High-power tube spotlight optical module system capable of realizing uniform transition of direct light spots

Abstract

The utility model relates to a high-power tube spotlight optical module system capable of realizing uniform transition of direct light spots, which comprises a first reflection cup and a second Fresnel lens which are sequentially arranged along the light emitting direction of a light source, a light inlet of the first reflection cup is tightly attached to a COB light source, and the second Fresnel lens is arranged at the light outlet of the first reflection cup. A microstructure array and textures are arranged on the light-in face of the second Fresnel lens, and a Fresnel gear is arranged on the light-out face of the second Fresnel lens. By adopting the high-power cylindrical spotlight optical module system capable of realizing uniform transition of the direct illumination light spots, small-angle light rays and large-angle light rays emitted by the light source can be effectively controlled, so that the light spots with low glare and uniform transition are obtained, the distance from the light source to the light incident surface of the lens can be increased, and the brightness of the lens is improved. And the irradiance of the light incident surface of the lens is reduced, and a solution with higher power can be borne.

Description

Technical Field

[0001] This utility model relates to the field of optical lighting fixtures, and more particularly to the field of optical solutions for high-power downlights and spotlights. Specifically, it refers to a high-power downlight and spotlight optical module system that achieves uniform transition of direct illumination spotlight. Background Technology

[0002] Currently, the optical solutions for high-power downlights and spotlights on the market mainly use aluminum-coated reflectors or TIR lenses. Aluminum-coated reflector solutions require adjusting the generatrix and scales of the reflector to meet beam angle requirements of 15° / 24° / 36° / 60° while maintaining the same height and diameter. They can only control the large-angle light emitted by the light source; further control requires increasing the reflector height, making the reflector height relatively higher than that of TIR lenses, hindering lamp miniaturization. Additionally, because the small-angle light emitted by the light source is emitted directly without control, the resulting spot size is large, glare is heavy, and the transition of the direct light spot is uneven. While TIR lens solutions can effectively control both large and small-angle light emitted by the light source, the distance between the light-incident surface and the light source is very close, typically about half the overall height of the TIR lens. This results in high irradiance on the light-incident surface, leading to high temperatures. In high-power downlights and spotlights, this can easily cause lens burning, cracking, yellowing, and other problems that affect the overall lamp's optical lifespan. With the increasing demands for high-power downlight luminous efficacy, uniformity of direct illumination spot transition, and optical lifespan of luminaires, a new optical solution is urgently needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-power downlight optical module system that is easy to operate, has a wide range of applications, and achieves uniform transition of direct illumination spot.

[0004] To achieve the above objectives, the high-power downlight optical module system of this utility model, which achieves uniform transition of direct illumination spot, is as follows:

[0005] This high-power downlight optical module system, which achieves uniform transition of direct illumination spot, is characterized by comprising a COB light source, a COB light source mounting bracket, a first reflector, and a second Fresnel lens. The COB light source is mounted on the COB light source mounting bracket, and the first reflector is also mounted on the COB light source mounting bracket. The first reflector has a first light-incident surface and a first light-exit surface. The first light-incident surface is closely attached to the COB light source, and the second Fresnel lens is positioned at the light-exit surface of the first reflector.

[0006] Preferably, the second Fresnel lens has a second Fresnel lens incident surface and a second Fresnel lens exit surface. The second Fresnel lens incident surface is located on the side closest to the first reflector. The second Fresnel lens incident surface is provided with a microstructure array and etching, and the second Fresnel lens exit surface is provided with Fresnel gears.

[0007] Preferably, the system includes a plurality of second Fresnel lenses, the plurality of second Fresnel lenses having different focal lengths.

[0008] Preferably, the first reflector further includes a mounting clip, which is located at the edge of the light-emitting surface of the first reflector, and the second Fresnel lens is mounted on the mounting clip of the first reflector.

[0009] Preferably, the beam angle of the first reflector cup is 70±5°.

[0010] This invention relates to a high-power downlight optical module system that achieves uniform transition of direct illumination spotlight beams. By combining an aluminum-coated reflector and a Fresnel lens in the optical module, it effectively controls both small-angle and large-angle light emitted from the light source, resulting in a low-glare, uniformly transitioning spotlight. Furthermore, it increases the distance between the light source and the lens's incident surface, reducing the irradiance of the lens's incident surface and thus lowering the lens's temperature, reducing the risk of lens burning, cracking, and yellowing. Therefore, the optical module proposed in this invention provides a solution for downlights that offers excellent spotlight performance and the ability to handle higher power, meeting users' requirements for both excellent spotlight performance and high power output. Attached Figure Description

[0011] Figure 1 This is a top view of the high-power downlight optical module system of this utility model, which achieves uniform transition of direct illumination spot.

