Abstract
Illumination design for extended sources is very important for practical applications. The existing direct methods that are all developed for extended Lambertian sources are not applicable to extended non-Lambertian sources whose luminance is a function of position and direction. What we present in this Letter is to our knowledge the first direct method for extended non-Lambertian sources. In this method, the edge rays and the interior rays are both used, and the output intensity at a given direction is calculated to be the integral of the luminance function of all the outgoing rays at this direction. No cumbersome iterative illuminance compensation is needed. Two examples are presented to demonstrate the elegance of this method in prescribed intensity design for extended non-Lambertian sources in two-dimensional geometry.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Rengmao Wu and Hong Hua
Opt. Express 24(2) 1017-1030 (2016)
Rengmao Wu, Yi Qin, Hong Hua, Youri Meuret, Pablo Benítez, and Juan C. Miñano
Opt. Lett. 40(9) 2130-2133 (2015)
Rengmao Wu, Hong Hua, Pablo Benítez, Juan C. Miñano, and Rongguang Liang
Opt. Express 24(5) 5078-5086 (2016)