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The other comment mentions a gobo which is the industrial solution to this. But I am confused: you want to project a ring? There are all sorts of arrangements
by dekhn 4y ago
The other comment mentions a gobo which is the industrial solution to this.
But I am confused: you want to project a ring? There are all sorts of arrangements to achieve this but really you want a bright led, a collimated lens, and a mask. Or just use a gobo, or a light projector showing an image of a ring.
- divan 4y agoRight, ring is the right word :) (well, in the more perfect setup, I'd love to have more complex but based on the ring shapes, but ring would be a good a start). LED+collimated lens and a mask sounds OK, but two questions: a) probably also need mirror, right? the device should be small and placed on the floor itself (you can't leave it or mount). b) mask is for, well, masking out the light from the center of the circle? Part of the challenge here is to make the ring as bright as possible (could be used in pretty bright environments), so ideally no light coming out from the optic system should be wasted (masked). Again, not sure it's even possible.