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LED light source system and LED lighting device

A technology of LED light source and LED chip, which is applied in the field of light source, can solve the problems of users' troubles and problems that have not been solved

Active Publication Date: 2016-09-21
YLX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above problems have caused troubles for users in practical applications, but have not been resolved so far.

Method used

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  • LED light source system and LED lighting device
  • LED light source system and LED lighting device
  • LED light source system and LED lighting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Figure 2aIt is an arrangement diagram of LED chips in the LED light source system of this embodiment. In this embodiment, LED chips of different colors form a chip group and are fixed on a unit to form an LED unit module 21 , and a plurality of LED unit modules form a multi-color LED unit module array. Wherein, each LED unit module includes LED chips of each color used in the multi-color LED unit module array. Figure 2b for Figure 2a Arrangement diagram of different LED chips on any of the LED unit modules, wherein, 21 is the LED unit module, which is composed of 4 different LED chips, including a red LED chip 21R, a green LED chip 21G, a blue LED chip The LED chip 21B and a white LED chip 21W are fixed on the same heat-conducting substrate 213 . The thermally conductive substrate 213 can be made of aluminum oxide, aluminum nitride and other thermally conductive ceramics, as long as it has a sufficiently high thermal conductivity and an insulating surface layer. ...

Embodiment 2

[0060] In the first embodiment, a fly-eye lens is used in the light source system in order to realize the spatial homogenization of the projected spot, but the cost of using the fly-eye lens is high and the system is complicated; this embodiment will use another way to homogenize the light Instead of fly-eye lenses.

[0061] In this embodiment, the LED chip groups in each LED unit module are imaged on a predetermined surface by overlapping the collimator lens and the condenser lens to form a mixed spot. The distribution of LED chips of different colors makes the LED chips of any color have approximately the same distribution in each position of each LED unit module, so that the mixed light spot has good uniformity. For example, if Figure 4b As shown, the blue LED chip (identified as B in the figure) has four different positions in each LED unit module, which are the upper left corner, lower left corner, upper right corner and lower right corner, and the blue LED chip is in e...

Embodiment 3

[0066] In the above two embodiments, for the LED chip of each color, since the chip deviates from the optical axis relative to the collimating lens (such as image 3 The LED chip 211 shown in is deviated from the optical axis 221 of the collimating lens 22), and the projected light spot of a single chip is eccentric relative to the central optical axis of the entire light source system, which will affect the uniformity of the light spot formed by the LED light source system on the predetermined surface adverse effects on sex.

[0067] In this embodiment, on the basis of the second embodiment, the fly-eye lens group in the first embodiment is used in combination, and the light uniformity effect will be better. Figure 5a In the case of a fly-eye lens group, for Figure 2a The arrangement of the LED unit modules shown is the result of simulating the red LED chip; Figure 5b Also in the case of a fly eye lens group, for Figure 4b The arrangement of the LED unit modules shown ...

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Abstract

Disclosed are a LED light source system and a lighting system using the light source system, comprising a multi-color LED unit modular array that comprises multiple LED unit modules; a collimating lens array used to collimate the light rays emitted by the LED unit modules; condenser lens disposed at the rear of the light path of the collimating lens array and used to condense the light emitted from the collimating lens onto a pre-set surface, the LED chip set in each LED unit module imaging, via the superimposition of the collimating lens and the condenser lens, onto the pre-set surface to form a mixed light spot; the LED chips of any one color in the LED unit module are approximately evenly distributed so as to provide good uniformity for the mixed light spots. Hence, the light spots emitted by the light source system are more uniform, and each collimating lens collimates the LED chips of multiple colors while mixing the multiple colors, thereby reducing the bad visual effect caused by colored shadows.

Description

technical field [0001] The invention relates to the field of light sources such as projection and lighting, and in particular to an LED light source system and an LED lighting device using the LED light source system. Background technique [0002] Traditional high-power lighting devices and light lighting equipment generally use metal halide discharge bulbs as light sources. Since the metal halide discharge bulb is a white light source, when it is necessary to obtain colored light, it is necessary to install a filter in front of the metal halide discharge bulb to achieve light output of different colors. The disadvantage of this light source is that the service life of the metal halide discharge bulb is low, ranging from only a few hundred hours to thousands of hours; the filter makes the projected color light saturation low and not bright, and the obtained light color is not Rich. [0003] High-power light-emitting diodes (LEDs) have gradually become the preferred device ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21K9/60F21K9/69F21V19/00F21V13/00G02B27/09G02B27/30G02B27/18G03B21/20F21Y115/10
CPCF21V5/007F21V5/008F21Y2105/10F21Y2105/12F21Y2113/13F21Y2115/10
Inventor 张权
Owner YLX INC