High resolution optical scanner
AssigneeEastman Kodak Company
InventorDavid Kessler
Life of this patent
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Abstract
A high resolution optical scanner is disclosed for scanning a light beam onto a receiving medium. The scanner includes a light source for generating a light beam, optical means for anamorphically shaping the beam, and a rotatable polygon for moving the light beam through a predetermined scan angle. In order to obtain high resolution throughout a scan line, a mirror, having power in the tangential plane and in the sagittal plane, is positioned to intercept the beam from the polygon and direct it to the receiving medium.
Claims14
A high resolution optical scanner for scanning a light beam onto a receiving medium, said scanner comprising:
- a light source for generating a light beam;
- optical means for anamorphically shaping said beam;
- deflector means for intercepting the beam from said optical means and for moving the light beam through a predetermined scan angle in a tangential plane, said deflector means intercepting said beam at an axis of symmetry which is generally perpendicular to said tangential plane;
- and
- a mirror having optical power in the tangential plane and in a sagittal plane normal to the tangential plane, said mirror being monocentric with said axis of symmetry, and said mirror being positioned to intercept said light beam from said deflector means and focus the beam on said medium and to optically conjugate said deflector means and said medium in the sagittal plane.
A high resolution optical scanner which comprises:
- a light source for generating a light beam;
- a receiving medium;
- a light deflector for moving the light beam through a predetermined scan angle;
- and
- a mirror having optical power in the tangential and sagittal planes which is positioned to intercept said beam from the light source and to direct the beam to said scanner and to intercept the beam from said scanner and direct the beam to said receiving medium.
An optical scanner for scanning first and second light beams generated by a light source, said scanner comprising:
- deflector means for scanning said first light beam through a first predetermined angle and said second light beam through a second predetermined angle;
- and
- mirror means having optical power in both tangential and sagittal planes which is positioned to intercept the first and second beams from said deflector means and direct the beams respectively to an object to be recorded and to a receiving medium, and scan lines traced by said beams on said object and on said receiving medium being of the same shape.
A high resolution optical scanner for scanning a light beam onto a receiving medium, said scanner comprising a light source for generating a light beam, optical means for anamorphically shaping said beam, deflector means for intercepting said beam from said optical means and for moving the beam through a predetermined scan angle in a tangential plane characterized in that said deflector means intercepts said beam at an axis of symmetry which is generally perpendicular to said tangential plane, a mirror having power in tangential and sagittal planes is positioned to be monocentric with said axis of symmetry and to intercept said beam from said deflector means and direct the beam to said receiving medium, and said deflector means is optically conjugate with the receiving medium in said sagittal plane.
Dependencies are inferred from the claim text.