Optical module
By using a rectangular array of lenses and light source modules in the optical module, the light is diffused to eliminate dark areas, solving the cost problem caused by the increase in the number of light sources in traditional LED lighting devices, and achieving uniform lighting and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN OPTISEEN TECHNOLOGY CO LTD
- Filing Date
- 2025-06-29
- Publication Date
- 2026-07-03
AI Technical Summary
The problem of significantly increased costs due to the increased number of LED light sources in traditional LED lighting devices.
An optical module is used, which includes multiple first lens sections arranged in a rectangular array on one side surface of the optical element. The light-emitting surface of each lens section is a convex curved surface. Combined with the light-emitting surface of the light source module, they are arranged at intervals along a first direction to form a long strip of light area. The design of the lens section diffuses the light to eliminate dark areas and avoids increasing the number of light sources.
It achieves a uniform visual lighting effect and reduces the cost of LED lighting devices.
Smart Images
Figure CN224454404U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of semiconductor light-emitting technology, and in particular to an optical module. Background Technology
[0002] To present a uniform, strip-shaped luminous area, traditional LED lighting devices, such as high-mounted brake lights, typically employ densely packed LED light sources on a strip-shaped circuit board. The significant overlap of the luminous areas of these LEDs on the board visually eliminates dark areas between adjacent LEDs, allowing following drivers to see a uniform strip of red light and better alerting them to brake. However, this significant increase in the number of LEDs leads to a substantial rise in the cost of LED lighting devices. Summary of the Invention
[0003] Therefore, it is necessary to provide an optical module to address the problem of significantly increased costs in traditional LED lighting devices due to the substantial increase in the number of LED light sources.
[0004] An optical module, comprising:
[0005] An optical element has a plurality of first lens portions on one side surface. These first lens portions are arranged in a rectangular array and have a first direction and a second direction. Adjacent first lens portions are connected. The light-emitting surface of each first lens portion is a convex curved surface. The orthographic projection onto one side surface of the optical element has a first central axis and a second central axis. The direction of the second central axis is consistent with the first direction. The light-emitting surface of each first lens portion has intersecting first and second lines. The orthographic projection of the first line coincides with the first central axis, and the orthographic projection of the second line coincides with the second central axis. The first line is the topmost line.
[0006] The light source module has multiple light-emitting surfaces, which are disposed corresponding to the multiple first lens portions and are arranged at intervals along the first direction. Each light-emitting surface is a convex curved surface and is used to project a long strip of light area toward the other side surface of the optical element. The length direction of the light area is consistent with the first direction.
[0007] In one embodiment, the light source module includes a substrate and a plurality of light source devices, which are spaced apart on the substrate along the first direction. Each light source device includes a base, a light-emitting chip, and a light source lens. The base has a groove, and at least one light-emitting chip is disposed in each groove. Each light source lens is sealed on the top of the base and spaced apart from the corresponding light-emitting chip. The light-emitting surface of each light source lens forms a light-emitting surface.
[0008] In one embodiment, each of the light source lenses has two opposing cut-off sides arranged along the first direction, and the light-emitting surface of each light source lens is elliptical in orthographic projection onto the substrate, with its major axis cut off at both ends by the cut-off sides.
[0009] In one embodiment, the optical element is cuboid, each of the light regions is rectangular, the length direction of each light region is consistent with the length direction of the optical element, and the width direction of each light region is consistent with the width direction of the optical element; or the optical element is cuboid, each of the light regions is elliptical, the major axis direction of each light region is consistent with the length direction of the optical element, and the minor axis direction of each light region is consistent with the width direction of the optical element.
[0010] In one embodiment, the second line is an arc.
[0011] In one embodiment, the first line is a straight line.
[0012] In one embodiment, the orthographic projection of the light-emitting surface of each of the first lens portions onto one side surface of the optical element is a parallelogram.
[0013] In one embodiment, the plurality of first lens portions are arranged in a rectangular array, the first direction being the length direction and the second direction being the width direction; the orthographic projection of the light-emitting surface of each first lens portion onto one side surface of the optical element is rectangular.
