| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a glass polarizer having a high extinction ratio, low insertion loss and a low phase difference in a wide band. <P>SOLUTION: A method for manufacturing a glass polarizing element comprises: a melting step of melting glass adjusted so that a glass component after melting the glass contains silver ions of 0.2-0.3 wt.% and chlorine ions of 0.25-0.35 wt.%; a silver chloride depositing step of uniformly depositing silver chlorides inside the melted glass by heat-treatment at a temperature lower by 10-50°C than the softening point of the glass; a preform manufacturing step of processing the glass into a desired size; a drawing step of heating and drawing the preform and elongating the silver chloride particles in an uniaxial direction to form a glass sheet; and a reduction step of reducing the elongated silver chlorides in the glass sheet under a pressure equal to or less than the atmospheric pressure. <P>COPYRIGHT: (C)2013,JPO&INPIT |
