Abstract: A computer monitor is provided with a chassis including a base, a rear support fixed to the base and extending vertically upwardly therefrom, and a front support connected to a cathode-ray tube. The front support and the cathode-ray tube are mounted above the base and spaced apart therefrom for pivotal movement of the front support and cathode-ray tube relative to the base and rear support about a pivot axis disposed at the upper front portion of the monitor. The monitor can be releasably maintained in any one of a plurality of angular positions. The monitor housing comprises a first section surrounding the base and rear support and a second section completely detached from the first section and surrounding the front support.

Abstract: A light pipe for use in an optical mouse comprises a block of light transmitting fibers comprising a plurality of parallel light transmissive regular polygonal fiber cores each surrounded by light transmissive cladding having a lower index of refraction than the core. The ratio of the width of the core to the thickness of the cladding ranges from 4 to 24.