that is, the so-called light bulb color. Amber is an example of the second chromaticity.

[0112] It should be noted that, in the present embodiment, although the optical filter 2 is exemplified as having a substantially rectangular shape in the top view, the present invention is not limited thereto, and the shape of the optical filter 2 in the top view may be, for example, a substantially circular shape, a substantially polygonal shape, etc. In addition, the optical filter 2 may not be a plate-shaped member, but may be, for example, a sheet-shaped member. In addition, the shapes of the first region 21 and the second region 22 in the top view may each be a substantially circular shape, a substantially polygonal shape, etc.

[0113] (Example of Color Adjustment of Light Emitting Module 100)

[0114] See also Figures 7 to 8B The color adjustment of the light emitting module 100 will be described. Figure 7 2 is a cross-sectional view illustrating the light emitting module 100 after the filter 2 is moved. Figure 2 Similar along Figure 1 II cutting line cross-sectional view, and Figure 2 The only difference is that the filter 2 is moved to the +Z direction side. Fig. 8A and Figure 8B This is a diagram illustrating light transmitted through the optical filter 2. Fig. 8A For Figure 1, Figure 8B This is Figure 2.

[0115] like Figure 7 As shown, by moving the movable member 31 of the variable mechanism 3 along the +Z direction, the filter 2 is changed from Figure 2 The position of filter 2 in ( Figure 7 From the position of the dotted line U shown in FIG. 1 , the variable mechanism 3 preferably moves the filter 2 in the +Z direction while maintaining the filter 2 and the light emitting surface 11 of the light emitting unit 1 substantially parallel to each other.

[0116] Figure 7In FIG. 5 , the distance δ is a relative movement distance between the light emitting unit 1 and the optical filter 2 along the central axis 41 of the first lens 4 . Figure 7 In FIG. 1 , the relative movement distance of the surface of the filter 2 on the −Z direction side is defined as the distance δ. The directivity half-value angle θ is the half-value angle of the divergence angle of the light emitted from the light emitting unit 1 and propagating in the +Z direction.

[0117] The positional relationship between the filter 2 and the light emitting section 1 along the Z direction changes due to the movement of the filter 2. Accordingly, part of the light emitted from the light emitting section 1 that spreads and propagates is transmitted through the first area 21, and the other part is transmitted through the second area 22 located around the first area 21 in the top view.

[0118] Specifically, if Fig. 8A As shown, before the filter 2 moves, most of the white light emitted from the light emitting section 1 passes through the first region 21, and the color of the light emitted from the filter 2 becomes substantially white. The white light La emitted from the filter 2 is an example of light of the first chromaticity.

[0119] On the other hand, Figure 8B As shown in FIG. 1 , after the filter 2 moves in the +Z direction, the light emitted from the light emitting section 1 further diverges at the position where it enters the filter 2, so that part of it enters the first region 21, and the other part enters the second region 22. The light that enters the first region 21 is emitted from the filter 2 as white light La, and the light that enters the second region 22 is emitted from the filter 2 as amber light Lb. The amber light Lb is an example of light of the second chromaticity.

[0120] The white light emitted from the light emitting section 1 is transmitted through the first area 21 or the second area 22 of the optical filter 2, and then becomes white light La and amber light Lb, and these lights are emitted from the optical filter 2 after the light amount ratio is adjusted. In other words, the optical filter 2 can extract the light (in other words, the light after color mixing) of the light emitted from the plurality of light emitting sections 1, which is the light of different colors that respectively transmits the first area 21 and the second area 22, and the light amount is adjusted. The mixed color light extracted by the optical filter 2 is irradiated to the +Z direction side by the first lens 4.

[0121] The color of the mixed light becomes an intermediate color between white and amber. The ratio of the amount of light transmitted from the first area 21 and the amount of light transmitted from the second area 22 is changed according to the position of the filter 2 in the Z direction, thereby changing the chromaticity of the mixed light. The light emitting module 100 can change the position of the filter 2 in the Z direction by the variable mechanism 3, and can adjust the color by adjusting the amount of light of different colors. It should be noted that, as described later, at least one of the first area 21 and the second area 22 of the filter 2 may include a passing portion for light to pass through.

[0122] <Functions and Effects of Light Emitting Module 100>

[0123] The function and effect of the light emitting module 100 will be described.

[0124] The light emitting module 100 of the present embodiment has a plurality of light emitting units 1. In addition, the light emitting module 100 has an optical component 2 (filter) that includes a first region 21 capable of extracting light of a first chromaticity (white light La) and a second region 22 capable of extracting light of a second chromaticity (amber light Lb) and transmits light emitted from the plurality of light emitting units 1. In addition, the light emitting module 100 further has a variable mechanism 3 that changes the distance between the plurality of light emitting units 1 and the filter 2, and a first lens 4 that irradiates the light transmitted from the filter 2. The variable mechanism 3 changes the distance between the light emitting unit 1 and the filter 2 in a direction along the central axis 41 of the first lens 4.

[0125] The filter 2 can extract the mixed light after passing through the first area 21 and the second area 22 respectively from the light emitted from the multiple light-emitting units 1, and the variable mechanism 3 can change the chromaticity of the mixed light by changing the distance between the multiple light-emitting units 1 and the filter 2.

[0126] The color of the mixed light can be changed by changing the ratio of the amount of light transmitted from the first area 21 to the amount of light transmitted from the second area 22 according to the position of the filter 2 in the Z direction. The light emitting module 100 changes the position of the filter 2 in the Z direction to adjust the color mixing, thereby adjusting the color of the light irradiated by the first lens 4.

