Wobble correcting monogon scanner for a laser imaging system
First Claim
1. An optical scanner assembly for producing an image on imaging material positioned on an internal surface of a curved film platen, the scanner assembly comprising:
- a light source for producing a light beam representative of the image to be produced on the imaging material, the light beam exiting the light source along a beam axis; and
a reflective system rotatable about a rotation axis substantially coincident with the beam axis, the reflective system including;
a scan optic, the scan optic including;
a first reflective surface for receiving the light beam from the light source and reflecting the light beam; and
a second reflective surface for receiving the light beam reflected from the first reflective surface and reflecting the light beam toward the imaging material on the internal surface of the curved film platen;
a lens device for focusing the light beam onto the imaging material to produce the image thereon; and
a further lens device that is stationary with respect to the rotatable reflective system, the further lens device receiving the light beam focused by the lens device, the further lens device further focusing the light beam onto the imaging material to produce the image thereon.
5 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is an optical scanner assembly for producing an image on imaging material positioned on an internal surface of a curved film platen. The scanner assembly includes a light source for producing a light beam representative of the image to be produced on the imaging material, a reflective system rotatable about a rotation axis, and a toric lens. The reflective system comprises a scan optic defined by a pentaprism and a cylindrical lens. A first reflective surface of the pentaprism receives the light beam from the light source and reflects the light beam to a second reflective surface of the pentaprism. The light beam is further reflected by the second reflective surface towards the imaging material through the cylindrical lens and the toric lens, which act to focus the light beam onto the imaging material to produce the image thereon. The cylindrical and toric lenses in conjunction with the pentaprism correct for wobble along the rotation axis of the reflective system caused by bearing and mechanical inaccuracies in a drive mechanism of the reflective system.
23 Citations
28 Claims
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1. An optical scanner assembly for producing an image on imaging material positioned on an internal surface of a curved film platen, the scanner assembly comprising:
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a light source for producing a light beam representative of the image to be produced on the imaging material, the light beam exiting the light source along a beam axis; and a reflective system rotatable about a rotation axis substantially coincident with the beam axis, the reflective system including; a scan optic, the scan optic including; a first reflective surface for receiving the light beam from the light source and reflecting the light beam; and a second reflective surface for receiving the light beam reflected from the first reflective surface and reflecting the light beam toward the imaging material on the internal surface of the curved film platen; a lens device for focusing the light beam onto the imaging material to produce the image thereon; and a further lens device that is stationary with respect to the rotatable reflective system, the further lens device receiving the light beam focused by the lens device, the further lens device further focusing the light beam onto the imaging material to produce the image thereon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An optical scanner assembly for producing an image on imaging material positioned on an internal surface of a curved film platen, the scanner assembly comprising:
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a light source for producing a light beam representative of the image to be produced on the imaging material, the light beam exiting the light source along a beam axis; a scan optic rotatable about a rotation axis substantially coincident with the beam axis, the scan optic including; first reflective surface for receiving the light beam from the light source and reflecting the light beam; and a second reflective surface for receiving the light beam reflected from the first reflective surface and reflecting the light beam toward the imaging material on the internal surface of the curved film platen; a drive mechanism for rotating the scan optic about the rotation axis; and a system for focusing the light beam onto the imaging material to produce the image thereon, the focusing system including; a first tens device and focusing the light beam on said imaging material; and a second lens device for receiving the light beam focused by the first lens device, the second lens device further focusing the light beam to produce the image on the imaging material on the internal surface of the curved film platen. - View Dependent Claims (23, 24, 25, 26)
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27. A method of producing an image on imaging material positioned on an internal surface of a curved film platen using an optical scanner assembly, the method comprising the steps of:
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directing a light beam representative of the image to be produced on the imaging material along a beam axis; reflecting the light beam using a first reflective surface;
further reflecting the light beam, reflected from the first reflective surface, using a second reflective surface;focusing, in only a first plane, the light beam reflected from the second reflective surface using a first lens device; and further focusing, in only a second plane that is perpendicular to the first plane, the light beam reflected from the second reflective surface using a second lens device, to produce the image on the imaging material on the internal surface of the curved film platen. - View Dependent Claims (28)
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Specification