Heat-melting-resistant lens
By fitting the PC optical components with high-temperature-resistant glass optical components, the problem of yellowing and light transmittance decrease in PC lenses during long-term use is solved, and an LED concentrator lens with high temperature stability and durability is achieved.
Patent Information
- Application Number
- CN202421667833.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-15
AI Technical Summary
Existing PC lenses are prone to yellowing after long-term use, and their light transmittance decreases. They are hot melting due to high temperature environments, which cannot meet the needs of high temperature and durability.
Using a fitting structure, the PC optical components are combined with the high-temperature-resistant glass optical components. Through the design of the mounting holes and fitting grooves, as well as the convex and concave coordination of the annular radial flange and fitting grooves, the fixation of the glass optical components and the peripheral arrangement of the PC optical components are realized.
It effectively avoids the yellowing and light transmittance problems of PC lenses during long-term use. At the same time, it utilizes the high temperature stability of glass optical components to prevent hot melting and improves the durability and performance of the lens.
Smart Images
Figure CN222773101U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of optical lenses, and in particular relates to a heat-resistant melt lens. Background Art
[0002] The power of high-power commercial LED spotlights in the North American market is generally in the range of 20W-50W. They are used in high-space places such as hotel lobbies, congress centers, and commercial plazas. The lights are turned on for a long time. Some congress centers and government agencies will turn on the lights 24 hours a day and never turn off the lights for a long time. The light output angle of commercial spotlights in such places is small, usually in the range of 24-60°. The design structure of the spotlight is usually that the light source is attached to the radiator, there is a lens directly in front of the light source, and then a reflector is fixed on the radiator.
[0003] LEDs usually use COB packaged light sources. The luminous area of COB light sources is very small, which is very suitable for designing spotlights with small light output angles. Lenses generally use PC lenses instead of PMMA and glass lenses, because PMMA materials have lower heat resistance than PC and are easily melted by heat. Due to process reasons, the dimensional accuracy of glass lenses is not high, which affects the accuracy of the beam angle. At the same time, complex optical structures are difficult to achieve and sharp-angle structures cannot be made. However, PC lenses also have their own defects. The pain point of current market customer complaints is: PC lenses become more and more seriously yellowed with long-term use, and the light transmittance will also decrease. As more and more light cannot penetrate the lens, it will be continuously absorbed by the lens surface and converted into heat energy. In addition, some places of use do not turn off the lights for a long time and cannot be cooled, which eventually causes the center of the lens to melt by heat. Utility Model Content
[0004] The utility model aims to provide a heat-melt-resistant lens to meet the requirements of high light transmittance, high temperature resistance, yellowing resistance and heat-melt resistance.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a heat-resistant melt lens, comprising a PC optical component and a glass optical component embedded together, a mounting hole is arranged at the center of the PC optical component, a fitting groove is arranged on the hole wall of the mounting hole, a radial flange is arranged on the circumferential surface of the glass optical component, the glass optical component is installed in the mounting hole, and the radial flange is connected with the fitting groove in a convex-concave manner.
[0006] The engaging groove is an annular groove extending along the circumferential direction of the mounting hole.
[0007] The engaging grooves are a plurality of grooves spaced apart and distributed along the circumferential direction of the mounting hole, and the plurality of grooves are located on the same circumference.
[0008] The radial flange is an annular flange extending along the circumferential direction of the glass optical component.
[0009] The radial flange is composed of a plurality of radial protrusions which are spaced apart and distributed along the circumferential direction of the glass optical component.
[0010] The PC optical component is provided with a plurality of annular sharp corner structures, and the plurality of sharp corner structures are arranged in concentric circles around the glass optical component.
[0011] The beneficial effects of the utility model are as follows: the utility model embeds a high temperature resistant and heat-melting resistant glass optical component in the center of the PC optical component, and the maximum light intensity of the LED light is concentrated on the glass optical component, so that the yellowing, light transmittance reduction, heat melting and other problems caused by long-term use can be avoided; at the same time, the PC optical component is used as a peripheral optical component, and mold injection molding can be used, with high molding precision, and it is easier to control the angle of light, so it is mainly used in the lens to form the optical angle of the lens. Therefore, the utility model fully utilizes the advantages of PC material and glass material, avoids the disadvantages of the two materials, and takes advantage of their strengths to avoid their weaknesses, thereby obtaining an excellent and durable LED focusing lens that meets the use scenario requirements of high-power LED commercial spotlights. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model;
[0013] Figure 2 It is the structural explosion diagram of the utility model;
[0014] Figure 3 It is a cross-sectional view of the lens of the utility model;
[0015] Markings in the figure: 1, PC optical component, 101, fitting groove, 102, mounting hole, 103, sharp angle structure, 2, glass optical component, 201, annular radial flange. DETAILED DESCRIPTION
[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention in any way.