[0127] In the light emitting module 100 of this embodiment, for example, since it is not necessary to separately prepare a light emitting module for white light and a light emitting module for amber light and to perform color mixing on the lights emitted from these modules for color adjustment, the light emitting module as a whole can be miniaturized and the cost can be reduced. In addition, it is not necessary to align the positions of the lights from the two light emitting modules that emit lights of different chromaticities.

[0128] In this embodiment, by arbitrarily changing the position of the filter 2 in the Z direction, the color that is an intermediate color between white and amber can be arbitrarily changed, so that a light emitting module 100 with a high degree of freedom in adjusting the color of light can be provided.

[0129] It should be noted that, in the present embodiment, although white is exemplified as the first chromaticity and amber is exemplified as the second chromaticity, the first chromaticity and the second chromaticity are not limited to white and amber, and can be appropriately selected according to the purpose of the light emitting module 100. The light emitting module 100 can adjust the color between the straight line connecting the first chromaticity and the second chromaticity in the CIE1931 color space (in other words, the color that is the intermediate color between the first chromaticity and the second chromaticity) with a high degree of freedom.

[0130] In this embodiment, although the optical filter 2 has a configuration including a plurality of first regions 21, the present invention is not limited thereto, and the optical filter 2 may have at least one first region 21. In addition, the optical filter 2 may have a configuration including at least one first region 21 and a plurality of second regions 22.

[0131] The optical filter 2 may include a plurality of first regions 21 and a plurality of second regions 22. For example, Fig. 9A As shown in FIG. 1 , in the optical filter 2, a plurality of second regions 22 surround a plurality of first regions 21, respectively, and adjacent second regions 22 are isolated from each other by a light shielding member 23. The light shielding member 23 is, for example, a resin containing a light diffusion member such as titanium oxide, barium titanate, aluminum oxide, silicon oxide, etc., a resin containing a light absorption member such as graphite powder, or a metal. In this way, by independently providing a plurality of first regions 21 and a plurality of second regions 22 for each of the plurality of light emitting portions 1, the propagation of light between adjacent first regions 21 and second regions 22 can be suppressed.

[0132] In the present embodiment, although the configuration in which the light emitted from the light emitting section 1 transmits the first region 21 and the second region 22 of the optical filter 2 is exemplified, the light emitted from the light emitting section 1 may pass through at least one of the first region 21 and the second region 22. The configuration (structure) through which the light passes is, for example, a through hole formed in a region corresponding to at least one of the first region 21 and the second region 22 of the optical filter 2. Fig. 9B This is an example of a filter configuration in which the first region 21 is a through hole. Since the color of light passing through the through hole does not change, the light emitting module 100 can mix the white light passing through the through hole and the amber light transmitted from the region other than the through hole to adjust the color.

[0133] In addition, in the present embodiment, the plurality of light emitting units 1 are arranged in a grid shape, and the first region 21 is provided to form a pair with each of the plurality of light emitting units 1. With this configuration, the light emitting module 100 can be miniaturized compared to the case where both the first region 21 and the second region 22 are provided for each of the plurality of light emitting units 1. It should be noted that the region that forms a pair with each of the plurality of light emitting units 1 is not limited to the first region 21, and the same effect can be obtained even with either the first region 21 or the second region 22.

[0134] In addition, in the present embodiment, the configuration position of the light emitting unit 1 in the top view and the irradiation position of the light emitted from the light emitting unit 1 after being irradiated by the first lens 4 have a point-symmetric positional relationship with respect to the central axis of the first lens 4. With this configuration, the light emitting module 100 can reduce the vignetting of light caused by the first lens 4.

[0135] In addition, in the present embodiment, the second region 22 in the top view is disposed around the first region 21. With this configuration, the white light La transmitted from the first region 21 can be mixed with the amber light Lb transmitted from the second region 22 located around it in the top view, and therefore, the light emitting module 100 can suppress the color unevenness of the mixed light, and thus can obtain color-adjusted light with better uniformity.

[0136] In addition, in this embodiment, the plurality of light emitting units 1 each have a light emitting surface 11 and are arranged at equal intervals along the X direction. The optical filter 2 has a plurality of first regions 21 that are paired with the light emitting surfaces 11 of the plurality of light emitting units 1, respectively, and the light emitting surfaces 11 are arranged inside the first regions 21 in a plan view. The variable mechanism 3 relatively moves the light emitting unit 1 and the optical filter 2 along the central axis 41 of the first lens 4, thereby changing the distance between the light emitting unit 1 and the optical filter 2. The preferred distance δ based on the relative movement between the light emitting unit 1 and the optical filter 2 is: 1 It is expressed by the relationship of the following equation (1) (for the distance δ and the half-value directivity angle θ, see Figure 7 , for the distance d, see Figure 3 ).

[0137] [Formula 1]

[0138]

[0139] here, Fig. 10A is the distance d, distance δ 1 and the directivity half-value angle θ. Figure 3 and Fig. 10AAs shown in FIG. 1 , the centers of the adjacent light emitting portions 1a and 1b are spaced apart by a distance d in the X direction. The lower surface 2d of the filter represents the surface of the filter 2 on the -Z direction side before the movement, and the lower surface 2u of the filter represents the surface of the filter 2 on the -Z direction side after the movement. It should be noted that, specifically, the distance δ 1 is the distance between the light emitting surface 11 of the light emitting unit 1 and the lower surface of the filter 2 .

