Thomson Licensing

Barco Control Rooms Gmbh

Sören Dambach

Hartmut Richter

Harald Lang

The present invention relates to an appliance for reading from and/or writing to optical recording mediahaving a first laser diode LDfor producing a first scanning beam ASat a first wavelength &#x3bb;and having a second laser diode LDfor producing a second scanning beam ASat a second wavelength &#x3bb;, with the scanning beams AS, ASrunning along a common optical axis, scanning an information layeron the recording mediumand falling on a single photodetectorin order to produce an information signal IS, with a beam combination element being arranged at one point on the optical axis. According to the invention, the beam combination element is a diffraction grating

Device for reading and/or writing optical recording media

In order to align the optical components of a projection apparatus (), more particularly a rear projection apparatus of a projection wall, wherein the projection apparatus () comprises a light mixing rod (), it is proposed to arrange an alignment deflecting mirror () in the illumination path of the imaging device () between the lamp () and the light mixing rod (), wherein said alignment deflecting mirror () can be adjusted by means of servo motors ().

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Karlsruhe, Germany

Sören Dambach