[0012] Figure 2 This is a side sectional view of the high-power downlight optical module system of this utility model, which achieves uniform transition of direct illumination spot.

[0013] Figure 3 This is a schematic diagram of the structure of the first reflector in the high-power downlight optical module system of this utility model, which achieves uniform transition of direct illumination spot.

[0014] Figure 4 This is a side sectional view of the second Fresnel lens in the high-power downlight optical module system of this utility model, which achieves uniform transition of direct illumination spot.

[0015] Figure 5 This is an incident view of the second Fresnel lens in the high-power downlight optical module system of this utility model, which achieves uniform transition of direct illumination spot.

[0016] Figure label:

[0017] 1 COB light source

[0018] 2 COB Light Source Mounting Bracket

[0019] 3 First reflector cup

[0020] 4. Second Fresnel Lens

[0021] 11 COB light source emission surface

[0022] 31 First reflector cup light-receiving surface

[0023] 32 First reflector cup light-emitting surface

[0024] 33 First reflector cup mounting clip

[0025] 41. Second Fresnel lens incident surface

[0026] 42. Second Fresnel lens output surface Detailed Implementation

[0027] To more clearly describe the technical content of this utility model, the following description is provided in conjunction with specific embodiments.

[0028] The present invention relates to a high-power downlight optical module system for achieving uniform transition of direct illumination spotlight, comprising a first reflector and a second Fresnel lens arranged sequentially along the light emission direction of the light source. The light inlet of the first reflector is in close contact with the COB light source, and the second Fresnel lens is positioned at the light outlet of the first reflector.

[0029] In a preferred embodiment of the present invention, the light-incident surface of the second Fresnel lens is provided with a microstructure array and an etched texture, and the light-exit surface is provided with a Fresnel gear.

[0030] In a preferred embodiment of this utility model, the system includes multiple second Fresnel lenses with different focal lengths. The system includes a COB light source 1, a COB light source mounting bracket 2, a first reflector 3, and a second Fresnel lens 4. The COB light source 1 is mounted on the COB light source mounting bracket 2, and the first reflector 3 is also mounted on the COB light source mounting bracket 2. The first reflector 3 has a first reflector light-incident surface 31 and a first reflector light-exit surface 32. The first reflector light-incident surface 31 is closely fitted to the COB light source 1, and the second Fresnel lens 4 is disposed at the first reflector light-exit surface 32.

[0031] In a preferred embodiment of the present invention, the second Fresnel lens 4 has a second Fresnel lens light-incident surface 41 and a second Fresnel lens light-exit surface 42. The second Fresnel lens light-incident surface 41 is located on the side close to the first reflector cup 3. The second Fresnel lens light-incident surface 41 is provided with a microstructure array and etching, and the second Fresnel lens light-exit surface 42 is provided with Fresnel gears.

[0032] In a preferred embodiment of the present invention, the system includes a plurality of second Fresnel lenses, the plurality of second Fresnel lenses having different focal lengths.

[0033] In a preferred embodiment of this invention, the first reflector further includes a mounting clip 33, which is disposed at the edge of the light-emitting surface 32 of the first reflector. The second Fresnel lens 4 is mounted on the mounting clip 33 of the first reflector 3. In a preferred embodiment of this invention, the beam angle of the first reflector is 70±5°.

[0034] In a specific embodiment of this utility model, a high-power downlight optical module with uniform direct illumination spot transition is provided. The optical module includes a first reflector and a second Fresnel lens arranged sequentially along the light emission direction of the light source. The light inlet of the first reflector is closely attached to the COB light source and is made of PC with vacuum aluminum plating. The second Fresnel lens is located at the light outlet of the first reflector and is made of PC or PMMA. The light inlet surface of the second Fresnel lens has a microstructure array and etching, and the light outlet surface is a Fresnel gear.

[0035] COB light source 1 is mounted on COB light source mounting bracket 2, first reflector 3 is also mounted on COB light source mounting bracket 2, and second Fresnel lens 4 is mounted on the mounting clip of first reflector 3.