[0140] The distance δ between the light emitting unit 1 and the filter 2 caused by the relative movement between the light emitting unit 1 and the filter 2 1 The relationship of the above formula (1) indicates that the incident positions of the light emitted from the adjacent light-emitting parts 1a and 1b before and after the filter 2 moves do not overlap, so the light-emitting module 100 can improve the contrast of the light emitted from the adjacent light-emitting parts 1a and 1b. Therefore, when partial illumination is performed, for example, the contrast of the partially illuminated light can be improved. It should be noted that partial illumination refers to making a part of the multiple light-emitting parts 1 emit light, thereby only partially illuminating the area that can be illuminated by the light-emitting module 100, that is, the area that is illuminated when the multiple light-emitting parts 1 are all illuminated. In addition, contrast refers to the brightness difference between the area illuminated by light and the area not illuminated by light, that is, the height of the contrast.

[0141] Another preferred distance δ caused by the relative movement between the light emitting unit 1 and the filter 2 is 2 It can be expressed by the following relationship (2) (Regarding the light emitting surface width q of the light emitting surface 11, see Figure 5 ).here, Fig. 10B is the distance d, distance δ 2 , the directivity half-value angle θ and the region width p of the first region 21. Distance δ 2 is the distance between the light emitting surface 11 of the light emitting unit 1 and the lower surface of the filter 2 .

[0142] [Formula 2]

[0143]

[0144] By making the relative movement distance δ 2 As shown in the relationship of the above formula (2), the light emitting module 100 can increase the amount of light transmitted from the second region 22, thereby increasing the width of the color adjustment, and can make the dark lines and dark parts in the irradiation region S less noticeable. It should be noted that the dark lines refer to the darker linear regions in the irradiation region S, and the dark parts refer to the darker two-dimensional regions in the irradiation region S.

[0145] In this embodiment, although the configuration in which the first region 21 includes a transmission portion is illustrated, the first region 21 may further include at least one of a color filter that transmits light of a portion of wavelengths among the light emitted from the light emitting portion 1 and a wavelength conversion substance that converts the light emitted from the light emitting portion 1 into light of a portion of wavelengths. In addition, in this embodiment, although the configuration in which the second region 22 includes a color filter is illustrated, the second region 22 may further include at least one of a transmission portion that transmits light emitted from the light emitting portion 1 and a wavelength conversion substance that converts the light emitted from the light emitting portion 1 into light of another wavelength different from the portion of wavelengths. With these configurations, the same effects as those of the light emitting module 100 can be obtained.

[0146] [Second embodiment]

[0147] A light emitting module 100a according to a second embodiment will be described. It should be noted that the same names and reference numerals as those in the first embodiment indicate the same or homogeneous components, and detailed descriptions thereof are appropriately omitted. This also applies to the embodiments and modifications described below.

[0148] Fig.11 This is a cross-sectional view illustrating the structure of the light emitting module 100 a.

[0149] like Fig.11 As shown, the light emitting module 100a has a plurality of light emitting units 10 and an optical component 2a. The light emitting unit 10 is mounted on the surface of the light emitting unit mounting substrate 5 on the +Z direction side. The plurality of light emitting units 10 are arranged in a grid pattern along the X direction and the Y direction. In this embodiment, the light emitting module 100a using a light emitting element emitting blue light as the light emitting unit 10 and a wavelength conversion component as the optical component 2a is used as an example for description.

[0150] It should be noted that the light emitting unit 10 of the light emitting module 100a may use various light sources such as a xenon lamp. However, in order to efficiently excite the wavelength conversion material included in the wavelength conversion member 2a, a light emitting element such as an LED that emits light of a short wavelength is preferred.

[0151] The wavelength conversion member 2 a includes a first region 21 a capable of extracting light of a first chromaticity and a second region 22 a capable of extracting light of a second chromaticity different from the first chromaticity, and is an example of an optical member that transmits light emitted from the plurality of light emitting units 10 .

[0152] The wavelength conversion component 2a is provided on the +Z direction side of the plurality of light emitting units 10 and fixed to the inner side of the mover 31. The variable mechanism 3 can move the wavelength conversion component 2a in the Z direction by moving the mover 31 along the Z axis, thereby changing the distance along the Z direction between each of the plurality of light emitting units 10 and the wavelength conversion component 2a.

[0153] In this embodiment, the plurality of first regions 21a are provided so as to be paired with the plurality of light emitting units 10. However, the present invention is not limited to this configuration, and either the first region 21a or the second region 22a may be provided so as to be paired with the plurality of light emitting units 10.

[0154] Fig.11 In the state shown, the light emitted from each of the plurality of light emitting sections 10 passes through the paired first regions 21a and then enters the first lens 4 provided on the +Z direction side of the wavelength conversion member 2a. On the other hand, most of the light emitted from each of the plurality of light emitting sections 10 does not enter the second region 22a of the wavelength conversion member 2a and therefore does not pass through the second region 22a.

[0155] The first region 21a is a plurality of regions whose shape in a plan view is formed into a substantially rectangular shape. The first region 21a includes a wavelength conversion material that converts the light emitted from the light emitting unit 10 into light of the first wavelength. The first region 21a can extract mixed light of the light of the first wavelength converted by the wavelength conversion material and the light emitted from the light emitting unit 10, that is, light of the first chromaticity. In the present embodiment, the first region 21a extracts white light as the light of the first chromaticity.

[0156] The second region 22a is a region provided around the first region 21a of the wavelength conversion member 2a in a plan view. The second region 22a contains a wavelength conversion substance that converts the light emitted from the light emitting unit 10 into light of the second wavelength. The second region 22a can extract light of the second wavelength converted by the wavelength conversion substance and the light emitted from the light emitting unit 10, that is, light of the second chromaticity. In the present embodiment, the second region 22a extracts amber light as the light of the second chromaticity.

