Light emission device and illumination device
A light-emitting device and light source technology, applied to lighting devices, components of lighting devices, signal devices, etc., can solve problems such as high difficulty, large-scale, and reduced laser utilization efficiency, and achieve the effect of low cost and simple structure
Inactive Publication Date: 2019-03-01
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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Problems solved by technology
In addition, if dedicated optical components are provided, the device becomes large and expensive.
At the same time, affected by the optical characteristics (transmittance, reflectivity, diffraction efficiency) of these optical components, the utilization efficiency of laser light is greatly reduced
In addition, there are many problems requiring countermeasures, such as the coaxial adjustment method and the method of suppressing the influence caused by the temperature characteristics of optical components.
Method used
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[0042] Embodiments of the present disclosure will be described in detail below. Furthermore, the embodiments described below all show a specific example of the present disclosure. Numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of constituent elements, steps and the order of steps, etc. shown in the following embodiments are examples and do not limit the gist of the present disclosure. In addition, among the constituent elements of the following examples, the constituent elements not described in the embodiment showing the most general concept of the present disclosure are described as arbitrary constituent elements.
[0043] In addition, each drawing is a schematic diagram and does not necessarily have to be strictly shown. Therefore, the scales and the like in the respective drawings do not match.
[0044] (Example)
[0045] The light emitting device and lighting device according to the embodiment will be described usi...
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This light emission device (1) is provided with: a plurality of light sources (100, 200); a light deflection unit (140) for deflecting a plurality of excitation light rays (101, 201); and a wavelengthconversion unit (160) which is irradiated with the plurality of excitation light rays (101, 201) deflected by the light deflection unit (140), converts the plurality of excitation light rays (101, 201) into wavelength-converted light of different wavelengths, and emits said wavelength-converted light. The light deflection unit (140) is provided with one movable mirror (142) on which the pluralityof excitation light rays (101, 201) become incident along different optical axes. The plurality of excitation light rays (101, 201) have equal optical path lengths from the movable mirror (142) to the wavelength conversion unit (160).
Description
technical field [0001] The present disclosure relates to a light emitting device that irradiates a wavelength conversion unit with excitation light emitted from a light source unit to cause the wavelength conversion unit to generate light having a wavelength different from that of the excitation light, and an illumination device including the light emitting device. Background technique [0002] Illumination devices using laser light sources such as semiconductor light emitting elements (semiconductor laser elements) include spot lighting, vehicle headlights, projectors, endoscope lighting, and the like. In these illuminating devices, a wavelength converter composed of a phosphor represented by yttrium aluminum garnet (YAG) is irradiated with laser light having a wavelength near 400 nm or near 450 nm, and the fluorescence generated by the excitation of the phosphor, Alternatively, emitted light composed of fluorescence and scattered components of excitation light is used as i...
Claims
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IPC IPC(8): F21S41/675F21S41/20F21W107/10F21Y115/30
CPCH01S5/0071H01S5/4087F21S41/285F21S41/255F21S41/265F21S41/321F21S41/675F21S41/16F21S41/365F21S41/176H01S5/34333F21V9/35F21V13/04F21Y2115/30F21V5/008H01S5/0087H01S5/22F21V5/043F21V7/043F21V14/04F21V13/14
Inventor 村上公博古贺稔浩松村一幸
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD