Lighting module, device with lighting module, lighting module unit, lighting system and lighting method

Abstract

An illumination module projects a projection pattern onto a projection surface. The illumination module includes a light source, an optical system axially facing the light source, a housing holding the light source and the optical system, a cover partially covering the housing, and a circuit board between the housing and the cover. The circuit board is at least partially between an exit end of the optical system in the axial direction and the light source.

Description

Technical Field

[0001] This disclosure relates to lighting modules, devices with lighting modules, lighting module units, lighting systems, and lighting methods. Background Technology

[0002] As described in Patent Document 1 (JP2016-90318A), an illumination device for projecting a projection pattern onto a projection surface is known. The illumination device is useful for projecting a projection pattern onto a projection surface in conjunction with the operation of other devices.

[0003] In this application, ease of use is improved if the lighting module used to project the pattern onto the projection surface can be assembled into or installed into other devices that work with it. Summary of the Invention

[0004] The purpose of this disclosure is to provide a lighting module suitable for assembly into or installation in other devices.

[0005] In one embodiment of this disclosure, the first lighting module is a lighting module that projects a projected pattern onto a projection surface, wherein... The lighting module includes: A light source, which emits light; An optical system that faces the light source along the axial direction of the illumination module; A housing that holds the light source and the optical system; and The circuit board is electrically connected to the light source. Along the axial direction, the circuit board is at least partially located between the light source and the emitting end of the optical system, wherein light emitted from the light source is emitted from the emitting end of the optical system.

[0006] In one embodiment of this disclosure, the second lighting module is a lighting module that projects a projected pattern onto a projection surface, wherein... The lighting module includes: A light source, which emits light; An optical system that faces the light source along the axial direction of the illumination module; A housing that holds the light source and the optical system; and The circuit board is electrically connected to the light source. The circuit board includes a socket that contacts and is electrically connected to the terminals of the light source. The light source is located axially between the circuit board and the optical system.

[0007] According to this disclosure, it is possible to obtain lighting modules suitable for assembly into or installation in other devices. Attached Figure Description

[0008] Figure 1A This is a diagram used to illustrate one embodiment, showing an example of a device with a lighting module.

[0009] Figure 1B It is shown Figure 1A A diagram of the device with a lighting module is shown.

[0010] Figure 2A This is a diagram showing another example of a device with a lighting module.

[0011] Figure 2B It is shown Figure 2A A diagram of the device with a lighting module is shown.

[0012] Figure 3 This is a diagram showing yet another example of a device with a lighting module.

[0013] Figure 4 This is a diagram showing yet another example of a device with a lighting module.

[0014] Figure 5 This is a diagram showing yet another example of a device with a lighting module.

[0015] Figure 6A It is shown Figures 1A to 5 The diagram shows an example of a block diagram of a device with a lighting module.

[0016] Figure 6B It is shown Figures 1A to 5 Another example of a block diagram of a device with a lighting module is shown.

[0017] Figure 6C It is shown Figures 1A to 5 The diagram shows another example of a block diagram of a device with a lighting module.

[0018] Figure 6D It is shown Figures 1A to 5 The diagram shows another example of a block diagram of a device with a lighting module.

[0019] Figure 7A It shows that it can be included Figures 1A to 5 A perspective view of an example of a lighting module in a device with a lighting module.

[0020] Figure 7B It shows from and Figure 7A Observing from different directions Figure 7A The diagram shows the lighting module.

[0021] Figure 8A It shows from and Figure 7A Observing from different directions Figure 7AThe diagram shows the lighting module.

[0022] Figure 8B It shows from and Figure 7A Observing from different directions Figure 7A The diagram shows the lighting module.

[0023] Figure 9 It is shown Figure 7A A cross-sectional view of an example of a first-mode lighting module shown.

[0024] Figure 10 It is along Figure 9 A cross-sectional view along the XX line.

[0025] Figure 11 yes Figure 9 A magnified view of a portion of the image.

[0026] Figure 12 Is with Figure 9 The corresponding figure is a cross-sectional view showing another example of the first method of the lighting module.

[0027] Figure 13 This is a diagram showing an example of a circuit board that can be included in a lighting module.

[0028] Figure 14 Is with Figure 9 The corresponding figure is a cross-sectional view showing yet another example of the first configuration of the lighting module.

[0029] Figure 15 It is along Figure 14 A cross-sectional view of the XV-XV line.

[0030] Figure 16 It is shown Figure 7A A cross-sectional view of an example of a second type of lighting module shown.

[0031] Figure 17 It is shown from the second side axially with the cover removed. Figure 16 The top view of the lighting module shown.

[0032] Figure 18 yes Figure 16 A magnified view of a portion of the image.

[0033] Figure 19 This is a diagram illustrating a variation of the lighting method, and it is a perspective view of the lighting system together with the lighting pattern observed on the projection plane.

[0034] Figure 20 It is shown Figure 19 The diagram shows a structural representation of an example lighting system.

[0035] Figure 21A It shows the composition Figure 19 A top view of an example projection pattern of the lighting pattern shown.

[0036] Figure 21B It shows the composition Figure 19 A top view of another example of the projection pattern of the lighting pattern shown.

[0037] Figure 21C It shows the composition Figure 19 A top view of yet another example of the projection pattern of the lighting pattern shown.

[0038] Figure 21D It shows the composition Figure 19 A top view of yet another example of the projection pattern of the lighting pattern shown.

[0039] Figure 21E It shows the composition Figure 19 A top view of yet another example of the projection pattern of the lighting pattern shown.

[0040] Figure 21F It shows the composition Figure 19 A top view of yet another example of the projection pattern of the lighting pattern shown.

[0041] Figure 21G It shows the composition Figure 19 A top view of yet another example of the projection pattern of the lighting pattern shown.

[0042] Figure 21H It shows the composition Figure 19 A top view of yet another example of the projection pattern of the lighting pattern shown.

[0043] Figure 22A This is a top view showing an example of the configuration of the lighting module unit.

[0044] Figure 22B This is a top view showing another example of the configuration of the lighting module unit.

[0045] Figure 23 It shows that it contains Figure 22A or Figure 22B The side view of the lighting system of the lighting module unit shown.

[0046] Figure 24A This is a diagram used to illustrate a variation of a lighting pattern and lighting system, showing a top view of the lighting system together with the lighting pattern observed on the projection plane.

[0047] Figure 24B It is shown Figure 24A The diagram shows a lighting system, in which the lighting system displays and Figure 24AThe lighting patterns shown are different lighting patterns.

[0048] Figure 24C It is shown Figure 24A The diagram shows a lighting system, in which the lighting system displays and Figure 24A and Figure 24B The lighting patterns shown are different lighting patterns.

[0049] Figure 25 This is a diagram used to illustrate another variation of the lighting pattern and lighting system, showing a top view of the lighting system together with the lighting pattern observed on the projection plane.

[0050] Figure 26 It is shown by Figure 25 The diagram shows the changes in the lighting pattern displayed by the lighting system. Detailed Implementation

[0051] One embodiment of this disclosure relates to the following <1> to <60> .

[0052] <1>

[0053] An illumination module projects a pattern onto a projection surface, wherein, The lighting module includes: A light source, which emits light; An optical system that faces the light source along the axial direction of the illumination module; A housing that holds the light source and the optical system; and The circuit board is electrically connected to the light source. Along the axial direction, the circuit board is at least partially located between the light source and the emitting end of the optical system, wherein light emitted from the light source is emitted from the emitting end of the optical system.

[0054] <2>

[0055] according to <1> The lighting module, wherein, The lighting module also includes an FPC that electrically connects the light source to the circuit board. The light source includes terminals that extend through the FPC. The terminal is electrically connected to the FPC.

[0056] <3>

[0057] according to <1> or <2> The lighting module, wherein, The lighting module also includes an FPC that electrically connects the light source to the circuit board. The FPC is mounted on the housing.

[0058] <4>

[0059] according to <1> to <3> The lighting module described in any one of the above, wherein, The housing includes a cylindrical portion and a bottom connected to the cylindrical portion. The cylindrical portion opens on a first side in the axial direction and connects to the bottom from a second side in the axial direction. The optical system is held inside the cylindrical portion. The light source is held at the bottom.

[0060] <5>

[0061] according to <4> The lighting module, wherein, The cylindrical portion includes a first cylindrical portion and a second cylindrical portion. The first cylindrical portion is located closer to the first side along the axial direction than the second cylindrical portion. The second cylindrical section is thinner than the first cylindrical section. The circuit board is mounted on the outside of the second cylindrical section.

[0062] <6>

[0063] according to <1> to <5> The lighting module described in any one of the above, wherein, The circuit board includes a substrate, and components and wiring disposed on the substrate. The substrate is oriented radially orthogonal to the axial direction.

[0064] <7>

[0065] according to <1> to <6> The lighting module described in any one of the above, wherein, The lighting module also includes a second circuit board. The circuit board and the second circuit board are arranged circumferentially separated from each other with an axis parallel to the said axis as the center.

[0066] <8>

[0067] according to <5> The lighting module, wherein, The circuit board is annular, with the second cylindrical portion penetrating through it.

[0068] <9>

[0069] according to <8> The lighting module, wherein, The circuit board includes a substrate, and components and wiring disposed on the substrate. The substrate is oriented toward the axial direction.

[0070] <10>

[0071] An illumination module projects a pattern onto a projection surface, wherein, The lighting module includes: A light source, which emits light; An optical system that faces the light source along the axial direction of the illumination module; A housing that holds the light source and the optical system; and The circuit board is electrically connected to the light source. The circuit board includes a socket that contacts and is electrically connected to the terminals of the light source. The light source is located axially between the circuit board and the optical system.

[0072] <11>

[0073] according to <10> The lighting module, wherein, In a projection toward a plane orthogonal to the said axis, the circuit board is located at the same position as the housing or inside the housing.

[0074] <12>

[0075] according to <10> or <11> The lighting module, wherein, The lighting module also includes a second circuit board, which is at least partially located between the emitting end of the optical system and the light source along the axial direction.

[0076] <13>

[0077] according to <7> or <12> The lighting module, wherein, The circuit board and the second circuit board are electrically connected using an FPC.

[0078] <14>

[0079] according to <10> to <13> The lighting module described in any one of the above, wherein, The lighting module is provided with a detachment suppression mechanism to prevent the socket from detaching from the terminal.

[0080] <15>

[0081] according to <1> to <14> The lighting module described in any one of the above, wherein, The light source includes a laser diode. The circuit board contains a driver IC that drives the laser diode.

[0082] <16>

[0083] according to <15> The lighting module, wherein, The driver IC contains multiple channels connected in parallel. Each of the multiple channels contains a component.

[0084] <17>

[0085] according to <1> to <16> The lighting module described in any one of the above, wherein, The circuit board is in contact with the housing.

[0086] <18>

[0087] according to <1> to <17> The lighting module described in any one of the above, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. The circuit board is in contact with the cover.

[0088] <19>

[0089] according to <1> to <18> The lighting module described in any one of the above, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. The lighting module is a lighting module that is assembled into or installed in other devices for use. At least one of the housing and the cover is fixed to the device.

[0090] <20>

[0091] according to <1> to <19> The lighting module described in any one of the above, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. The lighting module is a lighting module that is assembled into or installed in other devices for use. The cover includes a portion that contacts the device. The contact portion is located between the circuit board and the device.

[0092] <21>

[0093] according to <1> to <20> The lighting module described in any one of the above, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. At least one of the housing and the cover includes a mark indicating the orientation to be set.

[0094] <22>

[0095] according to <1> to <21> The lighting module described in any one of the above, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. The cover includes: a plate-shaped end portion facing the housing in the axial direction; and a cylindrical side portion facing the housing in a radial direction orthogonal to the axial direction.

[0096] <23>

[0097] according to <22> The lighting module, wherein, The lighting module is a lighting module that is assembled into or installed in other devices for use. The connector for electrical connection with the device is positioned offset from the center of the end.

[0098] <24>

[0099] according to <1> to <23> The lighting module described in any one of the above, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. In a projection toward a plane orthogonal to the said axis, the cover is located at the same position as the housing or inside the housing.

[0100] <25>

[0101] according to <1> to <24> The lighting module described in any one of the above, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. In a projection toward a plane orthogonal to the axis, the cover has a circular profile.

[0102] <26>

[0103] according to <1> to <25> The lighting module described in any one of the above, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. In a projection toward a plane orthogonal to the axis, the cover has a circular profile.

[0104] <27>

[0105] according to <1> to <26> The lighting module described in any one of the above, wherein, The optical system includes diffractive optical elements and a lens optical system.

[0106] <28>

[0107] according to <1> to <27> The lighting module described in any one of the above, wherein, The optical system includes a light-shielding mask and an imaging optical system.

[0108] <29>

[0109] A device with a lighting module, comprising: <1> to <28> The lighting module described in any one of the above; and An apparatus that assembles or installs the lighting module.

[0110] <30>

[0111] A lighting module unit, which has <1> to <28> Any of the multiple lighting modules described in any one of them, An illumination pattern is displayed on the projection surface by projecting multiple projection patterns from each of the plurality of illumination modules onto the projection surface.

[0112] <31>

[0113] A lighting module unit comprising multiple lighting modules, An illumination pattern is displayed on the projection surface by projecting multiple projection patterns from each of the multiple illumination modules onto the projection surface.

[0114] <32>

[0115] according to <30> or <31> The lighting module unit, wherein, The plurality of projection patterns are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

[0116] <33>

[0117] A lighting module unit, which has <1> to <28> Any of the multiple lighting modules described in any one of them, Multiple projection patterns projected from each of the plurality of lighting modules onto the projection surface are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

[0118] <34>

[0119] A lighting module unit comprising multiple lighting modules, Multiple projection patterns projected from each of the plurality of lighting modules onto the projection surface are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

[0120] <35>

[0121] according to <30> to <34> The lighting module unit described in any one of the above, wherein, Each of the plurality of projection patterns is a line.

[0122] <36>

[0123] according to <32> to <34> The lighting module unit described in any one of the above, wherein, On the projection surface, the plurality of projection patterns are separated from each other in the fourth direction.

[0124] <37>

[0125] according to <32> to <34> ,as well as <36> The lighting module unit described in any one of the above, wherein, The plurality of projection patterns includes a first outermost projection pattern, a second outermost projection pattern, and an intermediate projection pattern. The first outermost projected pattern is closest to the first side in the fourth direction. The second outermost projection pattern is closest to the second side in the fourth direction. The intermediate projection pattern is located in the fourth direction between the first outermost projection pattern and the second outermost projection pattern. At a certain position in the fifth direction, the first outermost projection pattern is brighter than the intermediate projection pattern, and the second outermost projection pattern is brighter than the intermediate projection pattern.

[0126] <38>

[0127] according to <32> to <34> , <36> as well as <37> The lighting module unit described in any one of the above, wherein, The plurality of projection patterns includes a first outermost projection pattern and a second outermost projection pattern. The first outermost projected pattern is closest to the first side in the fourth direction. The second outermost projection pattern is closest to the second side in the fourth direction. At a certain location in the fifth direction, the first outermost projection pattern is brighter than all other projection patterns except the second outermost projection pattern. At a certain location in the fifth direction, the second outermost projection pattern is brighter than all other projection patterns except the first outermost projection pattern.

[0128] <39>

[0129] according to <30> to <38> The lighting module unit described in any one of the above, wherein, Each of the plurality of lighting modules includes a light source and an optical system for adjusting the optical path of the light from the light source. The light source includes a laser diode.

[0130] <40>

[0131] according to <30> to <39> The lighting module unit described in any one of the above, wherein, Each of the plurality of lighting modules includes a light source and an optical system for adjusting the optical path of the light from the light source. The optical system includes one or more of the following: diffractive optical elements, microlens arrays, light diffusion elements, phosphors, and spatial light modulators.

[0132] <41>

[0133] according to <32> to <34> , <36> , <37> as well as <38> The lighting module unit described in any one of the above, wherein, One or more lighting modules included in the plurality of lighting modules are located opposite each other in the fifth direction.

[0134] <42>

[0135] according to <30> to <41> The lighting module unit described in any one of the above, wherein, The multiple lighting modules are located in different positions.

[0136] <43>

[0137] according to <30> to <42> The lighting module unit described in any one of the above, wherein, The multiple projection patterns are identical to each other.

[0138] <44>

[0139] according to <30> to <43> The lighting module unit described in any one of the above, wherein, The multiple projection patterns are all different from each other.

[0140] <45>

[0141] A lighting system comprising: <30> to <44> The lighting module unit described in any one of the above; A power supply for supplying power to the plurality of lighting modules; and Multiple controllers located between the plurality of lighting modules and the power supply, Each of the plurality of controllers enables the power supply from the power source to the corresponding lighting module included in the plurality of lighting modules to be regulated independently of the power supply from the power source to other lighting modules.

[0142] <46>

[0143] according to <45> The lighting system, wherein, Each of the plurality of controllers adjusts the presence and / or amount of power supply to the corresponding lighting module.

[0144] <47>

[0145] A lighting method, which has the function of using <30> to <44> The process of illuminating the projection surface using any one of the lighting module units described herein, wherein... In the lighting process, lighting patterns are displayed on the projection surface by projecting multiple projection patterns from the lighting module unit onto the projection surface.

[0146] <48>

[0147] An illumination method includes a step of illuminating a projection surface using an illumination module unit, wherein... In the lighting process, lighting patterns are displayed on the projection surface by projecting multiple projection patterns from the lighting module unit onto the projection surface.