[0017] See attached Figure 1 , 2 As shown, a heat-melt-resistant lens includes a PC optical component 1 and a glass optical component 2. A mounting hole 102 is provided at the center of the PC optical component 1, and an engaging groove 101 is provided on the hole wall of the mounting hole 102 along the circumferential direction; an annular radial flange 201 is provided on the circumference of the glass optical component 2 along its circumference, the glass optical component 2 is installed in the mounting hole 102, and the annular radial flange 201 is clamped in the engaging groove 101, so as to realize the installation and fixation of the glass optical component 2 and the PC optical component 1.
[0018] The PC optical component 1 is provided with a plurality of annular sharp corner structures 103 , and the plurality of sharp corner structures 103 are arranged in concentric circles around the glass optical component 2 .
[0019] The PC optical component 1 is made of PC material with high light transmittance, located at the periphery of the lens, and is mainly used to form the angle of the lens. The use of PC material makes the injection molding size more precise, easy to form a sharp-angle structure, and easier to control the angle deviation of light. The glass optical component 2 is made of high borosilicate glass material. The glass is resistant to high temperatures of up to 300°C and can fully support the irradiation of LED light energy without melting. Because the LED light intensity of the lamp is the largest in the middle of the lens, the glass optical component 2 is set in the middle of the lens.
[0020] Preferably, the glass optical component 2 and the PC optical component 1 have the same light transmittance.
[0021] The utility model adopts an injection molding process to realize the combination and fixation of the glass optical component 2 and the PC optical component 1. First, the glass optical component 2 is placed in a mold, then the mold is closed to clamp the glass optical component 1, and finally the PC optical component 1 is cast into the mold.
[0022] In order to prevent the glass optical component 1 from being crushed when the mold is closed, a high-temperature resistant soft material is installed on the movable mold of the mold.
[0023] In other embodiments, a plurality of radial protrusions spaced apart along the circumference of the glass optical component 2 may be arranged, and the plurality of radial protrusions may be stuck in the fitting groove of the PC optical component 1 to achieve the fitting and fixation of the glass optical component 2 on the PC optical component 1 .
[0024] Alternatively, a plurality of radial protrusions are arranged at intervals along the circumference of the glass optical component 2, and a plurality of grooves are arranged on the wall of the mounting hole 102 of the PC optical component 1. The grooves and the radial protrusions form a one-to-one convex-concave fit, and the glass optical component 2 can also be embedded in the PC optical component 1.
[0025] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can be modified or replaced by equivalents with reference to the above embodiments. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the pending claims.
Claims
1. A heat-resistant melt lens, characterized in that: It comprises a PC optical component and a glass optical component which are embedded together, wherein a mounting hole is arranged at the center of the PC optical component, a fitting groove is arranged on the hole wall of the mounting hole, a radial flange is arranged on the circumferential surface of the glass optical component, the glass optical component is installed in the mounting hole, and the radial flange is connected with the fitting groove in a convex-concave manner.
2. The heat-resistant melt lens according to claim 1, characterized in that: The engaging groove is an annular groove extending along the circumferential direction of the mounting hole.
3. The heat-resistant melt lens according to claim 1, characterized in that: The engaging grooves are a plurality of grooves spaced apart and distributed along the circumferential direction of the mounting hole, and the plurality of grooves are located on the same circumference.
4. The heat-resistant melt lens according to claim 1, characterized in that: The radial flange is an annular flange extending along the circumferential direction of the glass optical component.
5. The heat-resistant melt lens according to claim 1, characterized in that: The radial flange is composed of a plurality of radial protrusions which are spaced apart and distributed along the circumferential direction of the glass optical component.
6. The heat-resistant melt lens according to claim 1, characterized in that: The PC optical component is provided with a plurality of annular sharp corner structures, and the plurality of sharp corner structures are arranged in concentric circles around the glass optical component.