Optical reflector and lamp

Abstract

The utility model discloses an optical reflector and a lamp. The optical reflector comprises a wedge-shaped body defined by a first reflecting surface, a third reflecting surface and two second reflecting surfaces, the first reflecting surface and the third reflecting surface are oppositely arranged, and the two second reflecting surfaces are adjacent to the first reflecting surface and the third reflecting surface respectively and are oppositely arranged; the upper bottom surface of the wedge-shaped body is a light source incident port, and the lower bottom surface of the wedge-shaped body is a light outlet; the area of the light outlet is larger than that of the light source incident port; the first reflecting surface, the third reflecting surface and the two second reflecting surfaces are all planes or curved surfaces. According to the technical scheme, the curved surface curvature is high in accuracy, economical efficiency is achieved, and mass production and manufacturing can be achieved; meanwhile, structural assembly is simple, the optical requirement is directly met through a single element, a product and a lamp light-emitting assembly can be directly assembled together, an additional assembling structure is not needed, and cost is greatly saved.

Description

Technical Field

[0001] This utility model belongs to the field of lighting fixture technology, and in particular to an optical reflector and a lamp. Background Technology

[0002] Current lighting fixtures primarily utilize two types of optical components: lenses and reflectors. Lenses are typically made of plastics (such as PC, PMMA, silicone, etc.) or glass. Reflectors are often made of metal, plastic electroplating, or metal electroplating. Both methods have their drawbacks:

[0003] 1) Because the lens material itself is transparent, when using a reflective or refractive lens design, the lighting device will produce glare and stray light problems. Glare and stray light reduce the comfort of people moving around in the illuminated area, increase the driving safety hazards of vehicles on nearby roads, and cause light intrusion and light pollution to surrounding residential areas. To reduce glare and stray light, additional light-blocking structures (grilles, light shields, etc.) need to be added to the luminaire, which directly reduces the light output efficiency of the luminaire and increases energy consumption.

[0004] 2) Reflectors are mostly made of metal. The main drawbacks of using metal as optical components lie in the surface finish of the metal and the precision of the metal processing technology. The surface finish of a metal optical component determines the reflectivity of light. Generally, metal components require a mirror-like or near-mirror-level surface finish, which necessitates a separate mirror coating treatment. However, after coating, the surface finish cannot be guaranteed during curved surface machining, affecting the optical performance of the component. Conventional processing methods cannot guarantee the surface precision of metal optical components. If high-precision machining is used for curved surface machining before mirror coating treatment, the overall cost will increase significantly, making large-scale production impossible.

[0005] In addition to derivatives of reflectors, there is another process on the market that combines plastic electroplating with aluminum sheets. This process assembles plastic and metal parts together, which not only increases the complexity of product manufacturing but also increases the product cost. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, an optical reflector and lamp are proposed.

[0007] An optical reflector includes a wedge-shaped body formed by a first reflecting surface, a third reflecting surface, and two second reflecting surfaces; the first reflecting surface and the third reflecting surface are arranged facing each other, and the two second reflecting surfaces are respectively adjacent to the first reflecting surface and the third reflecting surface and are arranged facing each other; the upper bottom surface of the wedge-shaped body is a light source inlet, and the lower bottom surface of the wedge-shaped body is a light outlet; the area of ​​the light outlet is larger than the area of ​​the light source inlet; the first reflecting surface, the third reflecting surface, and the two second reflecting surfaces are all planar or curved surfaces.

[0008] Preferably, the optical reflector is a one-piece molded structure.

[0009] Preferably, the angles between the first reflective surface and the third reflective surface and the plane where the light source entrance is located are between 0° and 90°; the two second reflective surfaces are symmetrically arranged, and the angles between the two second reflective surfaces and the plane where the light source entrance is located are between 0° and 90°.

[0010] Preferably, the number of the wedges is one or more, and the multiple wedges are arranged side by side.

[0011] Preferably, the optical reflector is made of a high heat-resistant plastic material and undergoes a thin film deposition process on its surface.

[0012] A luminaire includes a light source and an optical reflector as described above; the light source is disposed at the light source entrance.

[0013] Preferably, when the first portion of the light from the light source passes through the inner wall of the first reflective surface, a portion is reflected and emitted from the light outlet at an angle parallel to the third reflective surface as a whole, while the other portion is reflected by the third reflective surface and emitted from the light outlet.

[0014] Preferably, the second portion of the light from the light source is emitted directly from the light outlet.

[0015] Preferably, the third portion of the light from the light source is reflected by the inner wall of the third reflective surface and then emitted from the light outlet.

