Free curved surface lens

A curved lens and free technology, applied in lighting and heating equipment, electrical components, circuits, etc., can solve the problems of not meeting the requirements of light distribution and changing the light distribution

Inactive Publication Date: 2009-05-27
胡晓兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lens generally adopts the convex lens of the traditional concept. These two structures cannot realize diversified light distribution changes, but can only achieve circular range of light concentration and astigmatism, which cannot meet the light distribution requirements required for lighting fixtures for different purposes.

Method used

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  • Free curved surface lens
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1 sees Fig. 1, Fig. 2, image 3 , Figure 4 , Figure 5 .

[0063]A free-form surface lens, which is used for lamps that use high-power LEDs in single-chip packages or multi-chip integrated packages as light sources. LED3 is fixed on the lamp body 1, and free-form surface lenses 21 are located in the direction of LED irradiation; The edge 9, the pressure ring 8 is pressed on the flange 9, and the bolt 6 is fixedly connected with the lamp body 1, and the LED3 is sealed between the lamp body and the free-form surface lens 2; the bolt 7 passes through the bracket 4 and is fixed on the rear side of the lamp body 1 Connection, the bracket 4 is rotationally connected with the lamp body 1; the wire 5 is connected to the terminal on the LED3 through the wire hole on the lamp body from the rear of the lamp body. The structure of the free-form surface lens is that the free-form surface lens 21 is a solid body, the bottom surface is flat, and the shape is circular. Th...

Embodiment 2

[0065] Example 2 see Figure 6 , Figure 7 , Figure 8 middle

[0066] The structure of the free-form surface lens is that the free-form surface lens 22 is a solid body with a flat bottom surface and a circular shape. Other structures are with embodiment 1.

[0067] Such a structure can cause the incident light to be refracted by the lens, and the light in the middle area will be diverged, and the light will be scattered to the periphery, so as to reduce the brightness of the central point, expand the irradiation area, and improve the uniformity of light distribution illuminated by the lamp. The curvature to achieve the preset light distribution effect. It is suitable for indoor and outdoor lighting of squares, roads, tunnels, factory workshops, mining areas, stadiums, theaters, landscapes and other large spaces.

Embodiment 3

[0068] Example 3 see Figure 9 , Figure 10 , Figure 11, Figure 12

[0069] The structure of the free-form surface lens is that the free-form surface lens 23 is a solid body, the bottom surface is flat, and the shape is circular. The light-emitting surface of the free-form surface lens 23 is three protrusions, and the height of the strip-shaped protrusion 231 in the middle is greater than that of the protrusions on both sides. 232 height; the raised parts are connected by a concave arc transition. Other structures are with embodiment 1.

[0070] Such a structure can make the direction of the refracted light in the middle area change smaller than that on the two sides after the incident light is refracted by the lens, and the angle of the refracted light in the direction of the two sides changes greatly. When the light increases, there is no obvious converging effect in the middle area, and the overall irradiation area is oblong, and the uniformity of light distribution in t...

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Abstract

The invention relates to a free toroidal lens arranged in the irradiation direction of the lamp LED which takes the high power LED encapsulated by single-chip or poly-chip as light source. When the LED lights, the light illuminates from the free toroidal lens. The free toroidal lens can alter the irradiation direction by refracting the light from the LED so as to alter the LED lamp irradiation angle, range and light distribution. The preset light distribution effect is achieved after the light emitted from the LED passes through the free toroidal lens based on the refraction action of the free toroidal lens with different preset incident angles, different shapes and curvatures of the light incidence plane and the light emergence plane.

Description

technical field [0001] The invention relates to a free-form surface lens, in particular to a free-form surface lens capable of changing the light distribution of a lamp with a high-power LED as a light source and realizing a preset light distribution effect. Background technique [0002] At present, lamps with high-power LEDs as light sources generally use LEDs to be fixed on heat sinks with heat sinks, and reflectors are used to reflect the light emitted by LEDs to make lamps, or light emitted by LEDs and other point light sources The directionality of light emission is relatively consistent, and the light is relatively concentrated in front of the light emitting surface. Add a lens in the direction of LED illumination to change the light distribution. The lens generally adopts the convex lens of the traditional concept. These two structures cannot achieve diversified light distribution changes, but can only achieve circular range of light concentration and astigmatism, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/04F21V17/00H01L23/02F21Y101/02F21Y115/10
Inventor 胡晓兵
Owner 胡晓兵
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