[0014] In one embodiment, the other side surface of the optical element is provided with a plurality of second lens portions, which are arranged in a rectangular array and are arranged in a one-to-one correspondence with the plurality of first lens portions, and adjacent second lens portions are connected; the light-incident surface of each second lens portion is arranged in a concave curved surface or a convex curved surface, and its orthographic projection on the other side surface of the optical element is rectangular, and its arrangement direction intersects with the arrangement direction of the light-outceasing surface of the corresponding first lens portion.
[0015] In one embodiment, the arrangement direction of the light-incident surface of each second lens portion is perpendicular to the arrangement direction of the light-outceasing surface of the corresponding first lens portion.
[0016] The aforementioned optical module, by setting multiple first lens sections arranged in a rectangular array on one side surface of the optical element, with the light-emitting surface of each first lens section being a convex curved surface, can diffuse light. When each light-emitting surface of the light source module projects a light area extending along a first direction, because the first line is the topmost line, the diffused light is emitted to both sides of the first line, that is, the diffused light diffuses and radiates along the first direction, which can visually form a uniform illumination area that continues along the first direction, with no visual dark areas, resulting in a good overall visual effect. Compared with the traditional method of increasing the number of LED light sources to eliminate dark areas, the optical module does not require increasing the number of light sources, significantly reducing costs when applied to LED lighting devices. Attached Figure Description
[0017] Figure 1 This is a partial structural diagram of an optical module in one embodiment of this application.
[0018] Figure 2 for Figure 1 Schematic diagram of the optical module.
[0019] Figure 3 for Figure 1 A magnified view of region A of the optical module.
[0020] Figure 4 for Figure 1 A top view of the optical components of the optical module.
[0021] Figure 5 for Figure 1 A schematic diagram of the optical components in the optical module.
[0022] Figure 6 for Figure 5 A magnified view of region B of the optical element.
[0023] Figure 7 for Figure 1 A bottom view of the optical components of the optical module.
[0024] Figure 8 This is a schematic diagram of the structure of the optical element of the optical module in another embodiment of this application.
[0025] Figure 9 for Figure 8 A magnified view of region C of the optical element.
[0026] Explanation of reference numerals in the attached figures:
[0027] 100 - Optical module; 110 - Optical element; 111 - First lens section; 112 - First line; 113 - Second line; 114 - Second lens section; 115 - Third line; 116 - Fourth line; 120 - Light source module; 121 - Light-emitting surface; 122 - Light area; 123 - Substrate; 124 - Light-emitting chip; 125 - Light source lens; 126 - Groove; 127 - Cut-off side;
[0028] X - First direction; Y - Second direction; L1 - First central axis; L2 - Second central axis; L3 - Third central axis; L4 - Fourth central axis. Detailed Implementation
[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0035] Please see Figures 1 to 4 , Figure 1 A partial structural schematic diagram of an optical module in one embodiment of this application is shown. Figure 2 It shows Figure 1 Schematic diagram of the optical module. Figure 3 It shows Figure 1 An enlarged view of region A of the optical module. Figure 4 It shows Figure 1A top view of the optical elements of an optical module. An embodiment of this application provides an optical module 100 including an optical element 110 and a light source module 120. A plurality of first lens portions 111 are provided on one side surface of the optical element 110. The plurality of first lens portions 111 are arranged in a rectangular array and have a first direction X and a second direction Y. Adjacent first lens portions 111 are connected. The light-emitting surface of each first lens portion 111 is a convex curved surface, and its orthographic projection on one side surface of the optical element 110 has a first central axis L1 and a second central axis L2. The direction of the second central axis L2 is consistent with the first direction X. The light-emitting surface of each first lens portion 111 has intersecting first lines 112 and second lines 113. The orthographic projection of the first line 112 coincides with the first central axis L1, and the orthographic projection of the second line 113 coincides with the second central axis L2. The first line 112 is the topmost line. The light source module 120 has multiple light-emitting surfaces 121, which are disposed corresponding to multiple first lens portions 111 and are arranged at intervals along the first direction X. Each light-emitting surface 121 is a convex curved surface and is used to project a strip-shaped light area 122 onto the other side surface of the optical element 110. The length direction of the light area 122 is consistent with the first direction X.
