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Vorrichtung zum Fokussieren eines Lichtstrahles in mehreren Fokuspunkten

Device for focussing a light beam in at least two focal points
 
: Behler, K.; Beyer, E.; Schmidt, H.

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Frontpage ()

DE 1990-4024299 A: 19900731
DE 1990-4024299 A: 19900731
DE 4024299 C2: 19930722
G02B0027
Deutsch
Patent, Elektronische Publikation
Fraunhofer ILT ()

Abstract
The description refers to a device for focussing a light beam in at least two focal points, comprising a mirror element, which splits the light beam in a number of partial beams corresponding to the number of focal points. The invention is characterized by the following features: - The mirror element has a number of mirror surfaces corresponding at least to the number of focal points, said mirror surfaces contacting a longitudinal line and whose surface normals along said line subtending an angle greater than or less than 0, - the mirror element is movable to vary the beam intensity in each of the focal points and vary the distance of each focal point relative to the impinging light beam.

: http://publica.fraunhofer.de/dokumente/PX-40694.html