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Lens, lens array and lighting device

A technology for lighting devices and lens arrays, which is applied to lighting devices, lighting device parts, lighting and heating equipment, etc., can solve the problems of darkening of the light exit surface and uneven light, and achieve the effect of compact structure

Inactive Publication Date: 2018-05-29
SITECO GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like Figure 2B As shown, in this case, since the first group of LEDs 21 is turned off, the light exit surface of the lens corresponding to the first group of LEDs 21 becomes dark, which will make the user mistakenly think that the dimmed LED lighting device 2 The LED is malfunctioning
[0009] Moreover, in the LED lighting device 2, if both the first group of LEDs 21 and the second group of LEDs 22 are turned on, there will be a color difference between the area DA and the area BR, which makes the light emitted by the LED lighting device 2 uneven

Method used

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  • Lens, lens array and lighting device
  • Lens, lens array and lighting device
  • Lens, lens array and lighting device

Examples

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Embodiment Construction

[0042] Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] Figure 3A to Figure 3E An example of a lens according to an embodiment of the present invention is shown. For ease of understanding, in Figure 3A A first LED 31 and a second LED 32 are also shown in . Such as Figure 3A and Figure 3B As shown, the lens 3 includes a first surface IS and a second surface ES. Wherein, the first surface IS includes a light incident surface and a total reflection surface. The light incident surface includes surface B, surface C, surface D1 and surface D2, and the total reflection surface includes surface A.

[0044] In this example, the surface A comprises two partial conical surfaces corresponding to the first LED 31 and the second LED 32 respectively and partially surrounding a surface B corresponding thereto. Such as Figure 3C As shown, the rotation angle of each partial conical surface may be more than 180 de...

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Abstract

The present invention relates to a lens, a lens array and an illuminating device. The lens comprises a first surface and a second surface, wherein the first surface comprises: light incident surfaces, from which light enters the lens; and a total reflection surface, on which a part of light entering the lens is totally reflected, the second surface comprises a light emergent surface, wherein the light incident surfaces comprise a plurality of three-dimensional surfaces assigned to different light sources, a part of light from one light source enters the lens from one three-dimensional surface assigned to the one light source, and the other part enters the lens from one three-dimensional surface that is not assigned to the one light source. The lens has a compact structure and can uniformly mix colors.

Description

technical field [0001] The present invention relates to a lens, a lens array and an illuminating device including the lens or the lens array, more particularly, to a compact lens capable of color mixing, the lens array and the illuminating device including the lens or the lens array. Background technique [0002] Recently, in various fields requiring lighting, variable correlated color temperature (CCT: correlated color temperature) capability has become an additional requirement and has been increasingly used. For example, in an LED lighting device, the correlated color temperature of the entire LED lighting device is usually adjusted by integrating a plurality of LEDs with different correlated color temperatures and adjusting the supply current of some or all of the LEDs. [0003] figure 1 An LED lighting device 1 with variable correlated color temperature is shown. Such as figure 1 As shown, the LED lighting device 1 includes a first group of LEDs 11, a second group of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V5/04F21Y115/10
CPCF21V5/007F21V5/04F21V7/0091F21Y2105/10F21Y2113/13F21Y2115/10G02B19/0028G02B19/0066
Inventor 李爱爱何源源卢元罗亚斌
Owner SITECO GMBH
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