FINE LIGHT SOURCE FOR STEREO LITHOGRAPHY, AND LIGHT IRRADIATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a fine light source for a stereo lithographic device having the micro spot size of light for forming a fine three-dimensional formed object, easily manufactured at a low cost and allowing the use of various light sources besides laser, and provide a light irradiation device. SOLUTION: This fine light source for stereo lithography is formed of an optical fiber narrowed in the core diameter of the output end face by heating to extend an optical fiber with a single mode core.