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Lighting device and related projection system

A light-emitting device with roughly the same technology, which is applied to projection devices, lighting devices, components of lighting devices, etc., can solve the problems of uneven color, trouble for users, and unresolved problems, and achieve the effect of good uniformity

Active Publication Date: 2016-09-21
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, such LED lighting devices have the following problem: Uniform illumination can be obtained on a specific plane (on the imaging plane of the projection lens 17), but significant color unevenness will appear on the front and rear planes of this plane
This problem has caused troubles for users in practical applications, but it has not been resolved so far.

Method used

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  • Lighting device and related projection system
  • Lighting device and related projection system
  • Lighting device and related projection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] see Figure 2A , Figure 2B and Figure 2C , Figure 2A It is a structural schematic diagram of an embodiment of the light-emitting device of the present invention, Figure 2B for Figure 2A The schematic diagram of the arrangement of the LED unit module array in the light emitting device shown. The light emitting device includes an LED unit module array 1 , a collimator lens array 3 and a condenser lens 5 .

[0045] Each collimating lens 31 in the collimating lens array 3 is aligned with one LED unit module 11 in the LED unit module array 1 for collimating the light beam emitted by the LED unit module 11 . The condenser lens 5 is located at the rear end of the optical path of the collimator lens array 3 , and is used for converging the light emitted from the collimator lens array 3 onto the predetermined surface 7 . Among them, the predetermined surface 7 is often the focal plane of the condenser lens 5 .

[0046] LED chips of at least two colors form an LED chi...

Embodiment 2

[0078] see image 3 , image 3 It is another schematic diagram of arrangement of the LED unit module array in the light emitting device of the present invention. The LED unit module array includes a plurality of LED unit modules 33, wherein the LED chips included in the LED chipset in each LED unit module 33 are all consistent, and the positive and negative pole connector groups on the substrate of each LED unit module are uniform. totally agree.

[0079] The difference between this embodiment and Embodiment 1 is:

[0080] In this embodiment, the LED unit module array only includes one LED unit module 33, and the arrangement of each LED chip in the LED chip group is rotationally symmetrical about its center, so that the LED unit module 33 rotates a predetermined angle. The position of the chipset can still coincide with the position of the LED chipset at 0 degrees.

[0081] In this embodiment, each LED unit module is specifically as follows Figure 2C The LED unit module ...

Embodiment 3

[0108] In Embodiment 1 and Embodiment 2, by using different types of LED unit modules and by using the same LED unit module but different wiring directions to realize the LED chips of any color in each of the LED unit modules Simple wiring with roughly the same distribution of locations. However, in practice, the two methods can also be combined to achieve the same purpose. Specific instructions are given below.

[0109] see Figure 6 , Figure 6It is another schematic diagram of arrangement of the LED unit module array in the light emitting device of the present invention. The LED unit module array includes a plurality of LED unit modules, wherein the LED chips included in the LED chipset in each LED unit module are consistent, and the positive and negative connector groups on the substrate of each LED unit module are completely consistent .

[0110] The difference between this embodiment and the above embodiment is:

[0111] The LED unit module array includes two diffe...

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Abstract

The embodiment of the present invention discloses a light emitting device and a related projection system. The light emitting device includes an LED unit module array having a plurality of LED unit modules, wherein each LED unit module includes an LED chip group having a consistent LED chip; The positive and negative connectors of each LED chip in the LED chip group are respectively arranged on the two opposite sides of the substrate, and the arrangement order of the positive and negative connectors on the substrate of each LED unit module is uniform. The same; the lines connecting the LEDs of the same color in each LED unit module in series form a line, and the lines connecting LEDs of different colors in series are parallel to each other, so that all the LED unit modules in the LED unit module array are connected in series The connected lines form a bunch of lines, and the number of intersections between the bunch lines and itself is not more than 3; among them, LED chips of any color other than white have approximately the same distribution in each position of the LED unit module . The invention provides a light emitting device capable of forming light spots with uniform color.

Description

technical field [0001] The invention relates to the technical field of illumination and display, in particular to a light emitting device and a related projection 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 for development and application in the field of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20F21V19/00F21Y115/10
CPCG03B21/2013G03B21/2033G03B33/00
Inventor 李屹叶红刘红兵唐怀吴希亮张权
Owner APPOTRONICS CORP LTD