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28-07-2014
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LED it be - 3D prototyping

Submitter: Johan Pragt / Ronald Halfwerk
Description: Again, ASTRON's 3D printer proved to be very useful for making complex 3D geometrical shapes available during the design phase of an instrument. Tom Raasveld, a graduate student from Hanze Hogeschool Groningen used it for designing a new LED ring for a contactless measuring machine.

Shining more light on a measured object reduces the exposure time, and thus accelerates the measurement process. One of the design goals was to have the intensity of the light evenly distributed over the field of view of the camera. Tom made the calculations for approx. 100 green Light Emitting Diodes (LEDs). The latter had to be grouped around the optics in a ring shape, preferably tilted slightly towards the object.

The measuring machine saw "first light" at the Holland High Tech pavilion in Hannover, April 2014. Branded as YIM3D by ASTRON spin-off company DutchSigma BV, it is bound to have a bright future.
Copyright: foto: Wim van Cappellen / Ronald Halfwerk
 
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