Title:
紫外線フィルター被覆
Document Type and Number:
Japanese Patent JP2004504481
Kind Code:
A
Abstract:
The application discloses a two-layered coating system using an ultraviolet absorber in its inner layer (called the blocking layer), furthest away from the source of ultraviolet exposure, with a fluorescent material that reflects ultraviolet radiation back as blue light. The ultraviolet absorber in the inner layer is used in sufficient concentration to have an ultraviolet cutoff, which can be extended with the fluorescent material. The ultraviolet block material of the present invention has transmittance of the light within a range of wavelength of 300-380 nm of 10% or less, preferably transmittance of the light within a range of wavelength of 300-390 nm of 10% or less, and, particularly preferably, transmittance of the light within a range of 300-400 nm of 10% or less, while it has a transmittance of the light within a range of 420-800 nm wavelength of 90% or more, or, preferably, 95% or more.
Inventors:
Cornelius, Leicester, Yi.
Torii Toki
Torii Toki
Application Number:
JP2002514315A
Publication Date:
February 12, 2004
Filing Date:
July 23, 2001
Export Citation:
Assignee:
Cornelius, Leicester, Yi.
Torii Toki
Torii Toki
International Classes:
G02B5/22; B32B7/02; B32B7/06; C08J5/00; C09D5/32; C09D7/12; C09D201/00; C09K3/00; G02B5/20; G02F1/1333; (IPC1-7): C08J5/00; B32B7/02; B32B7/06; C09D5/32; C09D7/12; C09D201/00; C09K3/00; G02B5/22; G02F1/1333
Attorney, Agent or Firm:
Kenji Izumina
Toshiharu Ogawa
Ryozo Yamamoto
Toshiharu Ogawa
Ryozo Yamamoto