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Improvement of color rendering index of BGYR laser illuminants
Optical Review ( IF 1.1 ) Pub Date : 2022-02-03 , DOI: 10.1007/s10043-021-00717-w
Yoshio Manabe 1 , Masato Ishino 1 , Hiroshi Fuji 1 , Junichi Kinoshita 1 , Kana Fujioka 1 , Kazuhisa Yamamoto 1
Affiliation  

Laser-driven phosphor conversion (PC)-type white light sources are receiving a great deal of attention in next-generation high-intensity lighting and display technologies. Laser lighting is attracting attention for its functions, such as energy saving and light distribution control. However, the PC-type white light source has problems with color control and thermal quenching. Thus, monochromatic light mixed- or color mixed (CM)-type white light sources are promising, but there is a problem with their color rendering properties. We investigated the CM-type white light sources that mix four colors (blue, green, yellow, and red). We have improved the color rendering index (CRI) of a four-color mixed laser. By maximizing the value through combining the wavelength of four colors and each laser output ratio, the average CRI Ra and the special CRI R9 can be obtained when the color temperature used in general lighting is approximately 5000 K. The color rendering property was predicted by the combination of laser output ratios, and a light source with an Ra of 80 or more and R9 of 94 was obtained experimentally. At the same time, we were able to demonstrate the high luminous efficacy of radiation.



中文翻译:

BGYR激光光源显色指数的提高

激光驱动荧光粉转换 (PC) 型白光源在下一代高强度照明和显示技术中受到广泛关注。激光照明因其节能、配光控制等功能而备受瞩目。然而,PC型白光源存在色彩控制和热猝灭的问题。因此,单色混光或混色(CM)型白光源很有前景,但它们的显色性能存在问题。我们研究了混合四种颜色(蓝色、绿色、黄色和红色)的 CM 型白光源。我们改进了四色混合激光的显色指数 (CRI)。通过结合四种颜色的波长和每种激光输出比来最大化该值,平均 CRI R a特殊显色指数 R 9在一般照明使用的色温约为 5000 K 时可得到。显色性是通过激光输出比的组合预测的,光源的R a为 80 或更高,R 94个中有9个是通过实验获得的。同时,我们能够证明辐射的高发光效率。

更新日期:2022-02-03
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