Systems and methods for fabricating optical microstructures using a cylindrical platform and a rastered radiation beam
First Claim
18-1. A system according to claim 41 wherein the controller is configured to control rotation of the cylindrical platform and axial rastering of the radiation beam continuously for at least about 1 hour.
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Accused Products
Abstract
Optical microstructures, such as microlenses, are fabricated by rotating a cylindrical platform that includes a radiation sensitive layer thereon, about its axis, while simultaneously axially rastering a laser beam across at least a portion of the radiation sensitive layer. The cylindrical platform is also simultaneously translated axially while it is being rotated. The amplitude of the laser beam is continuously varied while rastering. The optical microstructures that are imaged in the radiation sensitive layer can be developed to provide a master for replicating a microlenses.
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Citations
75 Claims
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18-1. A system according to claim 41 wherein the controller is configured to control rotation of the cylindrical platform and axial rastering of the radiation beam continuously for at least about 1 hour.
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31. A method of fabricating optical microstructures comprising:
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rotating a cylindrical platform that includes a radiation sensitive layer thereon about an axis thereof;
whilesimultaneously axially rastering a laser beam across at least a portion of the radiation sensitive layer while continuously varying amplitude of the laser beam; and
whilesimultaneously translating the cylindrical platform and/or laser beam axially relative to one another, to image the optical microstructures in the radiation sensitive layer. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A system for fabricating optical microstructures comprising:
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a cylindrical platform that is configured to hold a radiation sensitive layer thereon;
a radiation beam system that is configured to impinge a radiation beam upon the radiation sensitive layer on the cylindrical platform; and
a controller that is configured to rotate the cylindrical platform about an axis thereof while simultaneously axially rastering the radiation beam across at least a portion of the radiation sensitive layer to image the optical microstructures in the radiation sensitive layer. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 60, 61, 62, 63, 64, 65, 66)
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59. A system according to claim 58 wherein the controller is configured to control rotation of the cylindrical platform and axial rastering of the radiation beam continuously for at least about 1 hour to fabricate at least about one million optical microstructures.
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67. A system for fabricating optical microstructures comprising:
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a cylindrical platform that is configured to hold a radiation sensitive layer thereon;
a laser beam system that is configured to impinge a laser beam upon the radiation sensitive layer on the cylindrical platform; and
a controller that is configured to rotate the cylindrical platform about an axis thereof while simultaneously axially rastering the laser beam across at least a portion of the radiation sensitive layer, while continuously varying amplitude of the laser beam and while simultaneously translating the cylindrical platform and/or laser beam axially relative to one another, to image the optical microstructures in the radiation sensitive layer. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75)
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Specification