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Vehicle lamps with uniform apparent brightness
Vehicle lamps with uniform apparent brightness
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机译:具有均匀表观亮度的车灯
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摘要
A Parabolic-Type reflector has a uniform Apparent Brightness over the reflector surface. A model of the reflector is divided into a plurality of elements arrayed radially around the reflector focus. Each element has a length li measured radially from the focus and perpendicular to an optical axis of the reflector, and an initial depth d-initi measured parallel to the optical axis. For each element, a light-angle αi is calculated, the angle of light from the light source subtended by the element. An Apparent Brightness is found for each element, ABi≡αi/li. The element emin with the lowest Apparent Brightness ABmin is identified. For each element other than emin a required light-angle is found, the required light-angle α-corri=ABmin×li. While maintaining li, the initial depth d-initi of the element is reduced to a corrected depth d-corri necessary to achieve α-corri.
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机译:抛物线型反射器在反射器表面上具有均匀的表观亮度。反射器的模型分为多个围绕反射器焦点径向排列的元素。每个元件的长度l i Sub>从焦点开始径向测量并垂直于反射镜的光轴,并且初始深度d-init i Sub>平行于光轴测量。对于每个元素,计算一个光角度α i Sub>,该角度是来自光源的光的角度。找到每个元素AB i Sub>≡α i Sub> / l i Sub>的视在亮度。识别出具有最低表观亮度AB min Sub>的元素e min Sub>。对于e min Sub>以外的每个元素,找到所需的光角,所需的光角α-corr i Sub> = AB min Sub>×l i Sub>。在保持l i Sub>的同时,将元素的初始深度d-init i Sub>减小为达到α所需的校正深度d-corr i Sub> -corr i Sub>。
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