Wall light optical system

Abstract

This utility model discloses a wall lamp optical system, comprising: a light source module, including a light-emitting surface with uniformly arranged light-emitting units; a reflector, including a side wall and a light inlet and a light outlet disposed opposite to each other; the light-emitting surface is disposed at the light inlet; wherein, the side wall is a curved surface bent inwards towards the reflector, and the curvature of the side wall in a first direction is greater than the curvature in a second direction; the first direction is parallel to the light-emitting surface, and the second direction is perpendicular to the first direction; an arched light mixing cover is disposed on the side of the reflector near the light source module; and a lampshade is located at the light outlet. This utility model provides a wall lamp optical system that achieves uniform light guidance, achieves a large-area wall washing effect, makes the edge transition of the light spot smoother, and significantly improves lighting quality and visual comfort.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a wall lamp optical system. Background Technology

[0002] Wall lamps can be used as architectural decorative lighting fixtures. Wall lamps can concentrate light onto the desired building wall surface. Therefore, wall lamps need to concentrate and even out the light emitted by the light source.

[0003] In existing technical solutions, wall lamps mainly include lens solutions. Although lens solutions can precisely control the angle of light projection, they are prone to edge color separation and require large-diameter lenses, which affects the consistency of lighting and visual comfort. At the same time, they are difficult to meet the requirements of large light-emitting surface and high brightness. Utility Model Content

[0004] This invention provides a wall lamp optical system that achieves uniform light guidance, resulting in a large-area wall washing effect, smoother transition of light spot edges, and significantly improved lighting quality and visual comfort.

[0005] This utility model embodiment provides a wall lamp optical system, including: The light source module includes a light-emitting surface with evenly arranged light-emitting units; A reflector cup includes a sidewall and a light inlet and a light outlet disposed opposite to each other; the light-emitting surface is disposed at the light inlet; wherein, the sidewall is a curved surface that bends inward toward the reflector cup, and the curvature of the sidewall in a first direction is greater than the curvature in a second direction; the first direction is parallel to the light-emitting surface, and the second direction is perpendicular to the first direction; An arched light-mixing cover is disposed on the side of the reflector near the light source module; The lampshade is located at the light outlet.

[0006] Optionally, the inner wall of the reflector cup is provided with a high-reflectivity coating; Alternatively, the inner wall of the reflector cup is provided with uniformly arranged microstructures, which are used to improve the uniformity of light reflection within the reflector cup.

[0007] Optionally, the arched light mixing mask includes a first curved surface and a second curved surface; wherein the second curved surface is distributed on both sides of the first curved surface, the first curved surface and the second curved surface are integrally formed, and the first curved surface and the second curved surface constitute an arch; the curvature of the second curved surface is less than the curvature of the first curved surface.

[0008] Optionally, the radius of curvature of the first curved surface is in the range of 10mm-14mm; the vertical distance between the light-emitting surface and the highest point on the inner side of the first curved surface is 10mm-12mm.

[0009] Optionally, the arched light mixing mask includes at least two arched sub-light mixing masks, the at least two sub-light mixing masks are arranged along the first direction, adjacent sub-light mixing masks are integrally formed, and the at least two sub-light mixing masks form a wave shape.

[0010] Optionally, the surface of the light-emitting side of the arched light-mixing mask is provided with a uniformly arranged first microstructure.

[0011] Optionally, the first microstructure includes the first protrusion structure; the first protrusion structure is a first spherical structure, and the bottom radius of the first spherical structure is less than 1 mm; the bottom radius of the first spherical structure is less than the spherical radius of the first spherical structure.

[0012] Optionally, the light-incident and light-exiting surfaces of the lampshade are provided with anti-reflective films.

[0013] Optionally, the light-incident surface of the lampshade is provided with a uniformly arranged second microstructure.

