Optical module and lighting system

Abstract

The utility model relates to an optical module and a lighting system. The optical module comprises a light distribution piece and a light source assembly, a plurality of microstructures are arranged on the surface of one side of the light distribution piece, the microstructures are distributed in a rectangular array mode and have the first direction and the second direction in the two sides, and the adjacent microstructures are connected. The orthographic projection of each microstructure has a first maximum length and a second maximum length, and the first maximum length is greater than the second maximum length. The light source assembly is provided with a plurality of light-emitting areas, the light-emitting areas correspond to the microstructures, each light-emitting area is used for projecting long-strip-shaped light spots towards the microstructures, and the length direction of the light spots is consistent with the first direction. When the optical module is applied to the LED lighting device, through scattering and total reflection of the microstructures and light mixing between the microstructures, the light distribution piece of the optical module remarkably improves the light emitting brightness of the light distribution piece, eliminates light source bright spots, forms a uniform lighting area extending in the first direction visually, is free of visual dark areas and is good in visual effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of semiconductor lighting, in particular to an optical module and a lighting system. BACKGROUND

[0002] LED lighting devices are widely used in various scenes due to high efficiency, energy saving and environmental protection, such as high brake lights, which usually include a plurality of light sources arranged regularly. When all the light sources emit light, the plurality of light source bright spots inside can be easily observed, and the visual effect of a continuous and uniform light bar or light band cannot be generated, which is poor and needs to be improved. SUMMARY

[0003] Therefore, it is necessary to provide an optical module and a lighting system to solve the problem that the visual effect is poor due to the plurality of light source bright spots inside being easily observed when the traditional LED lighting device works.

[0004] An optical module comprises:

[0005] A light distribution piece, one side surface of the light distribution piece is provided with a plurality of microstructures, the plurality of microstructures are arranged in a rectangular array and have a first direction and a second direction along two sides, adjacent microstructures are connected, the orthographic projection of each microstructure has a first maximum length in the first direction and a second maximum length in the second direction, and the first maximum length is greater than the second maximum length; and

[0006] A light source assembly, the light source assembly has a plurality of light emitting areas, the plurality of light emitting areas are arranged corresponding to the plurality of microstructures, and each light emitting area is used for projecting a long strip-shaped light spot toward the plurality of microstructures, and the length direction of the light spot is consistent with the first direction.

[0007] In one of the embodiments, the other side surface of the light distribution piece is provided with a light entrance surface, the light entrance surface is arranged corresponding to the plurality of microstructures, the light entrance surface includes a plurality of light entrance areas, and the plurality of light entrance areas are arranged continuously in a row; the plurality of light emitting areas are arranged one by one corresponding to the plurality of light entrance areas, each light emitting area is used for projecting the light spot on the plane where the light entrance surface is located, and the light spot covers the corresponding light entrance area.

[0008] In one of the embodiments, each light emitting area is configured to project the light spot in the shape of a rectangle or in the shape of an ellipse.

[0009] In one of the embodiments, the light source assembly includes a plurality of light emitting chips and a plurality of lenses, the plurality of lenses are arranged one by one corresponding to the plurality of light emitting chips, each light emitting area is formed by the light exit surface of the corresponding lens, and the orthographic projection of the light exit surface of each lens is in the shape of an ellipse.

[0010] In one of the embodiments, the light-out surface of each microstructure is a convex curved surface.

[0011] In one of the embodiments, each microstructure is a cuboid, the light-out surface of each microstructure is an arc surface, and has a long arc edge and a short arc edge connected thereto.

[0012] In one of the embodiments, the orthographic projection of each microstructure is a parallelogram; the first maximum length is a long side of the orthographic projection, and the second maximum length is a short side of the orthographic projection; or the first maximum length is a long diagonal of the orthographic projection, and the second maximum length is a short diagonal of the orthographic projection.

[0013] In one of the embodiments, the orthographic projection is a rhombus.

[0014] In one of the embodiments, the distance between the light source assembly and the light distribution piece is D1, and the distance between adjacent light-emitting areas is D2, where 5≥D1 / D2≥1.

[0015] A lighting system, comprising:

[0016] an optical module as described in any one of the above embodiments; and

[0017] a circuit electrically connected to the light source assembly of the optical module.

