Optical component and method for manufacturing the same

• US 20060177638A1
• Filed: 02/07/2006
• Published: 08/10/2006
• Est. Priority Date: 02/08/2005
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Noguchi, Takashi, Shibuya, Munehiro, Kanai, Toshihito
• Application Number:
  US11/348,235
• Publication Number:
  US 20060177638A1
• Time in Patent Office: Days
• US Class Current: 428/212
• CPC Class Codes: C23C 14/0021 Reactive sputtering or evaporation
• CPC Class Codes: G02B 1/115 Multilayers
• CPC Class Codes: G02B 1/14 Protective coatings, e.g. hard coatings
• CPC Class Codes: Y02T 50/60 Efficient propulsion technologies, e.g. for aircraft
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree

Abstract

A method for manufacturing a plastic optical component having an optical multilayer film. The optical multilayer film has a low refractive index layer and a high refractive index layer, and a layer containing titanate of a rare earth element is formed in a vacuum atmosphere at pressure more than 1×10⁻⁴ Pa and less than 1×10⁻² Pa as the high refractive index layer of the optical multilayer film.

Claims

1. A method for manufacturing a plastic optical component having an optical multilayer film, wherein the optical multilayer film has a low refractive index layer and a high refractive index layer, and

wherein a layer containing titanate of a rare earth element is formed in a vacuum atmosphere at pressure more than 1×

10<sup>−

4</sup> Pa and less than 1×

10<sup>−

2</sup> Pa as the high refractive index layer of the optical multilayer film.

2. The method for manufacturing the optical component according to claim 1, wherein the high refractive index layer closest to a base material of the optical component is formed in a vacuum atmosphere at pressure equal to or more than 5×

10<sup>−

3</sup> Pa and the high refractive index layer farthest from the base material of the optical component is formed in a vacuum atmosphere at pressure equal to or less than 5×

10<sup>−

3</sup> Pa.

3. The method for manufacturing the optical component according to claim 1, wherein a layer containing lanthanum titanate is formed as the high refractive index layer.

4. The method for manufacturing the optical component according to claim 3, wherein a layer containing silicon dioxide is formed as the low refractive index layer.

5. An optical component manufactured by the method for manufacturing the optical component according to claim 1.

6. The optical component according to claim 5, wherein the optical component is a spectacle lens.

7. The optical component according to claim 5, comprising:

a lens base material;

a hard coating layer provided on the lens base material; and

an antireflection coating provided on the hard coating layer and having a low refractive index layer containing silicon dioxide and a high refractive index layer containing lanthanum titanate,

wherein the hard coating layer includes at least one of the following (1) and (2);

(1) rutile type titanium dioxide particles; and

(2) particles with nucleuses containing titanium oxide covered by metal oxide with low photoactivation.