[0014] Optionally, the second microstructure includes the second protrusion structure; the second protrusion structure is a second spherical structure, and the bottom radius of the second spherical structure is in the range of 0.5mm-1.5mm; the bottom radius of the second spherical structure is smaller than the spherical radius of the second spherical structure.

[0015] The wall lamp optical system provided in this embodiment of the utility model provides a uniformly arranged light-emitting surface through a light source module. The light emitted from the light-emitting surface is mixed by an arched light mixing cover and then emitted into a reflector cup. The reflector cup adopts a bidirectional negative curvature surface. The curvature of the sidewall in the first direction is greater than that in the second direction. The larger curvature in the first direction can compress light with a larger beam angle, ensuring that the beam maintains a high brightness within the illumination range. The relatively smaller curvature in the second direction helps to diffuse the light, thereby achieving a large-area wall washing effect, realizing uniform light guidance, making the edge transition of the light spot smoother, and significantly improving lighting quality and visual comfort. Attached Figure Description

[0016] Figure 1 This invention provides a schematic cross-sectional view of a wall lamp optical system as described in an embodiment of the present invention. Figure 2 This invention provides a side view of the cross-sectional structure of a wall lamp optical system according to an embodiment of the present invention. Figure 3 for Figure 1 Schematic diagram of the reflector cup of the central wall lamp optical system; Figure 4 A schematic diagram of the structure of an arched light mixing mask is provided for an embodiment of this utility model; Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the arched light-mixing mask in front view; Figure 6 A cross-sectional structural diagram of a first spherical structure is provided for an embodiment of this utility model; Figure 7 This provides a structural schematic diagram of another arched light mixing mask for embodiments of the present utility model. Detailed Implementation

[0017] 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, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Figure 1 This invention provides a frontal view of a cross-sectional structural diagram of a wall lamp optical system according to an embodiment of the present invention. Figure 2 This invention provides a side view of the cross-sectional structure of a wall lamp optical system according to an embodiment of the present invention. Figure 3 for Figure 1 See the schematic diagram of the reflector cup of the central wall lamp optical system. Figure 1 , Figure 2 and Figure 3 The wall lighting optical system includes: The light source module 110 includes a light-emitting surface in which light-emitting units 111 are evenly arranged; The reflector cup 120 includes a side wall and a light inlet 123 and a light outlet 124 disposed opposite to each other; the light-emitting surface is disposed in the light inlet 123; wherein, the side wall is a curved surface that bends inward into the reflector cup 120, and the curvature of the side wall in the first direction X is greater than the curvature in the second direction Y; the first direction X is parallel to the light-emitting surface, and the second direction Y is perpendicular to the first direction X. An arched light mixing cover 130 is positioned on the side of the reflector 120 near the light source module 110; A lampshade (not shown) is located at light outlet 124.

[0019] Specifically, the light source module 110 includes multiple light-emitting units 111. Each light-emitting unit 111 can use an LED light source, which can be a white light source, an RGB light source, or a hybrid of white and RGB light sources. In this embodiment, the light-emitting units 111 can use a hybrid light source, which broadens the color temperature adjustment range and achieves high brightness output. The light-emitting units 111 are evenly distributed on a plane, forming a light-emitting surface with a certain light-emitting area. By adjusting the spacing and arrangement of the light-emitting units 111, the size of the light-emitting surface can be adjusted. Combined with the depth setting of the reflector cup 120, the beam angle of the emitted light source can be controlled. For example, if a beam angle of 60° is required, the arrangement of the light-emitting units 111 can be optimized to make the light source as compact as possible, thereby reducing the light-emitting area and facilitating beam angle adjustment without increasing the depth of the reflector cup 120. The beam angle is the angle formed by a certain percentage of luminous intensity on both sides of the beam's main axis, and it characterizes the size and intensity of the light spot on the illuminated wall. For the same light source, the larger the beam angle, the smaller the central light intensity and the larger the light spot.

