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Light source and display system

A light source and beam technology, applied in the field of solid-state lighting, to achieve the effect of reducing the amount of expansion and improving the brightness

Inactive Publication Date: 2012-10-17
YLX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of this, the present invention provides a light source and a display system to overcome the inability in the prior art to combine the light beam emitted by another LED that has a large spectral overlap with any LED in the original light emitting device group.

Method used

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  • Light source and display system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] image 3 A specific embodiment of the light source in the present invention is shown. In this embodiment, the light beams finally output by the original light-emitting device group and the supplementary light-emitting device group are on different sections of the geometric light-combining device. For the convenience of description, "above" and "below" are used below to represent the positional relationship between components, and the "above" and "below" are respectively the upper and lower in the figure.

[0052] see image 3 , in this embodiment, the original light-emitting device group includes LEDs of three primary colors as an example for illustration. Specifically, the original light-emitting device group 1 includes red LED11 (marked as R in the figure), green LED12 (marked as R in the figure) G) and blue light LED13 (marked as B among the figure). It should be clear to those skilled in the art that the number of LEDs in the original light emitting device group i...

Embodiment 2

[0065] exist Figure 4 In another embodiment of the light source shown in , the light beams finally output by the original light-emitting device group and the supplementary light-emitting device group are still not on the same section of the geometric light-combining device. However, in the previous embodiments, the light-filling light-emitting device group is composed of white LEDs. In fact, in order to achieve the purpose of light-filling the light-filling light-emitting device group, as long as the light-filling light-emitting device group consists of multiple The spectral overlap of either LED constitutes the larger LED.

[0066] Such as Figure 4 As shown, the supplementary light emitting device group 26 includes cyan LED261 (marked as Cyan in the figure), amber LED262 (marked as Amber in the figure) and royal blue LED263 (marked as Royal Blue in the figure) as an example. The three light beams output by the cyan LED261, the amber LED262 and the royal blue LED263 are wa...

Embodiment 3

[0074] In the technical solutions of Embodiment 1 and Embodiment 2 above, the supplementary light-emitting device group is located below the original light-emitting device group as a whole. Of course, the supplementary light-emitting device group can also be located above the original light-emitting device group. In fact, it is also possible to place the supplementary light-emitting device group between two LEDs in the original light-emitting device group, for example Figure 5 Another embodiment of the light source of the present invention is shown in .

[0075] The difference between the light source in this embodiment and the light source in Embodiment 1 is that the white LED 21 used as the supplementary light-emitting device group is placed between the red LED 11 and the green LED 12 in the original light-emitting device group.

[0076] The internal structure of the original light-emitting device group and the positional relationship between the LED and the two dichroic mi...

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Abstract

The invention discloses a light source and a display system. The light source comprises at least one original light emitting device group and at least one supplementary lighting device group; each original light emitting device group comprises at least two light emitting diodes (LEDs) and a wavelength light combining device, wherein the energy of overlapped light spectrums in a normalized light spectrum of the two LEDs is 50% smaller than that of the LED with smaller energy, and the wavelength light combining device is used for combining all light output by all LEDs in the original light emitting device group in a wavelength light combining way; each supplementary lighting device group comprises at least one LED, and the energy of overlapped light spectrums in a normalized light spectrum of any one LED of each supplementary lighting device group and at least one LED in each original light emitting device group is 10% larger than or equal to the energy of the LED with smaller energy; and the light source also comprises a geometric light combining device used for combining a light beam finally output by each original light emitting device group and a light beam finally output by each supplementary lighting device group into a light beam in a geometric light combining way.

Description

technical field [0001] The invention relates to the field of solid-state lighting, and more specifically relates to a light source and a display system. Background technique [0002] Solid-state light-emitting devices, including LED (Light Emitting Diode, light-emitting diode), LD (Laser Diode, laser diode), are a kind of solid-state semiconductor device that can convert electrical energy into visible light, and it can directly convert electrical energy into visible light. [0003] Among them, LEDs and phosphor-cover LEDs (phosphor-cover LEDs, PC-LEDs) are mostly used as light sources for lighting and are suitable for the lighting field. The principle of phosphor-covered LED is to coat the phosphor on the surface of the LED chip, and use the light emitted by the LED to excite the phosphor and emit fluorescence. The most common example of a phosphor-covered LED is that yellow phosphor is coated on the surface of a blue LED chip, and is excited by the blue light emitted by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V13/00F21Y101/02
Inventor 胡飞杨毅
Owner YLX INC