METHOD FOR MANUFACTURING OPTICAL ELEMENT AND MOLD SET

PROBLEM TO BE SOLVED: To exactly control a non-contact state of a mold and a molding raw material without increasing costs such as production and repair of a mold set, and thereby to raise quality of an optical element fabricated.SOLUTION: In a mold set 16, an upper mold 18 as a fixed type mold incl...

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Bibliographische Detailangaben
1. Verfasser:	NAKATANI NORIO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Zusammenfassung:	PROBLEM TO BE SOLVED: To exactly control a non-contact state of a mold and a molding raw material without increasing costs such as production and repair of a mold set, and thereby to raise quality of an optical element fabricated.SOLUTION: In a mold set 16, an upper mold 18 as a fixed type mold including a flange part 18a and a lower mold 20 are inserted to oppose together to a sleeve 22 which includes a material holding member 26 which supports a glass material 30 in an inside thereof, and the glass material 30 in the sleeve 22 is heated at a non-contact state to a molding surface 18c of the upper mold 18 and a molding surface 20c of the lower mold 20. In the mold set 16, a spacer ring 40 having a thickness size t is applied between the flange part 18a of the upper mold 18 and an upper end face 22a of the sleeve 22, the spacer ring 40 having a thickness size t is used according to a change of a distance L of the flange part 18a of the upper mold 18 and the molding surface 18c, and thereby a gap g1 between the molding surface 18c and the glass material 30 is controlled uniformly.