[0018] The optical module and the lighting system described above, by arranging a plurality of microstructures in a rectangular array on one side surface of the light distribution piece, and the orthographic projection of each microstructure having a first maximum length greater than a second maximum length, and the first maximum length being in a first direction, each microstructure can scatter more light in the first direction, and the light-out is more divergent, the light-out between adjacent microstructures is sufficiently mixed, and meanwhile the total reflection effect of each microstructure in the first direction is enhanced, thereby increasing the light propagating in the first direction inside the light distribution piece, and significantly improving the overall brightness of the light distribution piece; when applied to an LED lighting device, the optical module significantly improves the light-emitting brightness of the light distribution piece as a whole through the scattering, total reflection of the microstructures and the mixing of light between the microstructures, and the internal light source bright spots cannot be observed, so that the LED lighting device has the characteristics of high brightness and no light source bright spots, can form a uniform illumination area extending in the first direction in vision, has no visual dark area, and has good overall visual effect. Compared with the conventional way of doubling the number of light sources to eliminate light source bright spots, the optical module does not need to increase the number of LED light sources, and significantly reduces the cost of the LED lighting device.

[0019] Moreover, by controlling each light-emitting area to project a long strip of light, the width direction of the long strip of light is consistent with the second direction of the arrayed microstructure, which greatly reduces the light emission range of each light-emitting area in the second direction, makes full use of the light emission of the light-emitting area, greatly reduces the light emission loss in the second direction of the light distribution component, improves the light energy utilization rate, and further enhances the light emission brightness of the optical module.

[0020] Furthermore, compared to traditional thick-walled lens designs or double-layer lens designs, the thickness of the light distribution component is significantly reduced, resulting in a simpler structure. Its single-layer lens design can replace the traditional double-layer lens design, significantly reducing light propagation loss, increasing light distribution brightness, and greatly saving materials, further reducing costs. Compared to traditional diffuser scattering methods, the use of a microstructure array to scatter light avoids significant light loss and achieves high light output brightness. Attached Figure Description

[0021] Figure 1 This is a partial structural diagram of an optical module in one embodiment of this application.

[0022] Figure 2 for Figure 1 A schematic diagram of the light distribution component of the optical module.

[0023] Figure 3 for Figure 2 Top view of the light distribution component.

[0024] Figure 4 for Figure 1 Front view of the optical module.

[0025] Figure 5 for Figure 1 Left view of the optical module.

[0026] Figure 6 for Figure 1 A top view of the light source assembly of the optical module.

[0027] Figure 7 for Figure 2 Front view of the central light distribution component.

[0028] Figure 8 for Figure 2 Left view of the central light distribution component.

[0029] Figure 9 This is a partial structural diagram of the optical module in another embodiment of this application.

[0030] Figure 10 for Figure 9 A partial top view of the light distribution component of the optical module.

[0031] Figure 11 for Figure 10Cross-sectional view of the light distribution member along I-I.

[0032] Figure 12 As Figure 10 Cross-sectional view of the light distribution member along II-II.

[0033] Figure 13 Module block diagram of the lighting system in an embodiment of the present application.

[0034] Explanation of reference signs:

[0035] 100 - optical module; 110 - light source assembly; 111 - light emitting region; 112 - light spot; 113 - circuit board; 114 - light source device; 115 - light emitting chip; 116 - lens; 120 - light distribution member; 121 - scattering structure; 122 - light entrance surface; 123 - light entrance region; 124 - base; 125 - microstructure; 126 - long side surface; 127 - short side surface; 128 - long arc edge; 129 - short arc edge; 130 - orthographic projection; 132 - first maximum length; 134 - second maximum length; 136 - cross-sectional long arc; 138 - cross-sectional short arc;

[0036] 200 - lighting system; 210 - circuit. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and that the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or identifying the number of the indicated technical features. Therefore, a feature defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature and the like, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0042] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0043] Please refer to Figures 1 to 3 , Figure 1 shows a partial structure schematic diagram of an optical module in an embodiment of the present application, Figure 2 shows Figure 1 a structure schematic diagram of a light distribution member of an optical module, Figure 3 shows Figure 2The top view of the light distribution member, the embodiment of the present application provides the optical module 100, including the light source assembly 110 and the light distribution member 120. One side surface of the light distribution member 120 is provided with the scattering structure 121, the scattering structure 121 includes a plurality of microstructures 125, a plurality of microstructures 125 are distributed in a rectangular array and have a first direction x and a second direction y along two sides, and adjacent microstructures 125 are connected. The orthographic projection 130 of each microstructure 125 has a first maximum length 132 in the first direction x and a second maximum length 134 in the second direction y, and the first maximum length 132 is greater than the second maximum length 134. The light source assembly 110 has a plurality of light emitting areas 111, and the plurality of light emitting areas 111 are arranged corresponding to the plurality of microstructures 125, each light emitting area 111 is used to project a strip-shaped light spot 112 towards the plurality of microstructures 125, and the length direction of the light spot 112 is consistent with the first direction x.

