Wide-angle optical lens, optical assembly and lamp
By designing a large-angle optical lens in a ceiling lamp, the combination of convex, TIR lens part and composite lens part is used to solve the problem of light efficiency loss in large-angle light distribution, and a more efficient optical system is achieved.
Patent Information
- Application Number
- CN202420562351.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-21
AI Technical Summary
The lighting scheme of existing ceiling lamps realizes large-angle light distribution, and there is a problem of light efficiency loss, mainly because some of the light is absorbed on the light shield.
A large-angle optical lens is designed, and different forms of light distribution are performed by arranging the convex and translucent parts in sequence to reduce light efficiency losses.
By optimizing the direction adjustment of the light, the light is relatively concentrated, reducing the situation of light incident on the light shield, thereby reducing the light efficiency loss and improving the efficiency of the optical system.
Smart Images
Figure CN222703141U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lighting lamps, in particular to a large-angle optical lens, an optical component and a lamp. Background Art
[0002] As a lighting tool, lamps are currently widely used in various fields. Different fields have different requirements for the lighting effects of lamps. Since ceiling lamps have the characteristics of large irradiation area, in the field of industrial lighting, ceiling lamps are mostly used for lighting in higher spaces.
[0003] At present, there are roughly two lighting solutions for ceiling lamps. One is a combination of SMD patch light source, diffuser and sunshade. Among them, the diffuser has a diffusion function. After the light emitted by the light source is diffused by the diffuser, part of the light is incident on the sunshade, and the sunshade partially absorbs the light incident on its surface, resulting in reduced light efficiency; the other is a combination of patch light source, lens and sunshade. Since ceiling lights are used for basic lighting, large-angle light distribution is usually adopted. Therefore, after adding the lens, the light distribution angle is large, but the light distribution is not optimized, and some light is still incident on the surface of the sunshade, and the sunshade absorbs part of the light, resulting in reduced light efficiency.
[0004] Therefore, how to provide a light distribution lens that can reduce light efficiency loss while achieving large-angle light distribution is a problem that people in the prior art need to solve. Utility Model Content
[0005] In order to solve the above problems existing in the prior art, the utility model provides a large-angle optical lens, which performs different forms of light distribution through a convex transparent part, a TIR lens part and a composite lens part, so as to achieve large-angle light distribution while reducing light efficiency loss.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A large-angle optical lens comprises a convex transparent portion, a TIR lens portion and a composite lens portion, wherein the convex transparent portion, the TIR lens portion and the composite lens portion are arranged in sequence from the inside to the outside and are all provided with a light entrance groove for placing a light-emitting unit;
[0008] The convex transparent portion at least includes a convex transparent body, and the convex transparent body protrudes in a direction away from the light incident groove;
[0009] The TIR lens portion includes at least one TIR lens, the TIR lens includes a first reflective surface, the first reflective surface is arranged outside the light entrance groove of the TIR lens, and at one end where the light entrance groove is located, the first reflective surface is inclined toward the light entrance groove of the TIR lens;
[0010] The composite lens portion includes at least one composite lens, and the composite lens includes a light-emitting curved surface on a side close to the TIR lens portion;
[0011] On the side away from the TIR lens portion, the composite lens includes a second reflective surface and a third light emitting surface, wherein the third light emitting surface is connected to the light emitting curved surface; at the end where the light incident groove is located, the second reflective surface is inclined toward the light incident groove of the composite lens.
[0012] Preferably, the convex transparent body further includes a first light incident surface and a first light emitting surface, and the first light incident surface and the first light emitting surface are both curved surfaces, convex in a direction away from the light incident groove.
[0013] Preferably, the TIR lens further comprises a second light incident surface and a second light exiting surface, the light incident groove of the TIR lens is formed by being surrounded by the second light incident surface, and the first reflecting surface is arranged on the outer side of the side wall of the light incident groove of the TIR lens;
[0014] Part of the light passes through the second light incident surface and then directly emerges from the second light emitting surface, and another part of the light passes through the second light incident surface and then passes through the first reflecting surface and then emerges from the second light emitting surface.
[0015] Preferably, the composite lens further includes a third light incident surface;
[0016] Part of the light passes through the third light incident surface and then emerges from the light emitting curved surface; another part of the light passes through the third light incident surface and then is reflected by the second reflecting surface and then emerges from the third light emitting surface.
[0017] Preferably, the third light incident surface is a curved surface, and the third light emitting surface is a flat surface.
