Scientists Create Salt Grain-Sized Hi-Res Camera

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microb
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Scientists Create Salt Grain-Sized Hi-Res Camera

#1 Post by microb » Wed Dec 01, 2021 3:44 pm

https://80.lv/articles/scientists-creat ... res-camera

"A team of researchers from Princeton and the University of Washington has managed to create a tiny camera the size of a grain of salt that can capture high-resolution, full-color images measuring 720 x 720 pixels. According to the research papers, the camera is made with a metasurface that captures light, which could be scaled up to turn entire surfaces into sensors. The circular pattern in the camera is half-millimeter wide and contains 1.6 million cylinders that bend light so that the array as a whole shapes the optical wavefront. Signal processing algorithms then produce an image from that data.

What's more, the team says that the camera is quite cheap and simple to mass-produce. They’re made of silicon nitride, and the nanostructures of the surface can be produced using deep ultraviolet lithography, a technique already used to make semiconductors."
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Dubious
Posts: 426
Joined: Sun May 09, 2021 7:55 pm

Re: Scientists Create Salt Grain-Sized Hi-Res Camera

#3 Post by Dubious » Wed Dec 01, 2021 4:57 pm

Another area in which science fiction is moving toward reality. How long will it be before glass lenses are obsolete?

MichaelG.
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Location: North Wales

Re: Scientists Create Salt Grain-Sized Hi-Res Camera

#4 Post by MichaelG. » Wed Dec 01, 2021 5:05 pm

Astonishing … Thanks for the link.

Although one might perhaps question the veracity of the claim that 720 x 720 is ‘High Resolution’
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high-resolution, full-color images measuring 720 x 720 pixels
MichaelG.
Too many 'projects'

microb
Posts: 729
Joined: Wed Mar 27, 2019 6:39 am

Re: Scientists Create Salt Grain-Sized Hi-Res Camera

#5 Post by microb » Wed Dec 01, 2021 6:19 pm

Need to check what focal length's are possible. For example, can an objective be reduced to this grain of sand size? Has anyone played with the holographic lenses from Edmund Optics? Basically if you're fine with polarized light only, a holographic print can be used to lens light.

MichaelG.
Posts: 3976
Joined: Mon Apr 10, 2017 8:24 am
Location: North Wales

Re: Scientists Create Salt Grain-Sized Hi-Res Camera

#6 Post by MichaelG. » Wed Dec 01, 2021 7:34 pm

Just found more detail here: https://www.nature.com/articles/s41467-021-26443-0

MichaelG.
Too many 'projects'

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