Micro-lens array for projection television

Abstract

The utility model relates to the technical field of projection televisions, in particular to a micro-lens array for a projection television, which comprises a micro-lens array and a lens substrate, the micro-lens array is arranged on the lens substrate, the micro-lens array comprises micro-lenses distributed on the surface of the micro-lens array at equal intervals, a plurality of groups of radiating holes are uniformly distributed around the micro-lenses, and the radiating holes are communicated with the micro-lenses. Heat dissipation grooves are formed in the two sides of the micro lens. According to the micro-lens array for the projection television, the micro-lenses are arranged, the micro-lens array is composed of the multiple micro-lenses, the size of each micro-lens is accurately calculated, the micro-lenses are arranged in a rectangular mode and sequentially arranged on the lens substrate, a linear micro-channel is formed in the mounting plate, and multiple sets of heat dissipation holes and heat dissipation grooves are formed in the peripheries of the micro-lenses. The surface temperature of the lens substrate is maintained in a stable range, so that the long-term use of the projection television is ensured, the energy consumption of cooling equipment is reduced, a good energy-saving effect is achieved, and the problem of over-high working temperature is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of projection televisions, in particular to a micro lens array for projection televisions. Background Art

[0002] Microlens arrays are widely used optical devices in the optical field. Composed of multiple microlenses, they precisely focus and control light, enabling efficient image projection. Through microlens arrays, projection televisions can significantly improve light efficiency, resulting in high-definition, color-accurate images on larger projection screens. With the widespread adoption of 4K and 8K ultra-high-definition display technologies, microlens arrays have become a crucial component in achieving these high-resolution image quality.

[0003] However, microlens arrays tend to generate significant heat during operation. Traditional microlens arrays, due to their high integration density and compact structure, result in poor airflow and uneven heat dissipation. Over extended periods of operation, this heat is difficult to dissipate effectively, causing the surface temperature of the lens substrate to gradually rise. As the temperature rises, hot spots may form on the lens surface, affecting projection image quality. This is particularly true in high-brightness scenes, where light reflection efficiency decreases, resulting in blurry or color-distorted images.

[0004] Therefore, there is an urgent need for a micro-lens array for projection televisions that can solve the technical defects mentioned in the above-mentioned technologies. Utility Model Content

[0005] The purpose of the present invention is to provide a micro-lens array for projection televisions to solve the problem of excessively high operating temperature mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a microlens array for a projection television, comprising a microlens array and a lens substrate, wherein the lens substrate is provided with a microlens array, the microlens array including microlenses distributed at equal intervals on its surface, multiple groups of heat dissipation holes evenly distributed around the microlenses, heat dissipation grooves provided on both sides of the microlenses, a mounting plate provided below the lens substrate, linear microchannels provided within the mounting plate, and a thermal management coating coated on the bottom surface of the microlenses.

[0007] Preferably, the length of the heat dissipation slot is the same as the width of the linear microchannel, and the size of the lens substrate matches that of the mounting plate.

[0008] Preferably, a liquid crystal dimming layer is provided on the surface of the microlens, and a carbon nanotube coating is provided on the outer edge of the liquid crystal dimming layer.

[0009] Preferably, a support frame is movably connected to the middle of the mounting plate, connecting shafts are fixedly connected to both sides of the support frame, an electric drive module is installed on one side of the middle of the mounting plate, and the electric drive module is fixedly connected to the support frame.

[0010] Preferably, foot grooves are provided on both sides of the lens substrate, a rotating shaft is fixedly connected in the foot groove, mounting plates are welded on both sides of the top of the mounting plate, one side of the rotating shaft is movably connected to the inner wall of the mounting plate, and a torsion spring is installed on the outside of the rotating shaft.

[0011] Preferably, a limiting plate is welded to the side of the rotating shaft away from the mounting plate, and the limiting plate does not contact the lens substrate.

[0012] Preferably, a positioning foot is provided on the top edge of the lens substrate, and the positioning foot is an inwardly concave straight groove.

[0013] Preferably, a light guide plate is bonded to the positioning pins, and the light guide plate is an arc-shaped cover covering the lens substrate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the micro-lens array for projection television not only ensures the operating temperature of the projection television, realizes self-dimming, ensures clear and accurate images without distortion or color shift, but also enables the replacement of appropriate light guide plates according to different scenes;

[0015] (1) The microlens array is composed of a plurality of microlenses, linear microchannels, heat dissipation holes and heat dissipation slots. The size of each microlens is precisely calculated and arranged in a rectangular arrangement, which is arranged in sequence on the lens substrate. A linear microchannel is provided in the mounting plate, and a plurality of heat dissipation holes and heat dissipation slots are provided around the microlenses to facilitate air flow, improve heat dissipation efficiency, and remove excess heat. The carbon nanotube coating can improve heat dissipation efficiency and ensure that the surface temperature of the lens substrate is maintained within a stable range during long-term use. This not only ensures the long-term use of the projection TV, but also reduces the energy consumption of the cooling equipment, thus achieving good energy-saving effects.

