Lenses and reflectors

Abstract

This utility model belongs to the field of lighting technology and discloses a lens and a reflector. The lens includes a functional part and an overlapping part. The overlapping part is annular and protrudes from the peripheral edge of the functional part. At least one side of the functional part is convex. A transmission groove is formed on the lower side of the functional part. The maximum diameter of the functional part is defined as D, and the bottom diameter of the transmission groove is defined as d, where 0.6≤d / D≤1. By controlling the ratio of the small diameter to the large diameter of the functional part within a large range, the lens of this solution has a larger aperture diameter for the same large diameter, thus adapting to different types of light sources and improving the overall luminous efficiency of the lamp. At the same time, it can increase the radial distance from the light source, avoiding the lens from melting and deforming due to high temperature. Similarly, since the lens aperture of this application is larger for the same large diameter, the light control capability is improved, thereby optimizing the visual effect of the light and improving the light mixing capability.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a lens and a reflector. Background Technology

[0002] In existing technologies, such as Figure 1 As shown, the reflector includes a connected anti-glare shield 1 and a lens 2. The anti-glare shield 1 is generally mounted on a wall. The side of the lens 2 facing away from the anti-glare shield 1 is the light source 3. A cup-shaped groove 22 is formed at the bottom of the lens 2, and a lens body 21 with two protruding sides is formed in the middle. Due to the opening of the cup-shaped groove 22, the overall height of the lens 2 is relatively large. If the radial dimension of the lens 2 is to be increased, it will result in a very large overall lens 2, increasing the cost. Since the bottom of the lens body 21 is the bottom dimension of the cup-shaped groove 22, the bottom dimension of the lens body 2 is relatively small, which leads to... This leads to a series of problems. Due to the small lower opening, only COB light sources can be used. Since COB light sources themselves have relatively low luminous efficacy, and the anti-glare shield 1 is relatively tall, if the anti-glare shield 1 is black, it will absorb a lot of light, resulting in low overall efficiency and thus low overall light efficacy. If the anti-glare shield 1 is white, too much stray light hitting it will cause excessive glare. Because the lens 2 opening is small, for a light source 3 of the same size, the lens 2 is closer to the light source 3 (i.e., the heat source) radially, making the lens 2 prone to deformation from heat. (See [link to relevant documentation]). Figure 1 The closest point is shown in the figure; because lens 2 is relatively small, its light control ability is relatively poor, which can easily cause local areas to be too bright, making it impossible to see lens 2 with the naked eye and resulting in poor visual effect; at the same time, because the opening of lens 2 is small, the optical path is short, resulting in poor effective light control ability and poor light mixing ability.

[0003] Therefore, there is an urgent need to design a lens and a reflector to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a lens with a larger aperture to improve overall lighting efficiency, reduce glare, prevent the lens from being damaged by heat, enhance visual effects, and improve light mixing capabilities.

[0005] Another objective of this invention is to provide a reflector that improves overall lighting efficiency, reduces glare, prevents lenses from being damaged by heat, enhances visual effects, and strengthens light mixing capabilities.

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

[0007] The lens includes a functional part and an overlapping part. The overlapping part is annular and protrudes from the peripheral edge of the functional part. A transmission groove is formed on the lower side of the functional part. The maximum diameter of the functional part is defined as D, and the bottom diameter of the transmission groove is defined as d, where 0.6≤d / D≤1.

[0008] As an alternative, the portion of the functional part located below the overlapping portion is defined as the first functional part. The peripheral sidewall of the first functional part is inclined from the position connected to the overlapping portion to its free end toward the centerline of the lens, and the peripheral sidewall of the first functional part is a reflective surface.

[0009] As an optional solution, a light mixing structure is provided on the bottom of the aforementioned transmission groove and / or on the aforementioned reflective surface.

[0010] As an alternative, the upper side of the aforementioned functional unit is arranged in a stepped manner, with the bottom step being circular and each of the remaining steps being annular and concentrically arranged with the aforementioned lens.

