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1. (WO2018030383) SINGLE CRYSTAL PRODUCTION APPARATUS AND SINGLE CRYSTAL PRODUCTION METHOD

Pub. No.:    WO/2018/030383    International Application No.:    PCT/JP2017/028715
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Wed Aug 09 01:59:59 CEST 2017
IPC: C30B 13/24
Applicants: AKUTSU Shin
阿久津 伸
Inventors: AKUTSU Shin
阿久津 伸
Title: SINGLE CRYSTAL PRODUCTION APPARATUS AND SINGLE CRYSTAL PRODUCTION METHOD
Abstract:
The present invention provides a single crystal production apparatus 1 and techniques related thereto, the single crystal production apparatus 1 producing a single crystal by cooling a molten zone M1 that has been formed by a heating unit 4 comprising an infrared generation means 41 and a reflection means 42, wherein the reflection means 42 comprises a rotary ellipsoidal mirror 421a and a concave spherical mirror 421b, and wherein, in the rotary ellipsoidal mirror 421a, the infrared generation means 41 is disposed at one focal point F1, the other focal point F0 side opens, and the one focal point F1 is positioned at the same position as the center of the sphere of the concave spherical mirror 421b.