[0036] By providing a plurality of first lens portions 111 arranged in a rectangular array on one side surface of the optical element 110, each first lens portion 111 having a convex curved light-emitting surface, light can be diffused. When each light-emitting surface 121 of the light source module 120 projects a light area 122 extending along the first direction X, because the first line 112 is the topmost line, the diffused light is emitted to both sides of the first line 112, that is, the diffused light diffuses and radiates along the first direction X, which can visually form a uniform illumination area extending along the first direction X, without any visual dark areas, resulting in a good overall visual effect. Compared with the traditional method of increasing the number of LED light sources to eliminate dark areas, the optical module 100 does not require increasing the number of light sources, significantly reducing costs when applied to LED lighting devices. It should be noted that the first direction X is... Figure 1 The X-axis is shown as having positive and negative directions, while the second direction Y is... Figure 1 The positive and negative directions of the Y-axis are shown in the diagram.
[0037] The light source module 120 includes a substrate 123 and a plurality of light source devices (not labeled), which are disposed on the substrate 123 at intervals of X along a first direction. Each light source device includes a base, a light-emitting chip 124, and a light source lens 125. The base has a groove 126, and at least one light-emitting chip 124 is disposed in each groove 126. Each light source lens 125 is sealed on the top of the base and spaced apart from the corresponding light-emitting chip 124, and the light-emitting surface of each light source lens 125 forms a light-emitting surface 121. In other embodiments, the light-emitting chip 124 can be directly disposed on the substrate 123, and the light source lens 125 has a cavity and can be directly disposed on the substrate 123, while sealing the light-emitting chip 124.
[0038] The light-emitting chip 124 can be, but is not limited to, an LED chip, and its quantity can be one or more, depending on actual needs. The base can be a bowl or a reflective cup, and the side of its groove 126 can reflect the large-angle lateral light emitted by the light-emitting chip 124 upwards, which helps to improve brightness.
[0039] Each light source lens 125 has two opposing truncated side surfaces 127, which are arranged along a first direction X. The light-emitting surface of each light source lens 125 is elliptical in orthographic projection onto the substrate 123, and its major axis ends are cut off by the truncated side surfaces 127. By cutting off the major axis ends of the light source lens 125, the volume of the light source lens 125 is reduced, the amount of material used is reduced, and the cost is lowered.
[0040] The optical element 110 is generally rectangular; however, its shape is not limited to this. Correspondingly, each light region 122 is rectangular, with its length direction aligned with the length direction of the optical element 110 and its width direction aligned with the width direction of the optical element 110. The coverage area formed by all the light regions 122 is larger than the other side surface of the optical element 110, meaning each light region 122 can illuminate more surface along its length, which helps to further reduce the number of light source devices in the light source module 120. In other embodiments, each light region is elliptical, with its major axis aligned with the length direction of the optical element and its minor axis aligned with the width direction of the optical element.
[0041] The second line 113 of the light-emitting surface of the first lens section 111 is an arc, that is, the convex light-emitting surface is an arc surface, and the first line 112 passes through the top of the arc surface. The arc surface is divided into two parts by the first line 112, one part diffuses the light towards one side of the first line 112, and the other part diffuses the light towards the other side of the first line 112.
[0042] Furthermore, the second line 113 is an arc, and the convex light-emitting surface is also an arc. In other embodiments, the second line 113 is an elliptical arc, and the convex light-emitting surface is also an elliptical arc.
[0043] The first line 112 of the light-emitting surface of the first lens section 111 is a straight line, that is, the convex light-emitting surface is only convex and curved in the first direction X, and is not curved in the second direction Y. This reduces the light diffusion in the second direction Y. Therefore, the diffused light is basically diffused to both sides of the first direction X, and the light diffused to both sides of the second direction Y is very little or almost non-existent. This allows the diffused light to be fully mixed in the first direction X, thereby improving the uniformity of light emission of the light-emitting surface.
