A reflective cup

Abstract

This utility model discloses a reflector cup, including a body with a light outlet at the top and a light inlet at the bottom. Along the direction from the light inlet to the light outlet, a line connecting the two endpoints of the reflective surface curve intersects the curve of the body. The optical structure between the light inlet and the intersection point is a first reflective surface, and the optical structure between the intersection point and the light outlet is a second reflective surface. The first reflective surface at least has the function of adjusting the light emission angle, and the second reflective surface at least has the function of uniformizing the light. This application's design, where the straight line connecting the endpoints of the reflective surface curve intersects the curve of the reflector cup, improves the uniformity and efficiency of the light spot, and alleviates glare. Even when used with lenses, the surface of the lenses can maintain uniform brightness without causing glare, and it also reduces stray light caused by Fresnel reflection from the lenses.

Description

Technical Field

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

[0002] A reflector is an optical component in lighting fixtures, primarily used for secondary light distribution from the light source. (Reference) Figure 1 and Figure 2 As shown, existing reflector lamps typically suffer from uneven light spot brightness, with a central dark area appearing at large beam angles (such as...). Figure 2 (b) shown) or the center is too bright (as shown in the image) Figure 2 (d) shows that when using the lens / lens, there are glaring bright spots on the surface (such as...). Figure 2 (e) and the Fresnel reflection stray light problem, the secondary reflection of the reflector cup leads to a decrease in efficiency, and the root cause of its technical defects lies in:

[0003] Existing reflector curves either overemphasize light control, resulting in uneven light spots, or are excessively diffused, leading to an overly bright center.

[0004] Therefore, existing reflector lamps still have the problem of not being able to completely balance the uniformity of the light spot and the light effect. Utility Model Content

[0005] Based on this, this application provides a reflector cup. The present application designs a straight line formed by connecting the endpoints of the two ends of the reflector cup's reflective surface curve to intersect the curve of the reflector cup. This design can improve the uniformity and light efficiency of the light spot, improve the glare problem, and at the same time reduce stray light from Fresnel reflections of the lens or lens.

[0006] This application proposes a reflective cup, comprising:

[0007] The main body has a light outlet at its top and a light inlet at its bottom. Along the direction from the light inlet to the light outlet of the main body, the line connecting the two endpoints of the reflective surface curve intersects the curved body. The optical structure between the light inlet and the intersection point is a first reflective surface, and the optical structure between the intersection point and the light outlet is a second reflective surface. The first reflective surface has at least the function of adjusting the light emission angle, and the second reflective surface has at least the function of uniformly distributing the light.

[0008] As a preferred embodiment, the first reflective surface is located outside the line connecting the two endpoints, and the second reflective surface is located inside the line connecting the two endpoints.

[0009] As a preferred embodiment, the maximum beam angle of the first reflective surface covers at least 1 / 3 of the light outlet area of ​​the body.

[0010] As a preferred embodiment, the reflective surface of the body is provided with microstructures.

[0011] As a preferred embodiment, the reflector includes a single reflector and a linear reflector.

[0012] As a preferred embodiment, when the reflector cup is used in conjunction with the light source, the Fresnel reflected light is uniformly emitted through the second reflective surface.

[0013] As a preferred embodiment, when the reflector cup is used in conjunction with the light source, the Fresnel reflected light is uniformly emitted through the diverging structure.

[0014] As a preferred embodiment, the surfaces of the first reflective surface and the second reflective surface are provided with reflective films.

[0015] As a preferred embodiment, the reflector cup may have a square, circular, or polygonal optical cavity structure.

[0016] In summary, the reflector provided in this application includes a body with a light outlet at the top and a light inlet at the bottom. Along the direction from the light inlet to the light outlet, the line connecting the two endpoints of the reflective surface curve intersects the curve of the body, forming an optical structure combining a first reflective surface and a second reflective surface. This design, where the straight line connecting the endpoints of the reflective surface curve intersects the curve of the reflector, improves the uniformity and efficiency of the light spot, reduces glare, and ensures that even when used with lenses, the lens surface maintains uniform brightness without causing eye strain. It also reduces stray light caused by Fresnel reflection from lenses. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of a reflector provided by existing technology;

[0018] Figure 2 It is a schematic diagram of the light path and illuminance of the light spot after the light emitted from the light source is reflected by the reflector provided by existing technology;

[0019] Figure 3 This is a cross-sectional schematic diagram of a reflector provided in this application;

[0020] Figure 4 This is a schematic diagram of the line connecting the two endpoints of the reflective surface curve of a reflector cup provided in this application;

[0021] Figure 5 It is the light emitted by the light source that passes through Figure 3 A schematic diagram showing the light path and illuminance of the light spot after reflection from the reflector.