[0020] The reflector cup 120 is formed by side walls forming a barrel-shaped structure. This barrel-shaped structure can be a four-sided barrel-shaped structure, a multi-sided barrel-shaped structure, or a barrel-shaped structure with a smooth curved surface; no specific limitation is made here. In this embodiment of the invention, for example, the side walls include a first side wall 121 and a second side wall 122. The first side wall 121 and the second side wall 122 form a four-sided barrel-shaped structure, wherein the two ends enclosed by the first side wall 121 and the second side wall 122 respectively form a light inlet 123 and a light outlet 124. The light-emitting surface is disposed on one side of the light inlet 123. The light inlet 123 and the light outlet 124 can exhibit different shapes depending on the edge shapes of the first side wall 121 and the second side wall 122, and the enclosing angle of the first side wall 121 and the second side wall 122. In this embodiment of the present invention, the light inlet 123 and the light outlet 124 are rectangular in shape, the size of the light inlet 123 is smaller than the size of the light outlet 124, and the main optical axis of the light-emitting surface can be on the same straight line as the center of the light inlet 123 and the center of the light outlet 124.

[0021] An arched light-mixing cover 130 is disposed within a reflector cup 120 on one side of the light-emitting surface. The arched light-mixing cover 130 can protrude towards the light-emitting port 124 to form an arched shape. The arched light-mixing cover 130 can be integrally formed with the reflector cup 120, and the center of the arched light-mixing cover 130 has a certain vertical height from the light-emitting surface. The arched interior of the arched light-mixing cover 130 can serve as an optical cavity. The light emitted from the light-emitting unit 111 is mixed by reflection and refraction in the optical cavity before being emitted into the reflector cup 120. The arched light-mixing cover 130 can uniformly mix the emitted light, avoiding sudden changes in local brightness.

[0022] After the light emitted from the emitting surface passes through the arched mixing mask 130, the reflector 120 acts as a secondary regulator, further smoothing the light emitted from the arched mixing mask 130. The light is then reflected by the emitting cup and emitted at a predetermined beam angle. To achieve the predetermined beam angle output, the first sidewall 121 and the second sidewall 122 of the reflector 120 can be configured as surfaces with bidirectional negative curvature. That is, the first sidewall 121 and the second sidewall 122 are concave surfaces that curve inwards towards the reflector 120. The curvatures of the first sidewall 121 and the second sidewall 122 differ in the first direction X and the second direction Y. Here, the first direction X is parallel to the emitting surface; if the emitting surface is considered horizontal, then the first direction X can be horizontal, and the second direction Y is vertical. The curvature of the first sidewall 121 and the second sidewall 122 in the horizontal direction is greater than the curvature in the vertical direction. The larger curvature in the horizontal direction can compress light with a larger beam angle, ensuring that the beam maintains high brightness within the illumination range. For example, when applied to a 60° beam angle design, by adjusting the curvature of the first sidewall 121 and the second sidewall 122 in the first direction X, light beams with angles greater than 60° can be contracted to meet application requirements. A relatively smaller curvature in the vertical direction helps to diffuse the light, allowing reflected light to be evenly projected onto the wall. Therefore, by setting a reflector 120 with bidirectional negative curvature, large-area illumination is achieved, reducing the concentrated projection point of the beam and improving the uniformity and three-dimensionality of spatial lighting. The lampshade is located at the light outlet 124, and the lampshade can be made of transparent PC to avoid affecting the light output efficiency.

[0023] The wall lamp optical system provided in this embodiment of the utility model provides a uniformly arranged light-emitting surface through the light source module 110. The light emitted from the light-emitting surface is mixed by the arched light mixing cover 130 and then emitted into the reflector cup 120. The reflector cup 120 adopts a bidirectional negative curvature surface. The curvature of the sidewall in the first direction X is greater than the curvature in the second direction Y. The larger curvature in the first direction X can compress the light with a larger beam angle, ensuring that the beam maintains a high brightness within the illumination range. The relatively smaller curvature in the second direction Y helps to diffuse the light, thereby achieving a large-area wall washing effect, realizing uniform light guidance, making the transition of the light spot edge smoother, and significantly improving the lighting quality and visual comfort.

