Projection device

Abstract

A phosphor device of an illumination system emitting a first waveband light and having an optical path includes a first section and a first phosphor agent. The first phosphor agent is coated on the first section. The first waveband light is received and converted into a second waveband light by the first phosphor agent. The second waveband light is directed to the optical path. The range of the spectrum of the second waveband light includes at least a first color light and a second color light, so that the first color light or the second color light is separated from the second waveband light along the optical path. Therefore, the diversity of the design of the phosphor device is enhanced, the manufacturing cost and the size of product are reduced, and the color purity is enhanced.

Description

Technical field [0001] This case 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 equipment, such as projectors, have been widely used in homes, schools, or various business situations to enlarge and display the image signal provided by an image signal source on the screen. . In order to save power consumption and reduce the size of the device, the current illumination system of 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 equipment needs to be able to emit red, green, and blue (R, G, B) and other primary colors. However, the luminous efficiency of solid-state light-emitting elements is generally the best for blue solid-state light...

AI Technical Summary

Problems solved by technology

Due to the low chemical stability of silver, when the laser wattage or operating temperature increases, silver atoms will aggregate and vulcanize, resulting in a sharp drop in reflectivity. Therefore, aluminum is often used as a reflector in high-energy fluorescent agent color wheels. Coating; while aluminum has better stability, it has the characteristics of low reflectivity, especially for the red light range, that is, visible light with a wavelength of 600 to 700 nanometers, the reflectivity is the lowest, which leads to red light. Insufficient light output ratio, which reduces the light output efficiency

In short, whether the reflective coating is made of silver or aluminum, there are cases where the reflectivity is not good

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