23" LCD LLP Multi Touch Prototype Table (IR Laser)
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Uploader Comments (team140)
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All Comments (8)
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did i see a nipple in one of those pictures?
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@rasmasyean the camera only picks up IR light, small diodes run IR light through a sheet of glass on top of the display, when your fingera are touching the surface ther camera sees them
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cool.
Where are these?
4x780nm IR lasers
PS3 Eye camera with 780nm filter
What do they do?
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Would you have any references (web links, tutorials, communities) or schematics on how to build similar setups based on IR lasers and cameras? Quite new to this, and I'm thinking of making something similar as a pet project.
locker47 1 year ago
@locker47 Check out nuigroup.com
team140 1 year ago
I know that the laser is mounted parallel to the screen, but how does it create a uniform spread across the glass?
jonidimo 1 year ago
@jonidimo It's done with a Laser Line Generator - basically a prism based lens that takes the thin pinpoint and flattens it out to a fan shape.
team140 1 year ago
Actually, there are no IR emitter diodes in this setup. The IR lasers are positioned at all four corners and project a 120* horizontal plane about 1mm above the surface of the screen. As soon as your finger breaks the laser light plane, the camera below picks it up.
team140 2 years ago