Mold and method of producing the same

Details Mold and method of producing the same Mold and method of producing the same

1998-04-22

2000-12-05

Silverman, Stanley S.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Including step of mold making

264 125, 264219, 216 11, 216 24, 216 57, 216 58, 216 74, 216 77, 216 81, B29D 1100

Patent

active

061562432

ABSTRACT:
(1) Alignment mark transfer portion(s) is/are formed on the transfer molding surface of a mold that is used for press-molding a optical element fixing member and having alignment marks; (2) alignment mark(s) is/are formed on the mold material by dry-etching, and the mold material is worked using the alignment mark(s) as a reference to form the transfer molding surface constituted by a plurality of transfer patterns, in order to obtain a mold for press-molding; and (3) the transfer patterns are formed by dry-etching, or a transfer molding bare surface for transfer patterns is formed by dry-etching and a mold release film is formed thereon to reflect the shape of the transfer molding base surface, in order to obtain a mold for press-molding.

REFERENCES:
patent: 4294649 (1981-10-01), Sarka
patent: 4842633 (1989-06-01), Kuribayashi et al.
patent: 5348616 (1994-09-01), Hartman et al.
patent: 5723174 (1998-03-01), Sato
patent: 5770120 (1998-06-01), Kamihara et al.

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