[0024] To further improve the light reflection efficiency in the reflector cup 120, a high-reflectivity coating can be applied to the inner wall of the reflector cup 120. For example, a PET silver reflective film or a high-reflectivity aluminum coating can be applied to the inner wall of the reflector cup 120 to improve the utilization rate of light, reduce internal light intensity loss, and further enhance the uniformity and brightness of the overall lighting.

[0025] In some embodiments, a uniformly arranged microstructure can be provided on the inner wall of the reflector cup 120. The microstructure can be a special optical surface structure formed through fine processing, such as a scale-like microstructure. The scale-like microstructure can be formed by continuous splicing of directional, rhomboid, or hexagonal structures. By precisely controlling the dimensions of the scale-like microstructure, such as its width, height, and spacing, the reflection angle and distribution range of light can be adjusted, further optimizing the reflection uniformity and making the reflected light more evenly distributed. This helps improve beam control and further enhances the lighting quality.

[0026] Figure 4 This invention provides a schematic diagram of the structure of an arched light-mixing mask according to an embodiment of the present invention. Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the arched light-mixing mask in front view, see [reference]. Figure 4 and Figure 5 The arched light mixing mask 130 includes a first curved surface 131 and a second curved surface 132; wherein, the second curved surface 132 is distributed on both sides of the first curved surface 131, the first curved surface 131 and the second curved surface 132 are integrally formed, and the first curved surface 131 and the second curved surface 132 form an arch; the curvature of the second curved surface 132 is less than the curvature of the first curved surface 131.

[0027] Specifically, the first curved surface 131 and the second curved surface 132 are integrally formed and connected. The arched light mixing mask 130 is arched in shape. The arched light mixing mask 130 includes the first curved surface 131 and the second curved surface 132. The second curved surface 132 is symmetrically distributed on both sides of the first curved surface 131. The first curved surface 131 can be referred to as the central region of the arched light mixing mask 130, and the second curved surface 132 can be referred to as the edge region of the arched light mixing mask 130. The curvature of the second curved surface 132 is less than the curvature of the first curved surface 131. Therefore, the curvature of the arched light mixing mask 130 is not uniformly distributed; the central region of the arched light mixing mask 130 has a larger arc, while the edge region has a smaller arc. Figure 1 and Figure 2 Light emitted from the edge of the emitting surface can enter the reflector cup 120 through the edge area, while light emitted from the central part of the emitting surface can enter the reflector cup 120 through the central area. This ensures that light from any angle can pass through the first curved surface 131 and the second curved surface 132 before entering the reflector cup 120, reducing reflection loss of incident light within the arched mixing chamber 130, ensuring uniform light distribution, and avoiding sudden changes in local brightness. After reflection within the reflector cup 120, due to the curvature of the first curved surface 131, the reflected light is prone to total internal reflection at the first curved surface 131 and will not re-enter the arched mixing chamber 130, thus avoiding any impact on light extraction efficiency.

[0028] Based on the above embodiments, optionally, the radius of curvature of the first curved surface 131 is in the range of 10mm-14mm; the vertical distance between the light-emitting surface and the highest point of the inner side of the first curved surface 131 is in the range of 10mm-12mm.

[0029] Specifically, the midpoint of the first curved surface 131 and the midpoint of the emitting surface can be on the same straight line, and the radius of curvature of the first curved surface 131 can be 10 mm, 11 mm, 12 mm, 13 mm, or 14 mm. The vertical distance D between the emitting surface and the highest point on the inner side of the first curved surface 131 can be 10 mm, 10.5 mm, 11 mm, 11.5 mm, or 12 mm. For example, in this embodiment of the present invention, the radius of curvature of the first curved surface 131 can be selected as 13 mm, the angle α of the first curved surface 131 can be a 95° region, and the vertical distance D between the emitting surface and the highest point on the inner side of the first curved surface 131 can be 11.25 mm, to ensure uniform light distribution and to ensure that reflected light does not re-enter the arched light mixing cover 130.

