Hi Guys,I am trying to model a LED reflector collimator and following the link by Mark Nicholson. But that is not a reflective surface. It used a compound parabolic concentration object (CPC). https://www.youtube.com/watch?v=kpkeze3mvLoBut I am designing a spotlight which is softer in nature (pic attached).(1)I believe the basic principle is the same in collimating the beam but how I get this hollow moonlike reflector? Is there another surface structure like CPC that will allow me to do this surface property? (2)Also, I have followed Mark Nicholson’s video (link) and it doesn’t show how I can control the beam width. It has 8 degree beam width I believe in the example, but how I can control that to make it 6 degree or 10?

Hi Guys, Looking for a merit function that was used for the Fly’s eye array for uniformity.Fly’s eye arrays for uniform illumination in digital projector optics – Ansys OpticsThis file also comes in the sample of the zemax file. \Documents\Zemax\Samples\Design Applications\Illumination Systems\1- Flys Eye IntegratorsIf anyone can share the .mf file will be helpful. Thanks, 

Is it possible to open multiple instances of Zemax with the same set of analysis windows template (session or config file, I am not sure) to analyze the performance differences among similar but different Zemax files without creating the same analysis windows separately for each Zemax file? It is something what is done in Design Templates feature, but with user defined customized template.

你好，我曾在一台电脑上激活Zemax许可证，但是那台电脑重装系统后，许可证丢失了。现在我想在重装系统后的电脑上再次激活Zemax，也没有转移码，请问我该怎么办？

您好! 有個問題想請教大家，最近在安裝Version 18.9的時候無法順入進Local host。點選Launch Sentinel Admin Control Center後，都無法順利進入Sentinel Admin Control Center，會出現以下畫面： 但是最後先安裝最新版本Version 22.3後就可以順利進去Sentinel Admin Control Center，必須設定好License之後在移除新版Version 22.3，接著安裝舊版Version 18.9本才可以正常使用。 請問這有沒有其他的解決方法呢？謝謝！

各位前輩大家好，對於Coating and Scatter這兩個特性有些疑問想請教大家，如果同時設定了Coating與Scatter，那這個物體的表面特性會變成如何呢?謝謝。  

当使用hammer 优化时，防止电脑死机，计算机的核保留了1~2个；但是运行了2天后，电脑还是无可避免的死机了。想请教 在使用hammer 优化时，如何保存中间状态，避免长时间运行后电脑死机而 颗粒无收？  [Mod edit: Moved to Chinese language forum (授权与安装 | Zemax Community)]

我的电脑重新安装了系统，然后当我再一次安装zemax后，输入License Number和License activation code后提示的是已经激活，然而在license manager里并没有我的license。请问怎么解决？