OPTICAL HEAD DEVICE FORMED FROM THERMOPLASTIC RESIN, MODULE FOR ELECTRONIC PARTS, BUILDING MATERIAL, HOUSEHOLD UTENSIL AND HEALTH-MEDICAL INSTRUMENT

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive optical head which can be miniaturized and wherein the deterioration of the optical characteristics of the optical head due to the heat production from a laser beam sending machine, an electromag netic coil and the like and deterioration of driving acceleration of the head are prevented, in a magneto-optical disk.;SOLUTION: In the magneto-optical disk provided with a carriage moving an optical head movable part forwards and backwards in the tracking direction and a lens holder provided by winding a focus coil and a tracking coil held to the carriage in the state of being capable of rocking and holding an objective lens, the lens holder, the carriage for fixing the lens holder, electronic parts and a parts supporting material are formed from a thermoplastic resin to be a resin material having high heat conductivity. Base materials are composed of the thermoplastic resin, for a building material, electronic parts, a household utensil and a health-maintenance instrument.;COPYRIGHT: (C)2002,JPO