Spectacle Glass and Spectacle Lens for Data Reflection

• US 20100171922A1
• Filed: 01/25/2008
• Published: 07/08/2010
• Est. Priority Date: 01/25/2007
• Status: Active Grant

• Current Assignee: Rodenstock GmbH (Bridgepoint Advisers Group Limited)
• Original Assignee: Rodenstock GmbH (Bridgepoint Advisers Group Limited)
• Inventors: Uttenweiler, Dietmar, Sessner, Rainer, Mueller, Werner, Wehner, Edda
• Granted Patent: US 8,177,361 B2
• Time in Patent Office: Days
• US Class Current: 351/158
• CPC Class Codes: G02B 2027/015 involving arrangement aiming to get less bulky devices
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02C 7/061 Spectacle lenses with progressively varying focal power
• CPC Class Codes: G02C 7/086 Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles
• CPC Class Codes: G02C 7/14 Mirrors; Prisms

Abstract

The invention relates particularly to a spectacle lens having a first and a second surface, wherein at least the first surface of the spectacle lens has a major portion zone and at least one prism zone. The major portion zone of the first surface, together with the opposing second surface of the spectacle lens, forms a major portion of the spectacle lens, which is designed for vision in at least a predetermined distance. The prism zone of the first surface, together with the opposing second surface of the spectacle lens, forms a prism portion, which is designed and arranged such that an optical image of a display is formed at a predetermined virtual distance in front of the eyes of the spectacle wearer. The invention further relates to spectacles, which comprise the spectacle lens, and to a method and apparatuses for calculating or optimizing and producing the spectacle lens.

Claims

1. A spectacle lens with a first and a second surface, wherein at least the first surface of the spectacle lens has a major portion zone and at least one prism zone;

the major portion zone of the first surface forms a major portion of the spectacle lens together with the opposite second surface of the spectacle lens, which major portion is designed for vision in at least one predetermined distance; and

the prism zone of the first surface forms a prism portion together with the opposite second surface of the spectacle lens, which prism portion is designed and arranged so as to form an optical image of a display in a predetermined virtual distance in front of the eyes of the spectacle wearer.

2. The spectacle lens according to claim 1, wherein the prism portion is arranged and designed such that, in a predetermined position of wear of the spectacle lens in front of the eyes of a spectacle wearer, at least one light ray coming from the display, after deflection on the side surface of the spectacle lens in the prism portion, is at least once reflected on the eye-side surface of the prism portion by means of total reflection in the direction of the object-side surface of the prism portion, subsequently reflected on the object-side surface in the direction of the eye-side surface, and imaged in the eye of the spectacle wearer through the eye-side surface of the prism portion.

3. The spectacle lens according to claim 1, wherein in the horizontal and/or the vertical direction, the first surface in the prism zone is at least once, preferably twice, continuously differentiably adjoining the first surface in the major portion zone.

4. The spectacle lens according to claim 1, wherein in the horizontal and/or the vertical direction, the first surface in the prism zone is adjoining the first surface in the major portion zone by forming a bend.

5. The spectacle lens according to claim 1, wherein the first surface is a free-form surface in the prism zone and a spherical, rotationally symmetric aspherical, toric, atonic or progressive surface in the major portion zone.

6. The spectacle lens according to claim 5, wherein

the maximum increase of the surface refractive power of the first surface in the horizontal and/or the vertical direction is 2 D/mm, preferably 1.5 D/mm, particularly preferably 1 D/mm;

and/or

the maximum increase of the surface astigmatism of the first surface in the horizontal and/or the vertical direction is 1.4 D/mm, preferably 1.05 D/mm, particularly preferably 0.7 D/mm.

7. The spectacle lens according to claim 5, wherein at the transition between the prism zone and the major portion zone:

the angle between the horizontal component of the surface normal of the first surface in the prism zone and the horizontal component of the surface normal of the first surface in the major portion zone is less than 5°

, preferably less than 2°

, particularly preferably less than 1°

; and

/or

the angle between the vertical component of the surface normal of the first surface in the prism zone and the vertical component of the surface normal of the first surface in the major portion zone is less than 5°

, preferably less than 2°

, particularly preferably less than 1°

.

8. The spectacle lens according to claim 1, wherein the first surface is a spherical surface in the prism zone and a spherical, rotationally symmetric aspherical, tonic, atonic or progressive surface in the major portion zone.

9. The spectacle lens according to claim 8, wherein the first surface is a spherical surface with a first curvature in the prism zone and a spherical surface with a second curvature smaller than the first curvature in the major portion zone.