[0016] Preferably, when the second reflective surface is a plane, the fourth portion of the light from the light source forms a diverging light effect at the light outlet after passing through the second reflective surface; when the second reflective surface is a curved surface, the fourth portion of the light from the light source forms a converging light effect at the light outlet after passing through the second reflective surface.

[0017] The optical reflector provided by this utility model adopts an integrated structure. The main body of the structure is designed based on the principle of edge rays and the law of reflection. The surface of the main body is coated with a physical vapor deposition process to achieve a high reflectivity effect. At the same time, it can directly intercept light rays in large-angle directions and reflect them to a designated area, reducing stray light and improving the luminous flux utilization rate of the lamp.

[0018] Compared with the optical design of other existing point light sources, this solution is based on the optical design of extended light source (or surface light source), which is closer to the actual measurement effect and has higher data accuracy. It not only meets the high precision of surface smoothness and curvature of optical components, but also has economic efficiency and can be mass-produced.

[0019] The lamp provided by this utility model has a compact structure, and multiple light sources can be placed inside the optical reflector, resulting in higher space utilization. More light sources can be arranged in the same size, and the luminous efficiency of a single lamp is higher. The number of lamps can be reduced in the same application scenario, thus reducing energy consumption.

[0020] Compared with existing technologies, the structure is simple to assemble, and optical requirements are met directly with a single component. The product can be directly assembled with the light-emitting components of the lamp without the need for additional assembly structures, which greatly saves costs. Attached Figure Description

[0021] Figure 1 This is a perspective view of the optical reflector in an embodiment of the present invention;

[0022] Figure 2 This is another perspective view of the optical reflector in an embodiment of the present invention;

[0023] Figure 3 This is a side view of the optical reflector in an embodiment of the present invention;

[0024] Figure 4 This is a side sectional view of the optical reflector in an embodiment of the present invention (optical path diagram of the first part of the light rays);

[0025] Figure 5 This is another cross-sectional view (light path diagram of the second part of the light rays) of the optical reflector in an embodiment of this utility model;

[0026] Figure 6 This is another cross-sectional view (the third part is the light path diagram of the optical reflector in this embodiment of the present invention);

[0027] Figure 7 This is another cross-sectional view of the optical reflector in an embodiment of the present invention (a diagram of the re-reflection of the first portion of the light rays);

[0028] Figure 8This is a top sectional view of the optical reflector in an embodiment of the present invention (part four: light divergence effect diagram);

[0029] Figure 9 This is another top sectional view of the optical reflector in this embodiment of the present invention (part four: light convergence effect diagram);

[0030] Figure 10 This is a diagram illustrating the light distribution effect of the optical reflector in an embodiment of this utility model.

[0031] The markings in the accompanying drawings are as follows:

[0032] 100. Optical reflector; 101. First reflecting surface; 102. Second reflecting surface; 103. Third reflecting surface; 104. Light source entrance; 105. Light exit; 200. Light source; 201. First portion of light rays; 202. Second portion of light rays; 203. Third portion of light rays; 204. Fourth portion of light rays; 205. Reflected light rays from the first reflecting surface. Detailed Implementation

[0033] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] Provide an optical reflector and a lamp, such as Figures 1 to 10 As shown, the optical reflector 100 includes a wedge-shaped body formed by a first reflecting surface 101, a third reflecting surface 103, and two second reflecting surfaces 102; the first reflecting surface and the third reflecting surface are arranged facing each other, and the two second reflecting surfaces are respectively adjacent to the first reflecting surface and the third reflecting surface and are arranged facing each other; the upper bottom surface of the wedge-shaped body is the light source inlet 104, and the lower bottom surface of the wedge-shaped body is the light outlet 105; the area of ​​the light outlet is larger than the area of ​​the light source inlet; the first reflecting surface, the third reflecting surface, and the two second reflecting surfaces are all planar or curved surfaces.

[0035] The luminaire includes a light source 200 and the aforementioned optical reflector 100, with the light source positioned at the light source entrance. The emitted light from the light source includes a first ray 201, a second ray 202, a third ray 203, and a fourth ray 204.

[0036] Specifically, the optical reflector adopts a one-piece molded structure and high heat-resistant plastic material, and the surface is treated with a thin film deposition process. It can directly intercept light rays in a wide angle direction and reflect them to a designated area, reducing stray light and improving the luminous flux utilization rate of the lamp, so as to achieve the purpose of precise light control.

[0037] Understandably, optical reflectors are not limited to a single-piece structure; they can also be assembled from two parts.

