| 摘要 |
PCT No. PCT/JP97/03015 Sec. 371 Date Dec. 9, 1999 Sec. 102(e) Date Dec. 9, 1999 PCT Filed Aug. 29, 1997 PCT Pub. No. WO98/09007 PCT Pub. Date Mar. 5, 1998A method of pulling a single crystal includes forming an enlarged portion 26b and a reduced portion 26c under a neck 26a, and fitting the reduced portion for pulling an upsized single crystal. The reduced portion is formed with angle theta s so that the diameter can be measured at all times using an optical measuring means 19 with optical axis angle theta m, such that theta s> theta m. |
