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Luminescence device and related projection system and illumination system

A technology of light-emitting device and wavelength conversion device, applied in projection devices, optics, instruments, etc., can solve the problems of easy occurrence of thermal quenching and high energy density of excitation light, and achieve the effect of reducing energy density and thermal quenching phenomenon.

Active Publication Date: 2018-01-09
SHANGHAI BLUE LAKE LIGHTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a light-emitting device and related projection system and lighting system to solve the problem that thermal quenching is easy to occur due to the high energy density of excitation light

Method used

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  • Luminescence device and related projection system and illumination system
  • Luminescence device and related projection system and illumination system
  • Luminescence device and related projection system and illumination system

Examples

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Embodiment 1

[0063] According to the above experimental findings and principle analysis, the present invention proposes a light emitting device. see Figure 7 , Figure 7 It is a structural schematic diagram of an embodiment of the light emitting device in the embodiment of the present invention. Such as Figure 7 As shown, the light emitting device 700 includes a light source 710 and a surface scattering sheet 720 .

[0064] The light source 710 is preferably a laser, and may also be other light-emitting elements or components, as long as it can provide incident light L1 with a small divergence angle.

[0065] Structural Reference of Surface Scattering Sheet 720 image 3 instruction of. The light L1 from the light source 710 is incident on the surface scattering sheet 720 , and the light L1 may be incident on the plane surface of the surface scattering sheet 720 or may be incident on the rough surface of the surface scattering sheet 720 . The surface scattering sheet 720 is used to ...

Embodiment 2

[0071] see Figure 8a and Figure 8b , Figure 8a is a schematic structural view of another embodiment of the light emitting device in the embodiment of the present invention, Figure 8b yes Figure 8a Schematic diagram of the inlet of the integrating rod viewed from the x direction in the examples. Such as Figure 8a and 8b As shown, the light emitting device 800 includes a light source 810 and a surface scattering sheet 820 , and the incident light L1 emitted by the light source 810 is obliquely incident on the surface scattering sheet 820 . The light-emitting device also includes an integrator rod 830 located at the rear end of the light path of the surface scattering sheet 820. The optical axis of the light emitted by the surface scattering sheet 820 is the horizontal direction of the paper, the entrance plane of the integrating rod is perpendicular to the optical axis, and the long side direction of the integrating rod entrance 831 Parallel to the vertical direction...

Embodiment 3

[0075] see Figure 9a and Figure 9b , Figure 9a is a schematic structural view of another embodiment of the light emitting device in the embodiment of the present invention, Figure 9b yes Figure 9a Schematic diagram of the wavelength conversion device viewed from the x-direction in the examples. Such as Figure 9a and 9b As shown, the light emitting device 900 includes a light source 910 and a surface scattering sheet 920 , and the incident light L1 emitted from the light source 910 is obliquely incident on the surface scattering sheet 920 . The light-emitting device also includes a wavelength conversion device 930. The light scattered by the surface scattering sheet 920 is incident on the wavelength conversion device, and the optical axis of the light emitted by the surface scattering sheet 920 is perpendicular to the wavelength conversion device. The diameter D of the wavelength conversion device is the vertical direction.

[0076] The wavelength conversion device...

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Abstract

The embodiment of the invention discloses a luminescence device and a related projection system and an illumination system; the luminescence device comprises the following units: a light source; a surface diffuser used for diffusing incident lights from the light source, wherein the incident light obliquely enters the diffuser, thus forming a diffusion light spot in a polarity shape through the diffuser; the normal of a surface diffuser diffusion surface is in a plane defined by the incident lights and a preset direction; the luminescence device also comprises a wavelength converter, wherein the light diffused by the surface diffuser enters the wavelength converter. The polarity shape of the system can fully utilize a rectangle inlet area of an integrator rod, i.e., the fluorescence lightspot entering the integrator rod can be bigger, so an excitation light spot entering phosphor can be bigger, thus reducing the excitation light energy density, and reducing thermal quenching phenomenon.

Description

technical field [0001] The invention relates to the technical field of display and illumination, in particular to a light emitting device, a related projection system and an illumination system. Background technique [0002] Using laser as excitation light to excite phosphors to produce fluorescence is the main development direction of new special light sources, which have been used in projection display, engineering special lighting and other fields. [0003] Due to the strong collimation of the laser, if the collimated laser is directly focused, the resulting focus diameter is extremely small, and thermal quenching is prone to occur when the phosphor is excited. Such as Figure 1a As shown, in order to avoid the occurrence of thermal quenching, the currently widely used solution is to use a surface scattering sheet 12 on the optical path of the incident laser light emitted by the laser source 11 to scatter the collimated laser light L into a beam with a certain cone angl...

Claims

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Application Information

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IPC IPC(8): G03B21/20
Inventor 不公告发明人
Owner SHANGHAI BLUE LAKE LIGHTING TECH CO LTD
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