[0044] The orthographic projection of the light-emitting surface of each first lens section 111 onto one side surface of the optical element 110 is a parallelogram, such as a rectangle, square, rhombus, or other parallelogram, making it easy to splice adjacent light-emitting surfaces. In other embodiments, the orthographic projection is elliptical, hexagonal, octagonal, or other shapes.
[0045] Multiple first lens sections 111 are arranged in a rectangular array, with the first direction X being the length direction and the second direction Y being the width direction. The light-emitting surface of each first lens section 111 is projected onto one side surface of the optical element 110 in a rectangular shape, while a row of first lens sections 111 in the width direction is convex. The entire convex strip diffuses light to both sides more effectively and reduces the processing difficulty of the first lens section 111.
[0046] Please see Figures 5 to 7 , Figure 5 A schematic diagram of the optical components of the optical module in this embodiment is shown. Figure 6 It shows Figure 5 An enlarged view of region B of the optical element. Figure 7 The diagram shows a bottom view of the optical elements of the optical module in this embodiment. A plurality of second lens portions 114 are provided on the other side surface of the optical element 110. These second lens portions 114 are arranged in a rectangular array and correspond one-to-one with a plurality of first lens portions 111. Adjacent second lens portions 114 are connected. The light-incident surface of each second lens portion 114 is a concave curved surface, and its orthographic projection on the other side surface of the optical element 110 has a third central axis L3 and a fourth central axis L4. The direction of the third central axis L3 is consistent with the first direction X. The light-incident surface of each first lens portion 111 has intersecting third lines 115 and fourth lines 116. The orthographic projection of the third line 115 coincides with the third central axis L3, and the orthographic projection of the fourth line 116 coincides with the fourth central axis L4. The third line 115 is the bottommost line.
[0047] The third line 115 forms the bottom part of the concave light-incident surface, which can be regarded as a dividing line, dividing the concave light-incident surface into two parts. When the incident light shines on the light-incident surface, the light-incident surface mainly diffuses the light towards both sides of the third line 115, so that the light mainly diverges in the second direction Y, thereby increasing the illumination angle of the emitted light in the second direction Y.
[0048] The third line 115 is a straight line, meaning the concave surface is curved only in the second direction Y, and not in the first direction X. This reduces light diffusion in the first direction X, so when diffused incident light, the light diffuses primarily towards both sides of the second direction Y, with very little or no light diffusing towards both sides of the first direction X. The fourth line 116 is an arc, meaning the concave light-emitting surface is curved, and the third line 115 passes through the bottom of the curved surface. The curved surface is divided into two parts by the third line 115, one part diffusing the incident light to one side, and the other part diffusing the incident light to the other side. In other embodiments, the fourth line 116 can be other curved segments, such as an elliptical arc.
[0049] The orthographic projection of the light-incident surface of each second lens portion 114 onto the other side surface of the optical element 110 is a parallelogram, such as a rectangle, square, rhombus, or other parallelogram, making it easy to join adjacent concave light-incident surfaces. It is understood that in other embodiments, the orthographic projection of each light-incident surface is elliptical, hexagonal, octagonal, or other shape.
[0050] The light-emitting surface of each first lens section 111 is projected onto one side surface of the optical element 110 in a rectangular shape. The light-incident surface of each second lens section 114 is projected onto the other side surface of the optical element 110 in a rectangular shape, and their arrangement direction intersects with the arrangement direction of the light-emitting surface of the corresponding first lens section 111.
[0051] Furthermore, the arrangement direction of the light-incident surface of each second lens section 114 is perpendicular to the arrangement direction of the light-exit surface of the corresponding first lens section 111.
[0052] Please see Figure 8 and Figure 9 , Figure 8 A schematic diagram of the optical elements of an optical module in another embodiment of this application is shown. Figure 9 for Figure 8 An enlarged view of region C of the optical element in this embodiment shows that, compared to the optical element 110 of the optical module 100 in the above embodiment, the light-incident surface of each second lens portion 114 of the optical element 110 of the optical module 100 in this embodiment is provided as a convex curved surface, wherein the third line 115 forms the top part of the convex light-incident surface.