[0022] Figure 6 This is a cross-sectional schematic diagram of a lamp provided in an embodiment of this utility model.

[0023] Figure label:

[0024] 1. Existing reflector; 2. Reflector; 21. Body; 22. Light inlet; 23. Light outlet; 24. First reflecting surface; 25. Second reflecting surface; 3. Light source; 4. Lens or lens. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the present application and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present application are shown in the drawings, not the entire structure. Various modifications and variations can be made to the present application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, the present application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0026] Among the existing technologies, Figure 2 (a) A schematic diagram of the optical path of a reflector provided by the prior art. Figure 2 (b) A schematic diagram of the light spot illuminance of a reflector cup provided by the prior art. Figure 2 (c) A schematic diagram of another optical path for a reflector provided by the prior art. Figure 2 (d) is a schematic diagram of the light spot illuminance of another reflector cup provided by the prior art. Figure 2 (c) A schematic diagram of the Fresnel reflection light path of a reflector cup provided by the prior art.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0028] Figure 3 This is a cross-sectional schematic diagram of a reflector provided in this application. Figure 4 This is a schematic diagram of the line connecting the two endpoints of the reflective surface curve of a reflector cup provided in this application. Figure 6 It is the light emitted by the light source that passes through Figure 3 The provided diagram shows the light path and illuminance of the light spot after reflection from the reflector.

[0029] in, Figure 5 (a) is a schematic diagram of the optical path of a reflector provided in this application. Figure 5 (b) A schematic diagram of the light spot illuminance of a reflector cup provided in this application. Figure 5 (c) is a schematic diagram of the Fresnel reflection light path of the reflector cup provided in this application.

[0030] refer to Figure 4 and Figure 5 As shown, this application embodiment provides a reflector cup 2 including a body 21, with a light inlet 22 at the bottom of the body 21 and a light outlet 23 at the top of the body 21. Along the direction from the light inlet 22 to the light outlet 23 of the body 21, the line connecting the two ends of the reflective surface curve intersects the curve body 21. The optical structure between the light inlet 22 and the intersection point d is a first reflective surface 24, and the optical structure between the intersection point d and the light outlet 23 is a second reflective surface 25. The first reflective surface 24 has at least the function of adjusting the light emission angle, and the second reflective surface 25 has at least the function of uniform light emission.

[0031] For details, please refer to Figure 3 The reflector 2 provided in this application embodiment can be applied to LED lamps. The working principle and beneficial effects of the reflector 2 are as follows:

[0032] The light source 3 of the LED lamp is set at the light inlet 22 and the light emitting surface of the light source 3 is set facing the light outlet 23. The light emitted from the light source 3 is controlled by the first reflective surface 24, and after being scattered by the second reflective surface 25, a uniform light spot is emitted from the light outlet 23.

[0033] Combination Figure 3 and Figure 4 In this application, the reflective surface curve I of the body 21 is designed with a gradient. Along the direction from the light inlet 22 to the light outlet 23, the two random endpoints at the top and bottom of the curve of the body 21 are named points A and B, respectively. The straight line AB formed by connecting points A and B intersects the curve I of the body 21, and the intersection point is named point d. The optical structure with reflective function corresponding to the curve of the body 21 between points B and d is the first reflective surface 24, and the optical structure with reflective function corresponding to the curve of the body 21 between points A and d is the second reflective surface 25. The two form a continuous reflective surface area.