[0148] <49>

[0149] according to <47> or <48> The lighting method, wherein, The plurality of projection patterns are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

[0150] <50>

[0151] A lighting method, which has the function of using <30> to <44> The process of illuminating the projection surface using any one of the lighting module units described herein, wherein... During the lighting process, multiple projection patterns are projected from the lighting module unit onto the projection surface. The plurality of projection patterns are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

[0152] <51>

[0153] An illumination method includes a step of illuminating a projection surface using an illumination module unit, wherein... During the lighting process, multiple projection patterns are projected from the lighting module unit onto the projection surface. The plurality of projection patterns are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

[0154] <52>

[0155] according to <47> to <51> The lighting method described in any one of the above, wherein, Each of the plurality of projection patterns is a line.

[0156] <53>

[0157] according to <49> to <51> The lighting method described in any one of the above, wherein, On the projection surface, the plurality of projection patterns are separated from each other in the fourth direction.

[0158] <54>

[0159] according to <49> to <51> as well as <53> The lighting method described in any one of the above, wherein, In the illumination process, the thickness and / or brightness of the illumination pattern are controlled by adjusting the number of the plurality of projection patterns.

[0160] <55>

[0161] according to <49> to <51> , <53> as well as <54> The lighting method described in any one of the above, wherein, During the illumination process, a portion of the projection patterns included in the plurality of projection patterns are made to flicker.

[0162] <56>

[0163] according to <55> The lighting method, wherein, During the period when one portion of the projected pattern is blinking, another portion of the projected pattern contained within the plurality of projected patterns is illuminated. The other portion of the projection pattern includes: a projection pattern on a first side in the fourth direction relative to the portion of the projection pattern; and a projection pattern on a second side in the fourth direction relative to the portion of the projection pattern.

[0164] <57>

[0165] according to <49> to <51> as well as <53> to <56> The lighting method described in any one of the above, wherein, The plurality of projection patterns includes a first outermost projection pattern, a second outermost projection pattern, and an intermediate projection pattern. The first outermost projected pattern is closest to the first side in the fourth direction. The second outermost projection pattern is closest to the second side in the fourth direction. The intermediate projection pattern is located in the fourth direction between the first outermost projection pattern and the second outermost projection pattern. At a certain position in the fifth direction, the first outermost projection pattern is brighter than the intermediate projection pattern, and the second outermost projection pattern is brighter than the intermediate projection pattern.

[0166] <58>

[0167] according to <49> to <51> as well as <53> to <57> The lighting method described in any one of the above, wherein, The plurality of projection patterns includes a first outermost projection pattern and a second outermost projection pattern. The first outermost projected pattern is closest to the first side in the fourth direction. The second outermost projection pattern is closest to the second side in the fourth direction. At a certain location in the fifth direction, the first outermost projection pattern is brighter than all other projection patterns except the second outermost projection pattern. At a certain location in the fifth direction, the second outermost projection pattern is brighter than all other projection patterns except the first outermost projection pattern.

[0168] <59>

[0169] according to <49> to <51> as well as <53> to <58> The lighting method described in any one of the above, wherein, One or more projection patterns contained in the plurality of projection patterns and one or more other projection patterns contained in the plurality of projection patterns are projected onto the projection surface from positions that are opposite to each other in the fifth direction.

[0170] <60>

[0171] according to <49> to <51> as well as <53> to <59> The lighting method described in any one of the above, wherein, One or more of the multiple projection patterns are projected onto the projection surface from two or more positions that are opposite each other in the fifth direction.

[0172] The following is a detailed description of one embodiment of this disclosure. In the accompanying drawings, for ease of understanding, the scale and aspect ratios relative to the actual scale and aspect ratios have been appropriately altered and exaggerated. Some structures shown in the drawings are sometimes omitted in other drawings. The scale and aspect ratios may differ between drawings.

[0173] In this specification, the terms “board (substrate)”, “sheet” and “film” are not distinguished from each other based solely on differences in terminology.

[0174] In this specification, the normal direction of a plate-like (sheet-like, film-like) component refers to the direction parallel to the normal or perpendicular line of the plate-like (sheet-like, film-like) component being considered. "Plate-like (sheet-like, film-like) surface" refers to the surface that coincides with the plate-like (sheet-like, film-like) component being considered when viewed as a whole and macroscopically.

[0175] In this specification, multiple candidates for upper limits and multiple candidates for lower limits of a numerical range may be stated in different sentences. In this statement, the numerical range can be constructed by combining any candidate for an upper limit and any candidate for a lower limit. As an example, consider the following statement: "Parameter B can be above A1, above A2, or above A3. Parameter B can be below A4, below A5, or below A6." In this example, the numerical range of parameter B can be above A1 and below A4, above A1 and below A5, above A1 and below A6, above A2 and below A4, above A2 and below A5, above A2 and below A6, above A3 and below A4, above A3 and below A5, or above A3 and below A6.

[0176] In some of the accompanying drawings, the axial direction AD, circumferential direction CD, and first to sixth directions D1 to D6, which are common to each other, are indicated by arrows with the same symbols in each drawing. The axial direction AD, circumferential direction CD, and first to third directions D1 to D3 are defined with the lighting module 10 as a reference. The fourth to sixth directions D4 to D6 are defined with the lighting module 10 as a reference. In each direction, the end of the arrow is the first side. In each direction, the side opposite to the first side, i.e., the base of the arrow, is the second side. For example, as shown... Figure 8AAs shown, an arrow pointing from the back of the paper towards the front, perpendicular to the plane of the drawing, is indicated by a circle with a dot inside. For example, as... Figure 8B As shown, an arrow pointing from the front of the paper to the back of the paper in a direction perpendicular to the plane of the drawing is indicated by a circle with an "×" inside.

[0177] Figures 1A to 6D These are diagrams illustrating several specific examples of the device 105 with a lighting module according to this embodiment. (See diagram for example.) Figures 1A to 6D As shown, the device 105 with an illumination module includes a device 110 and an illumination module 10. The illumination module 10 can be assembled into the device 110. The illumination module 10 can be built into the device 110. The illumination module 10 can also be mounted on the device 110. The illumination module 10 projects a projection pattern 101 onto the projection surface 100. The illumination module 10 emits projection light L that constitutes the projection pattern 101.

[0178] According to this embodiment, as described below, the lighting module 10 is given a structure suitable for assembly or installation in the device 110. More specifically, the lighting module 10 can be miniaturized. Therefore, the degree of freedom in assembling or installing the lighting module 10 in the device 110 is increased. Furthermore, the circuit board 70A contained in the lighting module 10 can be protected from physical contact or impact by the cover 60. Moreover, the circuit board 70A contained in the lighting module 10 can be electromagnetically shielded by the cover 60. Therefore, the reliability of the operation of the lighting module 10 can be improved.

[0179] like Figures 9 to 18 As shown, the lighting module 10 may include a single circuit board 70A, or it may include multiple circuit boards 70A and 70B. When the lighting module 10 is as follows... Figure 10 , Figure 14 , Figure 16 , Figure 18 When multiple circuit boards are included as shown, the circuit board 70A is sometimes also referred to as the first circuit board 70A.

[0180] Device 110 is not particularly limited. Device 110 can have functions or effects related to the projected pattern 101 through the lighting module 10. Device 110 can also apply functions or effects to the projection surface 100. Device 110 can be a safety door 110A, a lighting device 110B, a display device 110C, a moving body 110D, or a detection device 110E. Moving body 110D can be unmanned or manned. Examples of moving bodies 110D include ships, airplanes, drones, railway vehicles, and automobiles.

[0181] The projection surface 100 is not particularly limited. The projection surface 100 can be the surface on which the device 110 applies its function or action. The projection surface 100 can be the surface surrounding the part of the device 110 that applies its function or action. Examples of projection surfaces 100 include building surfaces, road surfaces, parking lots for moving objects, water surfaces, ground surfaces, and device surfaces. A building surface can be an exterior wall or a roof. Examples of building surfaces include ground surfaces, walls, and ceilings. There is no particular limitation on the building. A building can be a school, company, factory, assembly place, auditorium, stadium, arena, meeting place, etc.

[0182] The projected pattern 101 is not particularly limited. The projected pattern 101 can be various patterns. The projected pattern 101 can be a pattern related to the function or role of the device 110. The projected pattern 101 can be a pattern for displaying information. The projected pattern 101 can be a single pattern or multiple patterns. The projected pattern 101 can contain more than one of the following patterns: text, graphics, colored patterns, symbols, marks, lines, illustrations, characters, and pictographs. Lines can be straight lines, curved lines, or a combination of straight lines and curved lines. Lines can be dashed lines.

[0183] exist Figure 1A and Figure 1B In the example shown, device 110 is safety door 110A. Safety door 110A includes... Figure 1A The permitted passage status shown, and Figure 1B The restricted access status is shown. Security gate 110A can allow passage based on identification documents, etc.

[0184] In the illustrated example, two lighting modules 10 are assembled onto a security gate 110A. In this example, the projection surface 100 is the ground or floor surface that a pedestrian traverses after passing through the security gate 110A. The lighting modules 10 display a projected pattern 101 corresponding to the authentication result of the security gate 110A. Figure 1A In the permitted passage state shown, the lighting module 10 projects arrow markings that encourage pedestrians to cross as projection pattern 101 onto the projection surface 100. Figure 1B In the restricted passage state shown, the lighting module 10 projects the prohibition line mark that prompts pedestrians to stop moving as a projection pattern 101 onto the projection surface 100.

[0185] exist Figure 2A and Figure 2B In the example shown, device 110 is a lighting device. Lighting module 10 is assembled into lighting device 110B. Figure 2A As shown, a lighting device illuminates the road. In this example, projection surface 100 is the road surface, i.e., the road surface, illuminated by lighting device 110B. Figure 2BIn the example shown, there are obstacles on the road that impede traffic. In the example illustrated, road construction is underway. Figure 2B As shown, the lighting module 10 can project the arrow markings that prompt lane changes as projection patterns 101 onto the projection surface 100.

[0186] exist Figure 3 In the example shown, device 110 is display device 110C. The purpose of display device 110C is not particularly limited. Illumination module 10 is assembled into display device 110C. Figure 3 In the example shown, display device 110C can display the driver of a car driving on a road. In this example, projection surface 100 is the road surface. Figure 3 In the example shown, the lighting module 10 displays a central dividing line to alert the driver. The lighting module 10 can project the linear pattern as a projection pattern 101 onto the projection surface 100.

[0187] exist Figures 2A to 3 In the example shown where the driving surface of the moving body is used as the projection surface 100, the lighting module 10 can project a projection pattern 101 representing driving conditions such as speed limits onto the projection surface 100. The lighting module 10 can also project linear markers that help measure vehicle distances onto the projection surface 100 as the projection pattern 101.

[0188] exist Figure 4 In the example shown, device 110 can be a movable body 110D. The lighting module 10 is assembled onto the movable body 110D. Figure 4 The moving object 110D shown is a car. Figure 4 In the example shown, the lighting module 10 can display pedestrians crossing beside the road. In this example, the projection surface 100 is the road surface. Figure 4 In the example shown, the lighting module 10 displays a notification of an approaching vehicle to alert pedestrians to their surroundings. The lighting module 10 can project a linear pattern as a projection pattern 101 onto the projection surface 100.

[0189] exist Figure 5 In the example shown, device 110 can be a detection device 110E such as a sensor. Illumination module 10 is assembled into detection device 110E. Figure 5 In the example shown, the detection device 110E can detect the approach or presence of a person. The detection device 110E may include a camera. Figure 5 In the example shown, the lighting module 10 can display a person detected by the detection device 110E. In this example, the projection surface 100 can be the ground of the location where the detection device 110E is installed, or the walls, floor, ceiling, etc. of the building where the detection device 110E is installed. Figure 5In the example shown, the lighting module 10 displays a guide for a person detected by the detection device 110E. The lighting module 10 can project arrow markings indicating a movement route as a projection pattern 101 onto the ground, which serves as the projection surface 100.

[0190] Figures 6A to 6D A block diagram of a device 105 with a lighting module is shown.

[0191] like Figure 6A and Figure 6B As shown, the device 105 with a lighting module includes a lighting module 10 and a device 110. The lighting module 10 can be as follows: Figure 6A As shown, it is assembled in device 110. The lighting module 10 can also be assembled as follows: Figure 6B It is shown to be installed on device 110.

[0192] like Figure 6A and Figure 6B As shown, device 110 may include a housing 111, a device 112, a power supply unit 113, and a control unit 114. Device 112, power supply unit 113, and control unit 114 may be housed within the housing 111. Device 112 is powered by the power supply unit 113. Device 112 is controlled by the control unit 114. The control unit 114 may include an interface for accepting manual operation.

[0193] exist Figure 6A and Figure 6B In the example shown, the lighting module 10 can be electrically connected to the power supply unit 113 and the control unit 114. The lighting module 10 can be powered by the power supply unit 113. The operation of the lighting module 10 can be controlled by the control unit 114. The lighting module 10 can receive input signals from the control unit 114 and project a projection pattern 101 onto the projection surface 100.

[0194] Because the lighting module 10 does not have a dedicated power supply unit, it can be miniaturized. Because the lighting module 10 does not have a dedicated power supply unit, it can be lightweight. Because the lighting module 10 does not have a dedicated control unit, it can be miniaturized. Because the lighting module 10 does not have a dedicated control unit, it can be lightweight.

[0195] The small and lightweight lighting module 10 can be applied to a variety of devices. The lighting module 10, which does not have a dedicated control unit, can also be used for unattended applications where manual operation is not required. As a result, the application range of the lighting module 10 can be significantly expanded.

[0196] like Figure 6A As shown, part or all of the lighting module 10 assembled in the device 110 can be housed in the housing 111. Figure 6AIn the example shown, the entire lighting module 10 can be configured within the empty space of the housing 111. The lighting module 10 is preferably miniaturized. Furthermore, the device 112, power supply unit 113, and control unit 114 are located near the lighting module 10. Preferably, the circuit board 70A of the lighting module 10 (described later) is shielded from electromagnetic noise from these components.

[0197] exist Figure 6B In the example shown, the lighting module 10 is not configured within the housing 111. The lighting module 10 is located outside the housing 111 and mounted on the housing 111. Figure 6B In the example shown, the lighting module 10 is preferably miniaturized. Preferably, the circuit board 70A of the lighting module 10 is shielded against electromagnetic noise.

[0198] Figure 6C The illustrated device 105 with a lighting module includes, in addition to the lighting module 10 and the device 110, a control device 117. Figure 6C In the example shown, device 110 may not include control unit 114. Control device 117 may be located remotely from device 110. Control device 117 may be electrically connected to device 110 and lighting module 10 via wired or wireless means. Control device 117 may have an interface for accepting manual operation. The operation of device 110 and lighting module 10 can be controlled by control device 117. Figure 6C In the example shown, the lighting module 10 is preferably miniaturized. Preferably, the circuit board 70A of the lighting module 10 is shielded against electromagnetic noise.

[0199] Figure 6D The illustrated device 105 with a lighting module includes, in addition to the lighting module 10 and the device 110, a power supply device 118. Figure 6D In the example shown, device 110 may not include a power supply unit 113. Device 110 and lighting module 10 may be powered by power supply device 118. Power supply device 118 may be located remotely from device 110. Power supply device 118 may be electrically connected to device 110 and lighting module 10 via wired or wireless means. In this example, it is also preferable to miniaturize the lighting module 10. Preferably, the circuit board 70A of the lighting module 10 is shielded against electromagnetic noise.

[0200] exist Figure 6C and Figure 6D In the example shown, the lighting module 10 may be located outside the housing 111 and mounted on the housing 111.

[0201] and Figure 6A and Figure 6BUnlike the example shown, the device 105 with a lighting module may include a control device 117 and a power supply device 118 in addition to the lighting module 10 and the device 110. In this example, the device 110 may not include a power supply unit 113. The device 110 may not include a control unit 114. The device 110 and the lighting module 10 may be powered by the power supply device 118. The operation of the device 110 and the lighting module 10 may be controlled by the control device 117.

[0202] Next, the lighting module 10 will be described.

[0203] like Figure 7A and Figure 7B As shown, the lighting module 10 can generally be cylindrical in shape. Figure 7A and Figure 7B In the example shown, the illumination module 10 includes a central axis L1. The central axis L1 extends from the light source 20 toward the emission end 25a of the optical system 25 (described later). The central axis L1 passes through the center of the generally cylindrical illumination module 10. The illumination module 10 can be rotationally symmetric about the central axis L1. Figure 8A and Figure 8B As shown, in the projection toward the plane orthogonal to the axis AD, the outer edge of the lighting module 10 can be circular.

[0204] Axial AD is the direction parallel to the central axis of the lighting module 10.

[0205] In the illustrated example, the first direction D1 is parallel to the axis AD. The second direction D2 and the third direction D3 are orthogonal to the first direction D1. Both the second direction D2 and the third direction D3 are radial directions RD orthogonal to the axis AD. The second direction D2 and the third direction D3 are mutually orthogonal.

[0206] like Figures 9 to 11 As shown, the lighting module 10 includes a light source 20, an optical system 25, a housing 30, a cover 50, and a circuit board 70A.