[0044] By arranging a plurality of microstructures 125 in a rectangular array on one side surface of the light distribution member 120, and the first maximum length 132 of the orthographic projection 130 of each microstructure 125 is greater than the second maximum length 134, because the first maximum length 132 is in the first direction, each microstructure 125 can scatter more light in the first direction x, and the light emission is more divergent, the light emission between adjacent microstructures 125 is fully mixed, at the same time, the total reflection effect of each microstructure 125 in the first direction x is enhanced, and the light propagating in the first direction x inside the light distribution member 120 is increased, which significantly improves the overall brightness of the light distribution member 120; when applied to an LED lighting device, the optical module 100 significantly improves the light emission brightness of the light distribution member 120 through the scattering, total reflection of the microstructure 125 and the light mixing between the microstructures 125, and the internal light source bright spot (light emitting area 111) cannot be observed, so that the LED lighting device has the characteristics of high brightness and no light source bright spot, and can form a uniform illumination area extending in the first direction x in vision, without visual dark area, and has good overall visual effect. Compared with the traditional way of doubling the number of light sources to eliminate the light source bright spot, the optical module 100 does not need to increase the number of LED light sources, which significantly reduces the cost of the LED lighting device.

[0045] Moreover, by controlling each light emitting area 111 to project a strip-shaped light spot 112, the width direction of the strip-shaped light spot 112 is consistent with the second direction y of the arrayed microstructure 125, and the light emission range of each light emitting area 111 in the second direction y is greatly reduced, the light emission of the light emitting area 111 is fully utilized, the light emission loss in the second direction y of the light distribution member 120 is greatly reduced, the light energy utilization rate is improved, and the light emission brightness of the optical module 100 is further improved.

[0046] When the LED lighting device is a high brake light, a traditional high brake light uses a thick-wall lens, a double-layer lens or a diffusion sheet for light distribution to achieve a preset light efficiency. However, the overall thickness of the thick-wall lens is large, one side of which is provided with a reflection structure, and the overall structure is complex, which affects the light brightness. The double-layer lens processes the light emitted by the light source twice, which also affects the light brightness. The diffusion sheet diffuses the light emitted by the lens, and the scattering effect is good, but the light brightness is greatly reduced. Compared with the above traditional methods, the thickness of the light distribution piece 120 of the present application is obviously reduced, and the structure is simple. The single-layer lens design of the present application can replace the traditional double-layer lens design, the light propagation loss is obviously reduced, the light distribution brightness is high, and the material is greatly saved, and the cost is further reduced.

[0047] It should be noted that the application scenario of the optical module 100 can be but is not limited to a vehicle lamp, which includes but is not limited to a headlamp, a daytime running lamp, a brake light, a turn signal lamp, a fog lamp and a head-up display system lamp. Obviously, the optical module 100 can also be applied to other lighting scenarios, such as smart home appliances, drones or robots, etc. The above-mentioned "visual dark area", "light source bright spot" and "visual effect" are from the perspective of human eye observation, and have no direct relationship with the uniformity of the light spot projected on the plane. Taking a strip-shaped high brake light as an example, when it is turned on, the observer of the rear vehicle can visually see a uniform and continuous elongated light strip without dark areas or bright spots.

[0048] Please refer to Figures 4 to 6 , Figure 4 shows a partial front view of the optical module in the embodiment, Figure 5 shows a left view of the optical module in the embodiment, Figure 6 shows a partial top view of the light source assembly of the optical module in the embodiment, and Figure 1 The other side surface of the light distribution piece 120 is provided with a light entrance surface 122, and the light entrance surface 122 is provided with a plurality of microstructures 125. The light entrance surface 122 includes a plurality of light entrance areas 123, and the plurality of light entrance areas 123 are arranged in series. The plurality of light emitting areas 111 and the plurality of light entrance areas 123 are one-to-one corresponding. Each light emitting area 111 is used to project a light spot 112 on the plane where the light entrance surface 122 is located, and the light spot 112 covers the corresponding light entrance area 123, so that the entire light entrance surface 122 is irradiated by the light source assembly 110. Among them, the coverage area of the light spot 112 should be slightly larger than the area of the light entrance area 123, so as to avoid the situation that part of the light entrance surface 122 has no incident light due to accidental deviation of the light spot 112.