[0053] As for the other aspects of the optical module 100 in this embodiment, they are basically the same as the other aspects of the optical module 100 in the above embodiments. The specific content can be referred to the description of the above embodiments, and will not be repeated here.
[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. An optical module characterized by comprising: include: An optical element (110) has a plurality of first lens portions (111) on one side surface. The plurality of first lens portions (111) are arranged in a rectangular array and have a first direction (X) and a second direction (Y). Adjacent first lens portions (111) are connected. The light-emitting surface of each first lens portion (111) is provided as a convex curved surface. The orthographic projection on one side surface of the optical element (110) has a first central axis (L1) and a second central axis (L2). The direction of the second central axis (L2) is consistent with the first direction (X). The light-emitting surface of each first lens portion (111) has intersecting first lines (112) and second lines (113). The orthographic projection of the first line (112) coincides with the first central axis (L1), and the orthographic projection of the second line (113) coincides with the second central axis (L2). The first line (112) is the topmost line. and The light source module (120) has multiple light-emitting surfaces (121), which are arranged corresponding to the multiple first lens portions (111) and are spaced apart along the first direction (X). Each light-emitting surface (121) is a convex curved surface and is used to project a long strip of light area (122) onto the other side surface of the optical element (110). The length direction of the light area (122) is consistent with the first direction (X).
2. The optical module according to claim 1, wherein The light source module (120) includes a substrate (123) and a plurality of light source devices. The plurality of light source devices are spaced apart on the substrate (123) along the first direction (X). Each light source device includes a base, a light-emitting chip (124) and a light source lens (125). The base is provided with a groove (126). At least one light-emitting chip (124) is provided in each groove (126). Each light source lens (125) is sealed on the top of the base and spaced apart from the corresponding light-emitting chip (124). The light-emitting surface of each light source lens (125) forms a light-emitting surface (121).
3. The optical module according to claim 2, wherein Each of the light source lenses (125) has two opposing cut-off sides (127) arranged along the first direction (X). The light-emitting surface of each of the light source lenses (125) is elliptical in orthographic projection onto the substrate (123), and the two ends of its major axis are cut off by the cut-off sides (127).
4. The optical module according to claim 1, characterized in that, The optical element (110) is cuboid, and each optical region (122) is rectangular. The length direction of each optical region (122) is consistent with the length direction of the optical element (110), and the width direction of each optical region (122) is consistent with the width direction of the optical element (110); or The optical element (110) is cuboid, and each of the light regions (122) is elliptical. The major axis of each light region (122) is aligned with the length of the optical element (110), and the minor axis of each light region (122) is aligned with the width of the optical element (110).
5. The optical module according to claim 1, wherein The second line (113) is an arc.
6. The optical module according to claim 5, wherein The first line (112) is a straight line.
7. The optical module according to claim 6, wherein The light-emitting surface of each of the first lens portions (111) is projected onto one side surface of the optical element (110) in the form of a parallelogram.
8. The optical module according to claim 7, characterized in that, The plurality of first lens portions (111) are arranged in a rectangular array, with the first direction (X) being the length direction and the second direction (Y) being the width direction; The light-emitting surface of each of the first lens portions (111) is rectangular when projected onto one side surface of the optical element (110).
9. The optical module according to any one of claims 1 to 8, characterized in that, The other side surface of the optical element (110) is provided with a plurality of second lens portions (114), the plurality of second lens portions (114) are arranged in a rectangular array and are arranged in a one-to-one correspondence with the plurality of first lens portions (111), and adjacent second lens portions (114) are connected. The light-incident surface of each of the second lens portions (114) is provided as a concave or convex curved surface, and its orthographic projection on the other side surface of the optical element (110) is rectangular, and its arrangement direction intersects with the arrangement direction of the light-outceasing surface of the corresponding first lens portion (111).
10. The optical module according to claim 9, wherein The arrangement direction of the light-incident surface of each second lens section (114) is perpendicular to the arrangement direction of the light-outceasing surface of the corresponding first lens section (111).