10. The spectacle lens according to claim 8, wherein at the transition between the major portion zone and the prism zone,

the angle between the horizontal component of the surface normal of the first surface in the prism zone and the horizontal component of the surface normal of the first surface in the major portion zone is less than 45°

, preferably less than 25°

, particularly preferably less than 10°

, and/or

the angle between the vertical component of the surface normal of the first surface in the prism zone and the vertical component of the surface normal of the first surface in the major portion zone is less than 45°

, preferably less than 25°

, particularly preferably less than 10°

.

11. The spectacle lens according to claim 1, wherein the second surface of the spectacle lens is a spherical, rotationally symmetric aspherical, tonic, atonic or progressive surface extending across the major portion and the prism portion.

12. The spectacle lens according to claim 1, wherein the second surface has a major portion zone and a prism zone, and the second surface is a free-form surface in the prism zone and a spherical, rotationally symmetric aspherical, toric, atonic or progressive surface in the major portion zone.

13. The spectacle lens according to claim 1, wherein the second surface has a major portion zone and a prism zone, and the second surface is a spherical surface in the prism zone and a spherical, rotationally symmetric aspherical, toric, atonic or progressive surface in the major portion zone.

14. The spectacle lens according to claim 13, wherein the second surface is a spherical surface with a first curvature in the prism zone and a spherical surface with a second curvature smaller than the first curvature in the major portion zone.

15. The spectacle lens according to claim 12, wherein in the horizontal and/or the vertical direction, the second surface in the prism zone is at least once, preferably twice, continuously differentiably adjoining the second surface in the major portion zone.

16. The spectacle lens according to claim 12, wherein in the horizontal and/or the vertical direction, the second surface in the prism zone is adjoining the second surface of the spectacle lens in the major portion zone by forming a bend.

17. The spectacle lens according to claim 1, wherein the prism portion is arranged in a horizontally and/or vertically displaced manner with respect to the fitting point or the geometric center of the spectacle lens, wherein

the horizontal and/or the vertical distance between the geometric center of the prism portion and the fitting point or the geometric center of the spectacle lens is 5 to 35 mm, preferably 10 to 20 mm, particularly preferably 15 mm.

18. The spectacle lens according to claim 1, wherein the prism portion is arranged and designed such that it lies outside the field of sight for the indirect vision in the zero direction of sight, wherein the prism portion is preferably designed and arranged such that in the case of a sight deviation with respect to the zero direction of sight of 25°

to 45°

, preferably 30°

to 35°

, in the horizontal direction, and/or of up to 40°

, preferably 15°

to 20°

, in the vertical direction the visual axis is parallel to the surface normal of the first or the second surface of the spectacle lens in the prism zone.

19. The spectacle lens according to claim 1, wherein the first and/or the second surface of the prism portion is/are calculated depending on individual parameters of the spectacle wearer.

20. The spectacle lens according to claim 1, wherein a fully reflecting or semi-permeable reflection layer is coated on the eye-side surface in the prism zone.

21. The spectacle lens according to claim 1, wherein the side surface of the spectacle lens in the area of the prism portion is a plane surface.

22. The spectacle lens according to claim 1, wherein the first surface is the eye-side surface of the spectacle lens.

23. The spectacle lens according to claim 1, wherein the first surface is the object-side surface of the spectacle lens.

24. Spectacles for coupling data in and out, having at least one spectacle lens according to claim 1.

25. The spectacles according to claim 24, comprising at least one display arranged and designed such that, in a predetermined position of wear of the spectacle lens in front of the eyes of a spectacle wearer, at least one light ray coming from the display, after deflection on the side surface of the spectacle lens in the prism portion, is at least once reflected on the eye-side surface of the prism portion by means of total reflection in the direction of the object-side surface of the prism portion, subsequently reflected on the object-side surface in the direction of the eye-side surface, and imaged in the eye of the spectacle wearer through the eye-side surface of the prism portion.

26. The spectacles according to claim 25, wherein the display is integrated in a spectacle frame, preferably in a spectacle side or in a bridge portion of the spectacle frame.

27. The spectacles according to one claim 25, wherein the spectacles further comprise:

a power source preferably integrated in the spectacle frame; and

/or

a driving device for driving the display, wherein the driving device is preferably integrated in the spectacle frame.

28. The spectacles according to claim 24, wherein the spectacles are an autarkic system.

29. A display apparatus comprising:

spectacles with at least one spectacle lens according to claim 1;

a display arranged in the spectacle frame of the spectacles.

30. The display apparatus according to claim 29, further comprising

a power source preferably integrated in the spectacle frame;

and/or

a driving device for driving the display, wherein the driving device is preferably integrated in the spectacle frame.

