Optical substrate and method of making
First Claim
1. An optical substrate, comprising:
- a surface characterized by a correlation function value of less than about 37 percent of an initial value within a correlation length of about 1 cm or less, wherein the surface is defined by a first surface structure function modulated by a second surface structure function, the surface of the optical substrate producing specular and diffuse light from a first input beam of light.
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Accused Products
Abstract
An optical surface substrate. The optical substrate features a three-dimensional surface. The optical substrate is defined by a first surface structure function modulated by a second surface structure function, the first surface structure function producing at least one specular component from a first input beam of light. The second surface structure function has a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate produces specular and diffuse light from the first input beam of light. The optical substrate is suitable for use in a variety of applications, including brightness enhancement and projection devices.
99 Citations
70 Claims
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1. An optical substrate, comprising:
a surface characterized by a correlation function value of less than about 37 percent of an initial value within a correlation length of about 1 cm or less, wherein the surface is defined by a first surface structure function modulated by a second surface structure function, the surface of the optical substrate producing specular and diffuse light from a first input beam of light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 31, 32, 33, 34, 35, 36, 37, 42)
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10. A brightness enhancement film, comprising:
a surface characterized by a correlation length of about 1 cm or less, the surface having a shape to turn and diffuse incident light to produce at least a 30 percent brightness increase on-axis to a viewer, wherein the surface produces diffused components of light with a power half angle between about 0.1 and 60 degrees. - View Dependent Claims (11, 12, 13, 43)
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14. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light; the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function; wherein the three-dimensional surface has a correlation function value of less than about 37 percent of an initial correlation function value in a correlation length of about 1 cm or less. - View Dependent Claims (15, 16, 17, 18, 19, 20, 44, 49)
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21. An optical substrate, comprising:
a surface characterized by a correlation function value of less than about 37 percent of an initial value within a correlation length of about 1 cm or less, wherein the surface is defined by a first surface structure function having a sawtooth or triangular cross section extending a length from a first end to a second end of the substrate modulated by a second function, the surface of the optical substrate producing specular and diffuse light from a first input beam of light. - View Dependent Claims (45)
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22. A brightness enhancement film, comprising:
a surface characterized by a correlation length of about 1 cm or less, the surface having a shape to turn and diffuse incident light to produce a 50 percent to 200 percent brightness increase on-axis to a viewer, wherein the surface produces diffused components of light with a power half angle between about 0.1 and 60 degrees. - View Dependent Claims (46)
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23. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a length, width and peak angle with optical characteristics to produce at least one output specular component from an input beam of light; the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function in one or more of frequency, phase and peak angle along the length of the first surface structure function; wherein the three-dimensional surface has a correlation function value of less than about 37 percent of an initial correlation function value in a correlation length of about 1 cm or less. - View Dependent Claims (47)
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24. A backlight display device comprising:
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an optical source for generating light; a light guide for guiding the light therealong including a reflective surface for reflecting the light out of the light guide; at least one optical substrate receptive of the light from the reflective surface, the optical substrate comprising; a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a length, width and peak angle with optical characteristics to produce at least one output specular component from an input beam of light; the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function in one or more of frequency, phase and peak angle along the length of the first surface structure function, the phase being a horizontal peak position along the width; wherein the three-dimensional surface has a correlation function value of less than about 37 percent of an initial correlation function value in a correlation length of about 1 cm or less. - View Dependent Claims (25, 26, 27)
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28. A backlight display device comprising:
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an optical source for generating light; a light guide for guiding the light therealong including a reflective surface for reflecting the light out of the light guide; and an optical substrate receptive of the light from the reflective surface, the optical substrate comprising; a first three-dimensional surface defined by first and second surface structure functions;
the first surface structure function having a length, width and peak angle with optical characteristics to produce at least one output specular component from an input beam of light;the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function in one or more of frequency, phase and peak angle along the length of the first surface structure function, the phase being a horizontal peak position along the width of the first surface structure function; a second three-dimensional surface opposing the first three-dimensional surface and defined by a third surface structure function and a fourth surface structure function;
the third surface structure function having a length, width and peak angle with optical characteristics to produce at least one output specular component from an input beam of light;the fourth surface structure function having a geometry with at least pseudo-random characteristics to modulate the third surface structure function in one or more of frequency, phase and peak angle along the length of the first surface structure function, the phase being a horizontal peak position along the width of the third surface structure function; wherein the first and second three-dimensional surfaces have a correlation function value of less than about 37 percent of an initial correlation function value in a correlation length of about 1 cm or less. - View Dependent Claims (29, 30, 38, 39, 40, 41, 48)
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50. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the second surface structure function modulates the first surface structure function in two orthogonal directions.
