Transportation equipment window antireflection film, glass with antireflection film, laminated glass and production method therefor

• US 6,572,990 B1
• Filed: 07/31/2000
• Issued: 06/03/2003
• Est. Priority Date: 11/30/1998
• Status: Expired due to Fees

• Current Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Original Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Inventors: Kimura, Yukio, Katayama, Yoshihito, Oyama, Takuji, Noda, Kazuyoshi
• Primary Examiner(s): Jones, Deborah
• Assistant Examiner(s): MCNEIL, JENNIFER C
• Application Number:
  US09/600,152
• Time in Patent Office: 1,037 Days
• Field of Search: 428/216, 428/428, 428/432, 428/433, 428/469, 428/472, 428/702, 428/698, 359/359, 359/360, 359/580, 359/585, 359/586, 204/192.1, 156/99, 156/106
• US Class Current: 428/698
• CPC Class Codes: B32B 17/10174 Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
• CPC Class Codes: C03C 17/3435 comprising a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 2217/734 comprising an alternation of high and low refractive indexes
• CPC Class Codes: G02B 1/11 Anti-reflection coatings
• CPC Class Codes: Y10T 428/24975 No layer or component greater than 5 mils thick

Abstract

An antireflection film for a window of a transport, which comprises a light absorbing film consisting essentially of a nitride and having a film thickness of from 3 to 12 nm, and an oxide film having a refractive index of from 1.45 to 1.70 and a film thickness of from 70 to 140 nm, formed in this order on a substrate, and which has adequately low reflection performance to the oblique incident light, an adequate abrasion resistance and a high transmittance of visible light, a glass provided with said film, a laminated glass and its production process.

Claims

1. A window of a transport, which comprises a substrate, and a light absorbing film consisting essentially of a nitride and an oxide film having a refractive index of from 1.45 to 1.70 formed on the substrate in this order on the substrate, wherein the geometrical film thickness of the light absorbing film is from 3 to 12 nm, and the geometrical film thickness of the oxide film is from 70 to 140 nm.

2. The window of a transport according to claim 1, wherein a transparent nitride film having a geometrical film thickness of from 1 to 20 nm is formed between the light absorbing film and the oxide film.

3. The window of a transport according to claim 2, wherein the reflectance of visible light incident at an angle of from 40°

to 70°

from the film face side is at most 6% on the film face.

4. The window of a transport according to claim 2, wherein the substrate is a glass substrate.

5. The window of a transport of claim 4, wherein the transport is an automobile.

6. The laminated glass for a window of a transport, which comprises the glass substrate provided with an antireflection film for a window of a transport of claim 4, heat-treated to have a predetermined three-dimensional curve shape, and having a second glass substrate bonded to said glass substrate by means of an intermediate film so that the antireflection film faces the interior of such transport.

7. The laminated glass provided with an antireflection film for a window of a transport according to claim 4, wherein the reflectance of visible light incident at an angle of 60°

from the film face side is at most 11%.

8. A process for producing a laminated glass provided with an antireflection film for a window of a transport, which comprises heat-treating the glass substrate having an antireflection film for a window of a transport of claim 4 to form a predetermined three-dimensional curved shape, and then bonding said heat-treated glass substrate having an antireflection film to another glass substrate by means of an intermediate film so that the antireflection film faces the interior of said transport.

9. The window of a transport of claim 4, wherien the glass substrate is a heat absorbing glass.

10. The window of a transport of claim 9, wherein the transport is an automobile.

11. The laminated glass for a window of a transport, which comprises the glass substrate provided with an antireflection film for a window of a transport of claim 9, heat-treated to have a predetermined three-dimensional curve shape, and having a second glass substrate bonded to said glass substrate by means of an intermediate film so that the antireflection film faces the interior of such transport.

12. The laminated glass provided with an antireflection film for a window of a transport according to claim 9, wherein the reflectance of visible light incident at an angle of 60°

from the film face side is at most 11%.

13. A process for producing a laminated glass provided with an antireflection film for a window of a transport, which comprises heat-treating the glass substrate having an antireflection film for a window of a transport of claim 9 to form a predetermined three-dimensional curved shape, and then bonding said heat-treated glass substrate having an antireflection film to another glass substrate by means of an intermediate film so that the antireflection film faces the interior of said transport.

14. The window of a transport according to claim 1, wherein the reflectance of visible light incident at an angle of from 40°

to 70°

from the film face side is at most 6% on the film face.

15. The window of a transport of claim 14, wherein the substrate is a glass substrate.

16. The window of a transport of claim 15, wherein the transport is an automobile.

17. The laminated glass for a window of a transport, which comprises the glass substrate provided with an antireflection film for a window of a transport of claim 15, heat-treated to have a predetermined three-dimensional curve shape, and having a second glass substrate bonded to said glass substrate by means of an intermediate film so that the antireflection film faces the interior of such transport.

18. The laminated glass provided with an antireflection film for a window of a transport according to claim 15, wherein the reflectance of visible light incident at an angle of 60°

from the film face side is at most 11%.

19. A process for producing a laminated glass provided with an antireflection film for a window of a transport, which comprises heat-treating the glass substrate having an antireflection film for a window of a transport of claim 15 to form a predetermined three-dimensional curved shape, and then bonding said heat-treated glass substrate having an antireflection film to another glass substrate by means of an intermediate film so that the antireflection film faces the interior of said transport.