[0207] Light source 20 emits light. Light source 20 emits light after being powered. Light source 20 can be a device, component, apparatus, etc., capable of emitting light. Light source 20 is not particularly limited. Light source 20 may include a light-emitting diode, also known as an LED. Light source 20 can emit coherent light. Coherent light is light with wavelength and phase aligned. Light source 20 may include a laser diode, also known as an LD, as illustrated in the example.

[0208] In the illustrated example, the light source 20 includes a light-emitting portion 21 and a terminal 22. The light source 20 can be powered externally at the terminal 22. The light source 20 can also receive an input signal at the terminal 22. The terminal 22 can be a lead. The terminal 22 can be a pin protruding from the light-emitting portion 21 as shown in the illustrated example. The light-emitting portion 21 of the light source 20, which is a laser diode, can be a semiconductor. The light-emitting portion 21 can include a light-emitting surface 21a that emits light. The terminal 22 is connected to the surface of the light-emitting portion 21 facing the side opposite to the light-emitting surface a.

[0209] like Figure 9 and Figure 11 As shown, in the illustrated example, the light source 20 is located on the central axis L1. The light-emitting surface 21a faces a first side along the axial direction AD. In the illustrated example, the terminal 22 extends from the light-emitting portion 21 towards a second side along the axial direction AD.

[0210] Optical system 25 acts on the light emitted from light source 20. Optical system 25 modulates the light path emitted from light source 20. Optical system 25 generates projection light incident on the illuminated area of ​​projection surface 100. Optical system 25 shapes the light from light source 20 to generate projection light L. The illuminated area illuminated by the projection light is observed by the observer as projection pattern 101. Optical system 25 emits projection light L from its exit end 25a. Optical system 25 faces light source 20 in the first direction D1. Optical system 25 is located downstream along the light path emitted from light source 20. Exit end 25a constitutes the light emitting surface of optical system 25. Exit end 25a is located at the downstream end of optical system 25 along the light path emitted from light source 20. In the illustrated example, exit end 25a constitutes the light emitting surface of illumination module 10. It is located at the downstream end of illumination module 10 along the light path emitted from light source 20. Optical system 25 may be located on central axis L1. Along the light path emitted from the light source 20, the exit end 25a is located at the downstream end of the optical system 25. The exit end 25a can be located on the central axis L1.

[0211] Optical system 25 may include patterned optical system 26 and lens system 27. Patterned optical system 26 shapes light from light source 20 corresponding to a desired projection pattern 101. For example, patterned optical system 26 may include a diffractive optical element 26A. Lens system 27 has lens functions such as imaging and projection. Lens system 27 may include a single lens or multiple lenses. Multiple lenses may be arranged along axis AD. The optical axes of the lenses included in lens system 27 may be parallel to axis AD. As shown, the optical axes of the lenses included in lens system 27 may be located on central axis L1.

[0212] exist Figure 9 and Figure 11 In the example shown, lens system 27 deforms the light emitted from light source 20 into a broadened parallel beam. That is, lens system 27 functions as collimating optical system 27A. For example, lens system 27 may include a first lens 28A, a second lens 28B, and a third lens 28C arranged along the optical path of the light emitted from light source 20. The first lens 28A, second lens 28B, and third lens 28C may be arranged from the second side to the first side along axis AD. For example, the first lens 28A may deform coherent light into a diverging beam, the second lens 28B may reshape the diverging beam, and the third lens 28C may reshape the diverging beam back into a parallel beam.

[0213] The diffractive optical element 26A is a component that applies diffraction to light emitted from the light source 20. The diffractive optical element 26A diffracts the light from the light source 20 to generate projection light L. The projection light L is directed toward the illuminated area 103 on the projection surface 100. The projection light L is incident on the illuminated area 103, thereby displaying a projection pattern 101 on the projection surface 100.

[0214] The diffractive optical element 26A may include a holographic element. A holographic element is a holographic optical element (HOE). A holographic element can also be used as the diffractive optical element 26A. By using a holographic element as the diffractive optical element, the diffraction characteristics of the diffractive optical element 26A can be easily designed. It is relatively easy to design a holographic element that can illuminate only the entire area on the projection plane 100 that has a predetermined position, outline shape, size, and orientation. The diffractive optical element 26A can also be a computer-generated hologram (CGH). A computer-generated hologram is created by calculating a structure with arbitrary diffraction characteristics on a computer.

[0215] The diffractive optical element 26A may comprise multiple elemental diffractive optical elements. Each elemental diffractive optical element, for example, is a holographic element and can be configured similarly to the diffractive optical element 26A described above. Coherent light diffracted by the multiple elemental diffractive optical elements is irradiated onto the same illuminated area 103. That is, the light diffracted by each elemental diffractive optical element is irradiated onto the entire illuminated area on the projection surface 100. With such a diffractive optical element, light directed toward each position within the illuminated area can be dispersed from the multiple elemental diffractive optical elements contained in the diffractive optical element 26A. As a result, it is possible to suppress excessive brightness at each position on the diffractive optical element 26A, allowing the diffractive optical element 26A to be observed uniformly and brightly. Furthermore, when laser light is incident on the diffractive optical element 26A, laser safety can be improved.

[0216] Each element of the diffractive optical element can be configured to have the same diffraction characteristics as the others. However, to achieve higher precision illumination, each element of the diffractive optical element can also be given individually designed diffraction characteristics based on its placement within the diffractive optical element 26A. According to this example, by adjusting the diffraction characteristics of each element of the diffractive optical element according to its placement differences from other element diffractive optical elements, it is possible to precisely direct the diffracted light towards the entire illuminated area on the projection surface 100.

[0217] according to Figure 9 and Figure 11 In the example shown, the collimating optical system 27A and the diffractive optical element 26A can accurately project the projection light L onto the illuminated area 103 on the projection surface 100. Thus, a projection pattern 101 with a desired shape can be accurately projected onto the projection surface 100.

[0218] However, the structure of the optical system 25 is not limited to Figures 9 to 11 The example shown. (e.g.) Figure 12 As shown, the optical system 25 may also include a light-shielding mask 26B and a projection optical system 27B. According to... Figure 12 The example shown can also project the projection pattern 101 onto the projection surface 100.

[0219] exist Figure 12 In the example shown, the light-shielding mask 26B includes a light-shielding portion 29a and a light-transmitting portion 29b. The light-transmitting portion 29b may be an opening provided on the light-shielding plate constituting the light-shielding portion 29a. Since the light-transmitting portion 29b has a shape corresponding to the projection pattern 101, the light passing through the light-shielding mask 26B is shaped into a pattern corresponding to the projection pattern 101.

[0220] The projection optical system 27B images the desired pattern obtained through the light-blocking mask 26B onto the projection surface 100. The projection optical system 27B may include multiple lenses. The projection optical system 27B can magnify the pattern of the light-transmitting portion 29b and project it onto the projection surface 100.

[0221] Optical system 25 can replace diffractive optical element 26A or include one or more of a microlens array, a light diffuser, a phosphor, and a spatial light modulator based on diffractive optical element 26A. One or more of the microlens array, light diffuser, phosphor, and spatial light modulator can function as patterned optical system 26.

[0222] like Figure 9 As shown, the optical system 25 may include a cover component 24A that protects the diffractive optical element 26A or the patterned optical system 26.

[0223] The diffractive optical element 26A and the cover member 24A are arranged in this order from the first side to the second side along the axial direction AD. A gap may be provided between the diffractive optical element 26A and the cover member 24A along the axial direction AD. By providing a gap, condensation on the surface of the diffractive optical element 26A facing the cover member 24A can be suppressed. In the illustrated example, the exit end 25a is composed of the diffractive optical element 26A.

[0224] exist Figure 12 In the example shown, the optical system 25 may include a second cover component 24B in addition to the first cover component 24A. The second cover component 24B can be omitted.

[0225] The housing 30 holds the light source 20. The housing 30 houses the optical system 25. The optical system 25 is protected by the housing 30 from physical contact or impact. The housing 30 properly maintains the relative positions between the components contained in the optical system 25. The housing 30 properly maintains the relative positions between the light source 20 and the optical system 25.

[0226] like Figure 9 As shown, the housing 30 may include a cylindrical portion 31 and a bottom 38 connected to the cylindrical portion 31. The cylindrical portion 31 is cylindrical. The cylindrical portion 31 has openings on both sides along the axial direction AD. The bottom 38 can be connected from the second side of the cylindrical portion 31 along the axial direction AD. Figure 9 As shown, the bottom 38 can at least partially close the opening of the second side opening of the cylindrical portion 31 in the axial direction AD.

[0227] In the illustrated example, the bottom 38 has a hole 38a at a position that forms the central axis L1. In the illustrated example, the light source 20 is held within the hole 38a. The hole 38a is closed by the light source 20.

[0228] The cylindrical portion 31 includes an inner surface 31a and an outer surface 31b. The optical system 25 is mounted on the inner surface 31a and held inside the cylindrical portion 31.

[0229] The cylindrical portion 31 includes an end cylindrical portion 32, a first cylindrical portion 33, and a second cylindrical portion 34. The end cylindrical portion 32, the first cylindrical portion 33, and the second cylindrical portion 34 are arranged in this order from a first side to a second side along the axial direction AD.

[0230] like Figure 9 As shown, the second cylindrical portion 34 is thinner than the first cylindrical portion 33. The width of the second cylindrical portion 34 along the radial direction RD can be smaller than the width of the first cylindrical portion 33 along the radial direction RD. The outer surface 31b of the second cylindrical portion 34 can be located at the same position as the outer surface 31b of the first cylindrical portion 33, or more inwardly than the outer surface 31b of the first cylindrical portion 33, in any radial direction RD. In projection toward a plane orthogonal to the axial direction AD, the outer contour of the second cylindrical portion 34 can be located at the same position as the outer contour of the first cylindrical portion 33, or more inwardly than the outer contour of the first cylindrical portion 33. In projection toward a plane orthogonal to the axial direction AD, the outer contour of the second cylindrical portion 34 can be located more inwardly than the outer contour of the first cylindrical portion 33. Figure 10 As shown, radial RD refers to the direction orthogonal to the central axis L1.

[0231] like Figure 9 As shown, the first cylindrical portion 33 is thinner than the end cylindrical portion 32. The width of the first cylindrical portion 33 along the radial direction RD can be smaller than the width of the end cylindrical portion 32 along the radial direction RD. The outer surface 31b of the first cylindrical portion 33 can be located at the same position as the outer surface 31b of the end cylindrical portion 32 or more inwardly along any radial direction RD. In projection toward a plane orthogonal to the axial direction AD, the outer contour of the first cylindrical portion 33 can be located at the same position as the outer contour of the end cylindrical portion 32 or more inwardly. In projection toward a plane orthogonal to the axial direction AD, the outer contour of the first cylindrical portion 33 can be located more inwardly than the outer contour of the end cylindrical portion 32.

[0232] The inner side of the radial direction RD refers to the side closer to the central axis L1 on the radial direction RD. The outer side of the radial direction RD refers to the side farther away from the central axis L1 on the radial direction RD.

[0233] like Figure 9As shown, the housing 30 may include an end step portion 35a located axially AD between the end cylindrical portion 32 and the first cylindrical portion 33. The end step portion 35a may extend along the entire circumference CD centered on the central axis L1. That is, the end step portion 35a may be circumferential along the circumferential direction CD. The housing 30 may also include an intermediate step portion 35b located axially AD between the first cylindrical portion 33 and the second cylindrical portion 34. The intermediate step portion 35b may extend along the entire circumference CD centered on the central axis L1. That is, the intermediate step portion 35b may be circumferential along the circumferential direction CD. Figure 10 As shown, the circumferential direction CD refers to the circumferential direction centered on the central axis L1.

[0234] like Figure 9 As shown, the housing 30 may include a plurality of annular grooves 36 extending in the circumferential direction CD in the end cylindrical portion 32. In the illustrated example, two annular grooves 36 are provided on the outer surface 31b of the end cylindrical portion 32. The two annular grooves 36 are separated in the axial direction AD. The two annular grooves 36 can function as anti-slip elements when holding the lighting module 10.

[0235] exist Figure 9 In the example shown, housing 30 includes a first housing component 41, a second housing component 42, and a third housing component 43. The first housing component 41, the second housing component 42, and the third housing component 43 are arranged in this order from a first side to a second side along the axial direction AD. The third housing component 43 forms part of the end cylinder 32, the first cylinder 33, and the second cylinder 34. The third housing component 43 also forms the bottom 38. The lens system 27 of the optical system 25 is held inside the third housing component 43.

[0236] The second housing component 42 is plate-shaped. The second housing component 42 includes a hole 42a at a position that forms the central axis L1. The hole 42a forms part of the inner surface 31a of the housing 30. The second housing component 42 holds the diffractive optical element 26A and the cover component 24A within the hole 42a.

[0237] The first housing component 41 is plate-shaped. The first housing component 41 includes a hole 41a at a location forming the central axis L1. The hole 41a faces the diffractive optical element 26A and the cover component 24A in the first direction D1. The diffractive optical element 26A is exposed within the hole 41a. The hole 41a is smaller than the diffractive optical element 26A. Therefore, the diffractive optical element 26A and the cover component 24A will not detach from the hole 41a. The diffractive optical element 26A and the cover component 24A are stably held in the housing 30.

[0238] The first housing component 41, the second housing component 42, and the third housing component 43 can be made of resin or metal. The first housing component 41, the second housing component 42, and the third housing component 43 can be made of aluminum alloy that has undergone aluminum anodizing treatment.

[0239] like Figure 9 As shown, the first housing component 41, the second housing component 42, and the third housing component 43 can also be connected to each other using fasteners 47 such as screws. Alternatively, they can be connected to each other using adhesive. The fasteners 47 can also be special screws that require special tools other than ordinary Phillips screwdrivers or flathead screwdrivers during operation.

[0240] exist Figure 12 In the example shown, the first housing component 41 and the second housing component 42 can be omitted. In this example, the first cover component 24A and the second cover component 24B held by the first housing component 41 and the second housing component 42 can also be omitted.

[0241] Cover 50 partially covers housing 30. Cover 50 can cover housing 30 from a second side along the axial direction AD.

[0242] The cover 50 may be a cylindrical shape in which the opening on the second side in the first direction D1 is closed. The cover 50 may also be a cylindrical shape in which the opening on the second side in the first direction D1 is closed. In projection toward a plane orthogonal to the axial direction, the cover 50 may have a circular profile. Similarly, in projection toward a plane orthogonal to the axial direction, the housing 30 may have a circular profile.

[0243] like Figure 9 and Figure 10 As shown, the cover 50 may include a side portion 51 and an end portion 52. The side portion 51 may be cylindrical. The side portion 51 may be square. The end portion 52 may be plate-shaped. The end portion 52 may close the opening on the second axial side of the side portion 51.

[0244] In the illustrated example, side 51 and end 52 are configured as separate components. Side 51 and end 52 can be made of resin or metal, respectively. Side 51 and end 52 can also be made of anodized aluminum alloy.

[0245] like Figure 8B and Figure 9As shown, the side portion 51 and the end portion 52 can be connected to each other using fasteners 53 such as screws. The side portion 51 and the end portion 52 can also be connected to each other using adhesive. The side portion 51 and the end portion 52 can be connected to each other using fasteners 53 such as screws and adhesive. The fasteners 53 can also be special screws that require special tools other than ordinary Phillips screwdrivers or flathead screwdrivers during operation.

[0246] like Figure 9 and Figure 10 As shown, side portion 51 may at least partially face housing 30 in the radial direction RD. In this example, a gap may be formed between housing 30 and cover 50 in the radial direction RD. End portion 52 may face housing 30 in the axial direction AD. In this example, a gap may be formed between housing 30 and cover 50 in the axial direction AD.

[0247] exist Figure 9 In the example shown, the end of the side portion 51 on the first side in the axial direction AD is located on the end of the first cylindrical portion 33 of the housing 30 on the second side in the axial direction AD. The inner surface of the side portion 51 contacts the outer surface 31b of the first cylindrical portion 33. The inner surface of the side portion 51 may make circumferential contact with the outer surface 31b of the first cylindrical portion 33 along the entire length of the circumferential direction CD.

[0248] like Figure 10 As shown, the outer width of the second cylindrical portion 34 along the radial direction RD can be smaller than the inner width of the side portion 51 along the radial direction RD. The outer surface 31b of the second cylindrical portion 34 can be located at the same position as the inner surface of the side portion 51, or further inward, along any radial direction RD. In projection toward a plane orthogonal to the axial direction AD, the inner contour of the side portion 51 can be located at the same position as the outer contour of the second cylindrical portion 34, or further outward. In projection toward a plane orthogonal to the axial direction AD, the inner contour of the side portion 51 can be located further outward than the outer contour of the second cylindrical portion 34.

[0249] like Figure 9 and Figure 10 As shown, the cover 50 separates from the outer surface 31b of the housing 30 at the second cylindrical portion 34 in a radial direction RD. That is, a gap is formed between the side portion 51 of the cover 50 and the second cylindrical portion 34 of the housing 30 in a radial direction RD. The circuit board 70A can be disposed in this gap.

[0250] In projection toward a plane orthogonal to the axial direction AD, the cover 50 may be located at the same position as the outer contour of the housing 30 or inside the outer contour of the housing 30. The outer surface of the cover 50 may be located at the same position as the outer surface 31b of the housing 30 or further inside the outer surface 31b of the housing 30 in any radial direction RD. As illustrated in the example, in projection toward a plane orthogonal to the axial direction AD, the outer contour of the cover 50 may be located along its entire circumferential direction CD at the same position as the outer contour of the housing 30.

