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Hi

Just a small test with fresnel lenses.

The 3 lenses collimate the light from the red, green and blue emitters and project the light onto the wall.
The different sizes of the light on the wall is caused by differences in the focal length of the lenses. Green being the one with the longest focal length.
The result matches the reference simulation from the high end raytracer I used to generate the fresnel lenses.
The funny looking colors on the floor was unexpected though.

BR
Dane

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A few images showing a cross-secton of a fresnel lense (The green to the left)

The raytracing (Not maxwell). Showing only the rays hitting the floor.

And finally the raytrace result for the floor to verify the lighting on the floor

Fortunately it seemed that Maxwell got it right

Whiskey : No it is not Zemax

It is simply amazing to see how well Maxwell can simulate optical systems.

BR Dane

Dane, this is wonderful and seems to me quite accurate!
Great setup, CONGRATULATIONS!

For the ones who want to know what a Fresnel Lens is:
http://hyperphysics.phy-astr.gsu.edu/hb ... llens.html

Good job on this one too Dane keep on testing like this, they're very interesting to see and to get more info about how they're done and it reminds me alot about physics class in school long time ago hehe

/ Max

Thank you all, for your kind words.

Actuallly this is what I do in my everyday work. Getting light to go from one place to another, using lightguides, fresnel lenses, clear plastic parts, reflectors etc. Previously I have only been able to present technical simulations to the clients, but now Maxwell has made it possible to visualize the performance of optical designs, in an easy and accurate way
And theese small tests show that the accuracy of Maxwell is good, especially when it is compared with the technical simulation.

BR Ole