Antonius Hendricus Maria Holtslag

The Fast Intelligent Tracking (F!T) tube: A CRT without a shadow mask

The F!T tube is a new type of CRT without a shadow mask. The primary function of the mask, color selection, is taken over by an electronic control system that guides the electron beams over the correct phosphor lines. The position of the beams is detected by means of dedicated structures on the faceplate. Proof of the principle has been shown in single- and triple-beam 17- and 32-in. tubes.

44.1: The Fast Intelligent Tracking (F!T) Tube: A CRT without a Shadow Mask

The F!T tube is a new type of CRT without a shadow mask. The primary function of the mask, color selection, is taken over by an electronic control system that guides the electron beams over the correct phosphor lines. The position of the beams is detected by means of dedicated structures on the faceplate. Proof of the principle has been shown in single- and triple-beam 17″ and 32″ tubes.

Scanning optical microscopy: a powerful tool in optical recording

A Scanning Optical Microscope (SOM) provides valuable information on the physical and optical properties of an optical recording system. In particular, alternative detection modes such as Differential Phase Contrast detection provide a means of separating the phase and amplitude parts of the local reflectivity, and the SOM is thereby able to distinguish some of the processes involved in optical recording. In this paper we describe how a SOM can be used in optical recording research and development, and give examples of its application.

CD-compatible erasable disk

We have experimentally demonstrated the feasibility of a fully backward compatible erasable Compact Disc. Such discs require new phase change materials; we have identified such materials by means of novel selection criteria, finding that a range of GeTeSe alloys possess both the required recording and optical properties.