Title:
OPTICAL ELEMENT MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2015/137457
Kind Code:
A1
Abstract:
Provided is an optical element manufacturing method which enables low-cost and efficient manufacturing of a chalcogenide optical element having high performance. Chalcogenide glass is heated and melted in a syringe (31), at least at a syringe tip part (31a), and therefore it is not necessary to process the glass into a preform prior to molding, as in press molding that uses a preform, and processing time can be shortened without wasting materials. Due to this configuration, a lens (LE) which is a chalcogenide glass-type optical element can be manufactured at a low cost and efficiently. According to the manufacturing method of the present invention, melted chalcogenide glass is extruded from the syringe tip part (31a) onto a lower molding-mold (12), and therefore it is easy to transfer the shape of a transfer surface (16a) of the lower molding-mold (12) to the extruded chalcogenide glass, and further, an accurate amount of chalcogenide glass can be supplied in a short amount of time by more accurately controlling the supply of chalcogenide glass, and molding can be carried out precisely in short cycles.
Inventors:
ASHIDA SHUHEI (JP)
HAYAKAWA SHUHEI (JP)
HAYAKAWA SHUHEI (JP)
Application Number:
PCT/JP2015/057334
Publication Date:
September 17, 2015
Filing Date:
March 12, 2015
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
C03B11/00; C03B7/096; C03B7/14; C03B11/12; G02B3/00
Foreign References:
| JPH0692652A | 1994-04-05 | |||
| JPH07165429A | 1995-06-27 |
Attorney, Agent or Firm:
FUKUDA, MITSUHIRO (JP)
Mitsuhiro Fukuda (JP)
Mitsuhiro Fukuda (JP)
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