Optical imaging assembly and system with optical distortion correction
AssigneesBaxter International Inc., Baxter Healthcare S.A.
InventorJames F. Munro
Life of this patent
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Abstract
An optical imaging assembly is provided, having an optical axis; an object axis defined by an object being imaged; an aperture stop disposed on the optical axis; a light-transmissive sleeve enclosing the object axis, being disposed in object space defined by the object axis; and at least three refractive lens elements being arranged between the object and the aperture stop without any other intervening optical component, at least one of the elements having surfaces having at least one of cylindrical and acylindrical prescription, with an image plane, wherein the object being imaged lies within the sleeve.
Claims15
An optical imaging assembly, comprising:
- an optical axis;
- an object axis defined by an object being imaged;
- an aperture stop disposed on the optical axis;
- a light-transmissive sleeve enclosing the object axis, being disposed in object space defined by the object axis;
- and
- at least three refractive lens elements being arranged between the object and the aperture stop without any other intervening optical component, one of said elements having surfaces having at least one of cylindrical and acylindrical prescription, with an image plane,
- wherein the object being imaged lies within the sleeve.
An imaging assembly, comprising:
- an optical axis;
- an object axis defined by an object being imaged;
- an aperture stop disposed on the optical axis;
- four lens elements disposed on the optical axis, at least three of said four lens elements being arranged between the object and the aperture stop without any other intervening optical component;
- and
- a light-transmissive sleeve being disposed in object space defined by the object axis,
- wherein the imaging assembly has an optical speed f-number of 1.5 or less, two of said four lens elements have aspherical prescriptions, and the other two of said four lens elements have acylindrical surfaces, and
- wherein said two acylindrical surfaces are separated from one another.
Dependencies are inferred from the claim text.