EVAPORATION SOURCE, PROCESS FOR PRODUCING OPTICAL MEMBER, AND OPTICAL MEMBER

摘要

This invention provides an evaporation source comprising a nonwoven fabric formed of a silicon oxide-containing fiber for holding an organic vapor deposition material, characterized in that the thermal conductivity of the nonwoven fabric is 0.01 to 1.0 Wm-1K-1. There are also provided a process for producing an optical member, comprising the step of heating the above evaporation source to vapor deposit an organic vapor deposition material onto the surface of an optical member, and an optical member produced by the production process. There are further provided a process for producing an optical member, which can stably vapor deposit a vapor deposition material without a significant temperature change, can form a vapor deposited film having even film thickness and concentration, and can produce an optical member having high performance as a vapor deposited film at low cost, and an optical member and an evaporation source for use in them.