[0030] To further enhance the uniform diffusion effect of light, a uniformly arranged first microstructure can be provided on the surface of the light-emitting side of the arched light-mixing mask 130. The first microstructure can be a special optical curved surface structure formed through fine processing. The first microstructure is used to diffuse the emitted light from the arched light-mixing mask 130 multiple times, making the light more uniform during propagation. In this embodiment, the first microstructure can be a first protrusion structure 135. For example, the first protrusion structure 135 can be a first spherical structure, composed of a portion of a sphere. A smaller spherical curvature produces a larger refraction angle, causing the beam angle to be reduced once during light mixing, thereby reducing multiple reflections of the light in the reflector cup 120. The first spherical structure can be arranged in a rectangular, rhomboid, or hexagonal pattern. By adjusting the width, height, and spacing of the first spherical structure, the range of light diffusion can be adjusted, improving the uniformity of the light. In this embodiment, Figure 6 A cross-sectional structural diagram of a first spherical structure is provided for an embodiment of this utility model. See [link / reference]. Figure 6 The bottom radius r of the first spherical structure is less than 1 mm, which is suitable for applications with narrow beam angles. Furthermore, the bottom radius r of the first spherical structure is less than the spherical radius R of the first spherical structure, ensuring uniform light mixing on the emitting surface.

[0031] Figure 7 A schematic diagram of another arched light-mixing mask is provided for embodiments of this utility model. See also: Figure 7The arched light mixing mask 130 includes at least two arched sub-light mixing masks 133, the at least two sub-light mixing masks 133 are arranged along the first direction X, adjacent sub-light mixing masks 133 are integrally formed, and the at least two sub-light mixing masks 133 form a wave shape.

[0032] Specifically, the arched light mixing mask 130 can be composed of multiple arched sub-light mixing masks 133 arranged together, wherein adjacent sub-light mixing masks 133 are integrally connected and molded. This embodiment of the invention uses two arched sub-light mixing masks 133 as an example for illustration; the sub-light mixing masks 133 are arranged in a row, and the sub-light mixing masks 133 can be integrally molded. Compared to... Figure 3 The height of the connection point between the arched mixing mask 130 and the adjacent sub-mixing masks 133 should be lower than that of the arched mixing mask 130. Figure 3 The apex height of the single arched light mixing mask 130, with its multi-arched design creating an "M"-like wave-like transition, reduces the overall arch height, allowing for more precise light control, improved light mixing, and a smaller structural volume. It should be noted that the connection points of adjacent sub-light mixing masks 133 need to have a certain vertical height from the emitting surface; that is, the recessed portion 134 formed by the surfaces of adjacent sub-light mixing masks 133 at the connection points cannot be too deep. The connection points of adjacent sub-light mixing masks 133 on the incident light side can polarize the brightest light rays from the center of the emitting surface, further improving light uniformity.

[0033] Optionally, a uniformly arranged first protrusion structure 135 can also be provided on the light-emitting side surface of the wavy arched light-mixing mask 130. The first protrusion structure 135 can be a first spherical structure, which can ensure uniform light mixing of the light-emitting surface.

[0034] Optionally, the light-incident and light-exit surfaces of the lampshade are provided with anti-reflection films. By applying double-sided coatings to both sides of the lampshade, multiple reflections of light within the lampshade are reduced, light transmittance is improved, and uneven light and shadow caused by Fresnel loss are avoided, thereby eliminating shadows and making the light that finally illuminates the wall more uniform and bright.

