Title:
プラスチックレンズ及びその製造方法
Document Type and Number:
Japanese Patent JP4369194
Kind Code:
B2
Abstract:
A plastic lens which comprises a plastic lens substrate obtainable by a process which comprises: mixing the following components (A) to (D): (A) a lens material monomer comprising diethylene glycol bisallylcarbonate or a monomer mixture comprising diethylene glycol bisallylcarbonate and monomers copolymerizable with diethylene glycol bisallylcarbonate, (B) an organic peroxide-based polymerization initiator, (C) a cobalt fluid comprising a cobalt compound represented by at least one of CoO.Al2O3 and Co.Al2O4 in a dispersant, and (D) at least one ultraviolet light absorbent selected from 2-hydroxy-4-octyloxybenzophenone, 2,2',4,4'-tetrahydroxy-4-octyloxybenzophenone and 2,2',4'-trihydroxy-4-octyloxybenzophenone; and casting the mixed fluid obtained by the mixing into a mold and polymerizing the fluid to obtain a plastic lens substrate are provided.
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Inventors:
Shinsuke Ito
Masahisa Uesaka
Masahisa Uesaka
Application Number:
JP2003340937A
Publication Date:
November 18, 2009
Filing Date:
September 30, 2003
Export Citation:
Assignee:
HOYA CORPORATION
International Classes:
G02B1/04; G02C7/02; B29C39/02; C08F2/44; C08F18/24; B29K69/00; B29L11/00
Domestic Patent References:
| JP5195445A | ||||
| JP60245607A | ||||
| JP9263694A |
Attorney, Agent or Firm:
Tamotsu Otani