Title:
OPTICAL INTERFERENCE COATING
Document Type and Number:
WIPO Patent Application WO/2010/032783
Kind Code:
A1
Abstract:
A metal layer (L1) is formed on an underlying substrate (3), and an interference coating layer (Ls) laminating coating layers (L2-L8) having different refractive indexes (n) is provided thereon. A transparent protective layer (L9) is formed on the surface of the interference coating layer (Ls). The interference coating layer (Ls) imparts wavelength-dependent intensity modulation to reflected light, and the quantity of reflected light is kept low by light absorption of the coating layers (L2, L4, L8) thus providing an exterior color having an unique tone of color. When the complex refractive index N of the coating layers (L2, L4, L8) is represented by “N=n-ik” using the refractive index n, an extinction coefficient k, and an imaginary number i, following relations are satisfied: “1.36≤n≤3.5” and “0.1≤k≤6”
Inventors:
TANAKA KAZUMITSU (JP)
NAMBU NOBUMASA (JP)
KITAMURA TARO (JP)
NAMBU NOBUMASA (JP)
KITAMURA TARO (JP)
Application Number:
PCT/JP2009/066249
Publication Date:
March 25, 2010
Filing Date:
September 17, 2009
Export Citation:
Assignee:
LIKE CO LTD (JP)
TANAKA ENGINEERING INC (JP)
TANAKA KAZUMITSU (JP)
NAMBU NOBUMASA (JP)
KITAMURA TARO (JP)
TANAKA ENGINEERING INC (JP)
TANAKA KAZUMITSU (JP)
NAMBU NOBUMASA (JP)
KITAMURA TARO (JP)
International Classes:
G02B5/28
Domestic Patent References:
| WO2004031813A1 | 2004-04-15 |
Foreign References:
| JP2000029006A | 2000-01-28 | |||
| JP2007140146A | 2007-06-07 | |||
| JPH11258405A | 1999-09-24 | |||
| JP2003029169A | 2003-01-29 | |||
| JP2001159712A | 2001-06-12 |
Attorney, Agent or Firm:
KOBAYASHI KAZUNORI (JP)
Kazunori Kobayashi (JP)
Kazunori Kobayashi (JP)
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