[0157] The wavelength conversion components respectively included in the first region 21a and the second region 22a may be components having a resin such as silicone, glass, ceramics, etc. as a base material and containing the above-mentioned wavelength conversion substance, or may be components having a wavelength conversion substance printed on the surface of a molded body such as glass, or may be a sintered body of the wavelength conversion substance.

[0158] Fig.12 The wavelength conversion member 2a is moved from the +Z direction to the +Z direction. Fig.11 The position of the wavelength conversion component 2a starts to move along the +Z direction and stops.

[0159] The movement of the wavelength conversion member 2a changes the positional relationship between the wavelength conversion member 2a and the light emitting unit 10 along the Z direction. As a result, part of the light emitted from the light emitting unit 10 that spreads while being emitted passes through the first region 21a, and the other part passes through the second region 22a.

[0160] In other words, the wavelength conversion member 2a can extract light whose light amounts of different colors transmitted through the first region 21a and the second region 22a are adjusted among the lights emitted by the plurality of light emitting units 10. The light whose light amounts of different colors emitted from the wavelength conversion member 2a are adjusted (in other words, the light after color mixing) is irradiated toward the +Z direction side by the first lens 4.

[0161] The color of the mixed light becomes an intermediate color between white and amber. The ratio of the amount of light transmitted from the first area 21a and the amount of light transmitted from the second area 22a is changed according to the position of the wavelength conversion component 2a in the Z direction, thereby changing the chromaticity of the mixed light. The light emitting module 100a changes the position of the wavelength conversion component 2a in the Z direction through the variable mechanism 3, thereby adjusting the amount of light of different colors for color adjustment. It should be noted that at least one of the first area 21a and the second area 22a may include a passing portion.

[0162] It should be noted that, in this embodiment, although white as the first chromaticity and amber as the second chromaticity are exemplified, the first chromaticity and the second chromaticity are not limited to white and amber, and can be appropriately selected according to the purpose of the light emitting module 100a. The light emitting module 100a can adjust the color between the straight line connecting the first chromaticity and the second chromaticity in the CIE1931 color space (in other words, the color that is the intermediate color between the first chromaticity and the second chromaticity) with a high degree of freedom.

[0163] The operation and effects of the light emitting module 100 a are the same as those of the light emitting module 100 according to the first embodiment.

[0164] (Variation Example)

[0165] Fig.13 2 is a cross-sectional view illustrating the structure of an optical component 2b according to a modified example. The optical component 2b, namely, a wavelength conversion component includes a first region 21b capable of extracting light of a first chromaticity and a second region 22b capable of extracting light of a second chromaticity different from the first chromaticity.

[0166] The plurality of first regions 21b are arranged in a grid shape along the X direction and the Y direction, for example, and are a plurality of regions whose shape in a plan view is a substantially rectangular shape. The second region 22b is provided around each of the plurality of first regions 21b in a plan view. That is, the second region 22b extends linearly along the X direction and the Y direction, and has an intersection surrounded by four first regions 21b adjacent in the X direction and the Y direction.

[0167] The substrate (matrix) of the wavelength conversion component 2b is a transparent plate-like component made of a resin material such as polycarbonate or a glass material. A color tone conversion component such as a paint, a pigment, a color filter, etc. is provided on the surface of the wavelength conversion component 2b on the +Z direction side. The area where the color tone conversion component is provided corresponds to the second area 22b. On the other hand, the area where the color tone conversion component is not provided and the substrate of the wavelength conversion component 2b is exposed corresponds to the first area 21b. It should be noted that the substrate of the wavelength conversion component 2b may also include a wavelength conversion substance that converts the wavelength of the light emitted from the light-emitting unit 1.

[0168] The light emitting module 100a or the light emitting module 100 can adjust the color mixing by changing the position of the wavelength conversion member 2b in the Z direction through the variable mechanism 3. The light emitting module 100 and the light emitting module 100a having the wavelength conversion member 2b have the same effects as described above.

[0169] [Third embodiment]

[0170] Fig.14 2 is a cross-sectional view illustrating the configuration of a light emitting module 100 c according to the third embodiment. The light emitting module 100 c further includes a plurality of second lenses 7 .

[0171] The plurality of second lenses 7 are arranged between the filter 2 and the first lens 4 so as to form pairs with the plurality of light-emitting units 1. The plurality of second lenses 7 are arranged in a grid pattern along the X direction and the Y direction, respectively, and overlap with the plurality of light-emitting units 1 in a top view. The plurality of second lenses 7 of this embodiment are described by taking a TIR (Total Internal Reflection) lens having a total reflection unit on the side of the light-emitting unit 1 as an example. The number of the plurality of second lenses 7, the diameter, the radius of curvature, the shape, etc. of each lens can be appropriately selected according to the purpose of the light-emitting module 100c.

[0172] Each of the plurality of second lenses 7 is transparent with respect to the light emitted from the light emitting portion 1, and is formed in a manner including at least one of a resin material such as polycarbonate resin, acrylic resin, silicone resin, silicone-modified resin, epoxy resin, epoxy-modified resin, and the like, and a glass material. It should be noted that the transparency here refers to the property of allowing more than 60% of the light from the light emitting portion 1 to be transmitted. In the present embodiment, the plurality of second lenses 7 are integrally formed by injection molding the resin material, so that adjacent second lenses 7 are continuous with each other. However, the plurality of second lenses 7 may also be separated individually. In addition, the method for manufacturing the second lenses 7 is not limited to the injection molding of the resin material, and cutting of the resin or glass material may also be used.