[0251] like Figure 9 As shown, the housing 30 and the cover 50 can be connected to each other using fasteners 49 such as screws. The housing 30 and the cover 50 can also be connected to each other using adhesive. The housing 30 and the cover 50 can be connected to each other using fasteners 49 such as screws and adhesive. The fasteners 49 can also be special screws that require special tools other than ordinary Phillips screwdrivers or flathead screwdrivers during operation.

[0252] like Figure 7B and Figure 8B As shown, the lighting module 10 may include an external connector 61. The external connector 61 is a connector used to ensure electrical connection between the device 105 with the lighting module and the outside. The external connector 61 can be engaged and secured with connectors from the outside such as wiring or FPC (Flexible Printed Circuits), while also being electrically connected to the outside such wiring or FPC.

[0253] like Figure 7B and Figure 8B As shown, the external connector 61 can be located off-center from the end 52. The center of the end 52 refers to the position where the centroid of the end 52, projected onto a plane orthogonal to the axis AD, overlaps with the center of gravity of the end 52 along the axis AD. With this structure, the configuration of external wiring or external FPCs connected to the external connector 61 is stable. It is possible to prevent the configuration of external wiring or external FPCs from becoming unstable.

[0254] like Figure 9 and Figure 10 As shown, circuit board 70A is located between housing 30 and cover 50. Circuit board 70A is covered by cover 50 from the outer side in the radial direction RD. Circuit board 70A is covered by cover 50 from the second side in the axial direction AD. Circuit board 70A is electrically connected to light source 20. Circuit board 70A is electrically connected to external connector 61.

[0255] The circuit board 70A can be a flexible substrate. As shown in the figure, the circuit board 70A can also be a rigid substrate. Figure 13As shown, the circuit board 70A may include a substrate 71, components 72, and wiring 73. The materials of the substrate 71 and wiring 73 are not particularly limited. Commonly used materials can be used for the substrate 71 and wiring 73. The substrate 71 may be a board made by impregnating a paper substrate with resin, or it may be a board containing woven glass fiber and resin. The material of the wiring 73 may be copper, silver, aluminum, or alloys thereof. Component 72 is a component intended to have various functions. Examples of components 72 include capacitors, resistors, diodes, transistors, etc.

[0256] The circuit board 70A may include circuitry for receiving input signals from the control unit 114 or the control device 117, and circuitry for processing the received input signals. The circuit board 70A may also include circuitry for receiving power from the power supply unit 113 or the power supply device 118, and circuitry for performing voltage transformation or other processing on the received power.

[0257] The circuit board 70A can function as a safety device. If an input signal exceeding the permissible range is sent from the control unit 114 or control device 117, the circuit board 70A can cut off the power supply to the lighting module 10. The circuit board 70A is located between the control unit 114 and control device 117 and the lighting module 10. The circuit board 70A can control the illumination of the light source 20 from a position closer to the light source 20 than the control unit 114 and control device 117. By positioning the circuit board 70A near the light source 20, the voltage drop during power supply can be reduced. By reducing the voltage drop, the light source can be enlarged for the light emitted from the light source 20. Therefore, the power consumption of the lighting module 10 can be reduced.

[0258] like Figure 13 As shown, the circuit board 70A may include a driver IC 75 for driving the light source 20. When the light source 20 includes a laser diode, the driver IC 75 drives the laser diode. A large current flows through the circuit board 70A driving the laser diode or the driver IC 75. Power consumption is proportional to the square of the current value. Therefore, the power consumption of the circuit board 70A driving the laser diode increases. Consequently, the heat generated by the circuit board 70A driving the laser diode also increases.

[0259] like Figure 13As shown, the driver IC 75 may include multiple channels 75a connected in parallel. Channels 75a are paths through which current flows. Each of the multiple channels 75a may contain a component 72. According to this example, current is distributed through multiple channels 75a, reducing the overall heat generation of the driver IC 75. Therefore, it is possible to suppress operational instability caused by temperature rise in the circuit board 70A. This improves the reliability of control based on the circuit board 70A. Furthermore, the current value flowing from the circuit board 70A to the light source 20 can be finely adjusted.

[0260] In the first aspect of this embodiment, such as Figure 9 As shown, the circuit board 70A is at least partially located between the emission end 25a of the optical system 25 along the axial direction AD and the light source 20. According to the configuration of this circuit board 70A, the length of the illumination module 10 along the axial direction AD can be shortened. Therefore, the illumination module 10 can be miniaturized.

[0261] like Figure 9 As shown, when the optical system 25 transforms the light from the light source 20 from a divergent beam into a parallel beam, the circuit board 70A may not be required in the axial direction AD after the light from the light source 20 becomes a parallel beam.

[0262] Optical system 25 may include optical elements that shape a diverging beam into a parallel beam. Figure 9 In the example shown, the diverging beam is collimated by the first lens 28A. Along the axial direction AD, the circuit board 70A can be positioned between the optical element 28A that shapes the diverging beam into a parallel beam and the light source 20. Figure 9 In the example shown, along the axial direction AD, the circuit board 70A is not located between the optical element 28A that shapes the diverging beam into a parallel beam and the exiting end 25a. Alternatively, along the axial direction AD, the circuit board 70A may be located only on the side closer to the light source 20 than the optical element 28A that shapes the diverging beam into a parallel beam. Or, along the axial direction AD, the circuit board 70A may be located only on the side closer to the light source 20 than the optical element 28A that shapes the diverging beam into a parallel beam.

[0263] By positioning the circuit board 70A upstream of the optical path, beyond the optical element that shapes the diverging beam into a parallel beam, the circuit board 70A is located near the light source 20. Positioning the circuit board 70A near the light source 20 reduces the voltage drop during power supply. This reduced voltage drop allows for a larger light source compared to the light emitted from the light source 20. Therefore, the power consumption of the illumination module 10 can be reduced.

[0264] Furthermore, the illumination module 10 and housing 30 become larger in size radially (RD) at a position downstream of the optical element that shapes the diverging beam into a parallel beam. Conversely, the illumination module 10 and housing 30 can be miniaturized radially (RD) at a position upstream of the optical element that shapes the diverging beam into a parallel beam. By positioning the circuit board 70A upstream of the optical element that shapes the diverging beam into a parallel beam, the illumination module 10 including the circuit board 70A can be miniaturized.

[0265] The optical system 25 may include optical elements shaped to produce a diverging beam. Figure 9 In the example shown, the third lens 28C diverges the incident light. Along the axial direction AD, the circuit board 70A can be positioned between the optical element 28C that diverges the incident light and the light source 20. Figure 9 In the example shown, along the axial direction AD, the circuit board 70A is not located between the optical element 28C that diverges the incident light and the emitting end 25a. Along the axial direction AD, the circuit board 70A may be located only on the side closer to the light source 20 than the optical element 28C that diverges the incident light. Along the axial direction AD, the circuit board 70A may be located only on the side closer to the light source 20 than the optical element 28C that diverges the incident light.

[0266] By positioning the circuit board 70A upstream of the optical path than the optical element 28C that diverges the incident light, the circuit board 70A is located near the light source 20. Positioning the circuit board 70A near the light source 20 reduces the voltage drop during power supply. This reduced voltage drop allows for a larger light source output. Therefore, the power consumption of the illumination module 10 can be reduced.

[0267] Furthermore, by positioning the illumination module 10 and housing 30 further upstream along the optical path than the optical element 28C that diverges the incident light, the size of both can be further miniaturized in the radial direction (RD). By positioning the circuit board 70A further upstream along the optical path than the optical element that shapes the diverging beam into a parallel beam, the illumination module 10 containing the circuit board 70A can be miniaturized more effectively.

[0268] like Figure 9 and Figure 10As shown, the circuit board 70A can face the second cylindrical portion 34 in the radial direction RD. The circuit board 70A can be located in the region where the second cylindrical portion 34 is located in the axial direction AD. In the illustrated example, the cylindrical portion 31 of the housing 30 includes a first cylindrical portion 33 and a second cylindrical portion 34. The first cylindrical portion 33 is located closer to the first side in the axial direction AD than the second cylindrical portion 34. The second cylindrical portion 34 is thinner than the first cylindrical portion 33. Therefore, according to this configuration of the circuit board 70A, the size of the lighting module 10 in the axial direction AD can be shortened without increasing the maximum size of the lighting module 10 in the radial direction RD. That is, the lighting module 10 can be effectively miniaturized.

[0269] like Figure 10 As shown, the substrate 71 of the circuit board 70A can be oriented radially RD orthogonal to the axial direction AD. The radial direction RD orthogonal to the axial direction AD refers to the angle θa formed by the direction orthogonal to the substrate 71 (the normal direction of the substrate 71) and the axial direction AD (refer to...). Figure 9 The angle θa is between 80° and 90°. That is, the surface of the substrate 71 faces the radial direction RD. This angle θa can be between 85° and 90°, or it can be 90°. According to this example, the size of the lighting module 10 in the axial direction AD can be shortened without increasing the maximum size of the lighting module 10 in the radial direction RD. That is, the lighting module 10 can be effectively miniaturized.

[0270] The angle between the direction orthogonal to the substrate 71 (the normal direction of the substrate 71) and the axial direction AD is the smaller of the two angles between the normal direction of the substrate and the axial direction AD. This angle is a value between 0° and 90°.

[0271] like Figure 9 As shown, when viewing the illumination module 10 from a first side along the axial direction AD, for example, when viewing the illumination module 10 from the emitted light side, the circuit board 70A can be configured to overlap with the optical system 25. The circuit board 70A may partially overlap with the optical system 25. Alternatively, the entire circuit board 70A may overlap with the optical system 25. In other words, in a projection toward a plane orthogonal to the axial direction AD, the circuit board 70A may be entirely or partially located inside the outer contour of the optical system 25.

[0272] By configuring the circuit board 70A relative to the optical system 25 in this way, the maximum size of the illumination module 10 in the radial direction RD can be reduced. Furthermore, the circuit board 70A can be positioned near the light source 20. Positioning the circuit board 70A near the light source 20 reduces the voltage drop during power supply. By reducing the voltage drop, the light source size can be increased for the light emitted from the light source 20. Therefore, the power consumption of the illumination module 10 can be reduced.

[0273] like Figure 11 As shown, the lighting module 10 may include a connection component 90 connecting the light source 20 and the circuit board 70A. The connection component 90 may be a lead wire. The connection component 90 may also be an FPC (Flexible Printed Circuit) 91. The FPC 91 is a flexible substrate. The FPC 91 comprises a resin substrate such as a polyimide film or a polyethylene terephthalate film. The FPC 91 has flexibility. Therefore, the configuration freedom of the circuit board 70A can be improved.

[0274] exist Figure 11 In the example shown, FPC91 has a hole 91a. Hole 91a extends through FPC91. Terminal 22 of the light source 20 passes through hole 91a and extends through FPC91. Terminal 22 is electrically connected to FPC91 via solder 79. With this structure, a stable electrical connection between the light source 20 and FPC91 can be ensured in the narrow space between housing 30 and cover 50. Even when a large current flows from the first circuit board 70A to the light source 20, resonance of FPC91 can be suppressed.

[0275] The FPC91 can be configured in the space between the housing 30 and the cover 50. Depending on the configuration of the FPC91, the lighting module 10 can be miniaturized.

[0276] like Figure 11 As shown, the circuit board 70A may include a connector 77. The first circuit board 70A is physically connected to the FPC 91 at the connector 77, and is also electrically connected to the FPC 91.

[0277] like Figure 11 As shown, the FPC91 can be mounted on the housing 30 at a position between the light source 20 and the circuit board 70A. According to this example, movement of the FPC91 can be restricted. Therefore, a stable electrical connection between the light source 20 using the FPC91 and the circuit board 70A can be ensured. Resonance can be suppressed even when a large current flows from the first circuit board 70A to the light source 20.

[0278] exist Figure 11 In the example shown, fastener 95 is used to secure FPC91 to housing 30. Figure 11As shown, FPC91 can be fixed to the bottom 38 of housing 30. FPC91 can be fixed to the cylindrical portion 31 of housing 30. FPC91 can be fixed to the second cylindrical portion 34 of the cylindrical portion 31 of housing 30.

[0279] and Figures 9 to 11 The examples shown are different, such as Figure 14 and Figure 15 As shown, the circuit board 70A can be annular, with the second cylindrical portion 34 of the housing 30 penetrating through it. In this example, the circuit board 70A is also at least partially located between the emitting end 25a of the optical system 25 along the axial direction AD and the light source 20. Therefore, the length of the illumination module 10 along the axial direction AD can be shortened. As a result, the illumination module 10 can be miniaturized.

[0280] exist Figure 14 and Figure 15 In the example shown, the substrate 71 can also face the axial direction AD. The substrate 71 facing the axial direction AD means that the angle between the direction orthogonal to the substrate 71 (the normal direction of the substrate 71) and the axial direction AD is 0° to 10°. That is, the surface of the substrate 71 faces the axial direction AD. This angle can be 0° to 5°, or it can be 0°. According to this example, the size of the lighting module 10 in the axial direction AD can be shortened without increasing the maximum size of the lighting module 10 in the radial direction RD. That is, the lighting module 10 can be effectively miniaturized.

[0281] In addition to the circuit board 70A, which serves as the first circuit board 70A, the lighting module 10 may further include a second circuit board 70B. By providing the second circuit board 70B, it is possible to prevent any single circuit board from becoming too large. This allows each circuit board 70A and 70B to be disposed within the space between the housing 30 and the cover 50. This effectively miniaturizes the lighting module 10. Furthermore, the circuit boards 70A and 70B, which act as heat sources, can be dispersed within the space between the housing 30 and the cover 50. This prevents the lighting module 10 from overheating during use and causing operational instability. Moreover, multiple circuits can be mounted in the lighting module 10.

[0282] exist Figures 9 to 11 In the example shown, the second circuit board 70B is configured similarly to the first circuit board 70A. That is, the second circuit board 70B is at least partially located between the emission end 25a of the optical system 25 and the light source 20 along the axial direction AD. The second circuit board 70B may face the second cylindrical portion 34 in the radial direction RD. The substrate 71 of the second circuit board 70B may face the radial direction RD, which is orthogonal to the axial direction AD. With this configuration of the second circuit board 70B, the illumination module 10 can be miniaturized.

[0283] exist Figure 14In the lighting module 10 shown, as Figure 14 As shown by the double-dotted line, the second circuit board 70B is also at least partially located between the emission end 25a of the optical system 25 and the light source 20 along the axial direction AD. The second circuit board 70B may be annular, with the second cylindrical portion 34 of the housing 30 penetrating through it. The substrate 71 of the second circuit board 70B may face the axial direction AD. According to the configuration of this second circuit board 70B, the lighting module 10 can be miniaturized.

[0284] like Figure 10 As shown, the first circuit board 70A and the second circuit board 70B can be electrically connected using a board connection component 92. The board connection component 92 can be an FPC (Flexible Printed Circuit) 93. The FPC 93 is a flexible substrate. The FPC 93 comprises a resin substrate such as a polyimide film or a polyethylene terephthalate film. The FPC 93 is flexible. Therefore, the flexibility in configuring multiple circuit boards 70A and 70B can be increased.

[0285] The FPC93 can be configured in the space between the housing 30 and the cover 50. This configuration of the FPC93 enables the miniaturization of the lighting module 10.

[0286] Circuit boards 70A and 70B can contact the housing 30. During the projection of the projection pattern 101 onto the projection surface 100 by the lighting module 10, circuit boards 70A and 70B may become heat sources. By making circuit boards 70A and 70B contact the housing 30, heat can be dissipated from the circuit boards 70A and 70B to the housing 30 through thermal conduction. That is, the housing 30 ensures a heat dissipation path for the heat generated by the circuit boards 70A and 70B. Therefore, overheating of the circuit boards 70A and 70B can be suppressed, improving the operational reliability of the lighting module 10.

[0287] like Figure 11 As shown, the housing 30 may include an outwardly projecting portion 39 protruding radially outward. Through the outwardly projecting portion 39, the circuit boards 70A and 70B can contact the surface of the housing 30. Figure 14 and Figure 15 In the example shown, circuit boards 70A and 70B can contact the housing 30 on their inner surfaces.

[0288] Circuit boards 70A and 70B can be fixed to the housing 30 or the cover 50 using circuit board mounting members (not shown). The circuit board mounting members can be fixed in a way that prevents them from overlapping with the components 72 on the circuit boards. The circuit board mounting members can be configured not to contact the components 72. The circuit board mounting members can be made of a material with a higher thermal conductivity than the substrate 71 of the circuit boards 70A and 70B. By using circuit board mounting members made of a material with high thermal conductivity, a heat dissipation path for the heat generated by the circuit boards 70A and 70B can be ensured through the housing 30. The circuit board mounting members can reduce the thermal resistance between the components 72 and the housing 30 and / or the thermal resistance between the components 72 and the cover 50.

[0289] Furthermore, although not shown, the heat dissipation component can also be configured to contact the component 72 of the circuit boards 70A and 70B. The heat dissipation component can be made of a material with a higher thermal conductivity than the substrate 71 of the circuit boards 70A and 70B. The heat dissipation component can be directly or indirectly connected to the circuit board mounting members to facilitate heat conduction. The heat dissipation component ensures a proper heat conduction path, thereby reducing the thermal resistance between the component 72 and the housing 30 and / or between the component 72 and the cover 50.