[0016] (2) By providing a carbon nanotube coating, a liquid crystal dimming layer, an electric drive module, a support frame, and a connecting shaft, the distance between each microlens and the adjacent microlens is very small, ensuring that light can form a high-precision projection effect through the microlens array. The surface of each microlens is coated with a liquid crystal dimming layer, and the edge is also provided with a carbon nanotube coating for efficiently reflecting the light of the projection light source, effectively improving the reflectivity of the light and reducing light loss. When the electric drive module drives the support frame to rotate, the connecting shaft drives the overall rotation angle of the lens substrate, and the rotation stability of the lens substrate is ensured by the rotating shaft, which can accurately control the reflection angle of each microlens in real time, ensuring that the picture is clear and accurate, without distortion or color shift, and can present high-definition images on a large-size screen;

[0017] (3) By providing a light guide plate and a lens substrate, the light guide plate on the lens substrate can be easily disassembled and replaced. When the light guide plate is damaged or requires maintenance, the user can quickly replace the light guide plate. The appropriate light guide plate can be replaced according to different scenarios to optimize the projection effect. This convenient disassembly and assembly function enables the projection TV to continuously obtain a high-quality picture experience in various application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the top view of the micro lens array structure of the present invention;

[0019] Figure 2 This is a front view structural diagram of the utility model;

[0020] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of the local section at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the layered structure of the microlens of the present invention.

[0022] In the figure: 1. Microlens; 2. Liquid crystal dimming layer; 3. Carbon nanotube coating; 4. Heat dissipation hole; 5. Heat dissipation groove; 6. Positioning foot; 7. Lens substrate; 8. Microlens array; 9. Rotating shaft; 10. Torsion spring; 11. Mounting plate; 12. Mounting plate; 13. Linear microchannel; 14. Electric drive module; 15. Support frame; 16. Connecting shaft; 17. Light guide plate; 18. Limiting plate; 19. Foot slot; 20. Thermal management coating. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4The present invention provides an embodiment of a microlens array for a projection television, comprising a microlens array 8 and a lens substrate 7. The lens substrate 7 is provided with the microlens array 8, and the microlens array 8 includes microlenses 1 distributed on its surface at equal intervals. A plurality of heat dissipation holes 4 are evenly distributed around the microlenses 1. Heat dissipation grooves 5 are provided on both sides of the microlenses 1. A mounting plate 12 is provided below the lens substrate 7, and a linear microchannel 13 is provided in the mounting plate 12. A thermal management coating 20 is coated on the bottom surface of the microlens 1. The length of the heat dissipation groove 5 is the same as the width of the linear microchannel 13. The size of the lens substrate 7 matches the mounting plate 12.

[0025] Specifically, if Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the microlens array 8 is composed of multiple microlenses 1. The size of each microlens 1 is precisely calculated and arranged in a rectangular array, which is arranged in sequence on the lens substrate 7. A linear microchannel 13 is provided in the mounting plate 12. Multiple groups of heat dissipation holes 4 and heat dissipation grooves 5 are provided around the microlenses 1 to facilitate air flow, improve heat dissipation efficiency, and remove excess heat. The carbon nanotube coating 3 can improve heat dissipation efficiency and ensure that the surface temperature of the lens substrate 7 is maintained within a stable range during long-term use.

[0026] A liquid crystal dimming layer 2 is provided above the surface of the microlens 1, and a carbon nanotube coating 3 is provided on the outer edge of the liquid crystal dimming layer 2. A support frame 15 is movably connected to the middle position of the mounting plate 12, and connecting shafts 16 are fixedly connected to both sides of the support frame 15. An electric drive module 14 is installed on one side of the middle position of the mounting plate 12, and the electric drive module 14 is fixedly connected to the support frame 15. Foot grooves 19 are provided on both sides of the lens substrate 7, and a rotating shaft 9 is fixedly connected in the foot groove 19. Mounting plates 11 are welded to both sides of the top of the mounting plate 12, and one side of the rotating shaft 9 is movably connected to the inner wall of the mounting plate 11. A torsion spring 10 is installed on the outside of the rotating shaft 9. A limit plate 18 is welded to the side of the rotating shaft 9 away from the mounting plate 11, and the limit plate 18 does not contact the lens substrate 7.

[0027] Specifically, if Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the distance between each microlens 1 and the adjacent microlens 1 is very small, ensuring that light can pass through the microlens array 1 to form a high-precision projection effect. The surface of each microlens 1 is coated with a liquid crystal dimming layer 2, and the edge is also provided with a carbon nanotube coating 3, which is used to efficiently reflect the light of the projection light source, effectively improving the reflectivity of the light and reducing light loss. When the electric drive module 14 drives the support frame 15 to rotate, the connecting shaft 16 drives the overall rotation angle of the lens substrate 7, and the rotation stability of the lens substrate 7 is ensured by the rotating shaft 9, which can accurately control the reflection angle of each microlens 1 in real time.

