| 摘要 |
PCT No. PCT/GB88/01080 Sec. 371 Date Jun. 1, 1990 Sec. 102(e) Date Jun. 1, 1990 PCT Filed Dec. 2, 1988 PCT Pub. No. WO89/05507 PCT Pub. Date Jun. 15, 1989.A method to produce a microstructure on glass which is of excellent quality and allows for repeated use of a stamper. The method comprises heating the glass to a surface temperature corresponding to a log viscosity between about 13 to 8 poise, supporting the glass and impressing it with the stamper heated to about the same temperature as the glass so that a microstructure on the heated stamper will deform the surface of the glass to give a corresponding microstructure on the surface of the glass, which when separated from the stamper and cooled in a controlled manner gives the desired surface microstructure on the glass. The method is particularly suitable for forming tracking grooves on optical disk substrates.
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