[0290] Circuit boards 70A and 70B can contact the cover 50. By making the circuit boards 70A and 70B contact the cover 50, heat can be dissipated from the circuit boards 70A and 70B to the cover 50 through heat conduction. That is, the cover 50 can ensure a heat dissipation path for the heat generated by the circuit boards 70A and 70B. Therefore, overheating of the circuit boards 70A and 70B can be suppressed, and the operational reliability of the lighting module 10 can be improved.

[0291] like Figure 11 As shown, the cover 50 may include an inward protrusion 54 projecting radially inward. Circuit boards 70A and 70B can contact the surface of the cover 50 through the inward protrusion 54. Figure 14 and Figure 15 In the example shown, circuit boards 70A and 70B can contact the cover 50 at their outer periphery.

[0292] Circuit boards 70A and 70B can contact both the housing 30 and the cover 50. This effectively dissipates the heat generated by the circuit boards 70A and 70B from the lighting module.

[0293] The above describes the heat dissipation method generated from circuit boards 70A and 70B, but the same effect can be obtained even when there is only one circuit board.

[0294] For reference Figures 6A to 6D As described above, the lighting module 10 having the above structure is assembled into or installed in the device 105 with the lighting module.

[0295] At least one of the housing 30 and the cover 50 can be fixed to the device 110. By fixing at least one of the housing 30 and the cover 50 to the device 110, the lighting module 10 is held in a fixed relative position with respect to the device 110. As a result, the projection pattern 101 can be projected accurately onto the appropriate position of the projection surface 100. Furthermore, according to this structure, the heat generated by the circuit boards 70A and 70B can be efficiently conducted to the device 110.

[0296] exist Figure 11 In the example shown, the cover 50 includes a contact portion 50c that contacts the device 110. The contact portion 50c may be located between the circuit boards 70A, 70B and the device 110. According to this example, heat generated by the circuit boards 70A, 70B can be conducted to the device 110 via the contact portion 50c of the cover 50. Therefore, heat generated by the circuit boards 70A, 70B can be efficiently conducted to the device 110.

[0297] The cover 50 can have a circular outline in its projection toward a plane orthogonal to the axis AD. According to this example, the cover 50 can be fixed to the device 110 by properly adjusting the rotational position of the lighting module 10 centered on the axis AD. Therefore, the projection pattern 101 can be projected accurately onto the appropriate position of the projection surface 100.

[0298] The housing 30 can have a circular outline in its projection toward a plane orthogonal to the axis AD. According to this example, the housing 30 can be fixed to the device 110 by appropriately adjusting the rotational position of the lighting module 10 centered on the axis AD. Therefore, the projection pattern 101 can be projected accurately onto the appropriate position on the projection surface 100.

[0299] exist Figure 7A and Figure 7B In the example shown, the cover 50 includes a plurality of receiving holes 55. The receiving holes 55 accommodate fasteners 98 such as screws for mounting the lighting module 10 to the device 110 (see reference). Figure 11 By selecting the appropriate receiving hole 55 from among the multiple receiving holes 55, the rotational position of the lighting module 10 centered on the axial direction AD can be properly adjusted.

[0300] exist Figure 7A and Figure 7B In the example shown, multiple receiving holes 55 are equally spaced along the circumferential direction CD. The receiving holes 55 can be provided on the housing 30. The receiving holes 55 can be provided on both the housing 30 and the cover 50.

[0301] like Figure 7A and Figure 7BAs shown, at least one of the housing 30 and the cover 50 may include a mark 64 indicating the orientation to be set. The mark 64 may be an indicator of the rotational position of the illumination module 10 centered on the axis AD. The mark 64 may indicate the orientation of the patterned optical system 26. By using the mark 64, the rotational position of the illumination module 10 centered on the axis AD can be properly adjusted.

[0302] exist Figure 7A and Figure 7B In the example shown, mark 64 is provided on cover 50. Mark 64 can also be provided on housing 30. Mark 64 can also be provided on both housing 30 and cover 50.

[0303] In the first embodiment described above, the illumination module 10 projects a projection pattern 101 onto the projection surface 100. The illumination module 10 includes a light source 20, an optical system 25 facing the light source 20 along the axial direction AD, a housing 30 that holds the light source 20 and houses the optical system 25, and a circuit board 70A. The circuit board 70A is at least partially located between the emitting end 25a of the optical system 25 along the axial direction AD and the light source 20.

[0304] According to this first approach, the circuit board 70A is at least partially located between the emitting end 25a of the optical system 25 and the light source 20 along the axial direction AD. Therefore, it is possible to effectively suppress the enlargement of the illumination module 10 along the axial direction AD.

[0305] In a specific example of the first aspect of this embodiment, the lighting device may include a cover 50 that partially covers the housing 30. A first circuit board 70A may be located between the housing 30 and the cover 50.

[0306] According to this specific example, the first circuit board 70A is disposed in the space between the housing 30 and the cover 50. This allows for miniaturization of the lighting module 10 while physically protecting the first circuit board 70A between the housing 30 and the cover 50. Furthermore, the cover 50 shields the lighting module 10 from electromagnetic noise emitted by devices such as the device 112, power supply unit 113, and control unit 114 that may be located near the lighting module 10. Therefore, malfunctions of the lighting module 10 caused by electromagnetic noise can be suppressed. Moreover, the first circuit board 70A is disposed in the space between the housing 30 and the cover 50. Therefore, the housing 30 or the cover 50 ensures a heat dissipation path for heat generated from the circuit board 70A. This suppresses malfunctions of the lighting module 10 caused by overheating.

[0307] In a specific example of the first aspect of this embodiment, the housing 30 includes a cylindrical portion 31 and a bottom 38 connected to the cylindrical portion 31. The cylindrical portion 31 is open on a first side in the axial direction AD and is at least partially closed from a second side by the bottom 38. The optical system 25 is held inside the cylindrical portion 31. The light source 20 is held at the bottom 38. According to this example, the housing 30 can effectively shield the light path from the light source 20 to the emission end 25a. Therefore, it is possible to suppress the inflow of foreign matter such as dust into the housing 30. It is possible to prevent the desired optical function of the optical system 25 within the housing 30 from being damaged by foreign matter. As a result, the projection pattern 101 can be projected onto the projection surface 100 with good accuracy.

[0308] The cover 50 includes: a plate-shaped end portion 52 facing the housing 30 in the axial direction AD; and a cylindrical side portion 51 facing the housing 30 in the radial direction RD perpendicular to the axial direction AD. With such a cover 50, the circuit board 70A can be physically protected more reliably, and the first circuit board 70A can be protected more reliably from electromagnetic noise.

[0309] The cover 50 is located at the same position as the housing 30 or inside the housing 30 in its projection toward a plane orthogonal to the axial direction AD. With such a cover 50, the size of the lighting module 10 in the radial direction RD can be reduced more effectively.

[0310] Reference Figures 9 to 15 A first embodiment of this invention has been described. In this first embodiment, the circuit board 70A is at least partially located between the emission end 25a of the optical system 25 along the axial direction AD and the light source 20. However, this embodiment is not limited to this example. See also... Figures 16 to 18 The second aspect of this embodiment will be described.

[0311] In the second method, such as Figures 16 to 18 As shown, the circuit board 70A may include a socket 76 that is electrically connected to the terminals of the light source. The light source 20 may be located between the socket 76 and the optical system 25 along the axial direction AD. The light source 20 may be located between the circuit board 70A and the optical system 25 along the axial direction AD. According to the configuration of the circuit board 70A in the second embodiment, the lighting module 10 can also be miniaturized.

[0312] The second method differs from the first method in the arrangement of the circuit board 70A. Except for the arrangement of the circuit board 70A, the second method can be configured identically to the first method.

[0313] For example, the lighting device may include a cover 50 that partially covers the housing 30. At least a portion of the circuit board 70A may be located between the housing 30 and the cover 50 in the axial direction AD.

[0314] The circuit board 70A faces the light source 20 along the axial direction AD. The light source 20 can be located inside the outer contour of the circuit board 70A in its projection toward the plane orthogonal to the axial direction AD.

[0315] exist Figure 16 and Figure 18 In the example shown, substrate 71 can be oriented towards the axial direction AD. "Substrate 71 oriented towards the axial direction AD" means that the angle between the direction orthogonal to substrate 71 (the normal direction of substrate 71) and the axial direction AD is 0° to 10°. That is, the surface of substrate 71 faces the axial direction AD. This angle can be 0° to 5°, or it can be 0°. According to this example, the size of the lighting module 10 in the axial direction AD can be reduced without increasing the maximum size of the lighting module 10 in the radial direction RD. That is, the lighting module 10 can be effectively miniaturized.

[0316] In the second embodiment, the lighting module 10 may include a detachment suppression mechanism 65. The detachment suppression mechanism 65 prevents the socket 76 from detaching from the terminal 22 of the light source 20. According to the detachment suppression mechanism 65, the electrical connection between the light source 20 and the circuit boards 70A and 70B can be stably maintained.

[0317] The detachment suppression mechanism 65 can be composed of a cover 50 that contacts the circuit board 70A from a second side along the axial direction AD. That is, the cover 50 can restrict the relative movement of the circuit board 70A from the first side to the second side along the axial direction AD relative to the light source 20.

[0318] like Figure 18 As shown, the cover 50 may include an inward protrusion 56 projecting radially inward. The circuit board 70A can contact the surface of the cover 50 via the inward protrusion 56. The inward protrusion 56 functions as a detachment suppression mechanism 65. By contacting the circuit board 70A, the inward protrusion 56 can form a heat dissipation path for the heat generated by the circuit board 70A.

[0319] like Figure 18 As shown, the detachment suppression mechanism 65 may include a plate 66 that contacts the circuit board 70A from a second side along the axial direction AD. That is, the plate 66 can restrict the relative movement of the circuit board 70A from the first side to the second side along the axial direction AD relative to the light source 20. The plate 66 can be fixed to the housing 30 using a fastener 67. The plate 66 can also be fixed to the bottom 38 of the housing 30 using a fastener 67. Unlike the illustrated example, the plate 66 can also be fixed to the cover 50. The plate 66 functions as the detachment suppression mechanism 65. By contacting the circuit board 70A, the plate 66 can form a heat dissipation path for the heat generated by the circuit board 70A.

[0320] like Figure 15As shown, the outer width of the circuit board 70A along the radial direction RD can be smaller than the outer width of the housing 30 along the radial direction RD. The outer edge of the circuit board 70A can be located at the same position as the outer surface of the housing 30, or further inward than the outer surface of the housing 30, in any radial direction RD. In a projection toward a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located at the same position as the outer contour of the housing 30, or further inward than the outer contour of the housing 30. In a projection toward a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located further inward than the outer contour of the housing 30.

[0321] The circuit board 70A can be configured to suppress the increase in size of the lighting module 10 in the radial direction RD. As a result, the lighting module 10 can be effectively miniaturized.

[0322] The outer width of the circuit board 70A along the radial direction RD can be smaller than the outer width of the first cylindrical portion 33 of the housing 30 along the radial direction RD. The outer edge of the circuit board 70A can be located at the same position as the outer edge of the first cylindrical portion 33, or further inward, along any radial direction RD. In a projection toward a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located at the same position as the outer contour of the first cylindrical portion 33, or further inward, along with the first cylindrical portion 33. In a projection toward a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located further inward than the outer contour of the first cylindrical portion 33.

[0323] exist Figure 16 In the example shown, the inner surface of the side portion 51 of the cover 50 contacts the outer surface of the cylindrical portion 31. Therefore, the circuit board 70A can be disposed in the space inside the cover 50 without increasing the size of the lighting module 10 in the radial direction RD. As a result, the lighting module 10 can be effectively miniaturized.

[0324] The outer width of the circuit board 70A along the radial direction RD can be smaller than the outer width of the second cylindrical portion 34 of the housing 30 along the radial direction RD. The outer edge of the circuit board 70A can be located at the same position as the outer edge of the second cylindrical portion 34, or further inward, along any radial direction RD. In a projection toward a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located at the same position as the outer contour of the second cylindrical portion 34, or further inward, along with the second cylindrical portion 34. In a projection toward a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located further inward than the outer contour of the second cylindrical portion 34.

[0325] The outer width of the circuit board 70A along the radial direction RD can be smaller than the outer width of the bottom 38 of the housing 30 along the radial direction RD. The outer edge of the circuit board 70A can be located at the same position as the outer edge of the bottom 38, or further inward, along any radial direction RD. In a projection onto a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located at the same position as the outer contour of the bottom 38, or further inward, along with the outer contour of the bottom 38. In a projection onto a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located further inward than the outer contour of the bottom 38.

[0326] The outer width of the circuit board 70A along the radial direction RD can be smaller than the inner width of the side portion 51 of the cover 50 along the radial direction RD. The outer edge of the circuit board 70A can be located at the same position as the inner edge of the side portion 51, or further inward, along any radial direction RD. In a projection toward a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located at the same position as the inner contour of the side portion 51, or further inward, along with the inner contour of the side portion 51. In a projection toward a plane orthogonal to the axial direction AD, the outer contour of the circuit board 70A can be located further inward than the inner contour of the side portion 51.

[0327] In the second embodiment, in addition to the circuit board 70A, which serves as the first circuit board 70A, the lighting module 10 may also include a second circuit board 70B separate from the circuit board 70A. By providing the second circuit board 70B, the possibility of a single circuit board becoming excessively large can be prevented. Thus, each circuit board 70A and 70B can be disposed in the space between the housing 30 and the cover 50. This effectively miniaturizes the lighting module 10. Furthermore, the circuit boards 70A and 70B, which act as heat sources, can be dispersed within the space between the housing 30 and the cover 50. This prevents the lighting module 10 from overheating during use and causing operational instability. Furthermore, multiple circuits can be mounted in the lighting module 10.

[0328] The second circuit board 70B can be constructed in the same way as the first circuit board 70A or the second circuit board 70B described in the first embodiment. For example, as Figure 16 As shown, the second circuit board 70B can be located at least partially between the emission end 25a of the optical system 25 and the light source 20 along the axial direction AD. According to the configuration of this second circuit board 70B, the illumination module 10 can be miniaturized along both the axial direction AD and the radial direction RD.

[0329] The second circuit board 70B can face the first cylindrical portion 33 in the radial direction RD. The substrate 71 of the second circuit board 70B can be oriented in the radial direction RD, which is orthogonal to the axial direction AD. According to the configuration of the second circuit board 70B, the lighting module 10 can be miniaturized.

[0330] The circuit board 70A and the second circuit board 70B can be electrically connected via a board connection component 92, such as an FPC 93. By using an FPC 93, the lighting module 10 can be miniaturized.

[0331] In the second embodiment described above, the illumination module 10 projects a projection pattern 101 onto the projection surface 100. The illumination module 10 includes a light source 20, an optical system 25 facing the light source 20 along the axial direction AD, a housing 30 holding the light source 20 and housing the optical system 25, a cover 50 partially covering the housing 30, and a circuit board 70A located between the housing 30 and the cover 50. The circuit board 70A includes a socket 76 that is electrically connected to and contacts the terminals 22 of the light source 20. The light source 20 is located along the axial direction AD between the socket 76 and the optical system 25. At least a portion of the circuit board 70A is located along the axial direction AD between the housing 30 and the cover 50.

[0332] According to this second method, the housing 30 can be directly connected to the first circuit board 70A using the socket 76. Therefore, the enlargement of the lighting module 10 in both the axial (AD) and radial (RD) directions can be effectively suppressed. The first circuit board 70A is disposed in the space between the housing 30 and the cover 50. Thus, while miniaturizing the lighting module 10, the first circuit board 70A can be physically protected between the housing 30 and the cover 50.

[0333] Furthermore, according to the second method, the cover 50 can shield the lighting module 10 from electromagnetic noise emitted by devices such as the device 112, power supply unit 113, and control unit 114 that may be located near the lighting module 10. Therefore, malfunctions of the lighting module 10 caused by electromagnetic noise can be suppressed.

[0334] Furthermore, according to the second method, the first circuit board 70A is disposed in the space between the housing 30 and the cover 50. Therefore, the housing 30 or the cover 50 can be used to ensure a heat dissipation path for the heat generated from the circuit board 70A. As a result, malfunction of the lighting module 10 caused by overheating can be suppressed.

[0335] Although this embodiment has been described with reference to several specific examples, these specific examples do not limit this embodiment. This embodiment can be implemented with various other specific examples, and various omissions, substitutions, changes, additions, etc., can be made without departing from its spirit.

[0336] Hereinafter, a modified example will be described with reference to the accompanying drawings. In the following description and the accompanying drawings used in the description, parts that can be constructed in the same way as the specific examples described above will use the same symbols as the corresponding parts in the specific examples described above, and repeated descriptions will be omitted.

[0337] The specific example above illustrates pattern projection onto projection surface 100 using a single illumination module 10. However, it is not limited to this example.

[0338] like Figure 19 and Figure 20 As shown, the lighting system 5 may include a lighting module unit 8. The lighting module unit 8 includes a plurality of lighting modules 10. Each lighting module 10 included in the lighting system 5 projects a projection pattern 101 onto a projection surface 100. The plurality of projection patterns 101 projected onto the projection surface 100 form a lighting pattern 102 as a composite pattern. That is, the lighting pattern 102 is displayed on the projection surface 100 by projecting the plurality of projection patterns 101 onto the projection surface 100.