[0034] In this application, the lower half of the reflective surface curve I of the body 21 is designed as the first reflective surface 24, which is located outside the line connecting the two endpoints (endpoint A and endpoint B). The first reflective surface 24 has control over the light emission angle and can also be called the light-controlling segment. After the light source 3 emits light, the light emission angle of the reflector cup 2 can be controlled, making the emitted light spot of the reflector cup 2 more uniform. It should be noted that the reflector cup 2 may also include a mechanical structure for fixing the light source 3 and the body 21, which is not shown in the accompanying drawings of this embodiment.

[0035] In some embodiments, the maximum beam angle after reflection by the first reflecting surface 24 is set to cover at least 1 / 3 of the area of ​​the light outlet 23 of the body 21. Specifically, in conjunction with Figure 5As shown in (a), by setting the surface parameters of the first reflective surface 24, the maximum angle light rays controlled by the reflector 2 can cover more than 1 / 3 of the range of the light outlet 23 of the reflector 2. That is, the maximum angle light ray a must be emitted from within the horizontal width D of the light outlet 23 of the reflector 2. This setting can improve the uniformity of the light spot, and at the same time, it can prevent the light rays emitted from one end of the light inlet 22 of the reflector 2 from being reflected to the top of the corresponding light outlet 23 at the other end of the light inlet 22, thereby avoiding secondary reflection. The surface parameters of the first reflective surface 24 include, but are not limited to, geometric parameters (such as curvature), physical parameters (such as material), or discretization parameters (such as mesh density).

[0036] In existing technology, the light spot emitted from the lower part of the reflector cup 2 is relatively dark in the center. To improve this problem, refer to Figure 3 In this application, the upper half of the reflective surface curve I of the body 21 is set as the second reflective surface 25, which is located inside the line connecting the two endpoints (endpoint A and endpoint B). Figure 5 As shown in (a), the second reflecting surface 25 scatters light, which can also be called the light-diffusing section. This disperses the light, improving the uniformity of the light spot and compensating for the problem of a darker center, thus enhancing the overall uniformity of the light spot emitted from the reflector cup 2. Figure 5 As shown in (b).

[0037] To further improve the uniformity of reflected light from the reflector cup 2, this application incorporates microstructures on the reflective surface of the body 21. Specifically, these microstructures can be relatively flat convex or concave surfaces of varying sizes, which have a diverging effect on light. Light reflected by these microstructures on the reflective surface of the body 21 helps form a uniform light spot. Simultaneously, by rationally controlling the size of these microstructures, such as limiting the scattering structure to micrometer-scale, the degree of light scattering can be effectively controlled. This arrangement prevents excessive scattered light, while also improving the uniformity of the emitted light field distribution, reducing glare, and minimizing light efficiency loss.

[0038] Scattering degree is typically used to describe the intensity or range of scattering phenomena that occur when waves (such as light waves, sound waves, and electromagnetic waves) or particles interact with a medium during propagation. In optics, the smaller the scattering degree, the less light is scattered.

[0039] In the embodiments of this application, reference is made to Figure 5 As shown in (c), the light output of the reflector cup 2 is uniform. When a lens or lens 4 is placed at the light output port 23 of the reflector cup 2, the light output surface of the lens or lens 4 will also have uniform brightness. When the user looks at the surface of the lens or lens 4, there will be no local over-brightness, and there will be no glare.

[0040] At the same time, continue to refer to, such as Figure 5As shown in (c), based on the curved setting of the second reflective surface 25 on the upper part of the reflector cup 2 in this application, the light is diffused. When the reflector cup 2 is used in conjunction with the light source 3, the Fresnel reflected light is uniformly emitted through the upper part of the second reflective surface 25. The asymmetrical curved surface setting of this application increases the divergence of the Fresnel reflected light. Specifically, when the Fresnel reflected light from the lens or lens 4 is reflected back to the upper part of the reflector cup 2, the Fresnel reflected light will still be emitted again in a divergent manner. The Fresnel reflected light is dispersed again, thus preventing strong stray light from appearing and improving the glare problem.

[0041] In some embodiments, reference Figure 3 The surfaces of the first reflective surface 24 and the second reflective surface 25 are provided with reflective films to further increase the reflectivity of the material and improve the reflective efficiency.

[0042] Specifically, the reflective surface of reflector 2 can have an electroplated coating.

