Can holographic displays be created without glass or solids?

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SUMMARY

Holographic displays can potentially be created without traditional glass or solid materials by utilizing advanced technologies such as lasers and interference patterns. Current research indicates that these displays are in development, focusing on innovative methods to produce light without conventional mediums. The quality of these devices is still evolving, with ongoing efforts to enhance their functionality and visual fidelity.

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aeronox
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i've tried searching but I'm not sure of the proper name for these things... interested in 'holographic' displays but without the normal glass or anything. i was thinking maybe there is an invention that uses lasers and/or interference to produce light/whatever. do you know? thx
 
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^bump.
I have also wondered what the current level of quality is in constructing one of these devices. I'm sure there are people working on such a thing.
 

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