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    • 7. 发明申请
    • LIGHT SOURCE UNIT AND PROJECTOR
    • 光源单位和投影机
    • US20110051102A1
    • 2011-03-03
    • US12872173
    • 2010-08-31
    • Naotsugu OguraMasahiro OgawaHideki NakamuraTakeshi MiyazakiHiroki MasudaYasuyuki Kawakami
    • Naotsugu OguraMasahiro OgawaHideki NakamuraTakeshi MiyazakiHiroki MasudaYasuyuki Kawakami
    • G03B21/14F21V9/16
    • G03B21/204
    • With a view to providing a light source unit which can emit light source light of high luminance and high intensity even in the small quantity of excitation light, there is provided a light source unit including an excitation light source for emitting light in a blue wavelength band, a fluorescent wheel, a light emitting device for emitting light in a red wavelength band and a light guiding optical system for guiding light emitted from the fluorescent wheel and the light emitting device to a light guiding device, wherein the fluorescent wheel is made up of a fluorescent area where a green fluorescent material layer for emitting fluorescent light in a green wavelength band is disposed and a diffuse area for converting light emitted from the excitation light source into diffuse light of which directivity is weak are disposed end to end in a circumferential direction, and wherein the green fluorescent material layer is such that a concentration of weight content of the green fluorescent material in the green fluorescent material layer relative to the fluorescent material layer and a thickness thereof are determined so that a luminescent intensity of fluorescent light emitted from the green fluorescent material layer is enhanced.
    • 为了提供即使在少量的激发光下也能够发出高亮度和高强度的光源光的光源单元,提供了一种光源单元,其包括用于发射蓝色波长带中的光的激发光源 荧光轮,用于发射红色波长带的光的发光装置和用于将从荧光轮发射的光和发光装置引导到导光装置的导光光学系统,其中荧光轮由 设置用于发出绿色波长带的荧光的绿色荧光体层的荧光区域,将从激发光源射出的光变换为方向性弱的漫射光的扩散区域沿圆周方向 ,并且其中所述绿色荧光材料层使得所述绿色荧光体m的重量含量的浓度 确定绿色荧光材料层中相对于荧光材料层的空隙及其厚度,使得从绿色荧光材料层发射的荧光的发光强度增强。