Lighting fixtures and lamps
A technology for light-emitting devices and light-concentrating devices, which is applied to lighting devices, components of lighting devices, optical elements used to change the spectral characteristics of emitted light, etc., can solve the problems of unsatisfactory application and low color rendering index of white light.
Active Publication Date: 2017-06-23
杨毅
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Problems solved by technology
However, the color rendering index of such white light is relatively low, which cannot meet the application of special occasions such as medical lighting.
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[0022] The present invention proposes a wavelength conversion device, the structural schematic diagram of the first embodiment is as follows figure 1 shown. The wavelength conversion device includes a substrate 101 with a through hole 102, the inner wall of the through hole 102 is reflective to visible light, and the two ends of the through hole are incident end 102a and output end 102b respectively. The wavelength conversion device further includes a first wavelength conversion layer 103 attached to the inner wall surface of the through hole 102 for being stimulated to emit the first stimulated light. The wavelength conversion device further includes a second wavelength conversion layer 104 located at the exit end 102b of the through hole and sealing the through hole, for being stimulated to emit the second stimulated light. Wherein, the second wavelength conversion layer can be excited by the first stimulated light.
[0023] With this wavelength conversion device, the exci...
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The invention provides a wavelength conversion device, a light emitting device and a lamp. The wavelength conversion device comprises a substrate with a through hole; the inner wall of the through hole has reflectivity to visible light; the two ends of the through hole are an incidence end and an emergence end respectively; the wavelength conversion device further comprises a first wavelength conversion layer and a second wavelength conversion layer; the first wavelength conversion layer is attached to the surface of the inner wall of the through hole and used for being stimulated to emit first stimulated light; the second wavelength conversion layer is located at the emergence end of the through hole, seals the through hole and is used for used for being stimulated to emit second stimulated light; the second wavelength conversion layer can be stimulated by the first stimulated light. Stimulating light entering the through hole can stimulate the first wavelength conversion layer firstly, and the first stimulated light emitted by the stimulated first wavelength conversion layer further stimulates the second wavelength conversion layer, so that the second wavelength conversion layer emits the second stimulated light. The wavelength of the first stimulated light is closer to the wavelength of the second stimulated light compared with the stimulating light, therefore, the first stimulated light is used for stimulating the second wavelength conversion layer, and the efficiency in this manner is higher than the manner that stimulating light is directly used for stimulating the second wavelength conversion layer.
Description
[0001] Technical field: [0002] The invention relates to the field of illumination light sources, in particular to a wavelength conversion device, a light emitting device and a lamp using the wavelength conversion device. [0003] Background technique: [0004] With the development of semiconductor technology, LED light sources are replacing traditional incandescent lamps and energy-saving lamps as a new type of lighting source. As a general lighting source, it has the advantages of high efficiency, energy saving, environmental protection and long life. However, in some special application fields, such as stage lighting, car headlights, projection display and other fields, what is needed is a light source with ultra-high brightness, and it is difficult for LEDs to meet the requirements at this time. Laser diodes, which belong to the same semiconductor light source as LEDs, also have the advantages of high efficiency, energy saving, environmental protection, and long life. At t...
Claims
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IPC IPC(8): F21V9/10F21V9/40
CPCF21V9/40
Inventor 杨毅
Owner 杨毅