Originally posted by Leo Enticknap
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Laser interference patterns come in many shapes and forms. Just google it, some look like waves in a pond, others are far more complex. But they happen when a laser hits something that's smaller than its wavelength. The trouble is, we're sending very strong coherent light sources through a bunch of micro-mirrors, so this kind of interference patterns may simply be created by the spaces between the DLP mirrors for example.
People are using actual DLP and LCoS chips to create laser-interference patterns for stuff like holographics, so it is a thing and this thing may just be the cause of the funky shading Steve is seeing here.
Again, this is a theory, but if you have a better one, I'm all ears.
Phosphor machines do have less speckle right out of the box, because two of their primaries are created by exciting a phosphor, which is in turn split by a prism. This light isn't monochromatic anymore like the laser light itself. The remaining primary can still cause some speckle, but at least it won't look like rainbow glitter.
Originally posted by Harold Hallikainen
Originally posted by Carsten Kurz
Originally posted by Carsten Kurz
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