Phosphor device

Abstract

A phosphor device is provided, is applicable to an illumination system emitting a first waveband light. The phosphor device includes a substrate and a phosphor layer. The phosphor layer is formed on the substrate to convert the first waveband light into second waveband light, and the phosphor layer includes a first phosphor agent and a second phosphor agent. The first phosphor agent converts the first waveband light into first colored light, wherein the first colored light has a first wavelength peak value. The second phosphor agent is distributed between the first phosphor agents and is mixedwith the first phosphor agents; the first waveband light is converted into a second colored light, and the second colored light is provided to a second wavelength peak value, the first colored lightand the second colored light are integrated into second waveband light, the difference between the first wavelength peak value and the second wavelength peak value is 50-100 nanometers. Therefore, thetechnical effect of increasing the purity, the brightness and the luminous intensity of the specific colored light is achieved.

Description

technical field [0001] The disclosure relates to a fluorescent agent device, in particular to a fluorescent agent device suitable for a light source system. Background technique [0002] In recent years, various projection devices, such as projectors, have been widely used in families, schools or various business occasions to enlarge and display an image signal provided by an image signal source on a screen. . In order to save power consumption and reduce the size of the device, the light source system (Illumination System) of current projection equipment has used solid-state light-emitting elements, such as light-emitting diodes or laser elements, to replace traditional high-density gas discharge lamps (HIDLamp) or high-pressure mercury lamps. [0003] The light source system of the projection device needs to be able to emit three primary colors of light such as red light, green light, and blue light (R, G, B). Among them, for the structure that emits red light, most of t...

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Problems solved by technology

However, under this framework, the purity of the obtained red light is not good, and the conversion efficiency is not good

[0004] In another common structure, the excitation light is emitted from a solid-state light-emitting element to a wavelength conversion device coated with a red phosphor to emit red light, but this structure has poor photothermal stability

In addition, solid-state light-emitting elements can also be used to directly emit red laser light to obtain high-purity red light, but it is expensive and requires an additional cooling system, which requires a high cost

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