[0018] Preferably, the compound lens has a central axis, and the light-emitting curved surface and the second reflecting surface are respectively arranged on both sides of the central axis.
[0019] Preferably, the compound lens has a central axis, and the light-emitting curved surface and the second reflecting surface are respectively arranged on both sides of the central axis.
[0020] Preferably, the convex transparent portion, the TIR lens portion and the composite lens portion are arranged in concentric rings.
[0021] Preferably, the convex transparent body, the TIR lens and the compound lens are all in annular shape.
[0022] In a second aspect, the utility model also provides an optical component, including a light shield, a light source and any of the above-mentioned large-angle optical lenses, the light source includes a plurality of light-emitting units, the light-emitting units are installed in the light entrance groove, and the light shield is connected to the periphery of the large-angle optical lens.
[0023] In a third aspect, the utility model further provides a lamp, comprising any of the above-mentioned large-angle optical lenses, or the above-mentioned optical components.
[0024] Based on the above technical solution, the technical effects achieved by the utility model are:
[0025] The utility model provides a large-angle optical lens, which arranges a convex transparent part, a TIR lens part and a compound lens part in sequence, so as to perform different forms of light distribution on light sources at different positions. After adjusting the direction of the light, the overall light output is more concentrated, the light incident on the sunshade is reduced, the light effect loss is reduced, and the efficiency of the optical system is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a cross-sectional view of a large-angle optical lens and a light shield of the utility model;
[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the convex transparent part of the utility model;
[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the TIR lens portion of the utility model;
[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the composite lens portion of the utility model;
[0030] Figure 5 It is a schematic diagram of the light emitting effect of the convex transparent part of the utility model;
[0031] Figure 6 This is a schematic diagram of the light emitting effect of the TIR lens portion of the utility model;
[0032] Figure 7 It is a schematic diagram of the light emitting effect of the composite lens part of the utility model;
[0033] Figure 8 It is a structural schematic diagram of a large-angle optical lens and a light shield of the utility model.
[0034] Reference numerals:
[0035] 100 wide-angle optical lens, 110 convex transparent portion, 111 convex transparent body, 112 first light incident surface, 113 first light emitting surface, 140 light incident groove;
[0036] 120 TIR lens portion, 121 TIR lens, 122 second light incident surface, 123 second light emitting surface, 124 first reflection surface;
[0037] 130 composite lens portion, 131 composite lens, 132 second reflection surface, 133 third light incident surface, 134 third light emitting surface, 135 light emitting curved surface;
[0038] 200 lens hood;
[0039] 300 light source components, 310 light emitting units;
[0040] 400 optical components. DETAILED DESCRIPTION
[0041] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.
[0042] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.
[0043] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0046] Example 1
[0047] Figure 1 A cross-sectional view of the large-angle optical lens 100 of this embodiment is given. Figure 2 , Figure 3 and Figure 4 The cross-sectional structural schematic diagrams of the convex transparent portion 110, the TIR lens portion 120 and the composite lens portion 130 are respectively given. This embodiment provides a large-angle optical lens 100, which can reduce light efficiency loss while achieving large-angle light distribution.
[0048] Specifically, combined with reference Figures 1 to 4 The wide-angle optical lens 100 includes a convex portion 110, a TIR lens portion 120 and a composite lens portion 130, which are arranged in sequence from the inside to the outside and are all provided with a light entrance groove 140 for placing the light-emitting unit 310; the convex portion 110 includes at least one convex body 111, which protrudes in a direction away from the light entrance groove 140; the TIR lens portion 120 includes at least one TIR lens 121, and the TIR lens 121 includes a first reflective surface 124, which is provided on the outer side of the side wall of the light entrance groove 140, and is located in the light entrance groove. At one end where the light entrance groove 140 is located, the first reflecting surface 124 is inclined toward the light entrance groove 140 of the TIR lens 121; the compound lens portion 130 includes at least one compound lens 131, the compound lens 131 has a central axis, and on the side of the central axis close to the TIR lens 121, the compound lens 131 includes a light emitting curved surface 135; on the side of the central axis far from the TIR lens 121, the compound lens 131 includes a second reflecting surface 132 and a third light emitting surface 134, and the third light emitting surface 134 is connected to the light emitting curved surface 135; at the end where the light entrance groove 140 is located, the second reflecting surface 132 is inclined toward the light entrance groove 140 of the compound lens 131.