[0049] The light source assembly 110 is a device assembly, which includes a circuit board 113 and a plurality of light source devices 114, the plurality of light source devices 114 are arranged on the circuit board 113 in a spaced manner and are arranged in one-to-one correspondence with the plurality of light-in areas 123. Each light source device 114 includes a light emitting chip 115 and a lens 116, and the light emitting area 111 is formed by the light emitting surface of the lens 116. Wherein, the light emitting chip 115 can be but not limited to an LED chip. It can be understood that in other embodiments, the light source assembly 110 is a COB assembly, which can include a circuit board, a plurality of light emitting chips and a plurality of lenses, the plurality of light emitting chips are arranged on the circuit board in a spaced manner, and the plurality of lenses are arranged in one-to-one correspondence with the plurality of light emitting chips.

[0050] Therefore, the light source assembly 110, whether it is a COB assembly or a device assembly, includes a plurality of light emitting chips 115 and a plurality of lenses 116, the plurality of lenses 116 are arranged in one-to-one correspondence with the plurality of light emitting chips 115, and each light emitting area 111 is formed by the light emitting surface of the corresponding lens 116. The light emitting surface of the lens 116 can project a long strip-shaped light spot 112.

[0051] Please refer to Figure 4 The distance between the light source assembly 110 and the light distribution piece 120 is D1, and the distance between adjacent light emitting areas 111 is D2, wherein 5≥D1 / D2≥1. Obviously, the larger the ratio is, the larger the area of the light spot 112 projected by the single light emitting area 111 on the plane where the light-in surface 122 is located is, and the larger the radiation range in the length direction is, and the number of light sources can be appropriately reduced, thereby further reducing the cost. In the present embodiment, D1 / D2 can be but not limited to 1.8, and both a larger radiation range and a high light emitting brightness are achieved, so that the light emitting brightness of the optical module 100 can be ensured while the number of light emitting areas 111 is reduced. Wherein, D1 is the distance between the bottom surface of the light source device 114 (the top surface of the circuit board 113) and the light-in surface 122, and D2 is the center distance between adjacent light source devices 114.

[0052] Please refer to Figure 1 Each light emitting area 111 is used to project a rectangular light spot 112, and each light-in area 123 is rectangular. Thus, after the light distribution of the light distribution piece 120, a light strip or a light band can be observed, which is uniform and continuous. Moreover, each lens 116 can converge the light emitted by the light emitting chip 115 in the width direction, so as to adapt to the width of the light-in area 123, reduce the light emission waste in the width direction, improve the light emission utilization rate and the light emitting brightness, and reduce the power consumption. It should be noted that the light spot 112 projected by each light emitting area 111 is basically rectangular, which is not limited to a strict rectangle, but can be a rectangular shape.

[0053] Each light emitting area 111 is configured to project a light spot 112 with a width greater than that of the light inlet area 123 and a length greater than that of the light inlet area 123, so that each light spot 112 can completely cover the corresponding light inlet area 123 and overlap between adjacent light inlet areas 123, thereby improving the brightness at the abutting position between the light inlet areas 123 and eliminating visual dark areas.

[0054] Each light emitting area 111 has a light emitting angle in the width direction greater than or equal to 10° and less than 40°. In the present embodiment, the light emitting angle of each light emitting area 111 in the width direction can be, but is not limited to, 30°.

[0055] Each light emitting area 111 has a light emitting angle in the length direction greater than 60° and less than or equal to 175°. In the present embodiment, the light emitting angle of each light emitting area 111 in the length direction can be, but is not limited to, 160°.

[0056] Please refer to Figure 6 In order to project a light spot 112 in the shape of a rectangle, the orthographic projection of the light emitting surface of each lens 116 is in the shape of an ellipse, which has a major axis and a minor axis. In other embodiments, the lens 116 can be in the shape of a quadrangular pyramid, the large end surface of which is the light emitting surface and is in the shape of a rectangle; the lens 116 can also be replaced by a reflecting cup, the inner cavity of which is also in the shape of a quadrangular pyramid, and the light emitting chip is located in the reflecting cup, and the light emitted by the light emitting chip is reflected by the reflecting cup and output as a light spot 112 in the shape of a rectangle.

