| 申请日期 | 2025-07-03 | 申请号 | JP2002221537 |
| 公开（公告）号 | JP4228610B2 | 公开（公告）日 | 2009-02-25 |
| 公开国别 | JP | 申请人省市代码 | 全国 |
| 申请人 | HITACHI CHEMICAL CO LTD | ||
| 简介 | PROBLEM TO BE SOLVED : To provide a rare earth silicate single crystal little in discoloration and enhanced in transparency even if a Ce concentration is a concentration region higher than heretofore. SOLUTION : Al of >0.4 ppm and ≤50 ppm is incorporated into the rare earth silicate single crystal to regulate the transmittance at the Ce concentration of ≥0.6mol% and ≤5mol% and a wavelength of 450nm to ≥75%. COPYRIGHT : (C)2004, JPO | ||
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