[0011] As an alternative, each of the remaining steps is designed to gradually bulge from the outside in.

[0012] As an alternative, the wall of the aforementioned transmission groove is inclined from the bottom of the groove to its free end in a direction away from the central axis of the lens.

[0013] The reflector includes:

[0014] The aforementioned lens;

[0015] The reflector cup has the aforementioned overlapping portion attached to the top of the reflector cup.

[0016] As an optional solution, the inner wall of the aforementioned reflector cup is provided with a first light-mixing structure; and / or

[0017] The bottom of the aforementioned transmission groove is provided with a second light mixing structure.

[0018] As an alternative, the aforementioned first light-mixing structure can be scales or multiple micro-arc-shaped surfaces;

[0019] The aforementioned second light-mixing structure is scales or multiple micro-arc-shaped surfaces.

[0020] As an optional solution, an anti-glare shield is also included, which is fastened to the side of the lens away from the reflector cup and can limit the lens in the axial direction so that the lens is pressed against the reflector cup.

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

[0022] This utility model provides a lens that, by controlling the ratio of the small diameter to the large diameter of the functional part within a large range, results in a larger aperture diameter for the same large diameter, thereby adapting to different types of light sources and improving the overall luminous efficiency of the lamp. At the same time, it can increase the radial distance from the light source to prevent the lens from being deformed by heat. Similarly, since the lens aperture of this embodiment is larger for the same large diameter, the light control capability is improved, thereby optimizing the visual effect of the light and improving the light mixing capability.

[0023] This utility model also provides a reflector that manufactures the lens and reflector cup separately, allowing the lens to have a larger diameter opening, thereby improving the overall light efficiency, reducing glare, preventing the lens from being damaged by heat, improving visual effect, and enhancing light mixing ability. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of a lens provided by existing technology;

[0025] Figure 2 This is a cross-sectional view of the lens provided in an embodiment of this utility model;

[0026] Figure 3 This is a perspective sectional view of the reflector provided in an embodiment of the present invention;

[0027] Figure 4 This is a cross-sectional view of the reflector provided in an embodiment of the present invention. Figure 1 ;

[0028] Figure 5 This is a cross-sectional view of the reflector provided in an embodiment of the present invention. Figure 2 ;

[0029] Figure 6 This is a cross-sectional view of the reflector provided in an embodiment of the present invention. Figure 3 .

[0030] In the picture:

[0031] 1. Anti-glare shield; 2. Lens; 21. Lens body; 22. Cup-shaped groove; 3. Light source; 4. Closest point;

[0032] 100. Lens; 10. Functional part; 11. First functional part; 111. Transmission groove; 112. Light mixing structure; 12. Second light mixing structure; 20. Overlapping part; 30. Step;

[0033] 200, Reflector; 210, First light mixing structure; 220, Card holder; 221, Socket; 300, Anti-glare cover; 310, Hook. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] 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.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] This embodiment provides a lens 100 that can improve the overall lighting effect, reduce glare, prevent the lens 100 from being damaged by heat, improve visual effect, and enhance light mixing capability. Figure 2 and Figure 3 As shown, the lens 100 includes a functional part 10 and an overlapping part 20. The overlapping part 20 is annular and protrudes from the peripheral edge of the functional part 10. A transmission groove 111 is formed on the lower side of the functional part 10. The maximum diameter of the functional part 10 is defined as D, and the bottom diameter of the transmission groove 111 is defined as d, where 0.6≤d / D≤1.

[0039] The lens 100 described above controls the ratio of the small diameter to the large diameter of the functional part 10 within a large range, so that the aperture diameter of the lens 100 in this solution is larger for the same large diameter, thereby adapting to different types of light sources 3 and improving the overall light efficiency of the lamp. At the same time, it can increase the distance from the light source 3 in the radial direction to prevent the lens 100 from being deformed by heat. Similarly, since the aperture of the lens 100 in this embodiment is larger for the same large diameter, the light control capability is improved, thereby optimizing the visual effect of the light and improving the light mixing capability.

