Robert Boschgmbh

Alexander Huebel

Ning Wang

Christoph Schelling

Stefan Pinter

Hartmut Kueppers

Jan Niklas Caspers

Tobias Graf

Uma Krishnamoorthy

Zilun Gong

The disclosure relates to a device for providing a multi-colored light beam for a projector. The device comprises a first light source, a second light source, a waveguide element, a beam forming device and a structure element. The waveguide element forms a first waveguide for guiding light from the first light source, a second waveguide for guiding light from the second light source and a coupling out region for coupling light out of the first waveguide and the second waveguide. The beam forming device is designed to form the multi-colored light beam using the light coupled out of the coupling out region. The first light source, the second light source, the waveguide element and the beam forming device are arranged on the structure element.

Device and method for providing a multi-coloured light beam for a projector, projector and method of production

An optical switch includes a bus waveguide supported by a substrate, an actuation electrode supported by the substrate, the actuation electrode having fins that protrude in a direction perpendicular to the substrate and to the bus waveguide, and a reaction electrode having interdigitated fins configured to form a comb drive with the actuation electrode. When a voltage difference between the reaction electrode and the actuation electrode is less than a lower threshold, the reaction electrode is positioned a first distance from the bus waveguide, when the voltage difference between the reaction electrode and the actuation electrode is greater than an upper threshold, the reaction electrode is positioned a second distance from the bus waveguide, and the second distance is less than the first distance.

MEMS optical switch with stop control

An optical switch includes a first bus waveguide supported by a substrate, an optical antenna suspended over the first bus waveguide via a spring, and interdigitated electrodes coupling the substrate with optical antenna and configured to control a position of the optical antenna relative to the first bus waveguide. When a voltage difference applied to the interdigitated electrodes is less than a lower threshold, the optical antenna is at a first position offset from the first bus waveguide, when the voltage difference applied to the interdigitated electrodes is greater than an upper threshold, the optical antenna is at a second position offset from the first bus waveguide, and the offset at the second position is greater than at the first position.

In-plane MEMS optical switch

An optical switch includes a bus waveguide and an optical antenna supported by a substrate, a first and second coupling waveguide, a first and second actuation electrode, and a first and second reaction electrode. The first coupling waveguide is disposed parallel with the substrate and aligned with the bus waveguide. The first reaction electrode is coupled with, and adjacent to, the first coupling waveguide. The second coupling waveguide is optically connected with the first coupling waveguide and suspended over and configured to optically couple with the optical antenna. The second reaction electrode is coupled with, and adjacent to, the second coupling waveguide. The first and second actuation electrodes are supported by the substrate and configured to control the position of the first and second coupling waveguide, respectively, relative to the bus waveguide and optical antenna, via the first and second reaction electrodes.

MEMS optical switch with dual cantilever couplers

An optical switch includes a bus waveguide supported by a substrate, a coupling waveguide suspended over the bus waveguide, a reaction electrode coupled with, and adjacent to, the coupling waveguide, an actuation electrode supported by the substrate and configured to control a position of the coupling waveguide relative to the bus waveguide via the reaction electrode, and an optical antenna coupled with the coupling waveguide and disposed at a fixed distance from the bus waveguide. When a voltage difference between the reaction electrode and the actuation electrode is less than a lower threshold, the coupling waveguide is positioned a first distance from the bus waveguide, when the voltage difference between the reaction electrode and the actuation electrode is greater than an upper threshold, the coupling waveguide is positioned a second distance from the bus waveguide, and the second distance is less than the first distance.

Growing community of inventors

Leonberg, Germany

Alexander Huebel