Optical lens, optical assembly and lighting device

Abstract

The utility model belongs to lighting equipment technical field discloses an optical lens, optical assembly and lighting equipment, this optical lens includes lens body, homogenizer and lens group. The lens body is the structure of gyre, including first end surface and second end surface, the diameter of second end surface is greater than the diameter of first end surface, and first end surface and second end surface are connected through total internal reflection surface, and total internal reflection surface is the cambered surface that protrudes to the axis of gyre away from lens body, first end surface is set up light inlet groove, and light inlet groove is used for placing light source, second end surface sets up mounting groove, and mounting groove is coaxial with light inlet groove and is not communicated, and homogenizer is set up in mounting groove, and lens group is connected in the circumferential side of the slot mouth of mounting groove. The optical lens can mix color while realizing small angle illumination, and the chroma space uniformity is high, and the illumination comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and in particular to an optical lens, optical component and lighting equipment. Background Technology

[0002] TIR lenses, short for Total Internal Reflection lenses, are optical elements designed using the principle of total internal reflection. They are mainly used for the efficient collection and directional transmission of light and are widely used in the collimation and focusing operations of LED light sources.

[0003] Existing lighting fixtures typically consist of LED light sources and TIR lenses. They achieve color mixing through frosted or beaded surfaces on the light-emitting surface. However, due to the optical imaging characteristics of convex lenses, color separation occurs in the central area of ​​the lens when maintaining a small light-emitting angle, making uniform light mixing impossible. Even with frosted or beaded surfaces on the light-emitting port, when the angle is large to address the color mixing issue, not only does it affect luminous efficiency, but it also causes severe separation between the beam formed by the convex lens and the beam formed by the total internal reflection surface, impacting the uniformity of the emitted light.

[0004] Therefore, there is an urgent need for an optical lens, optical components, and lighting equipment to solve the above problems. Utility Model Content

[0005] According to one aspect of the present invention, an optical lens is provided that can achieve small-angle illumination while also mixing colors to achieve high color space uniformity and improve lighting comfort.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Optical lenses, including:

[0008] The lens body is a rotating structure, including a first end face and a second end face arranged opposite to each other. The diameter of the second end face is larger than the diameter of the first end face. The first end face and the second end face are connected by a total internal reflection surface. The total internal reflection surface is an arc surface that protrudes away from the rotation axis of the lens body. The first end face has a light entrance groove for placing a light source.

[0009] A light-diffusing component has a mounting groove on its second end face. The mounting groove is coaxially arranged with the light-incident groove but not connected. The light-diffusing component is disposed in the mounting groove.

[0010] The lens assembly is disposed in the slot of the mounting groove.

[0011] Optionally, the bottom of the light inlet groove protrudes towards the first end face to form a first convex transparent surface, the sidewall of the light inlet groove is a rotary curved surface, and the diameter of the bottom of the light inlet groove is smaller than the diameter of the opening of the light inlet groove.

[0012] Optionally, the inner wall of the mounting groove is provided with a mounting boss, and the periphery of the lens assembly abuts against the mounting boss.

[0013] Optionally, the bottom of the mounting groove is provided with a slot, and the light-diffusing element is inserted into the slot.

[0014] Optionally, the light-diffusing element is cylindrical or polygonal.

[0015] Optionally, the second end face is a beaded surface or a frosted surface; and / or,

[0016] The light-emitting surface of the lens group has a matte texture.

[0017] According to another aspect of the present invention, an optical component is provided, including a light source component and an optical lens as described in any of the above claims. The light source component includes an electrically connected substrate and an LED light source. A first end face of the lens body abuts against the substrate. The LED light source is located within the light entrance groove, and the center of the LED light source coincides with the rotation axis of the lens body.

[0018] Optionally, the LED light source includes multiple LED chips, and the multiple LED chips are chips of different colors.