[0040] It is understandable that, such as Figure 1 As shown, in the prior art, the ratio of d' to D' is generally less than 0.5, resulting in low utilization of the opening in the radial direction.

[0041] Preferably, in this embodiment, d / D = 0.9. In other embodiments, the ratio can also be 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.95, 1, etc., and is not limited here.

[0042] In this embodiment, at least one side of the functional part 10 is protruding; in other embodiments, at least one side of the functional part 10 is recessed. This is not a limitation.

[0043] In addition, such as Figure 2 As shown, the height from the top of the overlapping part 20 to the lowest point of the side wall of the transmission groove 111 is defined as H, and 0.02≤H / D≤0.4. By controlling this ratio within this range, the lens 100 presents a relatively flat shape, making the lens 100 easier to process and saving costs.

[0044] It should be noted that, as Figure 3 As shown, the lens 100 is a reflector used in conjunction with the reflector cup 200, with the overlapping part 20 overlapping the top of the reflector cup 200. That is, the lens 100 and the reflector cup 200 are manufactured separately. The light source 3 is located below the reflector cup 200, which effectively focuses the light. The light hitting the reflector cup 200 is reflected and then passes through the lens 100. This reflector, by manufacturing the lens 100 and the reflector cup 200 separately, allows the lens 100 to have a larger diameter opening, thereby improving the overall lighting efficiency, reducing glare, preventing the lens 100 from being damaged by heat, improving visual effects, and enhancing light mixing capabilities.

[0045] like Figure 3 As shown, the reflector also includes an anti-glare shield 300, which is fastened to the side of the lens 100 facing away from the reflector cup 200, and can limit the lens 100 in the axial direction so that the lens 100 abuts against the reflector cup 200. Optionally, as Figure 3As shown, the anti-glare shield 300 and the reflector cup 200 are engaged by a snap-fit ​​connection. Specifically, the anti-glare shield 300 has two hooks 310 on its periphery, and the reflector cup 200 has two slots 220 on its periphery. Each slot 220 has an insertion hole 221, which is roughly L-shaped. After the hook 310 is inserted into the insertion hole 221, it first retracts and deforms. As the hook 310 continues to be inserted into the insertion hole 221, the free end of the hook 310 returns to its original position and is confined within the insertion hole 221 to complete the snap-fit. At the same time, the overlapping part 20 is clamped between the anti-glare shield 300 and the reflector cup 200 and is thus fixed. The lens 100 itself does not have any other connection, making installation more convenient.

[0046] Optionally, such as Figure 2 As shown, the portion of functional part 10 located below the overlapping portion 20 is defined as the first functional part 11. The peripheral sidewall of the first functional part 11 is inclined from its connection with the overlapping portion 20 to its free end toward the centerline near the lens 100, and the peripheral sidewall of the first functional part 11 is a reflective surface. See also... Figure 4 With the reflective surface set, ray c is reflected in the direction of the arrow, so that ray c does not deviate from a large angle. Basically, the angle between ray c and ray a, ray b and ray d is small. That is, if the reflective surface is not set, ray c will eventually hit the inner wall of the anti-glare shield 300, which will cause the light spots to gather when viewed from the outside, affecting the visual effect.

[0047] Furthermore, such as Figure 2 As shown, the angle between the generatrix of the peripheral sidewall of the first functional unit 11 and the central axis of the lens 100 is α, where 25°≤α≤40°. In this embodiment, the angle α is 30°. In other embodiments, this angle can also be 25°, 26°, 27°, 28°, 29°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, or 40°, and is not limited here.

[0048] Optionally, in this embodiment, the generatrix of the first functional unit 11 is a straight line. In other embodiments, the generatrix of the first functional unit 11 may also be an arc. In this case, the angle α is the angle between the tangent at the end of the angle and the vertical direction.

