Peter J. M. Janssen

Apparatus for reading a disc-shaped record carrier with plural scanning spots for stable radial tracking

Digital image projector with oriented fixed-polarization-axis polarizing beamsplitter

SERVO SYSTEM FOR READING FROM A DISC-SHAPED RECORD CARRIER CONTAINING SIGNALS CODED IN OPTICAL FORM

Integrating lens array and image forming method for improved optical efficiency

Opto-electronic apparatus for inscribing and/or reading recording tracks by means of a radiation beam

Playback unit for a long-playing record of a time division multiplexed audio signal

Opto-electronic apparatus for writing and/or reading recording tracks by means of a radiation beam

Optical disc pressure-collapsible cover

Device for reading a disk-shaped record carrier with time base correction

Device for translating a slide