[0049] Among them, the convex part 110, the TIR lens part 120 and the compound lens part 130 are arranged in sequence from the inside to the outside, and can be arranged in a ring shape of concentric circles or concentric square rings, or in a strip shape, etc. It is preferred to adopt a concentric ring arrangement so that the light effect obtained by the large-angle optical lens 100 is uniform and symmetrical.
[0050] The convex portion 110 is located at the innermost part of the wide-angle optical lens 100, away from the outermost part of the wide-angle optical lens 100. A sunshade 200 may be installed at the periphery of the wide-angle optical lens 100. The convex portion 110 and the sunshade 200 form a large angle. Therefore, even if the convex portion 110 has a large-angle light output, the light passing through the convex portion 110 can still be irradiated to the sunshade 200 in small amounts or even not at all, thereby reducing the light efficiency loss caused by the sunshade 200 absorbing light. Specifically, Figure 5 A schematic diagram of the light emitting effect of the convex transparent portion 110 of this embodiment is given. Figure 2 and Figure 5 In this embodiment, the convex body 111 includes a first light incident surface 112 and a first light emitting surface 113. The first light incident surface 112 and the first light emitting surface 113 are both curved surfaces, and are convex in the direction away from the light incident groove 140. The light at the light incident groove 140 enters the interior of the convex body 111 from the first light incident surface 112, and then exits through the first light emitting surface 113. Among them, the first light incident surface 112 and the first light emitting surface 113 reduce the focusing control of the light through the convex curved surface, so that the light of the convex part 110 has a large angle when it is emitted. Figure 5 As shown, the convex portion 110 has a large light emission angle, and it is not easy for light to irradiate the light shield 200 outside the large-angle optical lens 100.
[0051] The TIR lens portion 120 is located outside the convex portion 110, and is slightly closer to the outermost portion of the wide-angle optical lens 100, forming a smaller opening angle. Compared with the convex portion 110, if the convex body 111 is directly used, it is easy for more light located on the side to be emitted to the sunshade 200 installed on the periphery of the wide-angle optical lens 100, resulting in light efficiency loss. The TIR lens 121 reflects the light through the first reflection surface 124 located outside the side of the light entrance groove 140, adjusts the light emitted from the side of the light entrance groove 140, and makes the overall emission effect of the light more concentrated than the convex portion 110, reducing the light efficiency loss caused by the light being absorbed by the sunshade 200 when emitted.
[0052] Specifically, Figure 6 A schematic diagram of the light emitting effect of the TIR lens unit 120 is given. Figure 3 and Figure 6In this embodiment, the TIR lens 121 includes a second light incident surface 122 and a second light emitting surface 123. The light incident groove 140 of the TIR lens 121 is formed by surrounding the second light incident surface 122. The second light incident surface 122 includes a first light incident section located at the top of the light incident groove 140 and a second light incident section located on the side wall of the light incident groove 140, and the second light incident section is separately provided and connected to both ends of the first light incident section. The first reflecting surface 124 is provided on the outer side of the side wall of the light incident groove 140 of the TIR lens 121, and at the end where the light incident groove 140 is located, the second reflecting surface 132 is inclined toward the light incident groove 140 of the compound lens 131. The second light emitting surface 123 is provided above the second light incident surface 122. The light enters the TIR lens 121 from the light entrance groove 140 through the second light entrance surface 122. Part of the light passes through the second light entrance surface 122 and is directly emitted from the second light exit surface 123. Another part of the light, such as the light from the side of the light entrance groove 140, passes through the second light entrance surface 122 and is reflected by the first reflection surface 124 and then is emitted from the second light exit surface 123.
[0053] In this process, the first reflective surface 124 regulates the path of the lateral light, changes the direction of the light, and makes the light collectively emerge from the second light emitting surface 123, so that the light emission effect is concentrated, and the light efficiency loss caused by the light in the lateral direction emerging onto the light shield 200 is reduced. In this embodiment, the second light emitting surface 123 is a plane, and in some embodiments, the structure of the second light emitting surface 123 can be adjusted according to needs.