[0173] The variable mechanism 3 moves the filter 2 and the plurality of second lenses 7 integrally in the direction along the central axis 41 of the first lens 4. It should be noted that moving the plurality of second lenses 7 and the filter 2 integrally includes moving the plurality of second lenses 7 and the filter 2 in a state of being isolated from each other and moving the plurality of second lenses 7 and the filter 2 in a state of being in contact with each other.

[0174] Fig.15 2 is a cross-sectional view illustrating a light emitting module 100c in which the optical filter 2 and the plurality of second lenses 7 are moved integrally. By moving the mover 31 of the variable mechanism 3 in the +Z direction, the optical filter 2 is moved from Fig.14 The position of filter 2 in starts to move along the +Z direction and stops.

[0175] The movement of the filter 2 changes the positional relationship between the filter 2 and the light emitting unit 1 along the Z direction. As a result, part of the light emitted from the light emitting unit 1 that spreads and propagates passes through the first region 21 including the transmissive portion, and the other part passes through the second region 22 .

[0176] Fig.16A and Fig. 16B 2 is a diagram showing light transmitted through the filter 2 and the plurality of second lenses 7. Fig.16A For Figure 1, Fig. 16B This is Figure 2. Fig.16A As shown, before the filter 2 and the plurality of second lenses 7 move as a whole, most of the white light emitted from the light emitting portion 1 enters the first region 21 including the transmission portion and is transmitted from the first region 21, and the light emitted from the filter 2 becomes substantially white light. In addition, the light emitted from the filter 2 enters the second lens 7, and after the divergence angle is suppressed by the second lens 7, it is emitted from the second lens 7.

[0177] On the other hand, Fig. 16B As shown in FIG. 1 , after the filter 2 moves in the +Z direction, the light emitted from the light emitting section 1 further diverges at the position where it is incident on the filter 2, and for this reason, a part of it is incident on the first region 21, and the other part is incident on the second region 22. The light incident on the first region 21 is emitted from the filter 2 as white light La. On the other hand, the light incident on the second region 22 is emitted from the filter 2 as amber light Lb. In addition, the light emitted from the filter 2 is incident on the second lens 7, and after the divergence angle is suppressed by the second lens 7, it is emitted from the second lens 7.

[0178] Before and after the filter 2 is moved, the positional relationship between the filter 2 and the second lens 7 does not change. That is, the variable mechanism 3 moves the filter 2 and the second lens 7 integrally, and therefore, before and after the movement, the divergence angle of the light transmitted or passed through the filter 2 and emitted from the second lens 7 does not change substantially. The white light La and the amber light Lb are mixed with each other after being emitted from the second lens 7 to perform color mixing. The mixed color light is irradiated to the +Z direction side by the first lens 4.

[0179] The color of the mixed light can be changed by changing the ratio of the amount of light transmitted from the first area 21 to the amount of light transmitted from the second area 22 according to the position of the filter 2 and the second lens 7 in the Z direction. The light emitting module 100c changes the position of the filter 2 and the second lens 7 in the Z direction by the variable mechanism 3, thereby adjusting the color mixing to perform color adjustment.

[0180] The light emitting module 100c includes the second lens 7 between the filter 2 and the first lens 4, thereby suppressing the divergence of the light transmitted from the filter 2, compared with the case where the second lens 7 is not provided. Accordingly, it is possible to suppress the mixing of the mixed color light emitted from one second lens 7 with other mixed color light, such as the mixed color light emitted from the adjacent second lens 7. Therefore, the light emitting module 100c can obtain the color-adjusted light with suppressed color unevenness. The other effects of the light emitting module 100c are the same as those of the first embodiment.

[0181] It should be noted that, in this embodiment, although the configuration in which the filter 2 and the second lens 7 are moved integrally in the Z direction by the variable mechanism 3 is illustrated, the present invention is not limited thereto. For example, another variable mechanism different from the variable mechanism 3 may be used to move the second lens 7 independently of the filter 2 in the Z direction.

[0182] In the present embodiment, although the light emitting module 100 c is illustrated as having the optical filter 2 , the light emitting module 100 c may have the wavelength conversion member 2 a or the wavelength conversion member 2 b instead of the optical filter 2 .

[0183] [Fourth embodiment]

[0184] Fig.18 2 is a cross-sectional view illustrating the configuration of a light emitting module 100 d according to the fourth embodiment. The light emitting module 100 d further includes a diffuser plate 8 and a first lens shifting mechanism 9 .

[0185] The diffuser 8 diffuses the light emitted from the light emitting unit 1 and transmitted through the optical filter 2 and the second lens 7. The diffuser 8 is a transparent plate-shaped member made of, for example, glass, resin, etc. Concavities and convexities having a width or height substantially the same as the wavelength of the light can be formed on the surface of the diffuser 8.

[0186] The first lens moving mechanism 9 is an example of a moving mechanism that moves the first lens 4 and the plurality of light emitting units 1 relative to each other in a direction intersecting the central axis 41 of the first lens 4. In the present embodiment, the first lens moving mechanism 9 moves the first lens 4 and the plurality of light emitting units 1 relative to each other in the X direction that is substantially perpendicular to the central axis 41. However, the present invention is not limited thereto, and the first lens moving mechanism 9 may also move the first lens 4 and the plurality of light emitting units 1 relative to each other in the Y direction, or may also move the first lens 4 and the plurality of light emitting units 1 relative to each other in the X direction and the Y direction, respectively. It should be noted that in the present embodiment, the direction intersecting the central axis 41 refers to a direction that is preferably substantially perpendicular to the central axis 41 and has an inclination within ±10° relative to the central axis 41.

