Computer Graphics for Scanned Laser Displays

Projected laser displays, such as those for laser light shows, often use computer-drawn graphics, which are scanned onto the screen. These vector drawings have restrictions imposed by the laser projection equipment. Conventional vector graphics programs such as AutoCAD™ do not work well for laser display use. This necessitates laser-specific computer software. Current laser-scanning techniques are introduced in this article, which emphasizes the limitations of scanner technology and suggests remedies. Considerations for the design of laser graphics software are then set forth, and current laser systems are discussed, with an in-depth example using software developed by the authors. Future directions for laser display, scanning technology, and software are also reviewed.