[0028] A positioning foot 6 is provided on the top edge of the lens substrate 7. The positioning foot 6 is an inwardly concave straight groove. A light guide plate 17 is bonded to the positioning foot 6. The light guide plate 17 is an arc-shaped cover that covers the lens substrate 7.

[0029] Specifically, if Figure 1 、 Figure 2 and Figure 4 As shown, the light guide plate 17 on the lens substrate 7 can be easily disassembled and replaced. When the light guide plate 17 is damaged or needs maintenance, the user can quickly replace the light guide plate 17. The appropriate light guide plate 17 can be replaced according to different scenarios to optimize the projection effect.

[0030] Working principle: The microlens array 8 is composed of multiple microlenses 1. The size of each microlens 1 is precisely calculated and arranged in a rectangular arrangement. They are arranged in sequence on the lens substrate 7. A mounting plate 12 is provided below the lens substrate 7. A linear microchannel 13 is provided in the mounting plate 12. Multiple groups of heat dissipation holes 4 and heat dissipation grooves 5 are provided around the microlens 1 to facilitate air flow, improve heat dissipation efficiency, and remove excess heat. The carbon nanotube coating 3 can improve heat dissipation efficiency and ensure that the surface temperature of the lens substrate 7 is maintained within a stable range during long-term use. The distance between each microlens 1 and the adjacent microlens 1 is very small, ensuring that light can pass through the microlens 1 array to form a high-precision projection effect. The surface of each microlens 1 is The surface is coated with a liquid crystal dimming layer 2, and the edge is also provided with a carbon nanotube coating 3, which is used to efficiently reflect the light of the projection light source, effectively improve the reflectivity of the light, and reduce light loss. When the electric drive module 14 drives the support frame 15 to rotate, the connecting shaft 16 drives the overall rotation angle of the lens substrate 7, and the rotation stability of the lens substrate 7 is ensured by the rotating shaft 9. It can accurately control the reflection angle of each microlens 1 in real time to ensure that the picture is clear and accurate without distortion or color shift. The light guide plate 17 on the lens substrate 7 can be easily removed and replaced. When the light guide plate 17 is damaged or needs maintenance, the user can quickly replace the light guide plate 17. The appropriate light guide plate 17 can be replaced according to different scenes to optimize the projection effect.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A micro-lens array for projection television, comprising a micro-lens array (8) and a lens substrate (7), characterized in that: A micro lens array (8) is provided on the lens substrate (7), the micro lens array (8) comprising micro lenses (1) distributed at equal intervals on its surface, multiple groups of heat dissipation holes (4) are evenly distributed around the micro lenses (1), heat dissipation grooves (5) are provided on both sides of the micro lenses (1), a mounting plate (12) is provided below the lens substrate (7), a linear micro channel (13) is provided in the mounting plate (12), and a thermal management coating (20) is coated on the bottom of the surface of the micro lenses (1).

2. The micro-lens array for projection television according to claim 1, wherein: The length of the heat dissipation groove (5) is the same as the width of the linear microchannel (13), and the size of the lens substrate (7) matches that of the mounting plate (12).

3. The micro-lens array for projection television according to claim 1, wherein: A liquid crystal light-adjusting layer (2) is provided above the surface of the microlens (1), and a carbon nanotube coating (3) is provided on the outer edge of the liquid crystal light-adjusting layer (2).

4. The micro-lens array for projection television according to claim 1, wherein: A support frame (15) is movably connected to the middle position of the mounting plate (12), and connecting shafts (16) are fixedly connected to both sides of the support frame (15). An electric drive module (14) is installed on one side of the middle position of the mounting plate (12), and the electric drive module (14) is fixedly connected to the support frame (15).

5. The micro-lens array for projection television according to claim 1, wherein: Foot grooves (19) are provided on both sides of the lens substrate (7), a rotating shaft (9) is fixedly connected in the foot groove (19), mounting plates (11) are welded to both sides of the top of the mounting plate (12), one side of the rotating shaft (9) is movably connected to the inner wall of the mounting plate (11), and a torsion spring (10) is installed on the outside of the rotating shaft (9).

6. The micro-lens array for projection television according to claim 5, characterized in that: A limiting plate (18) is welded to the side of the rotating shaft (9) away from the mounting plate (11), and the limiting plate (18) does not contact the lens substrate (7).

7. The micro-lens array for projection television according to claim 1, wherein: A positioning foot (6) is provided on the top edge of the lens substrate (7), and the positioning foot (6) is an inwardly concave straight groove.

8. The micro-lens array for projection television according to claim 7, wherein: A light guide plate (17) is bonded to the positioning foot (6), and the light guide plate (17) is an arc-shaped cover body covering the lens substrate (7).

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