[0339] like Figure 19 and Figure 20 As shown, the lighting method may include a lighting step of illuminating the projection surface 100 using the lighting module unit 8. In the lighting step, multiple projection patterns 101 are projected from the lighting module unit 8 onto the projection surface 100. The multiple projection patterns 101 projected onto the projection surface 100 form a lighting pattern 102 as a composite pattern. That is, the lighting pattern 102 is displayed on the projection surface 100 by projecting the multiple projection patterns 101 onto the projection surface 100.

[0340] according to Figure 19 and Figure 20 In the example shown, the illumination pattern 102 projected onto the projection surface 100 is composed of multiple projection patterns 101. Therefore, a large illumination pattern 102 can be displayed on the projection surface 100. By adjusting the brightness of the multiple projection patterns 101, the illumination pattern 102 can be displayed brightly. Figure 19 and Figure 20 The example shown enables the display of a lighting pattern 102 that can be observed from a distance on the projection surface 100.

[0341] exist Figure 19 and Figure 20 In the example shown, the projection surface 100 of the projected illumination pattern 102 and the projection pattern 101 is not particularly limited. The projection surface 100 of the projected illumination pattern 102 and the projection pattern 101 can be the same as in the example above. The illumination pattern 102 and the projection pattern 101 are not particularly limited. The illumination pattern 102 and the projection pattern 101 can be the same as in the example above.

[0342] Figure 19 and Figure 20 An example of the configuration of lighting system 5 is shown. Figure 20 The lighting system 5 shown is capable of projecting multiple projection patterns 101 onto the projection surface 100. Figure 20The lighting system 5 shown is capable of displaying a lighting pattern 102 on the projection surface 100.

[0343] like Figure 19 and Figure 20 As shown, the lighting system 5 includes a lighting module unit 8. The lighting module unit 8 includes multiple lighting modules 10. The lighting modules 10 project a projection pattern 101 onto the projection surface 100. The lighting modules 10 illuminate an illuminated area 103 in the projection surface 100. The illuminated area 103 is the area of ​​the projection surface 100 where the projection pattern 101 should be projected. The illuminated area 103 has the same shape as the projection pattern 101 that should be projected.

[0344] like Figure 19 As shown, multiple lighting modules 10 can be located in different positions. The multiple lighting modules 10 can be held in a fixed relative position with respect to the projection plane 100. The lighting modules 10 can be held by a holder such as a tripod (not shown).

[0345] like Figure 19 As shown, multiple projected patterns 101 can be identical to each other. Alternatively, some projected patterns 101 can be identical to each other. Alternatively, multiple projected patterns 101 can be different from each other. Alternatively, some projected patterns 101 can be different from each other.

[0346] like Figure 19 As shown, the shapes of multiple projected patterns 101 can be the same. Some projected patterns 101 can have the same shape. Multiple projected patterns 101 can have different shapes. Some projected patterns 101 can have different shapes.

[0347] The brightness of multiple projected patterns 101 can be the same. The brightness of some projected patterns 101 can be the same. The brightness of multiple projected patterns 101 can be different from each other. The brightness of some projected patterns 101 can be different from each other.

[0348] like Figure 19 As shown, the projection positions of multiple projection patterns 101 on the projection surface 100 can be the same. Some projection patterns 101 can be the same. Multiple projection patterns 101 can be different. Some projection patterns 101 can be different.

[0349] like Figure 19 and Figure 20 As shown, in addition to the lighting module unit 8, the lighting system 5 may also include a power supply 96 and an indicator 97.

[0350] Power supply 96 supplies power to lighting module unit 8. For example... Figure 19and Figure 20 As shown, the power supply 96 may include one or more of the power supply unit 113 and the power supply device 118 described above. A separate power supply 96 can be provided for each lighting module 10. The power supply 96 can be electrically connected to multiple lighting modules via wired or wireless means. The power supply 96 can be a battery. The power supply 96, acting as a battery, can be positioned near the lighting module 10. By positioning the power supply 96 near the lighting module 10, power loss can be reduced.

[0351] The power supply 96 can be electrically connected to the circuit board 70A of the lighting module 10 via wired or wireless means. The circuit board 70A of each lighting module 10 can adjust the power supply from the power supply 96 to that lighting module 10 independently of the power supply from the power supply 96 to other lighting modules 10. That is, each circuit board 70A can adjust the power supply from the power supply 96 to that lighting module 10 without being affected by the state of the power supply from the power supply 96 to other lighting modules 10.

[0352] Each lighting module 10's circuit board 70A can switch the presence or absence of power supply from the power source 96 to that lighting module 10. Each lighting module 10's circuit board 70A can switch the presence or absence of power supply from the power source 96 independently of the circuit boards 70A of other lighting modules 10. Each lighting module 10's circuit board 70A can switch the presence or absence of power supply from the power source 96 to that lighting module 10 without being affected by the circuit boards 70A of other lighting modules 10.

[0353] The circuit board 70A can regulate the power supply from the power source 96 to the lighting module 10. Each lighting module 10's circuit board 70A can regulate the power supply from the power source 96 to that lighting module 10 independently of the circuit boards 70A of other lighting modules 10. Each lighting module 10's circuit board 70A can regulate the power supply from the power source 96 to that lighting module 10 without being affected by the circuit boards 70A of other lighting modules 10. The regulation of the power supply implemented by the circuit board 70A can be voltage and / or current regulation. The regulation of the power supply implemented by the circuit board 70A can be the regulation of the power supply per unit time. The regulation of the power supply implemented by the circuit board 70A can be the regulation of the duration of power supply per unit time.

[0354] like Figure 19 and Figure 20 As shown, the lighting system 5 may include an indicator 97. The indicator 97 sends indicator signals to the circuit board 70A of the plurality of lighting modules 10. Figure 19 and Figure 20As shown, indicator 97 may include one or more of the power supply unit 113 and power supply device 118 described above. Indicator 97 is electrically connected to circuit board 70A via wired or wireless means. Indicator 97 sends indication signals to circuit board 70A based on externally input conditions or pre-recorded conditions. Circuit board 70A may include circuitry for receiving indication signals from indicator 97 or circuitry for processing the received indication signals. Circuit board 70A may adjust the power supply to light source 20 and control the projection of projection pattern 101 based on the indication signals. Indicator 97 may include one or more of smartphones, tablets, and computers. Indicator 97 may include an interface for accepting manual operation.

[0355] Next, the method of illuminating the projection surface 100 using the lighting system 5 and lighting module unit 8 constructed from the above structure will be described.

[0356] The lighting method may include a process of preparing the lighting module unit 8 and a process of illuminating the projection surface 100 using the lighting module unit 8. In the preparation process, a lighting pattern 102 to be displayed on the projection surface 100 can be selected. The selection of the lighting pattern 102 can be input to an indicator 97. The indicator 97 can select or generate an indication signal corresponding to the lighting pattern 102 to be displayed on the projection surface 100, which is then sent to the circuit board 70A.

[0357] In the lighting process, each circuit board 70A supplies power from the power supply 96 to the corresponding lighting module 10 based on the indication signal from the indicator 97. The lighting module 10 projects a projection pattern 101 onto the projection surface 100 when powered. Multiple projection patterns 101 are projected onto the projection surface 100 from the multiple lighting modules 10 included in the lighting module unit 8. The multiple projection patterns 101 projected onto the projection surface 100 form a lighting pattern 102 as a composite pattern. That is, the lighting pattern 102 is displayed on the projection surface 100 by projecting multiple projection patterns 101 onto the projection surface 101.

[0358] In the above lighting method, the lighting pattern 102 projected onto the projection surface 100 is composed of multiple projection patterns 101. Therefore, a large lighting pattern 102 can be displayed on the projection surface 100. By adjusting the shape of the multiple projection patterns 101, a complex lighting pattern 102 can be displayed. By adjusting the brightness of the multiple projection patterns 101, the lighting pattern 102 can be displayed brightly. As a result, a lighting pattern 102 that can be observed from a distance can be displayed on the projection surface 100.

[0359] Furthermore, by adjusting the shape and / or brightness of each projection pattern 101, the design of the lighting pattern 102 can be improved. By improving the design of the lighting pattern 102, it can be made more eye-catching. As a result, the lighting pattern 102 displayed on the projection surface 100 can be easily observed from a distance.

[0360] The lighting system 5 and lighting module unit 8 may include multiple lighting modules 10. These multiple lighting modules 10 can project independent projection patterns 101 onto the projection surface 100. By projecting a portion or a single projection pattern 101 onto each lighting module 10, rather than projecting the entire lighting pattern 102, the overall power consumption of the lighting module unit 8 can be reduced. Furthermore, this structure maintains the laser safety of individual projection patterns and suppresses any reduction in the overall laser safety of the lighting pattern.

[0361] Furthermore, in the structure where each lighting module 10 projects a portion or a single projection pattern 101, rather than the entire lighting pattern 102, the power consumption of each lighting module 10 is lower. This increases the flexibility in the placement of the low-power lighting modules 10. The low-power lighting modules 10 can be installed together with the power supply 96 in locations where the size or capacity of the power supply 96 is limited. Therefore, the lighting module unit 8 and lighting system 5, which include the low-power lighting modules 10, are suitable for installation in security equipment, underground spaces, ships, railway vehicles, aircraft, railway facilities, airport facilities, etc.

[0362] Based on the structure where each lighting module 10 projects a portion or a projection pattern 101, rather than the entire lighting pattern 102, the projection and stopping of each lighting module 10 can be switched independently of other lighting modules 10. That is, the display and non-display of each projection pattern 101 can be selected independently of other projection patterns 101.

[0363] Based on the structure where each lighting module 10 projects a portion or a single projection pattern 101, rather than the entire lighting pattern 102, the power supply to each lighting module 10 can be adjusted independently of the other lighting modules 10. That is, the brightness of each projection pattern 101 can be adjusted independently of the brightness of the other projection patterns 101.

[0364] That is, by projecting a portion or a projection pattern 101 onto each lighting module 10 instead of the entire lighting pattern 102, the shape or brightness distribution of the lighting pattern 102 can be continuously or partially changed. With this structure, dynamic images can be displayed. This structure also improves the design of the lighting pattern 102. By improving the design of the lighting pattern 102, it becomes more eye-catching. In particular, compared to the case where the entire lighting pattern 102 is turned on and off and flashes, the instantaneous elimination of the time of complete extinguishing is more eye-catching, thus making it suitable for applications requiring information display, such as warnings or guidance signs in traffic areas. As a result, the lighting pattern 102 displayed on the projection surface 100 can be easily observed from a distance.

[0365] Figures 21A to 21H A specific example of the lighting method is shown. Figures 21A to 21H Specific examples of the lighting pattern 102 and multiple projection patterns 101 are shown. Figures 21A to 21H The lighting pattern 102 shown can be transmitted through Figure 20 The lighting system 5 and lighting module unit 8 shown are displayed on the projection surface 100. Figures 21A to 21H The multiple projection patterns 101 shown can be passed through Figure 20 The lighting system 5 and lighting module unit 8 shown are projected onto the projection surface 100.

[0366] exist Figure 19 , Figure 20 and Figure 21A In the example shown, the illumination pattern 102, as a composite pattern, is observed as a line on the projection surface 100. The multiple projection patterns 101 actually projected onto the projection surface 100 are also line-shaped. As a composite pattern formed by combining multiple line-shaped projection patterns 101, the illumination pattern 102 is observed as a line.

[0367] In the illustrated example, the length direction of the line formed by the lighting pattern 102 is the fifth direction D5. As described above, according to this example, a large lighting pattern 102 can be displayed. The length of the lighting pattern 102 along the length direction can be 5m or more, 20m or more, or 50m or more. The length of the lighting pattern 102 along the length direction can be less than 200m, less than 100m, or less than 50m.

[0368] In the illustrated example, the width direction of the line formed by the lighting pattern 102 is the fourth direction D4. The length (width) of the lighting pattern 102 along the width direction can be less than 50cm, less than 20cm, or less than 10cm. The length (width) of the lighting pattern 102 along the width direction can be more than 2cm, more than 10cm, or more than 20cm.

[0369] When light is to be shone onto a linear illuminated area 103, the angle of incidence α from the illumination module 10 to the projection surface 100 may become very large. The maximum value of the angle of incidence α can be less than 90°. For example... Figure 19 As shown, the incident angle α is the angle between the direction of the projected light and the normal direction ND of the projection surface 100.

[0370] Figure 21A It will be like Figure 20 A top view showing the illumination pattern 102 displayed on the projection plane 100 as shown, together with multiple projection patterns 101. Figure 21A As shown, multiple projection patterns 101 can be arranged in the fourth direction D4. The multiple projection patterns 101 can also extend in the fifth direction D5, which is not parallel to the fourth direction D4. Figure 21A In the example shown, the lighting pattern 102 is linear.

[0371] like Figure 20 As shown, the width W101 of each projection pattern 101 in the fourth direction D4 is narrower than the width W102 of the illumination pattern 102 in the fourth direction D4. According to the illustrated example, by combining multiple projection patterns 101 with a narrow width W101, an illumination pattern 102 with a large width W102 can be displayed. The inventors have confirmed that by using multiple projection patterns 101 projected in a staggered manner in the fourth direction D4 to display an illumination pattern 102 with a large width W102, it is possible to reduce overall power consumption while making the illumination pattern 102 more conspicuous and easier to observe from a distance. Furthermore, by projecting multiple projection patterns 101 in a staggered manner in the fourth direction D4, laser safety can be improved more stably. Moreover, the power consumption of each illumination module 10 can be reduced more stably. For the illumination module 10 with reduced power consumption, the degree of freedom in its configuration is increased.

[0372] exist Figure 20 and Figure 21A In the example shown, multiple projection patterns 101 extend linearly in a fifth direction D5, orthogonal to the fourth direction D4. Each projection pattern 101 is linear. In this example, the illumination pattern 102 extends linearly in the fifth direction D5, orthogonal to the fourth direction D4. Figure 19 Similarly, the lighting pattern 102 shown is also linear.

[0373] like Figure 20As shown, the width W101 of each linear projection pattern 101 is narrower than the width W102 of the illumination pattern 102 observed as a line. According to the illustrated example, by combining multiple projection patterns 101 with a narrow width W101, an illumination pattern 102 with a large width W102 can be displayed. The inventors have confirmed that by using multiple projection patterns 101 projected staggeredly in the fourth direction D4 to display an illumination pattern 102 with a large width W102, it is possible to reduce overall power consumption while making the linear illumination pattern 102 more noticeable and easier to observe from a distance. Furthermore, by projecting multiple projection patterns 101 staggeredly in the fourth direction D4, laser safety can be improved more consistently. Moreover, the power consumption of each illumination module 10 can be reduced more consistently. For the illumination module 10 with reduced power consumption, the degree of freedom in its configuration is increased.

[0374] like Figure 20 and Figure 21A As shown, on the projection surface 100, multiple projection patterns 101 are separated from each other in the fourth direction D4. That is, there is a non-illuminated area between two adjacent projection patterns 101 in the fourth direction D4 that is not illuminated by the projection light. If the width of the non-illuminated area 102X along the fourth direction D4 is short, the non-illuminated area 102X can be made less noticeable when viewed from a distance. That is, when viewed from a distance, while making the non-illuminated area 102X difficult to observe, the illumination pattern 102 with an enlarged width W102 can be observed more clearly.

[0375] Furthermore, when determining whether two adjacent projection patterns 101 are separated from each other in the fourth direction D4, the region of each projection pattern 101 is first determined. If the two regions projected by two adjacent projection patterns 101 are separated from each other in the fourth direction D4, the two adjacent projection patterns 101 are evaluated as separated from each other in the fourth direction D4. The region where each projection pattern 101 is projected is determined under the condition that only that projection pattern 101 is projected onto the projection surface 100. The region where each projection pattern 101 is projected is determined to be a region that can obtain an illuminance of 5% or more of the maximum illuminance at a position on the projection surface 100 caused by the projection light forming that projection pattern 101.

[0376] During the lighting process, the number of multiple projection patterns 101 can be changed. That is, during the lighting process, the number of projection patterns 101 that are being illuminated can be changed. The number of projection patterns 101 can be changed by adjusting the presence or absence of power supply to the multiple lighting modules 10. During the lighting process, by adjusting the number of multiple projection patterns 101, the thickness and / or brightness of the lighting pattern 102 can be controlled. By increasing the width of the lighting pattern 102, the lighting pattern 102 can be observed more clearly from a distance. By increasing the brightness of the lighting pattern 102, the lighting pattern 102 can be observed more clearly from a distance.

[0377] For example, the illumination pattern 102 may become difficult to observe due to environmental conditions such as rain or fog. In another example, a moving observer has more difficulty observing the illumination pattern 102 than a stationary observer. Examples of a moving observer include a person riding in a fast-moving vehicle. More specifically, examples of a moving observer include drivers or passengers of cars, railways, ships, airplanes, etc. The thickness and / or brightness of the illumination pattern 102 can be controlled according to the environment or the observer's state to make the illumination pattern 102 easier to observe.

[0378] exist Figure 21B In the example shown, Figure 21A A portion of the multiple projected patterns 101 shown is turned off. Figure 21A Compared to the lighting pattern 102 shown, Figure 21B The illumination pattern 102 shown has a shorter width W102 along the fourth direction D4. Under conditions where the illumination pattern 102 is easily observed, such as... Figure 21B As shown, fewer projection patterns 101 can be projected onto the projection surface 100. Figure 21B The illumination pattern 102 shown can be displayed with low power consumption. In conditions where the illumination pattern 102 is difficult to observe, such as... Figure 21A As shown, a greater number of projection patterns 101 can be projected onto the projection surface 100. For example... Figure 21A As shown, by increasing the width W102 of the lighting pattern 102, the lighting pattern 102 can be made easier to observe.