[0043] For example, the reflector cup is made of plastic parts plated with aluminum, or aluminum or other metal materials can be used directly, which have high reflective properties.

[0044] In other embodiments, the reflective surface of the reflector cup 2 may also be uncoated, for example, a pure white reflector cup.

[0045] Based on the above embodiments, the reflector 2 includes a single reflector and a linear reflector. The reflector 2 provided in this application embodiment is not limited to a single reflector, but can also be applied to a linear reflector, and its shape includes, but is not limited to, a linear shape, an arc shape, or other shapes.

[0046] Specifically, this can be achieved by connecting the endpoints of the reflective surface curve of a single-lens reflex mirror or a linear reflex mirror with the curve of the reflex mirror.

[0047] Based on the above embodiments, the reflector cup 2 can be square, circular, or polygonal optical cavity structures. The reflector cup 2 provided in this application is not limited to square shapes; it is also applicable to reflector cups 2 in linear, circular, arc-shaped, or other shapes.

[0048] In summary, the reflector provided in this application has a straight line formed by connecting the endpoints of the two ends of the reflective surface curve of the reflector, which intersects with the curve of the reflector. This curve design can improve the uniformity of light output from the reflector, making the light spot effect more uniform. At the same time, compared with existing reflectors, the reflector provided in this application has lower glare and higher efficiency. Even when used with lenses, the surface of the lenses can still output light uniformly, without causing glare to the user, and at the same time, it improves the problem of stray light from Fresnel reflections of lenses.

[0049] Based on the same inventive concept, this application also provides a lighting fixture. Figure 6 This is a cross-sectional schematic diagram of a lamp provided in an embodiment of this utility model, for reference. Figure 6 As shown, the lamp provided in this embodiment includes a light source 3 and a reflector 2 as described in the above embodiments. The light source 3 is disposed at the light inlet 22 of the reflector 2, and the light emitting surface of the light source 3 faces the light outlet 23 of the reflector 2. This lamp includes any of the reflectors 2 provided in the above embodiments, and may also include mechanical fasteners 5, etc., for fixing the light source 3 and the reflector 2. This lamp can be a spotlight, flashlight, or other similar lamp. Therefore, this lamp also has the beneficial effects of the reflector 2 in the above embodiments. The similarities can be understood by referring to the explanation of the reflector 2 above, and will not be repeated below.

[0050] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Features of the various embodiments of the present invention can be partially or wholly coupled or combined with each other, and can cooperate and be technically driven in various ways. Various obvious changes, readjustments, combinations, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A reflective cup, characterized in that, include: The body has a light inlet at its bottom and a light outlet at its top. Along the direction from the light inlet to the light outlet, the optical structure between the light inlet and the light outlet is a reflective surface. The line connecting the top and bottom endpoints of the reflective surface curve intersects the curved body. The optical structure between the light inlet and the intersection point is a first reflective surface, and the optical structure between the intersection point and the light outlet is a second reflective surface. The first reflective surface has at least the function of adjusting the light emission angle, and the second reflective surface has at least the function of uniformly distributing the light.

2. The reflector cup according to claim 1, characterized in that, The first reflective surface is located outside the line connecting the two endpoints, and the second reflective surface is located inside the line connecting the two endpoints.

3. The reflector cup according to claim 1, characterized in that, The maximum beam angle light reflected by the first reflective surface covers at least 1 / 3 of the light outlet area of ​​the body.

4. The reflector cup according to claim 1, characterized in that, The reflective surface of the body is provided with microstructures.

5. The reflector cup according to claim 1, characterized in that, When the reflector is used in conjunction with the light source, Fresnel reflected light is uniformly emitted through the second reflective surface.

6. The reflector cup according to claim 1, characterized in that, When the reflector is used in conjunction with the light source, the Fresnel reflected light is uniformly emitted through the diverging structure.

7. The reflector cup according to claim 1, characterized in that, The surfaces of the first reflective surface and the second reflective surface are provided with reflective films.

8. The reflector cup according to claim 1, characterized in that, The reflector cup can be square, circular, or polygonal optical cavity structures.

9. The reflector cup according to claim 1, characterized in that, The reflector cups include single reflector cups and linear reflector cups, and their shapes include linear and arc-shaped.

Images