[0019] Optionally, the substrate has multiple insertion holes, which are spaced apart around the LED light source. The first end face of the optical lens has multiple protrusions, which correspond one-to-one with the multiple insertion holes and are inserted into each other.

[0020] According to another aspect of the present invention, a lighting device is provided, comprising a plurality of optical components as described in any of the preceding claims, wherein the plurality of optical components are spaced apart and the LED light sources of adjacent two optical components are arranged at an angle.

[0021] The beneficial effects of this utility model are:

[0022] In the optical lens provided by this invention, the light source is placed within the entrance groove of the lens body. The light emitted by the light source is divided into two parts. One part is refracted by the curved surface of rotation on the side wall of the entrance groove and enters the lens body. After being reflected by the total internal reflection surface, it exits from the second end face. The other part is refracted by the first convex surface at the bottom of the entrance groove and enters the light homogenizer. After being homogenized by the light homogenizer, it is focused and exits from the lens group. In other words, the light from the light source has two exit paths. While achieving small-angle illumination, the light spots in the central light path and the peripheral light paths can transition evenly, improving the uniformity of illuminance. At the same time, the light from different colored light sources can overlap with each other on the total internal reflection surface, thereby achieving color mixing, resulting in high color space uniformity and improving lighting comfort. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the optical component provided in an embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of the optical component provided in an embodiment of the present invention;

[0026] Figure 3 This is an exploded view of the optical component provided in this embodiment of the present invention from a first-view perspective;

[0027] Figure 4 This is an exploded view of the optical component provided in this embodiment of the present invention from a second perspective;

[0028] Figure 5 This is a schematic diagram of an arrangement of lighting equipment provided in an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of another arrangement of the lighting equipment provided in this embodiment of the present utility model.

[0030] In the picture:

[0031] 1. Lens body; 11. First end face; 111. Light entrance groove; 112. First convex lens surface; 113. Protrusion; 12. Second end face; 121. Mounting groove; 122. Mounting boss; 123. Slot; 13. Total internal reflection surface;

[0032] 2. Light-diffusing components;

[0033] 3. Lens group;

[0034] 100. Light source assembly; 101. Substrate; 1011. Socket; 102. LED light source; 1021. LED chip. Detailed Implementation

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] This embodiment provides an optical lens that can be used in LED lighting fixtures (such as wall washer lights, spotlights, or downlights) to achieve small-angle illumination and multi-color light mixing.

[0045] like Figure 1 and Figure 2 As shown, the optical lens includes a lens body 1, a light-diffusing element 2, and a lens group 3. The lens body 1 is a rotating structure, including a first end face 11 and a second end face 12 disposed opposite to each other, the diameter of the second end face 12 being larger than the diameter of the first end face 11. The first end face 11 and the second end face 12 are connected by a total internal reflection surface 13, which is an arcuate surface convex away from the rotation axis of the lens body 1. (Refer to...) Figure 1 The lens body 1 is specifically in the shape of a bowl or cup, and its second end face 12 at the top is the light-emitting surface.

[0046] Continuing, a light entrance groove 111 is formed on the first end face 11. The light entrance groove 111 is used to place the light source. The bottom of the light entrance groove 111 protrudes towards the first end face 11 to form a first convex surface 112. The sidewall of the light entrance groove 111 is a curved surface of revolution, and the diameter of the bottom of the light entrance groove 111 is smaller than the diameter of the opening of the light entrance groove 111. A mounting groove 121 is formed on the second end face 12. The mounting groove 121 is coaxially arranged with the light entrance groove 111 but not connected. The light-diffusing element 2 is disposed in the mounting groove 121. The lens group 3 is connected to the periphery of the opening of the mounting groove 121. Preferably, the lens group 3 is a convex lens structure to facilitate the focusing of light.

[0047] In other words, in this embodiment, the light emitted by the light source is divided into two parts. One part is refracted by the curved surface of the side wall of the light inlet groove 111 and enters the lens body 1. After being reflected by the total internal reflection surface 13, it is emitted from the second end face 12. The other part is refracted by the first convex transparent surface 112 at the bottom of the light inlet groove 111 and enters the light homogenizer 2. After being homogenized by the light homogenizer 2, it is focused and emitted from the lens group 3.