[0049] Optionally, such as Figure 2 and Figure 5As shown, the upper side of the functional unit 10 is stepped, with the bottom step 30 being circular, and each of the remaining steps 30 being annular and concentrically positioned with the lens 100. This increases the anti-glare angle emitted from the lens 100. The anti-glare angle refers to the angle between the line connecting the light emitted from the lens 100 and the edge of the anti-glare shield 300 and the horizontal line. After the above arrangement, β1 is the anti-glare angle of this embodiment. The stepped arrangement is equivalent to lowering the top of the lens 100, resulting in a larger anti-glare angle β2 compared to a solution without a stepped arrangement. A larger anti-glare angle makes it harder for the human eye to see the internal optical components, thus improving the anti-glare effect (this is common knowledge in the art).

[0050] Optionally, such as Figure 5 As shown, each of the remaining steps 30 gradually bulges from the outside to the inside. This design ensures that the upper side of the lens 100 maintains a convex structure while sinking, thus ensuring the refractive effect of the lens 100.

[0051] Optionally, such as Figure 2 As shown, the wall of the transmission groove 111 slopes away from the central axis of the lens 100 from the bottom of the groove to its free end. This allows for a larger opening size of the transmission groove 111.

[0052] Optionally, such as Figure 3 As shown, the inner wall of the reflector cup 200 is provided with a first light mixing structure 210; the bottom of the transmission groove 111 is provided with a second light mixing structure 12. The dual light mixing improves the light mixing capability.

[0053] Optionally, in this embodiment, the first light-mixing structure 210 is scales, and the second light-mixing structure 12 is multiple micro-arc surfaces. In other embodiments, the two can be interchanged, or both can be scales, or both can be multiple micro-arc surfaces, which is not limited here.

[0054] Alternatively, the micro-arc surface can be convex or concave, and this is not limited thereto.

[0055] Optionally, such as Figure 6 As shown, a light mixing structure 112 is provided on the bottom of the transmission groove 111 and / or the reflective surface to further increase the light mixing effect and improve the light mixing capability. The pattern of the light mixing structure 112 can refer to the pattern of the first light mixing structure 210, and will not be described in detail here.

[0056] 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 various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments 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. A lens characterized by, It includes a functional part (10) and an overlapping part (20). The overlapping part (20) is annular and protrudes from the peripheral edge of the functional part (10). A transmission groove (111) is opened on the lower side of the functional part (10). The maximum diameter of the functional part (10) is defined as D, and the bottom diameter of the transmission groove (111) is defined as d, where 0.6≤d / D≤1.

2. The lens of claim 1, wherein The portion of the functional part (10) located below the overlapping portion (20) is defined as the first functional part (11). The peripheral sidewall of the first functional part (11) is inclined from the position connected to the overlapping portion (20) to its free end toward the centerline of the lens, and the peripheral sidewall of the first functional part (11) is a reflective surface.

3. The lens of claim 2, wherein A light mixing structure (112) is provided on the bottom of the transmission groove (111) and / or on the reflective surface.

4. The lens of claim 1, wherein The upper side of the functional part (10) is stepped, with the bottom step (30) being circular and each of the remaining steps (30) being annular and concentrically arranged with the lens.

5. The lens of claim 4, wherein, The remaining steps (30) of each layer are arranged to gradually bulge from the outside to the inside.

6. The lens of any one of claims 1-5, wherein, The wall of the transmission groove (111) slopes from the bottom of the groove to its free end in a direction away from the central axis of the lens.

7. A reflector characterized by, include: The lens as described in any one of claims 1-6; The reflector cup (200) has the overlapping part (20) overlapping the top of the reflector cup (200).

8. The reflector of claim 7, wherein, The inner wall of the reflector (200) is provided with a first light-mixing structure (210); and / or The bottom of the transmission groove (111) is provided with a second light mixing structure (12).

9. The reflector of claim 8, wherein, The first light-mixing structure (210) is scales or multiple micro-arc-shaped surfaces; The second light-mixing structure (12) is a scale or multiple micro-arc-shaped surfaces.

10. The reflector of claim 7, wherein, It also includes an anti-glare shield (300), which is fastened to the side of the lens away from the reflector cup (200) and can limit the lens in the axial direction so that the lens abuts against the reflector cup (200).

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