[0036] Based on the principle of reflection, the first reflector cup controls the beam angle at 70±5°.

[0037] Based on the principle of refraction, the second Fresnel lens further controls the light reflected by the first reflector, and refracts and controls the light emitted directly from the light source without being reflected by the first reflector. By setting different focal lengths for the second Fresnel lens, the beam angle of the final emitted light is controlled at 15±3°, 24±3°, 36±3° and 60±5° respectively, thereby reducing the large spot and high glare caused by the uncontrolled small-angle light from the individual reflector, and achieving the goal of well controlling both large-angle and small-angle light from the light source.

[0038] like Figure 2As shown, according to the first law of illuminance, the irradiance received by the second Fresnel lens is inversely proportional to the square of the distance. In the light source module proposed in this invention, the distance d between the light-incident surface of the second Fresnel lens and the light source is approximately twice the distance d between the light-incident surface of the traditional TIR lens and the light source. Therefore, the irradiance received by the light-incident surface of the second Fresnel lens is approximately one-quarter of the irradiance received by the light-incident surface of the traditional TIR lens. Consequently, the temperature of the light-incident surface of the second Fresnel lens in the light source module proposed in this invention is approximately one-quarter of the temperature of the light-incident surface of the traditional TIR lens. The long-term operating temperature of conventional PC is 110℃, and the long-term operating temperature of conventional PMMA is 70℃. Calculations show that, when using PMMA material with lower temperature resistance, the optical module of this invention can carry more than twice the power of a COB light source compared to a traditional PC TIR lens.

[0039] This invention provides a high-power downlight optical module with uniform direct illumination spot transition. By using the same first reflector and replacing the second Fresnel lens with different focal lengths, it is possible to achieve beam angles of 15±3°, 24±3°, 36±3°, and 60±5° with uniform direct illumination spot transition. At the same time, it solves the problem of poor heat resistance of TIR lenses in high-power downlight applications. The optical module described in this invention can handle more than twice the light source power of traditional TIR lenses.

[0040] For the specific implementation scheme of this embodiment, please refer to the relevant descriptions in the above embodiments, which will not be repeated here.

[0041] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0042] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means at least two.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] This invention relates to a high-power downlight optical module system that achieves uniform transition of direct illumination spotlight beams. By combining an aluminum-coated reflector and a Fresnel lens in the optical module, it effectively controls both small-angle and large-angle light emitted from the light source, resulting in a low-glare, uniformly transitioning spotlight. Furthermore, it increases the distance between the light source and the lens's incident surface, reducing the irradiance of the lens's incident surface and thus lowering the lens's temperature, reducing the risk of lens burning, cracking, and yellowing. Therefore, the optical module proposed in this invention provides a solution for downlights that offers excellent spotlight performance and the ability to handle higher power, meeting users' requirements for both excellent spotlight performance and high power output.

[0045] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive.

Claims

1. A high-power downlight optical module system for achieving uniform transition of direct illumination spotlight, characterized in that, The system includes a COB light source, a COB light source mounting bracket, a first reflector, and a second Fresnel lens. The COB light source is mounted on the COB light source mounting bracket, and the first reflector is also mounted on the COB light source mounting bracket. The first reflector has a first light-incident surface and a first light-exit surface. The first light-incident surface of the first reflector is closely attached to the COB light source, and the second Fresnel lens is disposed at the light-exit surface of the first reflector.

2. The high-power downlight optical module system for achieving uniform transition of direct illumination spotlight according to claim 1, characterized in that, The second Fresnel lens has a second Fresnel lens incident surface and a second Fresnel lens exit surface. The second Fresnel lens incident surface is located on the side closer to the first reflector. The second Fresnel lens incident surface is provided with a microstructure array and etching, and the second Fresnel lens exit surface is provided with Fresnel gears.

3. The high-power downlight optical module system for achieving uniform transition of direct illumination spotlight according to claim 1, characterized in that, The system includes multiple second Fresnel lenses, each with a different focal length.

4. The high-power downlight optical module system for achieving uniform transition of direct illumination spotlight according to claim 1, characterized in that, The first reflector also includes a mounting clip, which is located at the edge of the light-emitting surface of the first reflector, and the second Fresnel lens is mounted on the mounting clip of the first reflector.

5. The high-power downlight optical module system for achieving uniform transition of direct illumination spotlight according to claim 1, characterized in that, The beam angle of the first reflector is 70±5°.

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