[0187] The first lens shifting mechanism 9 includes a driving unit such as a voice coil motor and an ultrasonic motor. In addition, the first lens shifting mechanism 9 also has an opening having a substantially circular shape in a plan view at a substantially central portion. The first lens shifting mechanism 9 can move the first lens 4 held inside the opening by driving the voice coil motor and the ultrasonic motor.

[0188] The light emitted toward the +Z direction side by the first lens 4 passes through the transparent member 63 provided in the housing 6 so as to face the first lens 4 , and then is emitted toward the +Z direction side of the light emitting module 100 d .

[0189] The light emitting module 100d uses a diffusion plate 8 to diffuse the light adjusted by the filter 2 and reduce its directivity, thereby suppressing the color unevenness of the adjusted light. In addition, the light emitting module 100d uses a first lens moving mechanism 9 to move the first lens 4, thereby changing the irradiation direction and irradiation position of the adjusted light. Other effects are the same as those of the light emitting module 100.

[0190] [Fifth embodiment]

[0191] See also Fig.19 A light emitting module 100e according to a fifth embodiment will be described with reference to FIG. 20 . Fig.19 20 is a diagram illustrating the configuration of the third lens 20 included in the light emitting module 100e. Fig.19 FIG20 is a top view, FIG21 is a top view, FIG22 is a top view, FIG24 is a top view, FIG25 is a top view, FIG26 is a top view, FIG27 is a top view Fig.19 The cross-sectional view of the XIX-XIX cutting line. It should be noted that Fig.19 20 , for convenience of explanation, only the peripheral (surrounding) components of the optical filter 2 are shown.

[0192] The third lens 20 includes a plurality of light distribution portions 20a. In the present embodiment, the third lens 20 is a substantially plate-shaped member, and is configured so that the surface on the +Z direction side contacts the surface on the -Z direction side of the optical filter 2. However, the third lens 20 does not necessarily have to contact the optical filter 2, and an air layer, an adhesive, etc. may be present between the third lens 20 and the optical filter 2.

[0193] The light distribution section 20a is arranged to be located between the filter 2 and the plurality of light emitting sections 1 so as to overlap with the plurality of light emitting sections 1 in a top view and to be paired with the plurality of light emitting sections 1 respectively. The plurality of light distribution sections 20a respectively determine the light distribution of the light from the paired light emitting sections 1. The light distribution section 20a is arranged on the -Z direction side of the third lens 20, and is, for example, a Fresnel lens section that divides a convex or concave lens shape into concentric circular areas and has a sawtooth-shaped cross section. In the present embodiment, the third lens 20 is a roughly plate-shaped member, and has a Fresnel lens section, i.e., the light distribution section 20a, on the surface of the roughly plate-shaped member on the light emitting section 1 side.

[0194] The variable mechanism 3 holds the third lens 20 on the inner side of the movable member 31 in the top view, and by moving the movable member 31 in the direction along the central axis 41 of the first lens 4, the filter 2 and the third lens 20 including the plurality of light distribution portions 20a can be moved integrally in the direction along the central axis 41 of the first lens 4. It should be noted that FIG. 20 shows a state in which the filter 2 and the third lens 20 are closest to the plurality of light emitting portions 1. The shortest distance between the third lens 20 and the plurality of light emitting portions 1 is, for example, not less than 50 μm and not more than 200 μm. The variable mechanism 3 can move the filter 2 and the third lens 20 integrally toward the +Z direction side starting from the state of FIG. 20.

[0195] The light emitted from each of the plurality of light emitting units 1 propagates toward the +Z direction while being divergent, and enters the paired light distribution units 20a. The plurality of light distribution units 20a suppress the divergence of the incident light, and convert it into light close to parallel light. The light emitted from each of the plurality of light distribution units 20a is transmitted or passed through the filter 2, and then emitted toward the +Z direction.

[0196] The variable mechanism 3 moves the optical filter 2 and the third lens 20 integrally, and therefore the divergence angle of the light incident on the third lens 20 and transmitted or passing through the optical filter 2 does not substantially change between before and after the movement.

[0197] The ratio of the amount of light transmitted or passed through the first region 21 to the amount of light transmitted or passed through the second region 22 is changed according to the positions of the filter 2 and the third lens 20 in the Z direction, thereby changing the color of the mixed light. The light emitting module 100e can adjust the color mixing by changing the positions of the filter 2 and the third lens 20 in the Z direction using the variable mechanism 3 to adjust the color.

[0198] The light emitting module 100e has a third lens 20 including a light distribution portion 20a between the filter 2 and the light emitting unit 1. Therefore, compared with the case where the third lens 20 is not provided, the divergence of light before passing through or transmitting the filter 2 can be suppressed, and light close to parallel light can be obtained. Accordingly, the mixed color light emitted from the predetermined area of ​​the filter 2 can be suppressed from mixing with other mixed color light such as the mixed color light emitted from the area around the predetermined area. Therefore, the light emitting module 100e can obtain color-adjusted light with suppressed color unevenness. The other effects of the light emitting module 100e are the same as those of the first embodiment.

[0199] It should be noted that, in this embodiment, although the configuration in which the optical filter 2 and the third lens 20 are moved integrally in the Z direction by the variable mechanism 3 is illustrated, the present invention is not limited thereto. For example, the third lens 20 may be moved in the Z direction independently of the optical filter 2 by a variable mechanism different from the variable mechanism 3. Furthermore, although the configuration in which the third lens 20 has a plurality of light distribution portions 20a on the surface opposite to the surface facing the optical filter 2 is also illustrated, the third lens 20 may also have a plurality of light distribution portions 20a on the surface facing the optical filter 2 (in other words, the surface on the +Z direction side of the third lens 20).

