Flashlight with TIR lens

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provisory
Posts: 235
Joined: Wed Aug 01, 2018 4:26 pm

Flashlight with TIR lens

Post by provisory »

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.
epilectrolytics
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Re: Flashlight with TIR lens

Post by epilectrolytics »

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 ... :)
kintuX
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Re: Flashlight with TIR lens

Post by kintuX »

Fancy! Looks like a merchandise material from the new Star Wars... everybody has one :lol: but this one is white XXL 8-)
provisory
Posts: 235
Joined: Wed Aug 01, 2018 4:26 pm

Re: Flashlight with TIR lens

Post by provisory »

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
Posts: 235
Joined: Wed Aug 01, 2018 4:26 pm

Re: Flashlight with TIR lens

Post by provisory »

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
Posts: 165
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Re: Flashlight with TIR lens

Post by Luximage »

Very nice flashlight(Luxcore powered lighting).
provisory
Posts: 235
Joined: Wed Aug 01, 2018 4:26 pm

Re: Flashlight with TIR lens

Post by provisory »

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

Post by B.Y.O.B. »

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.
provisory
Posts: 235
Joined: Wed Aug 01, 2018 4:26 pm

Re: Flashlight with TIR lens

Post by provisory »

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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