[0057] Please refer to Figure 2 and Figure 3 The light distribution member 120 further includes a base body 124, the scattering structure 121 is arranged on one side surface of the base body 124, and the light inlet surface 122 is arranged on the other side surface of the base body 124. In the present embodiment, the orthographic projection 130 of the microstructure 125 is a projection projected on one side surface of the base body 124 in a forward direction, and each microstructure 125 is a microlens.

[0058] The base body 124 is in the shape of a cuboid, and the shape is not limited thereto. The plurality of microstructures 125 cover one side surface of the base body 124 and are in the shape of a rectangle, wherein the first direction x is the length direction of the arrayed microstructures 125, and the second direction y is the width direction of the arrayed microstructures 125. The arrayed microstructures 125 make full use of one side surface of the base body 124, and the light incident from the light inlet surface 122 can basically pass through the arrayed microstructures 125 and be scattered out. In other embodiments, the arrayed microstructures 125 can only occupy part of one side surface of the base body 124, and the other part can be used as a mounting surface to contact other elements. The light inlet surface 122 on the other side of the base body 124 is arranged corresponding to the arrayed microstructures 125, and the area occupied by the light inlet surface 122 can be slightly smaller than or equal to the area occupied by the arrayed microstructures 125.

[0059] In order to reduce the loss of light, the side surface of the base 124 is provided with a reflective layer (not shown), which can be formed by spraying, electroplating reflective material or pasting reflective film, so as to reflect the light propagating to the side surface of the base 124, further reduce the light propagation loss, and help to further improve the light brightness of the light distribution component 120.

[0060] The thickness of the base 124 is 2mm-15mm, so that the overall thickness of the light distribution component 120 is smaller, further reducing the use of materials, and at the same time shortening the propagation path of the incident light in the base 124, so that the light is more easily transmitted through the base 124, and the light propagation loss in the base 124 is reduced. Combined with the arrayed microstructure 125, the light brightness of the light distribution component 120 is higher, and the light source bright spot and visual dark area are better eliminated, and a more uniform and continuous lighting area visual effect is produced. In the embodiment, the thickness of the base 124 can be, but is not limited to, 5mm or 6mm.

[0061] Please refer to Figure 3 The orthographic projection 130 of the microstructure 125 is a parallelogram, specifically a rectangle, the first maximum length 132 is the long side of the orthographic projection 130, and the second maximum length 134 is the short side of the orthographic projection 130. Since the light distribution component 120 is in the shape of a cuboid as a whole, each microstructure 125 is also in the shape of a cuboid, and the length directions are the same, and the light distribution component 120 can form a uniform and continuous light strip or light band in vision after light distribution. Moreover, the microstructures 125 in the shape of a cuboid can be seamlessly spliced in the first direction x and the second direction y, so as to increase the number of microstructures 125 in a unit area, further improve the light scattering effect, and the light mixing effect between adjacent microstructures 125 is better, so that the overall light distribution is more uniform and the brightness is higher. In an alternative embodiment, the orthographic projection 130 of each microstructure 125 can be a hexagon or an octagon, and the overall length thereof in the first direction x is greater than that in the second direction y.

[0062] The ratio of the long side to the short side of the orthographic projection 130 of the microstructure 125 is 1.2-10. Obviously, the larger the ratio is, the longer the long side is, and the scattering effect of the microstructure 125 in the length direction is improved.

[0063] Further, the ratio of the long side to the short side of the orthographic projection 130 of the microstructure 125 is 1.3-1.7, so as to take into account the scattering effect in the length direction and the width direction. In the embodiment, the ratio of the long side to the short side of the orthographic projection 130 of the microstructure 125 can be 1.4, 1.5 or 1.7, but is not limited thereto.

[0064] Please refer to Figure 7 and Figure 8 , Figure 7 shows a partial front view of the light distribution component of the optical module in the embodiment,Figure 8 A partial left view of the light distribution component of the optical module in the embodiment is shown, which is combined with Figure 2 The height h1 of the long side surface 126 of each microstructure 125 is greater than the height h2 of the short side surface 127, so as to increase the area of the light emitting surface in the length direction and improve the scattering effect of the microstructure 125 in the length direction.

