xrt
xrt copied to clipboard
kklmn
ParabolicalMirror
Hello, In xrtQook, I am building a (cylindrical)parabolical mirror with x^2=4py, p=0.12mm. Mirror center is at y=140.12mm, with mirror length 100mm. I thought it should be very simple, but can't build the mirror correctly and can't figure out the reason. I attached the mirror drawing and xml files here. Thanks for help.
Hi,
I am building a (cylindrical)parabolical mirror with x^2=4py
Where and how do you use this equation?
What is your question?
Appreciate your prompt reply. I use the equation to calculate the mirror center (x,y,z) and LimphysX() used in xml file to build the parabolical mirror. My question is how I can build this parabolical mirror in xrtQook, with the above given parameters. Using my attached xml file, when I click xrtGlow sunglass icon in xrtQook, the propagation at the bottom green bar will stop at 66%, and xrtGlow window never show up.
And why do you think parabolicalMirrorParam uses the same equation? It does have a parameter p. Why do you give it the value of your p (from your equation)?
I believe they are the sections I made the mistake, but I am not clear what is the correct way to do it. In manual , I read " focal distance p", that is why I though it is the same p as in my equation. I also tried using f(0,0.12,0) without any luck.
Would you please give a simple xml file sample for parabolic mirror? I can't find any. Thanks a lot.
The focal distance of an optical element is the distance between the center of that element and a focus. Conventionally, we denote p as the upstream focal distance and q as the downstream focal distance. For a parabolic OE, only one of the two exists. Alternatively to p and q you can define f1 and f2 as 3D points in the global system.
If you search *.py files for ParabolicalMirrorParam, you can find a usage example in tests/raycing/test_param_mirror.py.
Thanks. The test_param_mirror.py helps me to understand the parameters.
Now I copied all the parabolic parameters from test_param_mirror.py to xrtQook as below, but this mirror still can't finish initialization and xrtGlow doesn't show up. I had no difficult to add the elliptical mirror(also copied from test_param_mirror.py) in xrtQook and get xrtGlow. Very strange.
Hello, Is it possible there are some issue with Parabolic mirror in xrtQook? I have run several parabolic mirrors with python (.py files), all of them work correctly and show expected results. Then I copied source, optic and screen parameters from these .py files to xrtQook, none of them can build a parabolic mirror successfully for xrtGlow to show. Is it possible to have a look at this issue at your convenient time? Thanks,