[0200] In the present embodiment, although the light emitting module 100 e is illustrated as having a configuration including the optical filter 2 , the light emitting module 100 e may include a wavelength converting member 2 a or a wavelength converting member 2 b instead of the optical filter 2 .

[0201] As described above, although the preferred embodiments and the like have been described in detail, the present invention is not limited to the above embodiments and the like, and various modifications and substitutions may be made to the above embodiments and the like without departing from the technical scope described in the claims.

[0202] The light emitting module of the present invention can be applied to lighting, camera flash, vehicle headlight, etc. However, the light emitting module of the present invention is not limited to these uses.

[0203] For example, the present disclosure is as follows.

[0204] <Item 1>

[0205] A light emitting module, comprising:

[0206] A plurality of light emitting parts;

[0207] An optical component including at least one first region capable of extracting light of a first chromaticity and at least one second region capable of extracting light of a second chromaticity different from the first chromaticity, and allowing the light emitted from the plurality of light emitting portions to transmit or pass therethrough;

[0208] A variable mechanism for changing the distance between the plurality of light emitting units and the optical component; and

[0209] a first lens for incident light transmitted or passing through the optical component;

[0210] in,

[0211] Either the first region or the second region is provided to form a pair with each of the plurality of light emitting units.

[0212] The variable mechanism changes the distance between the light emitting unit and the optical member in a direction along the central axis of the first lens.

[0213] <Item 2>

[0214] The light emitting module according to item 1, wherein the plurality of light emitting portions are arranged in a grid pattern.

[0215] <Item 3>

[0216] The light emitting module according to <Item 1> or <Item 2> further comprises a moving mechanism that relatively moves the first lens and the plurality of light emitting units in a direction intersecting a central axis of the first lens.

[0217] <Item 4>

[0218] A light-emitting module as described in any one of <Item 1> to <Item 3>, wherein the optical component is capable of extracting light whose ratio of the amount of light transmitted or passing through the first area and the second area respectively is adjusted among the lights emitted by the multiple light-emitting portions, and the variable mechanism changes the chromaticity of the light whose ratio of the amount of light is adjusted by changing the distance between the multiple light-emitting portions and the optical component.

[0219] <Item 5>

[0220] A light-emitting module as described in any one of <Item 1> to <Item 4>, wherein the configuration position of the light-emitting portion in the top view and the irradiation position of the light emitted from the light-emitting portion after being irradiated by the first lens have a point-symmetrical positional relationship with respect to the central axis of the first lens.

[0221] <Item 6>

[0222] The light emitting module according to any one of Item 1 to Item 5, wherein a plurality of second lenses are provided between the optical component and the first lens, and are arranged to overlap with the plurality of light emitting portions in a plan view and to form pairs with the plurality of light emitting portions, respectively.

[0223] <Item 7>

[0224] In the light emitting module according to Item 6, the variable mechanism moves the optical member and the plurality of second lenses integrally in a direction along a central axis of the first lens.

[0225] <Item 8>

[0226] A light-emitting module as described in any one of <Item 1> to <Item 7>, wherein a third lens is provided between the optical component and the plurality of light-emitting portions, the third lens being arranged to overlap with the plurality of light-emitting portions in a top view and to form a pair with each of the plurality of light-emitting portions, and including a plurality of light distribution portions for determining light distribution of light from the plurality of light-emitting portions.

[0227] <Item 9>

[0228] In the light emitting module according to Item 8, the variable mechanism integrally moves the optical member and the third lens including the plurality of light distribution portions in a direction along the central axis of the first lens.

[0229] <Item 10>

[0230] The light emitting module according to any one of <Item 1> to <Item 9>, wherein the second region is provided around the first region in a plan view.

[0231] <Item 11>

[0232] A light-emitting module as described in any one of <Item 1> to <Item 10>, wherein the plurality of light-emitting parts respectively have light-emitting surfaces and are arranged at equal intervals in at least one of the longitudinal and lateral directions, the optical component has a plurality of the first regions respectively paired with the light-emitting surfaces of the plurality of light-emitting parts, the light-emitting surfaces are arranged on the inner side of the first regions in a top view, and the variable mechanism changes the distance δ between the light-emitting part and the optical component by relatively moving the light-emitting part and the optical component along the central axis of the first lens, and the distance δ based on the relative movement of the light-emitting part and the optical component is expressed by the relationship of the above-mentioned formula (1) or formula (2).

[0233] <Item 12>

[0234] The light emitting module according to any one of <Item 1> to <Item 11>, wherein the optical member includes a plurality of the first regions and a plurality of the second regions.

[0235] <Item 13>

[0236] A light-emitting module as described in any one of <Item 1> to <Item 12>, wherein the first region includes at least one of a transmissive portion that transmits light emitted from the light-emitting portion, a color filter that transmits light of a portion of wavelengths among the light emitted from the light-emitting portion, and a wavelength conversion substance that converts the light emitted from the light-emitting portion into light of the portion of wavelengths, and the second region includes at least one of a transmissive portion that transmits light emitted from the light-emitting portion, a color filter that transmits light of other wavelengths among the light emitted from the light-emitting portion that is different from the portion of wavelengths, and a wavelength conversion substance that converts the light emitted from the light-emitting portion into light of the other wavelengths.

[0237] This application claims priority based on Japanese Patent Application No. 2022-054467 filed with the Japan Patent Office on March 29, 2022, and incorporates the entire contents of the Japanese Patent Application.

