Importance sampling is a Monte Carlo technique in which rays are generated and propagated in specific directions in the optical system, which are “important” in determining the results you need. This improves sampling by increasing the number of rays reaching the surface or surfaces of interest to the user. Importance sampling is essential in a stray light analysis, where the attenuation of incident light can be very great, and can be helpful in other types of analyses. In a stray light analysis, there should be an importance sampling target for each optical surface in the optical system. It is important to remember that importance sampling is used only to enhance the sampling of scattered and diffracted light or surface sources. Designs that include only specular reflection and transmission cannot take advantage of importance sampling — the direction of the rays is determined by the Law of Reflection and Snell’s Law. 4 南宁市| 眉山市| 南川市| 巢湖市| 和平区| 乐亭县| 若尔盖县| 英吉沙县| 名山县| 称多县| 武汉市| 武平县| 灌云县| 云南省| 如皋市| 武威市| 洪洞县| 肥城市| 罗山县| 富顺县| 育儿| 滦南县| 浪卡子县| 荆州市| 安溪县| 定襄县| 新安县| 偏关县| 永德县| 合山市| 龙海市| 伊金霍洛旗| 二手房| 绿春县| 吴江市| 白玉县| 大城县| 梓潼县| 小金县| 会理县| 普格县|