Flashlight with TIR lens

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provisory
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Flashlight with TIR lens

Post by provisory » Sat Jul 06, 2019 11:46 am

I modelled the optics to be physically correct. It has a small LED and a TIR (Total Internal Reflection) lens.

BiDir Metropolis (2850 samples):
FlashLight-bidir-metropolis.jpg

Hybrid (also on CPU, 4470 samples):
FlashLight-hybrid-sobol.jpg

Both were denoised with OIDN.

Hybrid seems to be faster (in convergence), but unfortunately, there are significant differences between the result images.

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epilectrolytics
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Re: Flashlight with TIR lens

Post by epilectrolytics » Sat Jul 06, 2019 8:54 pm

Good modelling and nice setting but the inhomogeneous light cone looks weird (in both versions).
Sorry to be of no help but I never attempted precise and correct settings like this.
I'd try to get away with an IES file ... :)
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kintuX
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Re: Flashlight with TIR lens

Post by kintuX » Sun Jul 07, 2019 12:45 am

Fancy! Looks like a merchandise material from the new Star Wars... everybody has one :lol: but this one is white XXL 8-)

provisory
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Re: Flashlight with TIR lens

Post by provisory » Sun Jul 07, 2019 8:23 am

epilectrolytics wrote:
Sat Jul 06, 2019 8:54 pm
Good modelling and nice setting but the inhomogeneous light cone looks weird (in both versions).
Thanks, and you're right... I wanted some variance in the lightbeam, so I used heterogeneous volume with a noise pattern, but It didn't become the best.

provisory
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Re: Flashlight with TIR lens

Post by provisory » Sun Jul 07, 2019 8:32 am

kintuX wrote:
Sun Jul 07, 2019 12:45 am
Fancy! Looks like a merchandise material from the new Star Wars... everybody has one :lol: but this one is white XXL 8-)
:D

Actually this flashlight is smaller than a lightsaber.
Image


Looks like the scene is missing some reference object for size comparison.

Luximage
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Re: Flashlight with TIR lens

Post by Luximage » Sun Jul 07, 2019 8:42 am

Very nice flashlight(Luxcore powered lighting).

provisory
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Re: Flashlight with TIR lens

Post by provisory » Sun Jul 07, 2019 9:17 am

Thanks!

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B.Y.O.B.
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Re: Flashlight with TIR lens

Post by B.Y.O.B. » Sun Jul 07, 2019 9:22 am

provisory wrote:
Sun Jul 07, 2019 8:23 am
I wanted some variance in the lightbeam, so I used heterogeneous volume with a noise pattern, but It didn't become the best.
What texture did you use?
I would try a larger scale clouds texture, or maybe even a smoke simulation.
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provisory
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Re: Flashlight with TIR lens

Post by provisory » Sun Jul 07, 2019 11:31 am

B.Y.O.B. wrote:
Sun Jul 07, 2019 9:22 am
What texture did you use?
I would try a larger scale clouds texture, or maybe even a smoke simulation.
If I remember correctly it was Improved Perlin.
I'll get back to it after I buy a faster PC. On my current old Core i5 it was painfully slow to test the settings.

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