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Lighting device and relative projection system thereof

A light-emitting device and excitation light technology, which is applied in projection devices, optics, optical components, etc., can solve the problem of insufficient uniformity of combined light

Active Publication Date: 2014-07-09
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in practical application, it is found that the combined light of the receiving laser and the laser beam is not uniform enough.

Method used

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  • Lighting device and relative projection system thereof
  • Lighting device and relative projection system thereof
  • Lighting device and relative projection system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] See Figure 2A , Figure 2A It is a structural schematic diagram of an embodiment of the light emitting device in the embodiment of the present invention. The light emitting device 200 includes an excitation light source 201, a wavelength conversion device 202 carrying a wavelength conversion material, a first collection device 203, a laser light source device 1, a second collection device 3, a wavelength combining device 5, a third collection lens 7 and a first homogenizer. light stick9.

[0045] The excitation light source 201 is used to generate excitation light. The laser light source 201 may be an LED or a laser diode, and is used to excite the wavelength conversion material in the wavelength conversion device 202 to generate the first color of the stimulated light. The most commonly used wavelength conversion material is phosphor, such as YAG phosphor, which can absorb blue light and be stimulated to emit yellow stimulated light. The wavelength conversion mater...

Embodiment 2

[0069] see Figure 5 , Figure 5 It is a structural schematic diagram of another embodiment of the light emitting device in the embodiment of the present invention. The light emitting device 500 includes an excitation light source 201, a wavelength conversion device 202 carrying a wavelength conversion material, a first collection device 203, a laser light source device 1, a second collection device 3, a wavelength combining device 5, a third collection lens 7 and a first homogenizer. light stick9.

[0070] The difference from the embodiments shown above is that in this embodiment, the laser light source array 11 in the laser light source device 1 includes a first laser light source array 51 and a second laser light source array 52 . The laser light source device 1 also includes a light combining device 53. The light emitted by the first laser array 51 is transmitted through the light combining device 53 to form transmitted light, and the light emitted by the second laser ar...

Embodiment 3

[0078] see Figure 8 , Figure 8 It is a structural schematic diagram of another embodiment of the light emitting device in the embodiment of the present invention. The light emitting device 800 includes an excitation light source 801 , a wavelength conversion device 802 carrying a wavelength conversion material, a first collecting device 803 , a laser light source device 2 , a second collecting device 4 , a wavelength combining device 6 and a first uniform rod 8 .

[0079] The difference between this embodiment and the above embodiment is:

[0080] In this embodiment, the first collection device 803 includes a collection lens 83 for collecting the received light emitted by the wavelength conversion device 802 . The shape of the received light after passing through the first collecting device 803 is a circular light cone, wherein the light cone angle of the circular light cone on the incident wavelength combining device 6 is θ2.

[0081] The second collecting device 4 inclu...

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Abstract

The embodiment of the invention discloses a lighting device and a relative projection system thereof. The lighting device comprises an excitation light source, a wavelength conversion device used for absorbing exciting light to generate stimulated light, a first collecting device used for collecting the stimulated light, a laser light source device and a wavelength light-combining component, wherein the laser light source device comprises a laser light source array and is used for emitting laser light beams in colors differing from the color of the stimulated light, and the laser light beams are round along the section perpendicular to the optical axis of the light beams when emitted from the laser light source device; the wavelength light-combining device is used for combining the stimulated light emitted from the first collecting device and the laser light beams from the laser light source device into one combined light beam to be emitted in a wavelength light-combination mode; light spot faces, formed on the wavelength light-combining component, of the two beams of light, are matched in distribution. According to the light-emitting device, laser and the stimulated light generated through the wavelength conversion layer can be combined uniformly.

Description

technical field [0001] The present invention relates to the technical field of display and illumination, in particular to a light emitting device and a related projection system. Background technique [0002] Among projectors in the prior art, projectors using solid-state light-emitting devices, such as solid-state semiconductor light-emitting devices, especially light-emitting diodes (LEDs, Light Emitting Diodes) as light sources have been more and more widely used. Complying with the increasingly higher requirements for light output power of the light source, the projector light source based on light wavelength conversion stands out because of its strong practicability. This solution projects high-power light from a group of solid-state light sources to the wavelength conversion material Upcoming excitation produces high power output light with a predetermined dominant wavelength. [0003] In the white light source, the commonly used solution is to use a group of solid-st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G02B27/10
Inventor 胡飞侯海雄
Owner APPOTRONICS CORP LTD
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