[0065] The light emitting surface of each microstructure 125 is a convex curved surface, and the area of the convex curved surface is relatively large, which is conducive to enhancing the scattering effect. In other embodiments, the microstructure 125 can be a convex ridge structure, such as a triangular ridge, and the light emitting surface is two intersecting inclined surfaces.

[0066] Further, the light emitting surface of each microstructure 125 is an arc surface and has a long arc edge 128 and a short arc edge 129 connected thereto, in other words, the light emitting surface is an arc surface formed by moving the short arc edge 129 along the long arc edge 128 or moving the long arc edge 128 along the short arc edge 129. Under the same projection area, the area of the light emitting surface of each microstructure 125 is larger, which further improves the light emitting and scattering effect. In other embodiments, each microstructure 125 can be in a cylindrical shape or a semicircular strip shape.

[0067] The curvature of part of the long arc edge 128 is equal to the curvature of the short arc edge 129, which is easy to form and process. In this case, the radii of the long arc edge 128 and the short arc edge 129 are the same, but the arc of the long arc edge 128 is greater than the arc of the short arc edge 129, that is, the short arc edge 129 can completely coincide with the central part of the long arc edge 128.

[0068] The light distribution component 120 is an integral structure, which can be made by a thermal reflow method, a micro-plastic stamping method or a micro-droplet jetting method. The material of the light distribution component 120 can be, but is not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), optical glass or silicone. When the light distribution component 120 is made of PMMA or PC, it has good impact resistance and optical performance, which meets the application scene requirements of vehicle lamps.

[0069] Please refer to Figure 9 , Figure 9 A partial structure schematic view of an optical module in another embodiment of the application is shown. Compared with the optical module 100 in the above embodiment, each light emitting area 111 of the optical module 100 in the embodiment is used to project an elliptical light spot 112, and each light entering area 123 is in a rectangular shape. In order to project an elliptical light spot 112, the lens 116 can be in an elliptical shape, and the orthographic projection of the light emitting surface thereof is in an elliptical shape and has a major axis and a minor axis. It should be noted that the shape of the light spot 112 projected by each light emitting area 111 is not limited to a strict ellipse, but is generally elliptical or similar to an ellipse.

[0070] Each light-emitting area 111 is configured such that the minor axis of the projected light spot 112 is greater than the width of the incident light area 123, and the major axis is greater than the length of the incident light area 123, thus covering the incident light area 123. The light spots 112 on adjacent incident light areas 123 overlap each other, increasing the brightness of adjacent positions between incident light areas 123 and eliminating visual dark areas.

[0071] Please see Figures 10 to 12 , Figure 10 A partial top view of the light distribution component of the optical module in this embodiment is shown. Figure 11 It shows Figure 10 A cross-sectional view of the central light distribution component along line II. Figure 12 It shows Figure 10 In the cross-sectional view along II-II of the light distribution element, the orthographic projection 130 of each microstructure 125 is rhomboid. The first maximum length 132 is the long diagonal of the orthographic projection 130, and the second maximum length 134 is the short diagonal of the orthographic projection 130. The area of ​​each microstructure 125 is larger in the middle and smaller at the corners, allowing for better light scattering in its central region. Its corners are joined to three adjacent microstructures 125 in both the first x and second y directions, resulting in more thorough light mixing at these joints. These design features effectively reduce light saturation. In other embodiments, the orthographic projection 114 of the microstructure 125 can also be a parallelogram other than a rectangle or rhombus.

[0072] The height h3 of the cross section on the long diagonal of each microstructure 125 is greater than the height h4 of the cross section on the short diagonal, thereby increasing the area of ​​the light-emitting surface in the first direction x and further improving the scattering effect of the microstructure 125 in the first direction x.

[0073] Each microstructure 125 has a convex curved surface as its light-emitting surface. The area of ​​the convex curved surface is relatively large, which is beneficial to enhancing the scattering effect.

[0074] Furthermore, the light-emitting surface of each microstructure 125 is arc-shaped, with a long arc 136 on its long diagonal and a short arc 138 on its short diagonal. The centers of the long arc 136 and the short arc 138 intersect. Under the same projected area, the area of ​​the light-emitting surface of each microstructure 125 is larger, and the light scattering effect is better.

