Title:
LENS CAP PRODUCTION METHOD, LENS CAP PRODUCTION DEVICE, AND LENS CAP
Document Type and Number:
WIPO Patent Application WO/2020/004129
Kind Code:
A1
Abstract:
This lens cap production device (20) is provided with: a first mold (21) which serves as a fixed mold; and a second mold (22) which serves as a movable mold. The first mold (21) has formed therein a molding surface (28) which serves as a mold form when a lens part (3) is provided to a cap base material (2). The molding surface (28) is provided with: a stepped recess (29) which serves as a mold form for the lens part (3); and a support surface (33) which supports a crown (5) of the cap base material (2) during the formation of the lens part (3). The stepped recess (29) is formed in so-called countersunk shape.
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Inventors:
TOMITA MITSURU (JP)
Application Number:
PCT/JP2019/024022
Publication Date:
January 02, 2020
Filing Date:
June 18, 2019
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO (JP)
International Classes:
G02B7/02; G02B3/00; C03B11/00
Foreign References:
| JP2006208928A | 2006-08-10 | |||
| JP2006285109A | 2006-10-19 | |||
| JPS6063743A | 1985-04-12 |
Attorney, Agent or Firm:
ONDA Makoto et al. (JP)
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