[0054] The compound lens 131 is located outside the TIR lens unit 120. The distance between the compound lens unit 130 as a whole and the outermost part of the wide-angle optical lens 100 is the shortest, and the opening angle formed is the smallest. Therefore, more light rays are easily emitted directly onto the light shield 200 outside the wide-angle optical lens 100, resulting in a large loss of light efficiency. The side of the compound lens unit 130 close to the inside is far away from the outer periphery of the wide-angle optical lens 100 on that side, and the opening angle formed is large. Therefore, the compound lens 131 is provided with a light emitting curved surface 135 on the side close to the inside, that is, the side close to the TIR lens 121. The light rays are collimated after passing through the light emitting curve, so that the light rays have a large light emitting angle on the inside; the side of the compound lens 131 close to the outside is far away from the outermost part of the wide-angle optical lens 100 on that side, and the opening angle formed is the smallest, which is easy to produce large optical losses. Therefore, the TIR lens 121 is provided with a second reflective surface 132 on the outer side. The second reflective surface 132 reflects the light incident from the side of the light incident groove 140 so that the light is concentrated inward after being emitted, thereby reducing light efficiency loss.
[0055] Specifically, Figure 7 A schematic diagram of the light emitting effect of the composite lens 131 of this embodiment is given. Figure 4 and Figure 7, the combined lens 131 includes a third light incident surface 133 and a third light emitting surface 134. In the present embodiment, the third light incident surface 133 is a curved surface, which surrounds and forms a light incident groove 140. The compound lens 131 is provided with a light emitting curved surface 135 on the side close to the TIR lens portion 120, that is, close to the inner side of the wide-angle optical lens 100. Similar to the convex body 111, the light emitting curved surface 135 provides wide-angle light distribution. Since the distance between the light emitting curved surface 135 and the periphery of the wide-angle optical lens 100 on this side is large, it is not easy for light to be irradiated onto the light shield 200 on this side. The compound lens 131 is provided with a second reflecting surface 132 on the side away from the TIR lens portion 120, that is, close to the outer side of the wide-angle optical lens 100. The second reflecting surface 132 is similar to the first reflecting surface 124, and at the end where the light incident groove 140 is located, the second reflecting surface 132 is inclined toward the light incident groove 140 of the compound lens 131. The second reflective surface 132 regulates the path of the light irradiated toward the side, reflects the light and makes it emerge from the third light emitting surface 134. Therefore, the light near the inner side of the composite lens 131 directly emerges from the light emitting curved surface 135 after passing through the third light incident surface 133, forming a large-angle light distribution, and the light near the outer side is reflected by the second reflective surface 132 after passing through the third light incident surface 133, and emerges from the third light emitting surface 134 or the light emitting curved surface 135, so that the light is avoided from irradiating the sunshade 200 as much as possible, and the light efficiency loss caused by the side light irradiating the sunshade 200 is reduced.
[0056] Preferably, in this embodiment, the composite lens 131 is provided with a central axis, and the light emitting curved surface 135 and the second reflecting surface 132 are respectively provided on both sides of the central axis. Of course, in some embodiments, the proportion of the light emitting curved surface 135 and the second reflecting surface 132 or the curvature of the curve, the inclination angle of the second reflecting surface 132, etc. can also be adjusted according to the requirements of the light emitting effect. In addition, in this embodiment, the third light incident surface 133 is a curved surface, and the third light emitting surface 134 is a plane. In other embodiments, the structures of the third light incident surface 133 and the third light emitting surface 134 can also be adjusted according to the requirements of the light emitting effect.
[0057] It is further explained that Figure 8 A schematic diagram of the structure of the wide-angle optical lens 100 and the light shield 200 of this embodiment is given. Figure 1 and Figure 8, the convex body 111, the TIR lens 121, and the compound lens 131 can be independent lenses corresponding to the light-emitting units one by one, or can be used for an annular structure that cooperates with multiple independent light-emitting units or annular light sources. In this embodiment, the lens body, the TIR lens 121, and the compound lens 131 are all annular structures, and form concentric rings from the inside to the outside, which are the convex part 110, the TIR lens part 120, and the compound lens part 130. In addition, in some embodiments, the convex part 110, the TIR lens part 120, and the compound lens part 130 can also be provided with multiple annular convex bodies 111, TIR lenses 121, and compound lenses 131, respectively, and no detailed restrictions are made on the number of lens rings in the convex part 110, the TIR lens part 120, and the compound lens part 130.
[0058] In summary, the wide-angle optical lens 100 provided in this embodiment distributes light sources at different positions from the inside to the outside in sequence through the convex transparent portion 110, the TIR lens portion 120 and the composite lens portion 130, and in particular, by adjusting the optical path of the side light, the wide-angle optical lens 100 can effectively reduce the possibility of the side-emitting light irradiating the side light shield 200 while achieving wide-angle light distribution, thereby avoiding the surface of the light shield 200 from absorbing the light and reducing the light efficiency loss. The wide-angle optical lens 100 effectively improves the efficiency of the optical system.