[0075] The curvature of the long arc 136 in the cross section is equal to the curvature of the short arc 138 in the cross section, making it easier to form and process. The long arc 136 and the short arc 138 in the cross section have the same radius, but the curvature of the long arc 136 in the cross section is greater than that of the short arc 138 in the cross section, meaning that the center part of the short arc 138 in the cross section can completely coincide with the center part of the long arc 136 in the cross section.

[0076] As for other aspects of the optical module in the embodiment, they are basically the same as those in the above-mentioned embodiments, and the specific contents can be referred to the description of the above-mentioned embodiments, which will not be repeated here.

[0077] Please refer to Figure 13 , Figure 13 A block diagram of the lighting system in an embodiment of the present application is shown, and the lighting system 200 in an embodiment of the present application comprises the optical module 100 and the circuit 210, and the circuit 210 is electrically connected with the light source assembly 110 of the optical module 100. The specific structure of the optical module 100 is referred to the above-mentioned embodiments, and since the lighting system 200 in the embodiment adopts all the technical solutions of the above-mentioned embodiments, it also has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. The circuit board 113 of the light source assembly 110 can be provided with a controller (not shown), which is electrically connected with the circuit 210 and receives the control signal. Taking the application in the high-mounted brake light as an example, when the car brakes, the circuit 210 transmits the brake signal to the controller, and the controller lights all the light source devices 114 according to the brake signal.

[0078] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0079] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. An optical module, characterized in that, The optical module comprises: a light source assembly (110) and a light distribution member (120); one side surface of the light distribution member (120) is provided with a plurality of microstructures (125) arranged in a rectangular array and having a first direction and a second direction along two sides, adjacent microstructures (125) are connected, and the orthographic projection (130) of each microstructure (125) has a first maximum length (132) in the first direction and a second maximum length (134) in the second direction, the first maximum length (132) being greater than the second maximum length (134); the light source assembly (110) has a plurality of light emitting areas (111) corresponding to the plurality of microstructures (125), and each light emitting area (111) is configured to project a long strip-shaped light spot (112) toward the plurality of microstructures (125), the length direction of the light spot (112) being consistent with the first direction.

2. The optical module of claim 1, wherein the other side surface of the light distribution member (120) is provided with a light entrance surface (122) corresponding to the plurality of microstructures (125), and the light entrance surface (122) comprises a plurality of light entrance areas (123) arranged continuously in rows; the plurality of light emitting areas (111) and the plurality of light entrance areas (123) are arranged one-to-one, and each light emitting area (111) is configured to project the light spot (112) on the plane where the light entrance surface (122) is located, the light spot (112) covering the corresponding light entrance area (123).

3. The optical module according to claim 2, wherein Each light emitting area (111) is configured to project the light spot (112) in the shape of a rectangle or an ellipse.

4. The optical module according to claim 3, wherein The light source assembly (110) comprises a plurality of light emitting chips (115) and a plurality of lenses (116), the plurality of lenses (116) are arranged one-to-one corresponding to the plurality of light emitting chips (115), each light emitting area (111) is formed by the light exit surface of the corresponding lens (116), and the orthographic projection of the light exit surface of each lens (116) is in the shape of an ellipse.

5. The optical module according to claim 1, wherein The light exit surface of each microstructure (125) is a convex curved surface.

6. The optical module according to claim 5, wherein Each microstructure (125) is a square, the light exit surface of each microstructure (125) is an arc surface, and has a long arc edge (128) and a short arc edge (129) connected.

7. The optical module of claim 1, wherein the orthographic projection (130) of each microstructure (125) is a parallelogram; the first maximum length (132) is the long side of the orthographic projection (130), and the second maximum length (134) is the short side of the orthographic projection (130); or the first maximum length (132) is the long diagonal of the orthographic projection (130), and the second maximum length (134) is the short diagonal of the orthographic projection (130). The orthographic projection (130) is a rhombus.

8. The optical module according to claim 7, wherein ​ 9. The optical module according to any one of claims 1 to 8, wherein The distance between the light source assembly (110) and the light distribution member (120) is D1, and the distance between adjacent light emitting areas (111) is D2, wherein 5≥D1 / D2≥1.

10. A lighting system, characterized by Comprise: An optical module (100), the optical module (100) is the optical module (100) in any one of claims 1 to 9; And A circuit (210), the circuit (210) is electrically connected with the light source assembly (110) of the optical module (100).

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