LED lighting equipment and lens thereof
By combining convex lenses and Fresnel lenses in LED lighting equipment, the problems of darkening and blurring at corners are solved, achieving better focusing effects and reducing costs.
Patent Information
- Application Number
- CN202422789552.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-15
AI Technical Summary
When existing LED lighting equipment uses ordinary convex lenses, there are problems such as dark corners and blur, and the cost is high.
A design combining a convex lens and a Fresnel lens is adopted, and a plurality of sawtooth grooves are arranged on the outside of the convex lens to form a Fresnel lens. The design of the sawtooth grooves improves the focusing effect and reduces the production cost.
The light focusing effect of the lens is improved, the darkening and blurring of corners are avoided, and the production cost is reduced.
Smart Images
Figure CN223388454U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of LED lighting equipment, in particular to an LED lighting equipment and a lens thereof. Background Art
[0002] Fresnel lenses are typically made of injection-molded polyolefin material. One surface is smooth, while the other is inscribed with concentric circles from small to large. Existing LED lighting systems, however, mostly use convex lenses. Conventional convex lenses can cause darkening and blurring of the edges and corners. This is because light refraction occurs only at the interface between media, and thick convex lenses attenuate the light traveling in straight lines through the glass. Utility Model Content
[0003] In order to solve the technical problems raised in the above background technology, the utility model provides an LED lighting device and a lens thereof.
[0004] The utility model provides a lens, comprising a convex lens located in the middle and a plurality of sawtooth grooves arranged around the convex lens, wherein the plurality of sawtooth grooves form a Fresnel lens, and the thickness of the convex lens is greater than that of the Fresnel lens.
[0005] Furthermore, the bottoms of the sawtooth grooves of the Fresnel lens are all on the same horizontal line, and the depth of the sawtooth grooves gradually decreases from the edge of the Fresnel lens toward the convex lens.
[0006] Furthermore, the highest point of the sawtooth groove of the Fresnel lens gradually decreases from the edge of the Fresnel lens toward the convex lens.
[0007] Furthermore, the diameter of the convex lens does not exceed 13 mm.
[0008] Furthermore, the outermost diameter of the Fresnel lens does not exceed 31.8 mm.
[0009] On the other hand, the present invention also provides an LED lighting device, comprising the lens.
[0010] By adopting the above technical solution, the present invention has at least the following beneficial effects: the present invention arranges a Fresnel lens on the outside of a convex lens, and through the combination of the convex lens and the Fresnel lens, the focusing effect of the lens can be further improved. At the same time, the Fresnel lens is equivalent to a convex lens for infrared and visible light, which can increase the focusing effect of the convex lens. The cost is also much lower than that of an ordinary convex lens, which is conducive to reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a front view of an embodiment of the lens of the present invention.
[0012] Figure 2 This is a cross-sectional view of an embodiment of the lens of the present invention. DETAILED DESCRIPTION
[0013] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, and should not be understood as limiting the present invention. Moreover, the features of the embodiments of the present invention may be combined with each other unless there is a conflict.
[0014] like Figure 1-Figure 2 As shown, the utility model provides a lens, including a convex lens 1 located in the middle and a plurality of sawtooth grooves arranged around the convex lens 1, wherein the plurality of sawtooth grooves form a Fresnel lens 2, and the thickness of the convex lens 1 is greater than the thickness of the Fresnel lens 2.
[0015] The utility model arranges the Fresnel lens 2 on the outer side of the convex lens 1. Through the combination of the convex lens 1 and the Fresnel lens 2, the focusing effect of the lens can be further improved, and the phenomenon of darkening and blurring of corners can be avoided. At the same time, the Fresnel lens 2 is equivalent to the convex lens 1 for infrared and visible light, which can increase the focusing effect of the convex lens 1. The cost is much lower than that of the ordinary convex lens 1, which is conducive to reducing production costs.
[0016] In addition, the convex lens 1 used in the middle and having a thickness greater than that of the Fresnel lens 2 can make the injection molding production more convenient and quick, effectively improve the production efficiency, and also effectively improve the appearance of the lens.
[0017] In an optional embodiment, the bottoms of the sawtooth grooves of the Fresnel lens 2 are all on the same horizontal line, and the depth of the sawtooth grooves gradually decreases from the edge of the Fresnel lens 2 toward the convex lens 1. Alternatively, the highest point of the sawtooth grooves of the Fresnel lens 2 gradually decreases from the edge of the Fresnel lens 2 toward the convex lens 1. In this embodiment, the tilted arrangement can effectively enhance the focusing effect of the lens.
[0018] In an optional embodiment, the diameter of the convex lens 1 does not exceed 13 mm. The outermost diameter of the Fresnel lens 2 does not exceed 31.8 mm. Specifically, the convex lens 1 and the Fresnel lens 2 may also be designed and used with other parameters.
[0019] On the other hand, the present invention also provides an LED lighting device, comprising the lens.
[0020] The utility model arranges the Fresnel lens 2 on the outer side of the convex lens 1. Through the combination of the convex lens 1 and the Fresnel lens 2, the focusing effect of the lens can be further improved. At the same time, the Fresnel lens 2 is equivalent to the convex lens 1 for infrared and visible light, which can increase the focusing effect of the convex lens 1. The cost is much lower than that of the ordinary convex lens 1, which is conducive to reducing production costs.
[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these examples without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A lens, characterized in that: The invention comprises a convex lens in the middle and a plurality of sawtooth grooves arranged around the convex lens, wherein the plurality of sawtooth grooves form a Fresnel lens, and the thickness of the convex lens is greater than that of the Fresnel lens.
2. The lens according to claim 1, wherein: The bottoms of the sawtooth grooves of the Fresnel lens are all on the same horizontal line, and the depth of the sawtooth grooves gradually decreases from the edge of the Fresnel lens toward the convex lens.
3. The lens according to claim 1, wherein: The highest point of the sawtooth groove of the Fresnel lens gradually decreases from the edge of the Fresnel lens toward the convex lens.
4. The lens according to claim 1, wherein: The diameter of the convex lens does not exceed 13 mm.
5. The lens according to claim 1, wherein: The outermost diameter of the Fresnel lens does not exceed 31.8 mm.
6. An LED lighting device, characterized in that: The lens comprises the lens according to any one of claims 1 to 5.