63. A method of using of a spectacle lens according to claim 1, comprising arranging the spectacle lens in a predetermined average or individual position of wear of the spectacle lens in front of the eyes of a spectacle wearer, for coupling data in and/or out.

64. A method of using spectacles according to claim 24, comprising arranging the spectacle in a predetermined average or individual position of wear of the spectacle lens in front of the eyes of the spectacle wearer, for coupling data in and/or out.

31. A method for calculating or optimizing a spectacle lens, comprising a calculating or optimizing step of at least a first surface of the spectacle lens, wherein the calculating or optimizing step comprises

specifying a major portion zone and a prism zone of the first surface, and

calculating or optimizing the first surface such that the first surface in the major portion zone forms a major portion of the spectacle lens together with an opposite second surface of the spectacle lens, which major portion is designed for vision in at least one predetermined distance;

and

the first surface in the prism zone forms a prism portion together with the opposite second surface of the spectacle lens, which prism portion is designed and arranged so as to form an optical image of a display in a predetermined virtual distance in front of the eyes of the spectacle wearer.

32. The method according to claim 31, wherein the calculation or optimization of the first and preferably the second surface of the spectacle lens in the prism zone is performed such that, in a predetermined position of wear of the spectacle lens in front of the eyes of a spectacle wearer, at least one light ray coming from the display, after deflection on the side surface of the spectacle lens in the prism portion, is at least once reflected on the eye-side surface of the prism portion by means of total reflection in the direction of the object-side surface of the prism portion, subsequently reflected on the object-side surface in the direction of the eye-side surface, and imaged in the eye of the spectacle wearer through the eye-side surface of the prism portion.

33. The method according to claim 31, wherein the calculating or optimizing step is performed taking individual data of the spectacle wearer into account.

34. The method according to claim 31, further comprising a step of obtaining target data of the spectacle lens, wherein the target data of the spectacle lens comprises data relating to the to-be-obtained dioptric power or prescription power of the major portion and/or data relating to a required ray deflection of the light rays coming from the display.

35. The method according to claim 31, wherein the calculation or optimization of the first surface is performed such that in the horizontal and/or the vertical direction, the first surface in the prism zone is at least once, preferably twice, continuously differentiably adjoining the first surface in the major portion zone.

36. The method according to claim 31, wherein the calculation or optimization of the first surface is performed such that in the horizontal and/or the vertical direction, the first surface in the prism zone is adjoining the first surface in the major portion zone by forming a bend.

37. The method according to claim 31, wherein the first surface is a free-form surface in the prism zone and a spherical, rotationally symmetric aspherical, tonic, atonic or progressive surface in the major portion zone.

38. The method according to claim 37, wherein the calculation or optimization of the first surface is performed such that the maximum increase in the surface refractive power of the first surface in the horizontal and/or the vertical direction is 2 D/mm, preferably 1.5 D/mm, particularly preferably 1 D/mm;

and/or

the maximum increase in the surface astigmatism of the first surface in the horizontal and/or the vertical direction is 1.4 D/mm, preferably 1.05 D/mm, particularly preferably 0.7 D/mm.

39. The method according to claim 38, wherein the calculation or optimization of the first surface is performed such that the angle between the horizontal component of the surface normal of the first surface in the prism zone and the horizontal component of the surface normal of the first surface in the major portion zone is less than 5°

, preferably less than 2°

, particularly preferably less than 1°

; and

/or

the angle between the vertical component of the surface normal of the first surface in the prism zone and the vertical component of the surface normal of the first surface in the major portion zone is less than 5°

, preferably less than 2°

, particularly preferably less than 1°

.

40. The method according to claim 31, wherein the first surface is a spherical surface in the prism zone and a spherical, rotationally symmetric aspherical, toric, atoric or progressive surface in the major portion zone.

41. The method according to claim 40, wherein the first surface is a spherical surface with a first curvature in the prism zone and a spherical surface with a second curvature smaller than the first curvature in the major portion zone.

42. The method according to claim 40, wherein the calculation or optimization of the first surface is performed such that at the transition between the major portion zone and the prism zone, the angle between the horizontal component of the surface normal of the first surface in the prism zone and the horizontal component of the surface normal of the first surface in the major portion zone is less than 45°

, preferably less than 25°

, particularly preferably less than 10°

, and/or the angle between the vertical component of the surface normal of the first surface in the prism zone and the vertical component of the surface normal of the first surface in the major portion zone is less than 45°

, preferably less than 25°

, particularly preferably less than 10°

.

43. The method according to claim 31, further comprising a step of calculating or optimizing the second surface of the spectacle lens, wherein the optimization is preferably performed taking individual data of the spectacle wearer into account.

