Dear experts,

I am an electronics engineer and trying to perform optical simulation using OpticStudio. I was able to model a UVC source and able to perform raytracing on single and array of LEDs. I am good until this.

Now, I am trying to introduce a quartz window between the source and see how the detector would experience the effects. I would assume the quartz window will add reflectionr and refraction. I tried using a rectangular volume and assigned the material as quartz. I could only see the rays getting refracted and nothing was reflected back. Can someone help me what I am doing wrong or what is the right way to do this?