[0379] exist Figure 21C In the example shown, Figure 21A A portion of the multiple projected patterns 101 shown are turned off. Figure 21C The width W102 of the lighting pattern 102 shown is... Figure 21A The width W102 of the illumination pattern 102 shown is the same. The number of illuminated projection patterns 101 is... Figure 21A The example shown is more than Figure 21C There are many examples shown. Therefore, Figure 21AThe lighting pattern shown is 102 times larger. Figure 21C The illumination pattern 102 shown is observed to be brighter. Under conditions where the illumination pattern 102 is easily observed, such as... Figure 21C As shown, a smaller number of projection patterns 101 can be projected onto the projection surface 100. Figure 21C The illumination pattern 102 shown can be displayed with low power consumption. In conditions where the illumination pattern 102 is difficult to observe, such as... Figure 21A As shown, a greater number of projection patterns 101 can be projected onto the projection surface 100. For example... Figure 21A As shown, by increasing the brightness of the illumination pattern 102, the illumination pattern 102 can be made easier to observe.

[0380] exist Figure 21C In the example shown, the illuminated projection pattern 101 includes a first outermost projection pattern 101X and a second outermost projection pattern 101Y. The first outermost projection pattern 101X is the projection pattern 101 on the first side of the fourth direction D4. The second outermost projection pattern 101Y is the projection pattern 101 on the second side of the fourth direction D4. Figure 21C The width W102 of the lighting pattern 102 shown is... Figure 21A The width W102 of the lighting pattern 102 shown is the same, and is larger than... Figure 21B The width W102 of the lighting pattern 102 shown is [width]. For Figure 21C Regarding the lighting pattern 102 shown, compared to Figure 21B Compared to the lighting pattern 102 shown, it is easier to observe even from a distance.

[0381] exist Figure 21D In the example shown, Figure 21A A portion of the multiple projected patterns 101 shown is turned off. Figure 21B The width W102 of the lighting pattern 102 shown is... Figure 21A The width W102 of the illumination pattern 102 shown is the same. The number of illuminated projection patterns 101 is... Figure 21A The example shown is more than Figure 21D There are many examples shown. Therefore, Figure 21D The lighting pattern 102 shown may be larger than Figure 21A The lighting pattern 102 shown appears slightly dark.

[0382] However, as Figure 21DAs shown, at any position on the projection plane 100 along the same fifth direction D5, the spacing P102X of the first outermost projected pattern 101X is shorter than the spacing P102C of the intermediate projected pattern 101C. Similarly, at any position on the projection plane 100 along the same fifth direction D5, the spacing P102Y of the second outermost projected pattern 101Y is shorter than the spacing P102C of the intermediate projected pattern 101C.

[0383] The first outermost projection pattern 101X is the projection pattern 101 on the first side of the fourth direction D4. The second outermost projection pattern 101Y is the projection pattern 101 on the second side of the fourth direction D4. The intermediate projection pattern 101C is the projection pattern 101 located between the first outermost projection pattern 101X and the second outermost projection pattern 101Y on the fourth direction D4.

[0384] exist Figure 21D In the example shown, the two outer portions of the illumination pattern 102 in the fourth direction D4 are observed to be brighter than the middle portion in the fourth direction D4. Figure 21D The outer contour of the illumination pattern 102 shown can be observed more clearly. On the other hand, since the brightness of the central portion in the fourth direction D4 is reduced, power consumption can be reduced. Therefore, according to... Figure 21D The example shown can reduce power consumption, while the lighting pattern 102 can be clearly observed even from a distance. Figure 21D The lighting pattern 102 shown can be used with Figure 21A The illumination pattern 102 shown is observed to have substantially the same brightness.

[0385] exist Figure 21D In the example shown, at any position on the projection plane 100 in the same fifth direction D5, the spacing P102X of the first outermost projected pattern 101X can be shorter than the spacing P102C of the intermediate projected pattern 101C. Similarly, at any position on the projection plane 100 in the same fifth direction D5, the spacing P102Y of the second outermost projected pattern 101Y can be shorter than the spacing P102C of the intermediate projected pattern 101C. According to this example, at any position on the projection plane 100 in the same fifth direction D5, the two outer portions of the illumination pattern 102 in the fourth direction D4 can be observed brighter than the middle portion in the fourth direction D4. Figure 21D The outer contour of the illumination pattern 102 shown can be observed more clearly. On the other hand, since the brightness of the middle part in the fourth direction D4 is reduced, power consumption can be reduced. Therefore, power consumption can be reduced, and the illumination pattern 102 can be observed more clearly even when viewed from a distance.

[0386] exist Figure 21DIn the example shown, it is also possible that at any arbitrary position on the same projection plane 100 in the fifth direction D5, the arrangement spacing P102X of the first outermost projection pattern 101X is shorter than the arrangement spacing of the projection patterns 101 other than the second outermost projection pattern 101Y. Figure 21D In the example shown, it is also possible that at any arbitrary position on the projection plane 100 in the same fifth direction D5, the arrangement spacing P102Y of the second outermost projection pattern 101Y is shorter than the arrangement spacing of the projection patterns other than the first outermost projection pattern 101X. According to this example, at any arbitrary position on the projection plane 100 in the same fifth direction D5, the two outer portions of the illumination pattern 102 in the fourth direction D4 can be observed brighter than the middle portion in the fourth direction D4. Figure 21D The outer contour of the illumination pattern 102 shown can be observed more clearly. On the other hand, since the brightness at the middle part in the fourth direction D4 is reduced, power consumption can be reduced. Therefore, power consumption can be reduced, and the illumination pattern 102 can be clearly observed even when viewed from a distance.

[0387] exist Figure 21D In the example shown, it is also possible that, at any position on the same projection plane 100 in the fifth direction D5, the arrangement spacing P102X of the first outermost projection pattern 101X is shorter than the arrangement spacing of the projection patterns 101 other than the second outermost projection pattern 101Y. Figure 21D In the example shown, it is also possible that, at any position on the same projection plane 100 in the fifth direction D5, the arrangement spacing P102Y of the second outermost projection pattern 101Y is shorter than the arrangement spacing of the projection patterns other than the first outermost projection pattern 101X. According to this example, at any position on the same projection plane 100 in the fifth direction D5, the two outer portions of the illumination pattern 102 in the fourth direction D4 can be observed brighter than the middle portion in the fourth direction D4. Figure 21D The outer contour of the illumination pattern 102 shown can be observed more clearly. On the other hand, since the brightness at the middle part in the fourth direction D4 is reduced, power consumption can be reduced. Therefore, power consumption can be reduced, and the illumination pattern 102 can be observed more clearly even when viewed from a distance.

[0388] During the illumination process, the brightness of the projected pattern 101 can be changed. The brightness of each projected pattern 101 can be adjusted by the amount of power supplied to the illumination module 10 corresponding to that projected pattern 101. Alternatively, during the illumination process, the brightness of the illumination pattern 102 can be controlled by adjusting the brightness of multiple projected patterns 101. By increasing the brightness of the illumination pattern 102, it becomes easier for the illumination pattern 102 to be observed from a distance.

[0389] For example, the illumination pattern 102 may become difficult to observe due to environmental conditions such as rain or fog. A moving observer has a harder time observing the illumination pattern 102 than a stationary observer. Examples of moving observers include people riding in fast-moving vehicles. More specifically, examples of moving observers include drivers or passengers of cars, railways, ships, airplanes, etc. The brightness of the projected pattern 101 can be controlled according to the environment or the observer's state to make the illumination pattern 102 easier to observe.

[0390] exist Figure 21E In the example shown, Figure 21A The brightness of the multiple projected patterns 101 shown is dimmed. Figure 21A The lighting pattern shown is 102 times larger. Figure 21E The illumination pattern 102 shown is observed to be brighter. Under conditions where the illumination pattern 102 is easily observed, such as... Figure 21E As shown, the output of the lighting module 10 can be reduced and the projection pattern 101 can be projected onto the projection surface 100. Figure 21E The illumination pattern 102 shown can be displayed with low power consumption. Under conditions where the illumination pattern 102 is difficult to observe, such as... Figure 21A As shown, the output of the lighting module 10 can be increased to brightly project the projection pattern 101 onto the projection surface 100. For example... Figure 21A As shown, by increasing the brightness of the illumination pattern 102, the illumination pattern 102 can be made easier to observe.

[0391] exist Figure 21E In the example shown, the brightness of all projected patterns 101 is made to be greater than that of the projected patterns 101. Figure 21A The example shown is dark. (As shown) Figure 21F and Figure 21G As shown, the brightness of only a portion of the multiple projection patterns 101 can also be dimmed.

[0392] like Figure 21F As shown, alternatively, at any arbitrary position on the projection surface 100 along the same fifth direction D5, the first outermost projection pattern 101X can be projected onto the projection surface 100 with a brightness greater than the intermediate projection pattern 101C. Alternatively, at any arbitrary position on the projection surface 100 along the same fifth direction D5, the second outermost projection pattern 101Y can be projected onto the projection surface 100 with a brightness greater than the intermediate projection pattern 101C. That is, in Figure 21F In the example shown, the sides of the lighting pattern 102 in the fourth direction D4 are brighter than the middle part in the fourth direction D4. Figure 21F The outer contour of the illumination pattern 102 shown can be observed more clearly. On the other hand, since the brightness at the center of the fourth direction D4 is reduced, power consumption can be reduced. Therefore, according to... Figure 21F The example shown can reduce power consumption, while the lighting pattern 102 can be clearly observed even from a distance.

[0393] The brightness of the projected pattern is compared by comparing the illuminance at the same location in the fifth direction D5. For example, when comparing the brightness between a first projected pattern and a second projected pattern, the maximum illuminance of the first projected pattern at a specific location in the fifth direction D5 is compared with the maximum illuminance of the second projected pattern. The projected pattern with the greater maximum illuminance is evaluated as a brighter projected pattern.

[0394] exist Figure 21F In the example shown, it is also possible that the first outermost projection pattern 101X is projected onto the projection surface 100 at any position on the same projection surface 100 in the fifth direction D5, and is brighter than the intermediate projection pattern 101C. Alternatively, it is possible that the second outermost projection pattern 101Y is projected onto the projection surface 100 at any position on the same projection surface 100 in the fifth direction D5, and is brighter than the intermediate projection pattern 101C. According to this example, power consumption can be reduced, and the illumination pattern 102 can be observed more clearly even when viewed from a distance.

[0395] like Figure 21G As shown, alternatively, at any arbitrary position on the projection surface 100 along the same fifth direction D5, the first outermost projection pattern 101X can be projected onto the projection surface 100 with a brightness greater than any other projection pattern except the second outermost projection pattern 101Y. Alternatively, at any arbitrary position on the projection surface 100 along the same fifth direction D5, the second outermost projection pattern 101Y can be projected onto the projection surface 100 with a brightness greater than any other projection pattern except the first outermost projection pattern 101X. According to this example, power consumption can be reduced, and the illumination pattern 102 can be observed more clearly even from a distance.

[0396] exist Figure 21G In the example shown, it is also possible that, at any position on the projection surface 100 in the same fifth direction D5, the first outermost projection pattern 101X is projected onto the projection surface 100 brighter than any other projection pattern 101 except the second outermost projection pattern 101Y. Alternatively, it is possible that, at any position on the projection surface 100 in the same fifth direction D5, the second outermost projection pattern 101Y is projected onto the projection surface 100 brighter than any other projection pattern 101 except the first outermost projection pattern 101X. According to this example, power consumption can be reduced, and the illumination pattern 102 can be observed more clearly even when viewed from a distance.

[0397] like Figure 21HAs shown, during the illumination process, a portion of the multiple projection patterns 101 may be blinked. By blinking a portion of the projection patterns 101, the illumination pattern 102 can be made more noticeable. As a result, the illumination pattern 102 displayed on the projection surface 100 can be easily observed from a distance.

[0398] like Figure 21H As shown, it is also possible to continuously illuminate other portions of the projection patterns 101 included in the plurality of projection patterns 101 while flashing a portion of the projection pattern 101. According to this example, the illumination pattern 102 can be continuously displayed on the projection surface 100. Therefore, the illumination pattern 102 displayed on the projection surface 100 can be easily observed from a distance.

[0399] like Figure 21H As shown, the other portion of the continuously illuminated projection pattern 101 may include: a projection pattern 101 located on a first side in the fourth direction D4 of the portion of the projection pattern 101; and a projection pattern 101 located on a second side in the fourth direction D4 of the portion of the projection pattern. The other portion of the continuously illuminated projection pattern 101 may include a first outermost projection pattern 101X and a second outermost projection pattern 101Y. The illuminated projection pattern 101 forms the outer edge of the illumination pattern 102 in the fourth direction D4. That is, the width W102 of the illumination pattern 102 flashing in a portion in the fourth direction D4 is fixed. Therefore, the illumination pattern 102 displayed on the projection surface 100 can be more easily observed from a distance.

[0400] like Figure 22A , Figure 22B and Figure 23 As shown, one or more lighting modules 10X contained in lighting module unit 8 and one or more other lighting modules 10Y contained in lighting module unit 8 can be opposite each other in the fifth direction D5. One or more lighting modules 10X contained in lighting module unit 8 and one or more other lighting modules 10Y contained in lighting module unit 8 can also be separately configured in the fifth direction D5. One or more lighting modules 10X contained in lighting module unit 8 and one or more other lighting modules 10Y contained in lighting module unit 8 can emit light in opposite directions in the fifth direction D5. The central optical path D10X of the projected light of one or more lighting modules 10X contained in lighting module unit 8 (see reference) Figure 23 The central optical path D10Y of the projected light from the other one or more lighting modules 10Y contained in the lighting module unit 8 (see reference). Figure 23 The direction can be opposite in the fifth direction D5. The central optical path of the projected light refers to the direction and orientation in which maximum brightness is obtained from the output end 25a of the illumination module from which the projected light is emitted.

[0401] exist Figure 22A In the example shown, one or more projection patterns 101A and one or more other projection patterns 101B included in the plurality of projection patterns 101 are projected onto the projection surface 100 from positions opposite to each other in the fifth direction D5. Figure 22B As shown, one or more of the multiple projection patterns 101 can also be projected from both sides of the fifth direction D5. All the projection patterns 101 contained in the lighting module unit 8 can also be projected from both sides of the fifth direction D5.

[0402] The fifth direction, D5, is the length direction of the linear lighting pattern 102. According to... Figure 22A , Figure 22B and Figure 23 The example shown reduces the brightness variation of the illumination pattern 102 along its length. Therefore, the illumination pattern 102 can be clearly observed along its entire length, even when viewed from a distance.

[0403] according to Figure 22A , Figure 22B and Figure 23 The example shown demonstrates that even when the projection surface 100 has undulations, unevenness, waves, etc., a lighting pattern 102 can be displayed on the projection surface 100 that is easily observable even from a distance. Figure 23 In the example shown, the projection surface 100 is curved and has a bulge in the center of the illuminated area 103 of the projected projection pattern 101 on the projection surface 100. Even on this projection surface 100, it is possible to display an illumination pattern 102 that is easily observable even from a distance.

[0404] In the example described above, the first lighting module unit 8 includes a plurality of lighting modules 10. A lighting pattern 102 is displayed on the projection surface 100 by projecting a plurality of projection patterns 101 from each of the plurality of lighting modules 10 onto the projection surface 100. In the example described above, the first lighting method includes the step of illuminating the projection surface 100 using the lighting module unit 8. In the lighting step, the lighting pattern 102 is displayed on the projection surface 100 by projecting a plurality of projection patterns 101 from the lighting module unit 8 onto the projection surface 100.

[0405] According to the first illumination module unit 8 and the first illumination method, the illumination pattern 102 projected onto the projection surface 100 is composed of multiple projection patterns 101. Therefore, a large illumination pattern 102 can be displayed on the projection surface 100. By adjusting the shape of the multiple projection patterns 101, a complex illumination pattern 102 can be displayed. By adjusting the brightness of the multiple projection patterns 101, the illumination pattern 102 can be displayed brightly. As a result, an illumination pattern 102 that can be observed from a distance can be displayed on the projection surface 100. Moreover, by displaying a portion or one projection pattern 101, rather than the entire illumination pattern 102, in the structure of each illumination module 10, the overall power consumption of the illumination module unit 8 can be reduced, and the reduction in laser safety can be suppressed.

[0406] In the example described above, the second lighting module unit 8 includes a plurality of lighting modules 10. A plurality of projection patterns 101 projected from each of the plurality of lighting modules 10 onto the projection surface 100 are arranged in a fourth direction D4. The plurality of projection patterns 101 extend in a fifth direction D5, which is not parallel to the fourth direction D4. In the example described above, the second lighting method includes the step of illuminating the projection surface 100 using the lighting module unit 8. In the lighting step, a plurality of projection patterns 101 are projected from the lighting module unit 8 onto the projection surface 100. The plurality of projection patterns 101 are arranged in the fourth direction D4. Each of the plurality of projection patterns 101 extends in a fifth direction D5, which is not parallel to the fourth direction D4.

[0407] According to the second lighting module unit 8 and the second lighting method, the same effects as described above can be achieved as those of the first lighting module unit 8 and the first lighting method. That is, according to the second lighting module unit 8 and the second lighting method, a lighting pattern 102 that can be observed from a distance can be displayed on the projection surface 100.