[0059] Example 2
[0060] This embodiment provides an optical component 400, combined with reference Figure 1 and Figure 8 The optical assembly 400 includes a light shield 200, a light source 300 and a large-angle optical lens 100. The large-angle optical lens 100 in this embodiment is the same as the large-angle optical lens 100 in Embodiment 1. Please refer to Embodiment 1 for the similarities.
[0061] The light source part 300 includes a plurality of light emitting units 310, and the light emitting units 310 are installed in the light entrance groove 140. The light source part 300 can be an independent light emitting unit 310, or an integration of a plurality of light emitting units 310. In the present embodiment, the light emitting unit 310 is an integration of a plurality of light emitting units 310, and the light emitting units 310 are arranged in the shape of concentric rings and are adapted to the shape of the light entrance groove 140 in the convex transparent part 110, the TIR lens part 120, and the composite lens part 130.
[0062] The light shield 200 is installed on the periphery of the wide-angle optical lens 100 .
[0063] Example 3
[0064] This embodiment provides a lamp, which includes a large-angle optical lens 100 or an optical assembly 400. The large-angle optical lens 100 may be the same as the large-angle optical lens 100 provided in Embodiment 1, or may be an improved large-angle optical lens 100 based on Embodiment 1.
[0065] The above contents are merely examples and illustrations of the structure of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these obvious replacement forms all belong to the protection scope of the utility model.
Claims
1. A large-angle optical lens, characterized in that: It includes a convex transparent part, a TIR lens part and a compound lens part, wherein the convex transparent part, the TIR lens part and the compound lens part are arranged in sequence from the inside to the outside, and are all provided with a light entrance groove for placing a light-emitting unit; The convex transparent portion at least includes a convex transparent body, and the convex transparent body protrudes in a direction away from the light incident groove; The TIR lens portion includes at least one TIR lens, the TIR lens includes a first reflective surface, the first reflective surface is arranged outside the light entrance groove of the TIR lens, and at one end where the light entrance groove is located, the first reflective surface is inclined toward the light entrance groove of the TIR lens; The composite lens portion includes at least one composite lens, and the composite lens includes a light-emitting curved surface on a side close to the TIR lens portion; On the side away from the TIR lens portion, the composite lens includes a second reflective surface and a third light emitting surface, wherein the third light emitting surface is connected to the light emitting curved surface; at the end where the light incident groove is located, the second reflective surface is inclined toward the light incident groove of the composite lens.
2. The wide-angle optical lens according to claim 1, characterized in that: The convex body further includes a first light incident surface and a first light emitting surface. Both the first light incident surface and the first light emitting surface are curved surfaces that bulge in a direction away from the light incident groove.
3. The wide-angle optical lens according to claim 1, characterized in that: The TIR lens further includes a second light incident surface and a second light exit surface, the light incident groove of the TIR lens is formed by being surrounded by the second light incident surface, and the first reflecting surface is arranged outside the side wall of the light incident groove of the TIR lens; Part of the light passes through the second light incident surface and then directly emerges from the second light emitting surface, and another part of the light passes through the second light incident surface and then passes through the first reflecting surface and then emerges from the second light emitting surface.
4. The wide-angle optical lens according to claim 1, characterized in that: The composite lens also includes a third light incident surface; part of the light passes through the third light incident surface and then emerges from the light exiting curved surface; another part of the light passes through the third light incident surface, is reflected by the second reflecting surface, and then emerges from the third light exiting surface.
5. The wide-angle optical lens according to claim 4, characterized in that: The third light incident surface is a curved surface, and the third light emitting surface is a flat surface.
6. The wide-angle optical lens according to claim 1, characterized in that: The composite lens has a central axis, and the light-emitting curved surface and the second reflecting surface are respectively arranged on two sides of the central axis.
7. The wide-angle optical lens according to claim 1, characterized in that: The convex transparent portion, the TIR lens portion, and the composite lens portion are arranged in concentric circles.
8. The wide-angle optical lens according to claim 7, characterized in that: The convex transparent body, the TIR lens and the compound lens are all in annular shape.
9. An optical component, characterized in that It comprises a shading cover, a light source and a wide-angle optical lens as described in any one of claims 1 to 8, wherein the light source comprises a plurality of light-emitting units, the light-emitting units are installed in the light-entering grooves, and the shading cover is connected to the periphery of the wide-angle optical lens.
10. A lamp, characterized in that: It comprises the wide-angle optical lens described in any one of claims 1 to 8, or the optical component described in claim 9.