US Patent No: 7,332,110

Number of patents in Portfolio can not be more than 2000

Method and device for producing optical part

ALSO PUBLISHED AS: 20050212154

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Abstract

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An annular insert (4) is arranged in the optical component molding cavity of a mold to surround an outer periphery of raw material resin in a direction in which the resin is distributed in the cavity to limit the distribution of the raw material resin and define an outer profile of a lens (L). With this arrangement, it is only necessary to provide raw material resin only by a quantity equal to the volume of the region surrounded by the molding surfaces of upper and lower mold inserts (14, 24) and the inner peripheral edge of the annular insert (4) of the mold, so that the required volume of the raw material resin can be reduced. Since the pressure is preserved at the outer periphery of the distributed resin by the presence of the annular insert (4), the residual strain of the resin is minimized to prevent generation of sink mark, thereby providing excellent optical characteristics on the lens (L).

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HOYA CORPORATIONTOKYO1947

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inoue, Kazuo Tokyo, JP 161 1616
Saito, Kiyohiro Tokyo, JP 32 335
Uehara, Tadayoshi Sagamihara, JP 8 54

Cited Art Landscape

Patent Info (Count) # Cites Year
 
HOYA CORPORATION (2)
5,948,327 Lens injection-compression-molding method 6 1997
RE38617 Method of injection molding plastic lens 3 2001
 
ASIA OPTICAL INTERNATIONAL LTD. (1)
7,147,454 Optical lens molding apparatus and precision molding apparatus 4 2005
 
MEZHOTRASLEVOI NAUCHNO-TEKHNICHESKY KOMPLEX "MIKROKHIRURGIA GLAZA" (1)
6,201,036 Light-curable polymer material, method for making an elastic intraocular lens, and an elastic intraocular lens 1 1999
 
NATIONAL PATENT DEVELOPMENT CORPORATION (1)
4,208,365 Method and apparatus for molding toric contact lenses 40 1978
 
Q2100, INC. (1)
6,730,244 Plastic lens and method for the production thereof 31 1995
 
SONY CORPORATION (1)
5,893,998 Boundary apparatus for optical component molding 14 1997
 
Techna Vision, Inc. (1)
4,693,446 Gasket for molding plastic lenses 94 1985

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
E-PIN OPTICAL INDUSTRY CO., LTD. (3)
7,957,081 Optical glass lens set and manufacturing method thereof 0 2009
7,944,630 Lens holder for stacked lens module and manufacturing method thereof 0 2009
7,944,633 Lens holder for alignment of stacked lens module and manufacturing method thereof 0 2009
 
ESSILOR INTERNATIONAL COMPAGNIE GENERALE D'OPTIQUE (1)
7,820,082 Method for adding a thermoset overmold layer to a lens within a mold 3 2007

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