[0038] The shapes and curvatures of the first, second, and third reflecting surfaces are designed based on the collimation characteristics of a compound parabola, the principle of edge rays, and the law of reflection. When a cross-section is made perpendicular to both the first and third reflecting surfaces, the path of the light emitted by the light source is as follows:

[0039] The first portion of the light ray 201 is reflected by the first reflecting surface. Figure 4 The diagram shows a cross-sectional view of the light reflection principle of the first reflecting surface. The light ray 201 is reflected by the top, middle and bottom of the inner wall of the first reflecting surface and is kept parallel to the outside. The angle between the parallel outgoing light ray and the S1 surface passing through the light source plane can be controlled within the range of 0-90° by adjusting the shape of the first reflecting surface. That is, the first reflecting surface can be made into a plane or a curved surface.

[0040] like Figure 5 As shown, the second part of the light beam 202 is emitted directly through the reflector cavity.

[0041] The third part of the light ray 203 is reflected by the third reflecting surface. Figure 6 This is a cross-sectional diagram illustrating the light reflection principle of the third reflecting surface. Light ray 203 is reflected from the top, middle, and bottom of the third reflecting surface. Furthermore, as... Figure 7 As shown, a small portion of the light rays reflected by the first reflecting surface 205 will continue to be reflected after reaching the third reflecting surface. The reflected light rays exit through the top, middle, and bottom of the third reflecting surface. Therefore, in addition to reflecting light, the third reflecting surface also shields the light source, preventing glare caused by the light emitted directly from the light source. The angle between the third reflecting surface and the S1 surface passing through the light source plane is set in the range of 0-90°, meaning that the third reflecting surface can be made into a plane or a curved surface.

[0042] like Figure 8 , 9 As shown, in the cross-section of the upper view, light rays are reflected by the second reflecting surface. By changing the surface shape of the second reflecting surface, the effects of light divergence and convergence can be achieved respectively. The angle between the second reflecting surface and the S2 surface passing through the light source plane is set in the range of 0-90°, that is, the second reflecting surface can be made into a plane or a curved surface.

[0043] In summary, the light distribution effect of this optical reflector is as follows: Figure 10 As shown.

[0044] Furthermore, the number of wedges is more than one, and multiple wedges are arranged side by side. This allows multiple light sources to be placed inside the optical reflector, resulting in higher space utilization and more light sources can be accommodated within the same luminaire size. Because individual luminaires have higher luminous efficiency, the number of luminaires can be reduced for the same application scenario, thus lowering energy consumption.

[0045] The above is a description of the present utility model to help understand it; however, the implementation of the present utility model is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An optical reflector, characterized in that, The device includes a wedge-shaped body formed by a first reflecting surface, a third reflecting surface, and two second reflecting surfaces. The first reflecting surface and the third reflecting surface are arranged facing each other, and the two second reflecting surfaces are respectively adjacent to the first reflecting surface and the third reflecting surface and are arranged facing each other. The upper bottom surface of the wedge-shaped body is the light source inlet, and the lower bottom surface of the wedge-shaped body is the light outlet. The area of ​​the light outlet is larger than the area of ​​the light source inlet. The first reflecting surface, the third reflecting surface, and the two second reflecting surfaces are all planar or curved surfaces.

2. The optical reflector as claimed in claim 1, characterized in that, The optical reflector is a one-piece molded structure.

3. The optical reflector as claimed in claim 1, characterized in that, The angles between the first reflective surface and the third reflective surface and the plane where the light source entrance is located are between 0° and 90°; the two second reflective surfaces are symmetrically arranged, and the angles between the two second reflective surfaces and the plane where the light source entrance is located are between 0° and 90°.

4. The optical reflector as claimed in claim 1, characterized in that, The number of wedges is one or more, and the wedges are arranged side by side.

5. The optical reflector as claimed in any one of claims 1 to 4, characterized in that, The optical reflector is made of a high heat-resistant plastic material and undergoes a thin film deposition process on its surface.

6. A lamp, characterized in that, It includes a light source and an optical reflector as described in any one of claims 1 to 5; the light source is disposed at the light source entrance.

7. The lamp as described in claim 6, characterized in that, When the first portion of the light from the light source passes through the inner wall of the first reflective surface, part of it is reflected and emitted from the light outlet at an angle parallel to the third reflective surface as a whole, while the other portion is reflected by the third reflective surface and emitted from the light outlet.

8. The lamp as described in claim 7, characterized in that, The second portion of the light from the light source is emitted directly from the light outlet.

9. The lamp as described in claim 8, characterized in that, The third portion of the light from the light source is reflected by the inner wall of the third reflecting surface and then emitted from the light outlet.

10. The lamp as described in claim 9, characterized in that, When the second reflective surface is a plane, the fourth portion of the light from the light source forms a diverging light effect at the light outlet after passing through the second reflective surface; when the second reflective surface is a curved surface, the fourth portion of the light from the light source forms a converging light effect at the light outlet after passing through the second reflective surface.

Images