Method and device for producing optical part

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7332110
APP PUB NO 20050212154A1
SERIAL NO

11005208

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ATTORNEY / AGENT: (SPONSORED)

Importance

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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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HOYA CORPORATIONTOKYO1747

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inoue, Kazuo Tokyo, JP 136 1809
Saito, Kiyohiro Tokyo, JP 30 374
Uehara, Tadayoshi Sagamihara, JP 7 54

Cited Art Landscape

Patent Info (Count) # Cites Year
 
HOYA CORPORATION (2)
5948327 Lens injection-compression-molding method 6 1997
* RE38617 Method of injection molding plastic lens 5 2001
 
SONY CORPORATION (1)
* 5893998 Boundary apparatus for optical component molding 14 1997
 
Techna Vision Incorporated (1)
* 4693446 Gasket for molding plastic lenses 95 1985
 
ASIA OPTICAL INTERNATIONAL LTD. (1)
* 7147454 Optical lens molding apparatus and precision molding apparatus 4 2005
 
Q2100, Inc. (1)
* 6730244 Plastic lens and method for the production thereof 31 1995
 
Mezhotraslevoi Nauchno-Tekhnichesky Komplex "Mikrokhirurgia Glaza" (1)
* 6201036 Light-curable polymer material, method for making an elastic intraocular lens, and an elastic intraocular lens 3 1999
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
E-PIN OPTICAL INDUSTRY CO., LTD. (4)
7957081 Optical glass lens set and manufacturing method thereof 0 2009
* 2009/0231,688 OPTICAL GLASS LENS SET AND MANUFACTURING METHOD THEREOF 1 2009
7944630 Lens holder for stacked lens module and manufacturing method thereof 1 2009
7944633 Lens holder for alignment of stacked lens module and manufacturing method thereof 0 2009
 
FUJI PHOTO FILM CO., LTD. (1)
* 2006/0157,897 Molding method of plastic materials 1 2005
 
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) (2)
* 7820082 Method for adding a thermoset overmold layer to a lens within a mold 3 2007
* 2008/0317,950 Method for adding a thermoset overmold layer to a lens within a mold 3 2007
* Cited By Examiner

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