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    • 10. 发明授权
    • Light measuring apparatus and light measuring method
    • 光测量装置和光测量方法
    • US08422019B2
    • 2013-04-16
    • US13034880
    • 2011-02-25
    • Yumiko YoshikawaTsutomu IshiRyuji FunayamaShinya Kawamata
    • Yumiko YoshikawaTsutomu IshiRyuji FunayamaShinya Kawamata
    • G01N21/55
    • G01N21/55
    • A light with a known spectrum is emitted from a light source toward a road surface, a first reflected light that is a reflected light of the known light reflected from the road surface is received by a first light receiver, and a reflectance spectrum of the light of the road surface is calculated from a spectrum of the first reflected light received by the first light receiver and the spectrum of the known light stored in the storage unit. A second reflected light that is reflected light of an environmental light reflected from the road surface is received by a second light receiver, and a spectrum of the environmental light is calculated from a spectrum of the second reflected light received by the second light receiver and the calculated reflectance spectrum of the light of the road surface.
    • 具有已知光谱的光从光源朝向路面发射,作为从路面反射的已知光的反射光的第一反射光被第一受光器接收,并且光的反射光谱 根据由第一光接收器接收的第一反射光的光谱和存储在存储单元中的已知光的光谱计算路面的面积。 从路面反射的环境光的反射光的第二反射光被第二受光器接收,并且由第二光接收器接收的第二反射光的光谱计算环境光的光谱, 计算出路面光线的反射光谱。