[0048] Understandably, the light source has two outgoing paths, achieving small-angle illumination while ensuring a smooth transition between the light spots in the central and peripheral paths, thus improving the uniformity of illuminance. Simultaneously, the light from different colored light sources can overlap on the total internal reflection surface 13, enabling color mixing and resulting in high color space uniformity, thereby enhancing lighting comfort.

[0049] Specifically, continue to refer to Figure 2 The inner wall of the mounting groove 121 is provided with a mounting boss 122, and the periphery of the lens assembly 3 abuts against the mounting boss 122. In this embodiment, the mounting boss 122 is arranged along the entire circumference of the mounting groove 121, and the periphery of the lens assembly 3 abuts against the mounting boss 122 and is fixed by applying glue, thereby effectively improving the stability of the lens assembly 3 installation and sealing the groove of the mounting groove 121 to a certain extent.

[0050] More specifically, the bottom of the mounting groove 121 is provided with a slot 123, into which the light-diffusing element 2 is inserted. The slot 123 allows the light-diffusing element 2 to be accurately positioned with the lens body 1 and quickly installed in the mounting groove 121, increasing the ease of assembling the optical lens.

[0051] Optionally, the light-diffusing element 2 is cylindrical or polygonal. For example... Figure 2 and Figure 3 As shown, the light-diffusing element 2 in this embodiment is rectangular (i.e., quadrilateral prism). The shape of the light-diffusing element 2 can be determined according to design requirements and is not limited here.

[0052] In this embodiment, the light homogenizer 2 can be selected as an optical integrating rod in the prior art. The working principle of an optical integrating rod is to achieve uniform illumination through multiple reflections of light within the rod. When light enters from one end of the integrating rod, multiple total internal reflections occur within the rod, and each reflection forms a virtual light source. These virtual light sources are superimposed on the exit end face of the optical integrating rod, resulting in better uniformity of the emitted light.

[0053] Alternatively, such as Figure 1 , Figure 3 and Figure 4 As shown, to make the emitted light from the optical lens softer and improve the distribution and uniformity of the light, thereby enhancing the illumination effect, in this embodiment, the second end face 12 is a beaded or frosted surface, preferably a beaded surface. Simultaneously, a matte texture is created on the light-emitting surface of the lens group 3. It should be noted that the manufacturing process of the above structure is prior art and will not be elaborated here.

[0054] Continue to refer to Figures 1-4 This embodiment also provides an optical component, which includes a light source component 100 and an optical lens provided in this embodiment. The light source component 100 includes an electrically connected substrate 101 and an LED light source 102. Exemplarily, the substrate 101 is a PCB board, and the material can be aluminum or copper. The first end face 11 of the lens body 1 abuts against the substrate 101, and the LED light source 102 is located in the light entrance groove 111, with the center of the LED light source 102 coinciding with the rotation axis of the lens body 1. The light emitted by the LED light source 102 can pass through the optical lens to achieve small-angle illumination and multi-color light mixing.

[0055] Specifically, the LED light source 102 includes multiple LED chips 1021, each chip displaying a different color of light. In this embodiment, the LED light source 102 is an RGBW light source, comprising four LED chips 1021 arranged in a crisscross pattern. An RGBW light source is a four-in-one light source, composed of red, green, and blue primary colors and white light, combining color mixing and white light illumination functions, and is widely used in smart lighting, home ambiance creation, and other fields.

[0056] More specifically, a plurality of insertion holes 1011 are formed on the substrate 101, and the plurality of insertion holes 1011 are spaced apart on the periphery of the LED light source 102. A plurality of protrusions 113 are formed on the first end face 11, and the plurality of protrusions 113 correspond one-to-one with the plurality of insertion holes 1011 and are inserted into each other. This arrangement can improve the connection reliability between the optical lens and the substrate 101, thereby improving the structural stability of the optical component.