[0238] [Explanation of Reference Numerals]

[0239] 1.10 Light-emitting part

[0240] 11 Luminous surface

[0241] 12 Light-emitting element

[0242] 13 Electrodes

[0243] 14 Transparent parts

[0244] 15 Covering parts

[0245] 2 Filters

[0246] 21 Area 1

[0247] 22 Area 2

[0248] 3 Variable mechanism

[0249] 31 Movers

[0250] 32 Spring

[0251] 33 Support

[0252] 4 1st lens

[0253] 41 Center axis

[0254] 42 1st convex surface

[0255] 43 2nd convex surface

[0256] 5. Light-emitting unit mounting substrate

[0257] 51 Wiring

[0258] 52 Conductive adhesive parts

[0259] 6 Frame

[0260] 61 Opening

[0261] 62 Holding unit

[0262] 7 Second lens

[0263] 8 Diffuser Plate

[0264] 9 1st lens shift mechanism

[0265] 20 3rd lens

[0266] 20a Light Distribution Department

[0267] 100 Light emitting modules

[0268] d Distance

[0269] La White Light

[0270] Lb Amber Light

[0271] p Region width

[0272] q Width of luminous surface

[0273] S Irradiation area

[0274] T Irradiation position

[0275] δ、δ 1 , δ 2 distance

[0276] θ is the half-value directivity angle.

Claims

1. A light emitting module, comprising: A plurality of light emitting parts; an optical component including at least one first region capable of extracting light of a first chromaticity and at least one second region capable of extracting light of a second chromaticity different from the first chromaticity, and allowing the light emitted from the plurality of light emitting portions to transmit or pass therethrough; A variable mechanism for changing the distance between the plurality of light emitting units and the optical component; and a first lens for incident light transmitted or passing through the optical component, in, Any one of the first region and the second region is provided to form a pair with each of the plurality of light emitting units. The variable mechanism changes the distance between the light emitting unit and the optical member in a direction along the central axis of the first lens.

2. The light emitting module according to claim 1, in, The plurality of light emitting parts are arranged in a lattice shape.

3. The light emitting module according to claim 1 or 2, further comprising: The moving mechanism relatively moves the first lens and the plurality of light emitting units in a direction intersecting the central axis of the first lens.

4. The light emitting module according to any one of claims 1 to 3, in, The optical component can extract light whose ratio of the amount of light transmitted or passing through the first area and the second area, respectively, among the light emitted from the plurality of light emitting units, is adjusted. The variable mechanism changes the chromaticity of the light whose ratio of the light amount is adjusted by changing the distance between the plurality of light emitting units and the optical member.

5. The light emitting module according to any one of claims 1 to 4, in, The arrangement position of the light emitting section in a plan view and the irradiation position of the light emitted from the light emitting section after being irradiated by the first lens have a positional relationship that is point-symmetrical with respect to the central axis of the first lens.

6. The light emitting module according to any one of claims 1 to 5, in, A plurality of second lenses are provided between the optical component and the first lens, and the plurality of second lenses are provided so as to overlap with the plurality of light emitting portions in a plan view and to form pairs with the plurality of light emitting portions.

7. The light emitting module according to claim 6, in, The variable mechanism moves the optical component and the plurality of second lenses integrally in a direction along a central axis of the first lens.

8. The lighting module according to any one of claims 1 to 7, in, There is a third lens between the optical component and the multiple light-emitting parts. The third lens is arranged to overlap with the multiple light-emitting parts in a top view and to form pairs with the multiple light-emitting parts respectively, and the third lens includes multiple light distribution parts that determine the light distribution of light from the multiple light-emitting parts.

9. The light emitting module according to claim 8, in, The variable mechanism integrally moves the optical component and the third lens including the plurality of light distribution portions in a direction along the central axis of the first lens.

10. The lighting module according to any one of claims 1 to 9, in, In the plan view, the second region is provided around the first region.

11. The lighting module according to any one of claims 1 to 10, in, The plurality of light emitting parts each have a light emitting surface and are arranged at equal intervals along at least one of a longitudinal direction and a transverse direction. The optical component includes a plurality of first regions that are paired with the light emitting surfaces of the plurality of light emitting units, respectively. The light emitting surface is arranged inside the first region in a plan view, The variable mechanism changes the distance δ between the light emitting unit and the optical component by relatively moving the light emitting unit and the optical component along the central axis of the first lens. The distance δ based on the relative movement of the light emitting unit and the optical member is expressed by the relationship of the following equation (1) or (2). [Formula 1] (d represents the distance between the centers of the adjacent light emitting portions in a plan view along one of the longitudinal direction and the lateral direction, and θ represents the half-value angle of directivity of the light emitted from the light emitting portion.) [Formula 2] (d represents the distance between the centers of adjacent light-emitting portions in the top view along one of the longitudinal direction and the lateral direction, p represents the width of the first region along the longitudinal direction and the lateral direction in the top view, and θ represents the half-value angle of directivity of light emitted from the light-emitting portion. ) 12. The lighting module according to any one of claims 1 to 11, in, The optical component includes a plurality of the first regions and a plurality of the second regions.

13. The lighting module according to any one of claims 1 to 12, in, The first region includes at least one of a transmission portion that transmits light emitted from the light emitting portion, a color filter that transmits light of a portion of wavelengths among the light emitted from the light emitting portion, and a wavelength conversion material that converts the light emitted from the light emitting portion into light of the portion of wavelengths, The second region includes at least one of a transmissive portion that transmits the light emitted from the light-emitting portion, a color filter that transmits light of other wavelengths different from the light of the part of wavelengths in the light emitted from the light-emitting portion, and a wavelength conversion material that converts the light emitted from the light-emitting portion into the light of the other wavelengths.

Images