[0035] Optionally, the light-incident surface of the lampshade can be further optimized with more refined microstructures. For example, a second microstructure can be etched onto the light-incident surface of the lampshade. This second microstructure can effectively adjust the refraction and scattering direction of light, reducing multiple reflections before the light exits. Simultaneously, this method can reduce the influence of stray light, improve lighting comfort, and avoid problems such as obvious beam boundaries or uneven light spots. For example, the light-incident surface of the lampshade can be provided with uniformly arranged second microstructures. These second microstructures can be specially formed optical curved surfaces through fine processing. These second microstructures are used to diffuse the incident light from the lampshade multiple times, making the light more uniform during propagation. The second microstructure can be a second protrusion structure; for example, the second protrusion structure can be a second spherical structure. The second spherical structures can be arranged in a rectangular, rhomboid, or hexagonal pattern. By adjusting the width, height, and spacing of the second spherical structures, the range of light diffusion can be adjusted, improving the uniformity of the light. The bottom radius of the second spherical structure ranges from 0.5mm to 1.5mm; the bottom radius of the second spherical structure is smaller than the spherical radius of the second spherical structure to ensure the uniformity of the emitted light rays.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wall lamp optical system, characterized in that, include: The light source module includes a light-emitting surface with evenly arranged light-emitting units; A reflector cup includes a sidewall and a light inlet and a light outlet disposed opposite to each other; the light-emitting surface is disposed at the light inlet; wherein, the sidewall is a curved surface that bends inward toward the reflector cup, and the curvature of the sidewall in a first direction is greater than the curvature in a second direction; the first direction is parallel to the light-emitting surface, and the second direction is perpendicular to the first direction; An arched light-mixing cover is disposed on the side of the reflector near the light source module; The lampshade is located at the light outlet.

2. The wall lamp optical system according to claim 1, characterized in that, The inner wall of the reflector cup is provided with a high-reflectivity coating; Alternatively, the inner wall of the reflector cup is provided with uniformly arranged microstructures, which are used to improve the uniformity of light reflection within the reflector cup.

3. The wall lamp optical system according to claim 1, characterized in that, The arched light mixing mask includes a first curved surface and a second curved surface; wherein, the second curved surface is distributed on both sides of the first curved surface, the first curved surface and the second curved surface are integrally formed, and the first curved surface and the second curved surface form an arch; the curvature of the second curved surface is less than the curvature of the first curved surface.

4. The wall lamp optical system according to claim 3, characterized in that, The radius of curvature of the first curved surface ranges from 10mm to 14mm; the vertical distance between the light-emitting surface and the highest point on the inner side of the first curved surface is 10mm to 12mm.

5. The wall lamp optical system according to claim 1, characterized in that, The arched light mixing mask includes at least two arched sub-light mixing masks, which are arranged along the first direction. Adjacent sub-light mixing masks are integrally formed, and at least two sub-light mixing masks form a wave shape.

6. The wall lamp optical system according to any one of claims 3-5, characterized in that, The surface of the light-emitting side of the arched light-mixing mask is provided with a uniformly arranged first microstructure.

7. The wall lamp optical system according to claim 6, characterized in that, The first microstructure includes a first protrusion structure; The first protrusion structure is a first spherical structure, and the bottom radius of the first spherical structure is less than 1 mm; the bottom radius of the first spherical structure is less than the spherical radius of the first spherical structure.

8. The wall lamp optical system according to claim 1, characterized in that, The light-incident and light-exiting surfaces of the lampshade are provided with anti-reflective films.

9. The wall lamp optical system according to claim 1, characterized in that, The light-incident side of the lampshade is provided with a uniformly arranged second microstructure.

10. The wall lamp optical system according to claim 9, characterized in that, The second microstructure includes a second protrusion structure; The second protrusion structure is a second spherical structure, and the bottom radius of the second spherical structure is in the range of 0.5mm-1.5mm; the bottom radius of the second spherical structure is smaller than the spherical radius of the second spherical structure.

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