20. The window of a transport of claim 15, wherien the glass substrate is a heat absorbing glass.

21. The window of a transport of claim 20, wherein the transport is an automobile.

22. The laminated glass for a window of a transport, which comprises the glass substrate provided with an antireflection film for a window of a transport of claim 20, heat-treated to have a predetermined three-dimensional curve shape, and having a second glass substrate bonded to said glass substrate by means of an intermediate film so that the antireflection film faces the interior of such transport.

23. The laminated glass provided with an antireflection film for a window of a transport according to claim 20, wherein the reflectance of visible light incident at an angle of 60°

from the film face side is at most 11%.

24. A process for producing a laminated glass provided with an antireflection film for a window of a transport, which comprises heat-treating the glass substrate having an antireflection film for a window of a transport of claim 20 to form a predetermined three-dimensional curved shape, and then bonding said heat-treated glass substrate having an antireflection film to another glass substrate by means of an intermediate film so that the antireflection film faces the interior of said transport.

25. The window of a transport of claim 1, wherein the substrate is a glass substrate.

26. The window of a transport of claim 25, wherein the glass substrate is a heat absorbing glass.

27. The window of a transport of claim 26, wherein the transport is an automobile.

28. The laminated glass for a window of a transport, which comprises the glass substrate provided with an antireflection film for a window of a transport of claim 26, heat-treated to have a predetermined three-dimensional curve shape, and having a second glass substrate bonded to said glass substrate by means of an intermediate film so that the antireflection film faces the interior of such transport.

29. A process for producing a laminated glass provided with an antireflection film for a window of a transport, which comprises heat-treating the glass substrate having an antireflection film for a window of a transport of claim 26 to form a predetermined three-dimensional curved shape, and then bonding said heat-treated glass substrate having an antireflection film to another glass substrate by means of an intermediate film so that the antireflection film faces the interior of said transport.

30. The window of a transport of claim 25, wherein the transport is an automobile.

31. The laminated glass provided with an antireflection film for a window of a transport according to claim 30, wherein the reflectance of visible light incident at an angle of 60°

from the film face side is at most 11%.

32. A laminated glass for a window of a transport, which comprises the glass substrate provided with an antireflection film for a window of a transport of claim 25, heat treated to have a predetermined three-dimensional curve shape, and having a second glass substrate bonded to said glass substrate by means of an intermediate film so that the antireflection film faces the interior of said transport.

33. A process for producing a laminated glass provided with an antireflection film for a window of a transport, which comprises heat treating the glass substrate having an antireflection film for a window of a transport of claim 25 to form a predetermined three-dimensional curved shape, and then bonding said heat treated glass substrate having an antireflection film to another glass substrate by means of an intermediate film so that the antireflection film faces the interior of said transport.

42. The antireflection film on a window of a transport of claim 30, wherein the transport is an automobile.

34. An antireflection film on a window of a transport, which comprises a light absorbing film consisting essentially of a nitride, a transparent film having a refractive index of from 1.90 to 2.40, and an oxide film having a refractive index of from 1.45 to 1.70, formed on a substrate in this order on the substrate, wherein the geometrical film thickness of the light absorbing film is from 3 to 12 nm, the geometrical film thickness of the transparent film having a refractive index of from 1.90 to 2.40 is from 40 to 80 nm, and the geometrical film thickness of the oxide film is from 70 to 140 nm.

35. An antireflection film on a window of a transport according to claim 34, wherein the reflectance of visible light at an angle of from 40°

to 70°

from the film face side is at most 6% on the film face.

36. The antireflection film on a window of a transport according to claim 34, wherein the substrate is a glass substrate.

37. The antireflection film on a window of a transport of claim 36, wherein the glass substrate is a heat absorbing glass.

38. The antireflection film on a window of a transport of claim 37, wherein the transport is an automobile.

39. The laminated glass for a window of a transport, which comprises the glass substrate provided with an antireflection film on a window of a transport of claim 37, heat-treated to have a predetermined three-dimensional curve shape, and having a second glass substrate bonded to said glass substrate by means of an intermediate film so that the antireflection film faces the interior of such transport.

40. The laminated glass provided with an antireflection film on a window of a transport according to claim 37, wherein the reflectance of visible light incident at an angle of 60°

from the film face side is at most 11%.

41. A process for producing a laminated glass provided with an antireflection film for a window of a transport, which comprises heat-treating the glass substrate having an antireflection film on a window of a transport of claim 37 to form a predetermined three-dimensional curved shape, and then bonding said heat-treated glass substrate having an antireflection film to another glass substrate by means of an intermediate film so that the antireflection film faces the interior of said transport.

43. The laminated glass for a window of a transport, which comprises the glass substrate provided with an antireflection film on a window of a transport of claim 36, heat-treated to have a predetermined three-dimensional curve shape, and having a second glass substrate bonded to said glass substrate by means of an intermediate film so that the antireflection film faces the interior of such transport.

44. The laminated glass provided with an antireflection film on a window of a transport according to claim 36, wherein the reflectance of visible light incident at an angle of 60°

from the film face side is at most 11%.

45. A process for producing a laminated glass provided with an antireflection film on a window of a transport, which comprises heat-treating the glass substrate having an antireflection film for a window of a transport of claim 36 to form a predetermined three-dimensional curved shape, and then bonding said heat-treated glass substrate having an antireflection film to another glass substrate by means of an intermediate film so that the antireflection film faces the interior of said transport.