44. The method according to claim 31, wherein the second surface is a spherical, rotationally symmetric aspherical, tonic, atoric or progressive surface extending across the major portion and the prism portion.

45. The method according to claim 31, wherein the second surface has a major portion zone and at least one prism zone, and the second surface is a free-form surface in the prism zone and a spherical, rotationally symmetric aspherical, toric, atoric or progressive surface in the major portion zone.

46. The method according to claim 31, wherein the second surface has a major portion zone and at least one prism zone, and the second surface is a spherical surface in the prism zone and a spherical, rotationally symmetric aspherical, toric, atonic or progressive surface in the major portion zone.

47. The method according to claim 46, wherein the second surface is a spherical surface with a first curvature in the prism zone and a spherical surface with a second curvature smaller than the first curvature in the major portion zone.

48. The method according to claim 45, wherein the calculation of the second surface is performed such that in the horizontal and/or the vertical direction, the second surface in the prism zone is at least once, preferably twice, continuously differentiably adjoining the second surface in the major portion zone.

49. The method according to claim 46, wherein the calculation of the second surface in the prism zone is performed such that in the horizontal and/or the vertical direction, the second surface in the prism zone is adjoining the second surface in the major portion zone by forming a bend.

50. The method according to claim 31, wherein the prism portion is arranged in a horizontally and/or vertically displaced manner with respect to the fitting point or the geometric center of the spectacle lens.

51. The method according to claim 31, wherein the calculation or optimization of the spectacle lens is performed such that in a predetermined position of wear of the spectacle lens

the prism portion is outside the field of sight of a spectacle wearer in indirect vision in the zero direction of sight;

and

upon a sight deviation, at a predetermined angle from 25°

to 45°

, preferably 30°

to 35°

, in the horizontal direction, and/or upon a sight deviation at a predetermined angle of up to 40°

, preferably 15°

to 20°

, in the vertical direction,

the visual axis is parallel to the first or the second surface of the spectacle lens in the prism zone.

52. The method according to claim 31, wherein the prism portion is arranged in a horizontally and/or vertically displaced manner with respect to the fitting point or the geometric center of the spectacle lens, wherein

the horizontal and/or the vertical distance between the geometric center of the prism portion and the fitting point or the geometric center of the spectacle lens is 5 to 35 mm, preferably 10 to 20 mm, particularly preferably 15 mm.

53. A method for producing a spectacle lens, comprising the following steps:

providing surface data of the spectacle lens, wherein the spectacle lens is calculated or optimized according to the method according to claim 31;

fabricating the spectacle lens according to the provided surface data of the spectacle lens.

54. The method according to claim 53, comprising a step of coating a preferably semi-permeable reflection layer on the eye-side surface of the spectacle lens in the area of the prism portion.

55. The method according to claim 53, wherein the fabrication of the spectacle lens comprises the following steps;

providing a main body,

providing a prism body

connecting the main body and the prism body;

finishing the main body with the connected prism body, so that the spectacle lens has the determined target data, wherein the target data of the spectacle lens comprises data relating to the to-be-obtained dioptric power or prescription power of the major portion and/or data relating to a required ray deflection of the light rays coming from the display.

56. The method according to claim 55, wherein the connection of the prism body with the main body is achieved by melting or gluing in.

57. The method according to claim 55, wherein the main body is provided with a recess for receiving the prism body.

58. An apparatus for calculating or optimizing a spectacle lens, wherein the apparatus comprises:

calculating and optimizing means for calculating and optimizing at least one surface of the spectacle lens, wherein the calculating and optimizing means are designed and arranged so as to perform the method for calculating or optimizing the spectacle lens according to claim 31.

59. The apparatus according to claim 58, further comprising obtaining means for obtaining target data of the spectacle lens, wherein the target data of the spectacle lens comprises data relating to the to-be-obtained dioptric power or prescription power of the major portion and/or data relating to the required ray deflection of the light rays coming from the display.

60. A machine-readable computer program product having program portions that are adapted, when loaded and executed on a computer, to perform a method for calculating or optimizing a spectacle lens according to claim 31.

61. A storage medium with a computer program stored thereon, wherein the computer program is adapted, when loaded and executed on a computer, to perform a method for optimizing a spectacle lens according to claim 31.

62. An apparatus for producing a spectacle lens, comprising

calculating and optimizing means for calculating or optimizing at least one surface of the spectacle lens, wherein the calculating and optimizing means are designed and arranged so as to perform a method for calculating or optimizing the spectacle lens according to claim 31;

machining means for machining the optimized spectacle lens.