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Title:
COATING FILM FOR OPTICAL COMPENSATION, AND OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2006/085449
Kind Code:
A1
Abstract:
This invention provides a coating film for optical compensation at low cost without providing a troublesome film forming step, and an optical element having the same properties as attained by the provision of film application step despite the fact that any troublesome work of film application and the like is not required. There is also provided a method for the formation of a coating film for optical compensation. In the coating film, the value obtained by (nx + ny)/2 - nz is negative, and the absolute value is larger. In the equation, nx represents the maximum in-plane refractive index, ny represents the minimum in-plane refractive index, nz represents the refractive index in thickness-wise direction, and d represents the film thickness. An optical element may be produced by using the method for the formation of a coating film. The coating film for optical compensation is characterized by comprising any polymer of cellulose N-substituted carbamate or an aromatic vinyl polymer.

Inventors:
TSUKAMOTO MICHINORI (JP)
SEKIGUCHI YASUHIRO (JP)
HIIRO TOMOKI (JP)
FUJII SADAO (JP)
Application Number:
PCT/JP2006/301496
Publication Date:
August 17, 2006
Filing Date:
January 31, 2006
Export Citation:
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Assignee:
KANEKA CORP (JP)
TSUKAMOTO MICHINORI (JP)
SEKIGUCHI YASUHIRO (JP)
HIIRO TOMOKI (JP)
FUJII SADAO (JP)
International Classes:
G02B5/30; G02F1/13363
Foreign References:
JP2001091746A2001-04-06
JP2004004474A2004-01-08
JP2004325971A2004-11-18
JP2004290963A2004-10-21
JP2003238601A2003-08-27
JP2001131291A2001-05-15
Attorney, Agent or Firm:
KANEKA CORPORATION (Kita-ku Osaka-shi, Osaka 88, JP)
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