[0408] Furthermore, according to the second illumination module unit 8 and the second illumination method, the width W102 of the illumination pattern 102 in the fourth direction D4 can be made greater than the width W101 of each projection pattern 101 in the fourth direction D4. By combining multiple projection patterns 101 with narrower widths W101, an illumination pattern 102 with a wider width W102 can be displayed. The inventors have confirmed that by displaying an illumination pattern 102 with a wider width W102 using multiple projection patterns 101 projected staggeredly in the fourth direction D4, it is possible to reduce the total power consumption while making the illumination pattern 102 more eye-catching and easier to observe from a distance. In addition, by projecting multiple projection patterns 101 staggeredly in the fourth direction D4, it is possible to stably suppress the reduction of laser safety.

[0409] In the specific example above, the multiple projected patterns 101 are identical patterns. The multiple projected patterns 101 may also not be identical patterns. The multiple projected patterns 101 may also be different patterns.

[0410] exist Figures 24A to 24C In the example shown, the lighting module unit 8 and the lighting system 5 include first to fourth lighting modules 10A to 10D. Figures 24A to 24C As shown, the first illumination module 10A projects the first projection pattern 1011 onto the projection surface 100. For example... Figure 24A As shown, the second lighting module 10B projects the second projection pattern 1012 onto the projection surface 100. For example... Figure 24B As shown, the third lighting module 10C projects the third projection pattern 1013 onto the projection surface 100. For example... Figure 24C As shown, the fourth illumination module 10D projects the fourth projection pattern 1014 onto the projection surface 100. The first projection pattern 1011 is a quadrilateral pattern. The second to fourth projection patterns 1012 to 1014 are triangular patterns with different orientations.

[0411] exist Figure 24A In the example shown, the first projection pattern 1011 and the second projection pattern 1012 are projected onto the projection surface 100. Figure 24A In the example shown, lighting pattern 102 is displayed Figure 24A The arrow pointing to the right on the paper.

[0412] exist Figure 24B In the example shown, the first projection pattern 1011 and the third projection pattern 1013 are projected onto the projection surface 100. Figure 24B In the example shown, lighting pattern 102 is displayed Figure 24B The downward-pointing arrow on the paper.

[0413] exist Figure 24C In the example shown, the first projection pattern 1011 and the fourth projection pattern 1014 are projected onto the projection surface 100. Figure 24C In the example shown, lighting pattern 102 is displayed Figure 24C The arrow pointing to the left on the paper.

[0414] exist Figures 24A to 24C In the example shown, by appropriately selecting the projection pattern 101, different information can be displayed on the projection surface 100.

[0415] In the specific example described above, the wavelengths of the projected light emitted from the multiple illumination modules 10 can be different among the multiple illumination modules 10. Alternatively, the wavelengths of the projected light emitted from the multiple modules 10 can be the same among the multiple illumination modules 10. The colors of the multiple projected patterns 101 can be different from each other. Alternatively, the colors of the multiple projected patterns 101 can be the same as each other.

[0416] exist Figure 25 In the example shown, the lighting module unit 8 and the lighting system 5 include first to ninth lighting modules 10A to 10I. Figure 25 As shown, the first to ninth lighting modules 10A to 10I project the first to ninth projection patterns 1011 to 1019 onto the projection surface 100, respectively. The first to ninth projection patterns 1011 to 1019 are arranged sequentially in the fifth direction D5. The first to ninth projection patterns 1011 to 1019 have the same arrow pattern. The arrow patterns of the first to ninth projection patterns 1011 to 1019 point towards the first side in the fifth direction D5.

[0417] The first, fourth, and seventh illumination modules 10A, 10D, and 10G illuminate the projection surface 100 with red light (e.g., light with a wavelength of 650nm). The first, fourth, and seventh projection patterns 1011, 1014, and 1017 are projected onto the projection surface 100 with red light.

[0418] The second, fifth, and eighth illumination modules 10B, 10E, and 10H illuminate the projection surface 100 with green light (e.g., light with a wavelength of 550nm). The second, fifth, and eighth projection patterns 1012, 1015, and 1018 are projected onto the projection surface 100 with green light.

[0419] The third, sixth, and ninth illumination modules 10C, 10F, and 10I illuminate the projection surface 100 with blue light (e.g., light with a wavelength of 450nm). The third, sixth, and ninth projection patterns 1013, 1016, and 1019 are projected onto the projection surface 100 with blue light.

[0420] like Figure 26As shown, on the projection surface 100, the projection pattern 101 is first projected with red light, then with green light, and then with blue light, and this cycle continues. Specifically, firstly, the first, fourth, and seventh projection patterns 1011, 1014, and 1017 are projected onto the projection surface 100 with red light through the first, fourth, and seventh illumination modules 10A, 10D, and 10G. Next, the second, fifth, and eighth projection patterns 1012, 1015, and 1018 are projected onto the projection surface 100 with green light through the second, fifth, and eighth illumination modules 10B, 10E, and 10H. Then, the third, sixth, and ninth projection patterns 1013, 1016, and 1019 are projected onto the projection surface 100 with blue light through the third, sixth, and ninth illumination modules 10C, 10F, and 10I. These three cycles can be repeated. According to this illumination method, movement towards the first side in the fifth direction D5 can be facilitated.

[0421] Or, in Figure 25 In the example shown, the first to ninth illumination modules 10A to 10I can project projection light onto the projection surface 100 in this order. The first to ninth projection patterns 1011 to 1019 can be projected onto the projection surface 100 in this order. According to this illumination method, it is possible to induce movement to the first side in the fifth direction D5.

[0422] exist Figures 24A to 26 In the example shown, by changing the projected pattern 101 and the lighting module 10 that projects the pattern 101, a dynamic image similar to an animation can be displayed on the projection surface 100.

[0423] Label Explanation: L1: Central axis; D1: First direction; D2: Second direction; D3: Third direction; AD: Axial; RD: Radial; CD: Circumferential; 5: Illumination system; 8: Illumination module unit; 10: Illumination module; 10A~10I: Illumination module; 20: Light source; 21: Light-emitting part; 22: Terminal; 24A: First cover component; 24B: Second cover component; 25: Optical system; 25a: Emitter; 26: Pattern optical system; 26A: Diffractive optical element; 26B: Light-shielding mask; 27: Lens system; 27A: Collimating optical system; 27B: Imaging Optical system; 28A: First lens; 28B: Second lens; 28C: Third lens; 29a: Light-shielding part; 29b: Light-transmitting part; 30: Housing; 31: Cylindrical part; 31a: Inner surface; 31b: Outer surface; 32: End cylindrical part; 33: First cylindrical part; 34: Second cylindrical part; 35a: End stepped part; 35b: Middle stepped part; 36: Annular groove; 38: Bottom; 38a: Hole; 39: Outer protrusion; 41: First housing component; 42: Second housing component; 43: Third housing component; 47: Fixing member; 49: Fixing member; 50: Cover; 50 c: Contact portion; 51: Side; 52: End; 53: Fixing member; 54: Inner protrusion; 55: Receiving hole; 56: Inner protrusion; 61: External connector; 64: Mark; 65: Detachment suppression mechanism; 66: Plate material; 67: Fixing member; 70A: Circuit board, first circuit board; 70B: Second circuit board; 71: Board; 72: Component; 73: Wiring; 75: Driver IC; 75a: Channel; 76: Socket; 77: Connector; 79: Solder; 90: Connecting component; 91: FPC; 91a: Hole; 92: Board connecting component; 93 : FPC; 95: Fixing component; 98: Fixing component; 100: Projection surface; 101: Projection pattern; 1011-1019: Projection patterns; 101X: First outermost projection pattern; 101Y: Second outermost projection pattern; 101C: Intermediate projection pattern; 101: Projection pattern; 102: Illumination pattern; 102X: Non-illuminated area; 103: Illuminated area; 105: Device with illumination module; 110: Device; 111: Housing; 112: Equipment; 113: Power supply unit; 114: Control unit; 117: Control device; 118: Power supply device.

Claims

1. A lighting module that projects a pattern onto a projection surface, wherein, The lighting module includes: A light source, which emits light; An optical system that faces the light source along the axial direction of the illumination module; A housing that holds the light source and the optical system; as well as The circuit board is electrically connected to the light source. Along the axial direction, the circuit board is at least partially located between the light source and the emitting end of the optical system, wherein light emitted from the light source is emitted from the emitting end of the optical system.

2. The lighting module according to claim 1, wherein, The lighting module also includes an FPC that electrically connects the light source to the circuit board. The light source includes terminals that extend through the FPC. The terminal is electrically connected to the FPC.

3. The lighting module according to claim 1, wherein, The lighting module also includes an FPC that electrically connects the light source to the circuit board. The FPC is mounted on the housing.

4. The lighting module according to claim 1, wherein, The housing includes a cylindrical portion and a bottom connected to the cylindrical portion. The cylindrical portion opens on a first side in the axial direction and connects to the bottom from a second side in the axial direction. The optical system is held inside the cylindrical portion. The light source is held at the bottom.

5. The lighting module according to claim 4, wherein, The cylindrical portion includes a first cylindrical portion and a second cylindrical portion. The first cylindrical portion is located closer to the first side along the axial direction than the second cylindrical portion. The second cylindrical section is thinner than the first cylindrical section. The circuit board is mounted on the second cylindrical section.

6. The lighting module according to claim 1, wherein, The circuit board includes a substrate, and components and wiring disposed on the substrate. The substrate is oriented radially orthogonal to the axial direction.

7. The lighting module according to claim 1, wherein, The lighting module also includes a second circuit board. The circuit board and the second circuit board are arranged circumferentially separated from each other with an axis parallel to the said axis as the center.

8. The lighting module according to claim 5, wherein, The circuit board is annular, with the second cylindrical portion penetrating through it.

9. The lighting module according to claim 8, wherein, The circuit board includes a substrate, and components and wiring disposed on the substrate. The substrate is oriented toward the axial direction.

10. An illumination module that projects a pattern onto a projection surface, wherein, The lighting module includes: A light source, which emits light; An optical system that faces the light source along the axial direction of the illumination module; A housing that holds the light source and the optical system; as well as The circuit board is electrically connected to the light source. The circuit board includes a socket that contacts and is electrically connected to the terminals of the light source. The light source is located axially between the circuit board and the optical system.

11. The lighting module according to claim 10, wherein, In a projection toward a plane orthogonal to the said axis, the circuit board is located at the same position as the housing or inside the housing.

12. The lighting module according to claim 10, wherein, The lighting module also includes a second circuit board, which is at least partially located between the emitting end of the optical system and the light source along the axial direction.

13. The lighting module according to claim 7 or 12, wherein, The circuit board and the second circuit board are electrically connected using an FPC.

14. The lighting module according to claim 10, wherein, The lighting module is provided with a detachment suppression mechanism to prevent the socket from detaching from the terminal.

15. The lighting module according to claim 1 or 10, wherein, The light source includes a laser diode. The circuit board contains a driver IC that drives the laser diode.

16. The lighting module according to claim 15, wherein, The driver IC contains multiple channels connected in parallel. Each of the multiple channels contains a component.

17. The lighting module according to claim 1 or 10, wherein, The circuit board is in contact with the housing.

18. The lighting module according to claim 1 or 10, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. The circuit board is in contact with the cover.

19. The lighting module according to claim 1 or 10, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. The lighting module is a lighting module that is assembled into or installed in other devices for use. At least one of the housing and the cover is fixed to the device.

20. The lighting module according to claim 1 or 10, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. The lighting module is a lighting module that is assembled into or installed in other devices for use. The cover includes a portion that contacts the device. The contact portion is located between the circuit board and the device.

21. The lighting module according to claim 1 or 10, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. At least one of the housing and the cover includes a mark indicating the orientation to be set.

22. The lighting module according to claim 1 or 10, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. The cover includes: a plate-shaped end portion facing the housing in the axial direction; and a cylindrical side portion facing the housing in a radial direction orthogonal to the axial direction.

23. The lighting module according to claim 22, wherein, The lighting module is a lighting module that is assembled into or installed in other devices for use. The connector for electrical connection with the device is positioned offset from the center of the end.

24. The lighting module according to claim 1 or 10, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. In a projection toward a plane orthogonal to the said axis, the cover is located at the same position as the housing or inside the housing.

25. The lighting module according to claim 1 or 10, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. In a projection toward a plane orthogonal to the axis, the cover has a circular profile.

26. The lighting module according to claim 1 or 10, wherein, The lighting module has a cover that partially covers the housing. The circuit board is located between the housing and the cover. In a projection toward a plane orthogonal to the axis, the cover has a circular profile.

27. The lighting module according to claim 1 or 10, wherein, The optical system includes diffractive optical elements and a lens optical system.

28. The lighting module according to claim 1 or 10, wherein, The optical system includes a light-shielding mask and an imaging optical system.

29. A device with a lighting module, comprising: The lighting module according to claim 1 or 10; and A device that is assembled with or has the aforementioned lighting module installed.

30. A lighting module unit, wherein, The lighting module unit comprises a plurality of lighting modules as described in claim 1 or 10. An illumination pattern is displayed on the projection surface by projecting multiple projection patterns from each of the plurality of illumination modules onto the projection surface.

31. The lighting module unit according to claim 30, wherein, The plurality of projection patterns are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

32. A lighting module unit, wherein, The lighting module unit has multiple lighting modules. Multiple projection patterns projected from each of the plurality of lighting modules onto the projection surface are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

33. The lighting module unit according to claim 30, wherein, Each of the plurality of projection patterns is a line.

34. The lighting module unit according to claim 32, wherein, On the projection surface, the plurality of projection patterns are separated from each other in the fourth direction.

35. The lighting module unit according to claim 32, wherein, The plurality of projection patterns includes a first outermost projection pattern, a second outermost projection pattern, and an intermediate projection pattern. The first outermost projected pattern is closest to the first side in the fourth direction. The second outermost projection pattern is closest to the second side in the fourth direction. The intermediate projection pattern is located in the fourth direction between the first outermost projection pattern and the second outermost projection pattern. At a certain position in the fifth direction, the first outermost projection pattern is brighter than the intermediate projection pattern, and the second outermost projection pattern is brighter than the intermediate projection pattern.

36. The lighting module unit according to claim 32, wherein, One or more lighting modules included in the plurality of lighting modules are located opposite each other in the fifth direction.

37. The lighting module unit according to claim 30, wherein, The multiple lighting modules are located in different positions.

38. A lighting system comprising: The lighting module unit as described in claim 30; A power supply for supplying power to the plurality of lighting modules; and Multiple controllers located between the plurality of lighting modules and the power supply, Each of the plurality of controllers enables the power supply from the power source to the corresponding lighting module included in the plurality of lighting modules to be regulated independently of the power supply from the power source to other lighting modules.

39. The lighting system according to claim 38, wherein, Each of the plurality of controllers adjusts the presence or absence and / or amount of power supply to the corresponding lighting module.

40. A lighting method comprising the step of illuminating a projection surface using the lighting module unit of claim 30, wherein, In the lighting process, lighting patterns are displayed on the projection surface by projecting multiple projection patterns from the lighting module unit onto the projection surface.

41. The lighting method according to claim 40, wherein, The plurality of projection patterns are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

42. A lighting method comprising the step of illuminating a projection surface using the lighting module unit of claim 32, wherein, During the lighting process, multiple projection patterns are projected from the lighting module unit onto the projection surface. The plurality of projection patterns are arranged in the fourth direction. Each of the plurality of projection patterns extends in a fifth direction that is not parallel to the fourth direction.

43. The lighting method according to claim 40, wherein, Each of the plurality of projection patterns is a line.

44. The lighting method according to claim 42, wherein, On the projection surface, the plurality of projection patterns are separated from each other in the fourth direction.

45. The lighting method according to claim 42, wherein, In the illumination process, the thickness and / or brightness of the illumination pattern are controlled by adjusting the number of the plurality of projection patterns.

46. ​​The lighting method according to claim 42, wherein, During the illumination process, a portion of the projection patterns included in the plurality of projection patterns are made to flicker.

47. The lighting method according to claim 46, wherein, During the period when one portion of the projected pattern is blinking, another portion of the projected pattern contained within the plurality of projected patterns is illuminated. The other portion of the projection pattern includes: a projection pattern on a first side in the fourth direction relative to the portion of the projection pattern; and a projection pattern on a second side in the fourth direction relative to the portion of the projection pattern.

48. The lighting method according to claim 42, wherein, The plurality of projection patterns includes a first outermost projection pattern, a second outermost projection pattern, and an intermediate projection pattern. The first outermost projected pattern is closest to the first side in the fourth direction. The second outermost projection pattern is closest to the second side in the fourth direction. The intermediate projection pattern is located in the fourth direction between the first outermost projection pattern and the second outermost projection pattern. At a certain position in the fifth direction, the first outermost projection pattern is brighter than the intermediate projection pattern, and the second outermost projection pattern is brighter than the intermediate projection pattern.

49. The lighting method according to claim 42, wherein, One or more projection patterns contained in the plurality of projection patterns, along with one or more other projection patterns contained in the plurality of projection patterns, are projected onto the projection surface from positions that are opposite to each other in the fifth direction.

50. The lighting method according to claim 42, wherein, One or more of the multiple projection patterns are projected onto the projection surface from two or more positions that are opposite each other in the fifth direction.

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