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51. A light display comprising:
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a light flux paralizer providing light; an exit light direction modifier having a light exit surface opposite to the light flux paralizer, and a light incident surface towards the light flux paralizer to receive light from the light flux paralizer, the light incident surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from the received light, the first surface structure function defining a plurality of prism surfaces, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the light incident surface producing specular and diffuse light from the received light.
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52. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light; the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined as a surface of a plurality of first prisms having a first prism configuration and a plurality of second prisms having a second configuration different from the first prism configuration.
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53. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light; the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined as a surface having a first region having multiple peaks with a first average peak height, and a second region having multiple peaks with a second average peak height different from the first average peak height.
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54. A brightness enhancement film, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light; the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the brightness enhancement film producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined as a surface with pairs of side by side prisms, each pair having first and second prisms, and each prism having a prism angle and a valley angle wherein either said prism angle or said valley angle of each pair, but not both, are equal.
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55. An optical substrate, comprising:
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an anti-wet-out surface; and a three-dimensional surface opposite the anti-wet-out surface, the three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, and wherein the first surface structure function is defined as a surface with multiple prisms.
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56. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light; the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, the first surface structure function defining a plurality of prisms each having a slope wherein the second surface structure function modulates the slope.
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57. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, the first surface structure function defined as a surface of a lenslet array.
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58. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light; the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined as a surface of a plurality of first prisms, each of the first prisms having a first prism angular orientation, and a plurality of second prisms, each of the second prisms having a second prism angular orientation different from the first prism angular orientation.
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59. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined as surface of a plurality of prism structures extending generally in a first direction, having a spacing in a second direction perpendicular to the first direction between adjacent prismatic structures, and having a height varying in the first direction.
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60. A display device comprising:
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a backlight for providing light; and an optical film receptive of the light from the backlight, the optical film comprising; a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from the light received from the backlight, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the light received from the backlight, wherein the optical film includes beads therein to produce diffuse light from the light received from the backlight.
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61. An optical substrate, comprising:
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an optical film having a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light; and a metal layer on the optical film.
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62. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined by the surface of a non-ordered arrangement of prisms.
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63. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined by the surface of a plurality of refraction prisms and a plurality reflection prisms.
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64. An optical substrate, comprising:
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an optical film comprising; a first surface having a plurality of randomly oriented bumps, and a second three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined by the surface of a lens array.
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65. A light guide plate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the light guide plate producing specular and diffuse light from the input beam of light; and a surface opposite the three-dimensional surface having a plurality of circular or polygonal dots.
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66. A light guide plate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the light guide plate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined by a surface of a plurality of prisms, the prisms have a curved surface in two orthogonal directions.
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67. An optical substrate, comprising:
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a three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined by a surface of a plurality of prisms, each prisms having a facet with a curved cross section.
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68. A backlight display device comprising:
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an optical source for generating light; a light guide for guiding the light therealong including an exit surface for light exiting out of the light guide; a turning film having a three dimensional surface receptive of the light from the exit surface, the exit surface facing toward the tuning film, the three-dimensional surface defined by a first surface structure function and a second surface structure function, the first surface structure function having a geometry with optical characteristics to produce at least one output specular component from an input beam of light, the second surface structure function having a geometry with at least pseudo-random characteristics to modulate the first surface structure function such that the surface of the optical substrate producing specular and diffuse light from the input beam of light, wherein the first surface structure function is defined by a surface of a plurality of prisms. - View Dependent Claims (69, 70)
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Specification