Lensless Optics Debate

Discussions center on whether 'lensless' imaging systems actually use lenses or simulations, comparisons to Fresnel lenses, optical aberrations, and improvements in lens design.

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Keywords

github.io BS PBRT OpticSim.jl wikipedia.org youtu.be IR RGB x.com DIY lens lenses optics optical camera light mirrors telescopes spiders cameras

Sample Comments

4ndrewl • Sep 9, 2022 • View on HN

"Lensless" but actually has multiple lenses?

dylan604 • Mar 4, 2020 • View on HN

Probably shaping the lens/mirror correctly?

avaku • Apr 16, 2014 • View on HN

It does simulate the lens, it says so in the article

dilemma • Sep 10, 2016 • View on HN

Lenses are needed to capture light.

charlescarver • Feb 2, 2022 • View on HN

Could this be considered a higher “resolution” fresnel lens?

civopsec • Dec 20, 2022 • View on HN

Why could the optics be improved?

rolph • Jul 31, 2025 • View on HN

seriously if something was done to manipulate the optical lenses to optimise for usage mode it would be helpful

ot • Aug 4, 2019 • View on HN

It looks like a Fresnel lens taken to the limit.

mmastrac • Sep 10, 2022 • View on HN

More than likely some sort of lens (IR/visual) optical effect.

sudosysgen • Jul 16, 2023 • View on HN

Couldn't you just use a laser and a lens?