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How would they actually manufacture this? Camera sensors are basically chips, so they are made out of silicon wafers, right? If so, can curved wafers be made?
by adrianmonk 6y ago
How would they actually manufacture this? Camera sensors are basically chips, so they are made out of silicon wafers, right?
If so, can curved wafers be made? Or start with a flat wafer and build up enough layers on top of it so that the surface is curved? Or make several tiny sensor pieces out of flat wafers, put them on a curved surface, and seamlessly connect them together? All of these ideas seem crazy, but they must have some way.
- jmole 6y agobackgrinding - similar to how back illuminated sensors are made: https://en.wikipedia.org/wiki/Back-illuminated_sensor https://en.wikipedia.org/wiki/Back-illuminated_sensor
- alted 6y agoApparently, it's possible to bend existing flat sensors! The backgrinding makes them thin enough to bend. Bending uses high-precision air pressure setups or something. [1] (This surprised me too, because manufacturing on silicon wafers with non-flat surfaces is very infeasible.) [1] https://doi.org/10.1117/12.2536025 https://doi.org/10.1117/12.2536025