| ... | ... | @@ -108,42 +108,6 @@ pyrateoptics.listOptimizableVariables(opticalsystem, max_line_width=75) |
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pyrateoptics.draw(opticalsystem, rays)
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# This function can get a list of raypath argument to draw rays.
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```
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# Some Impressions
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An optimized plano-plano GRIN lens with 1.6 micron RMS centroid spot radius.
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An achromat.
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Mirror system with pilot rays.
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Circular field sampling in FreeCAD Gui.
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Comparison of real raytrace (blue) with parabasal raytrace (orange).
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Equal sided prism with blue and red light being dispersed.
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Grin material with coordinate system tilted against global coordinate system.
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Water droplet which bends the light of different wavelengths differently in order to create a rainbow.
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The material data was obtained from https://refractiveindex.info by Mikhail N. Polyanskiy.
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# Frequently Asked Questions
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| ... | ... | @@ -165,7 +129,9 @@ https://github.com/mess42/pyrate/issues/142 |
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The FreeCAD interface has more or less the status of a mockup and is broken since the last large refactoring in 2017. Until now there is no good idea about getting a not-so-tight coupling between FreeCAD classes and pyrate classes. Since the API is not quite settled it is really difficult to start with a full fledged FreeCAD interface without rewriting all the stuff when there is a slight API change appearing. All ideas here are appreciated. If you are interested in digging into the matter, please have a look in the `freecad/PyrateWorkbench` directory.
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https://github.com/mess42/pyrate/issues/136
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https://github.com/mess42/pyrate/issues/134
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https://github.com/mess42/pyrate/issues/91
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## How does the optimizer work?
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| ... | ... | @@ -175,19 +141,60 @@ The optimizer decomposes in backend and frontend whereas the backend determines |
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There were several discussions on that in the following issues:
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https://github.com/mess42/pyrate/issues/140
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https://github.com/mess42/pyrate/issues/137
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## How to create a full sphere lens?
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Since the `Conic` surface solves the ray intersection equation analytically and the two intersection points in a sphere correspond to the two roots of the quadratic equation, one cannot properly use two subsequent `Conic`s and expect a proper raytracing. In issue XX and our own research, we came up with a few workarounds:
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Since the `Conic` surface solves the ray intersection equation analytically and the two intersection points in a sphere correspond to the two roots of the quadratic equation, one cannot properly use two subsequent `Conic`s and expect a proper raytracing. In one issue and our own research, we came up with a few workarounds:
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* use a slightly deformed second surface (introduce radius deviation or slight conic const) -> this is no optimal solution when you need an exact sphere
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* *use an intermediate plano surface* (this is the most reliable solution without any downsides)
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* use the `Asphere` type surface to avoid the quadratic analytical solution problem and use a numerical solver instead
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* use an intermediate plano surface (this is the most reliable solution without any downsides)
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* use a slightly deformed second surface (introduce radius deviation or slight conic const) -> this is no optimal solution when you need an exact sphere
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https://github.com/mess42/pyrate/issues/149
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https://github.com/mess42/pyrate/issues/50
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# Some Impressions
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An optimized plano-plano GRIN lens with 1.6 micron RMS centroid spot radius.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
An achromat.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mirror system with pilot rays.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Circular field sampling in FreeCAD Gui.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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Comparison of real raytrace (blue) with parabasal raytrace (orange).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equal sided prism with blue and red light being dispersed.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Grin material with coordinate system tilted against global coordinate system.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Water droplet which bends the light of different wavelengths differently in order to create a rainbow.
|
|
|
|
The material data was obtained from https://refractiveindex.info by Mikhail N. Polyanskiy.
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# Formulas
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If you want to use formulas in issues or wikis, then the following example would be useful:
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