[0057] like Figure 5 and Figure 6 As shown, this embodiment also provides a lighting device, which includes a plurality of optical components provided in this embodiment. The plurality of optical components are spaced apart, and the LED light sources 102 of adjacent optical components are arranged at an angle.

[0058] In this embodiment, the optical component is specifically a wall washer light, and multiple optical components are arranged at intervals along the horizontal direction. In one arrangement, the diagonal of the LED light source 102 of the optical component is set at a 45° angle to the horizontal direction, and adjacent optical components are arranged in a staggered 180° rotation, as detailed below. Figure 5 In another arrangement, the diagonal of the LED light source 102 of the optical component is perpendicular to the horizontal direction, and adjacent optical components are also arranged in a staggered 180° rotation. See [reference needed] for details. Figure 6 .

[0059] Of course, in other embodiments, the optical components in the lighting device may also be arranged in other forms, such as rectangular arrays or circular arrays, which can be set according to actual needs and are not limited here.

[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An optical lens, characterized in that, include: The lens body (1) is a rotating body structure, including a first end face (11) and a second end face (12) arranged opposite to each other. The diameter of the second end face (12) is larger than the diameter of the first end face (11). The first end face (11) and the second end face (12) are connected by a total internal reflection surface (13). The total internal reflection surface (13) is an arc surface that protrudes away from the rotation axis of the lens body (1). The first end face (11) has an entrance light groove (111) for placing a light source. The light-diffusing component (2) has a mounting groove (121) on its second end face (12). The mounting groove (121) is coaxially arranged with the light-incident groove (111) but not connected. The light-diffusing component (2) is disposed in the mounting groove (121). The lens assembly (3) is disposed in the slot of the mounting groove (121).

2. The optical lens according to claim 1, characterized in that, The bottom of the light inlet groove (111) protrudes towards the first end face (11) to form a first convex surface (112). The side wall of the light inlet groove (111) is a rotary curved surface. The diameter of the bottom of the light inlet groove (111) is smaller than the diameter of the opening of the light inlet groove (111).

3. The optical lens according to claim 1, characterized in that, The inner wall of the groove of the mounting slot (121) is provided with a mounting boss (122), and the periphery of the lens group (3) abuts against the mounting boss (122).

4. The optical lens according to claim 1, characterized in that, The bottom of the mounting groove (121) is provided with a slot (123), and the light-diffusing component (2) is inserted into the slot (123).

5. The optical lens according to claim 1, characterized in that, The light-diffusing element (2) is cylindrical or polygonal.

6. The optical lens according to any one of claims 1-5, characterized in that, The second end face (12) is a beaded or frosted surface; and / or, The light-emitting surface of the lens group (3) has a matte texture.

7. An optical component, characterized in that, The device includes a light source assembly (100) and an optical lens as described in any one of claims 1-6. The light source assembly (100) includes an electrically connected substrate (101) and an LED light source (102). The first end face (11) of the lens body (1) abuts against the substrate (101). The LED light source (102) is located in the light entrance groove (111), and the center of the LED light source (102) coincides with the rotation axis of the lens body (1).

8. The optical component according to claim 7, characterized in that, The LED light source (102) includes multiple LED chips (1021), and the multiple LED chips (1021) are chips of different colors.

9. The optical component according to claim 7, characterized in that, The substrate (101) has a plurality of holes (1011) arranged at intervals around the LED light source (102). The first end face (11) of the optical lens has a plurality of protrusions (113) arranged thereon, and the plurality of protrusions (113) correspond one-to-one with the plurality of holes (1011) and are inserted into each other.

10. A lighting device, characterized in that, It includes a plurality of optical components as described in any one of claims 7-9, the plurality of optical components being spaced apart, and the LED light sources (102) of two adjacent optical components being arranged at an angle rotation.

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