Special-shaped lens and high power LED road lamp shade

A special-shaped lens and curvature technology, applied in the direction of lens, lampshade, circuit, etc., can solve the problems of uneven brightness, unsuitable hemispherical light source, insufficient light brightness, etc., to improve the divergence of light, good light conversion effect, and prevent light The effect of leakage

Inactive Publication Date: 2008-12-17

孙敬玺

2 Cites 19 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0002] At present, the lampshades of high-power LED street lamps mainly have two structures, one is made of flat or curved glass, this kind of lampshade is due to the relatively large divergence angle of the LED light-emitting tube (generally 140 degrees), and the light spots emitted are relatively scattered, making large The brightness of light illuminated by high-power LED street lights on the road is not enough. The other is that a convex lens is placed under each LED light-emitting tube. This lampshade is limited by the divergence angle of the convex lens, and the light spot formed is relatively small and circular. The light spot, the place where it is illuminated is relatively bright, and the place that is not illuminated is no light, the brightness is very uneven, and its structure is extremely complicated; in order to facilitate the driving of vehicles, there is a need on the market for a light-gathering effect and a large-scale li...

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Abstract

The invention relates to a lens, in particular to a special shape lens and a large-power LED street lampshade. The special shape lens includes a reversed semi-ellipsoidal-like stage, a hollow spherical plane with a radius R arranged at the center of the lower plane of the reversed semi-ellipsoidal-like stage, and a hyperboloid-like surface with a certain thickness arranged on the upper part of the reversed semi-ellipsoidal-like stage in a position corresponding to the lower plane, wherein the outer concave surface of the hyperboloid-like surface is connected with the reversed semi-ellipsoidal-like stage, and the inner convex surface of the hyperboloid-like surface includes a convex surface having a planar injection similar to rectangle; four wedge-shaped bumps are symmetrically arranged on the side faces of the reversed semi-ellipsoidal-like stage; and annular inner-spherical incident light grooves with unequal cross sections are arranged on the hollow spherical plane. The low-power LED street lampshade includes a shade cover and frames arranged at the periphery, wherein the shade body is composed of a certain number of the special shape lenses arranged in matrix according to a certain rule. The invention provides the special shape lens for converting a semi-spherical light source into a rectangular area light source and the large-power LED street lampshade.

Application Domain

Planar light sourcesMechanical apparatus +8

Technology Topic

Abnormal shapedLight source +6

Image

Examples

Experimental program(1)

Example Embodiment

[0043] Example one: see Figure 1~Figure 24 In the figure, the special-shaped lens contains an inverted approximate semi-ellipsoidal table 3, in the center of the lower plane of the inverted approximate semi-ellipsoidal table 3, a hollow spherical surface 5 with a radius of R is set, and the upper part of the inverted approximate semi-ellipsoidal table 3 and below it There is an approximate hyperboloid with a certain thickness on the corresponding position of the plane. The outer concave surface 11 of the approximate hyperboloid is connected with the inverted approximate semi-ellipsoid table 3, the projection of the approximate hyperboloid is square, and the inner convex surface of the approximate hyperboloid 1 is in the middle. Contains a convex surface 2 whose plane projection is approximately rectangular, and the four corners of the convex surface 2 are arc transitions.

[0044] Four wedge-shaped protrusions 4 are symmetrically provided on the side surface of the inverted semi-ellipsoidal table 3, and the hollow spherical surface 5 is provided with an annular inner spherical incident light groove 6 of unequal cross-section.

[0045] The direction of the long side of the convex surface 2 is consistent with the direction of the generatrix of the approximate hyperboloid. The depth of the annular inner spherical incident light groove 6 on the long side of the convex surface 2 is greater than its depth on the short side of the convex surface 2. Four wedges The positions of the protrusions 4 respectively correspond to the positions of the four corners of the convex surface 2, and the hollow spherical surface 5 is a hollow hemispherical surface.

[0046] The material of the special-shaped lens is a transparent material.

[0047] The curvature of the side surface of the inverted semi-ellipsoidal table 3 is 0.01-0.15, and the curvature of the convex surface 2 is 0.01-0.23. The material of the shaped lens is transparent plastic, and the shaped lens is injection molded from highly transparent plastic.

[0048] by Figure 10 ~ Figure 17 The schematic diagram of the light path of the hemispherical light source produced by the LED light-emitting tube 7 on the cross-sectional planes AA, BB and CC of the special-shaped lens. It can be seen that the light of the hemispherical light source is well refracted and reflected by the special-shaped lens and then projected on In a rectangular area; Figure 18 Shows a schematic diagram of the light path of the hemispherical light source on the A-A cross-sectional plane when there is no annular inner ball incident on the light groove 6, which is similar to Picture 11 In comparison, it can be seen that the light emitted from the special-shaped lens is relatively divergent, which illustrates the improvement effect of the annular inner ball incident light groove 6 on the light conversion.

[0049] The high-power LED street lamp cover contains a cover body and a frame 9 arranged around it. The cover body is composed of 27 special-shaped lenses 8 which are connected to each other and arranged in a 3*9 rectangular array.

[0050]The adjacent special-shaped lens 8 has an integrated structure, and the special-shaped lens 8 and the frame 9 have an integrated structure. The entire high-power LED street lamp shade is made of high-transparent plastic injection molding. The frame 9 is provided with 8 positioning posts 10.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Good conversion
Ingenious design

Direct Synthesis of a Microporous Aluminosilicate Material Having an AFX Structure and Comprising Copper, and Use of said Material

ActiveUS20200156949A1Good conversionImprove propertyMolecular sieve catalystsExhaust apparatusCopperAqueous medium

Owner:INST FR DU PETROLE

Voice conversion model training method and device

PendingCN113763987AGuaranteed accuracyGood conversionSpeech recognitionPhysicsBiology

Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI

Special-shaped lens and high power LED road lamp shade

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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