Laser imaging apparatus
AssigneePENTAX Corporation
InventorShuichi Takeuchi
Life of this patent
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Abstract
A laser imaging apparatus is provided with a laser source, a relaying optical system, a deflector having at least one deflecting surface, an imaging optical system that converges the laser beam to form a beam spot on a surface to be scanned. An optical axis of the relaying optical system and an optical axis of the imaging optical system intersect at a deflection reference point which is located in the vicinity of a deflecting surface on which the laser beam is incident. The laser imaging apparatus further includes first and second adjusting systems that compensates for an inclination error and a positional error of the laser beam incident on the deflecting surface, respectively. The first and second adjusting systems are provided in the relaying optical system.
Claims18
A laser imaging apparatus, comprising:
- a laser source that emits a laser beam;
- a relaying optical system including a plurality of lens elements, said relaying optical systems relaying the laser beam emitted by said laser source;
- a deflector having at least one deflecting surface that deflects the laser beam relayed by said relaying optical system;
- an imaging optical system that converges said laser beam deflected by said at least one deflecting surface to form a beam spot on a surface to be scanned, an optical axis of said relaying optical system and an optical axis of said imaging optical system intersecting at a deflection reference point which is located in the vicinity of said at least one deflecting surface;
- a first adjusting system that compensates for an inclination error of the laser beam incident on said at least one deflecting surface, said first adjusting system being provided in said relaying optical system;
- and
- a second adjusting system that compensates for a positional error of the laser beam incident on said at least one deflecting surface, said second adjusting system being provided in said relaying optical system, wherein said relaying optical system includes a modulator that ON/OFF modulates the laser beam passing therethrough, and wherein said first and second adjusting systems are located on a front side of said modulator.
A laser imaging apparatus, comprising:
- a laser source that emits a laser beam;
- a relaying optical system including a plurality of lens elements, said relaying optical systems relaying the laser beam emitted by said laser source;
- a deflector having at least one deflecting surface that deflects the laser beam relayed by said relaying optical system;
- an imaging optical system that converges said laser beam deflected by said at least one deflecting surface to form a beam spot on a surface to be scanned, an optical axis of said relaying optical system and an optical axis of said imaging optical system intersecting at a deflection reference point which is located in the vicinity of said at least one deflecting surface;
- a first adjusting system that compensates for an inclination error of the laser beam incident on said at least one deflecting surface, said first adjusting system being provided in said relaying optical system;
- and
- a second adjusting system that compensates for a positional error of the laser beam incident on said at least one deflecting surface, said second adjusting system being provided in said relaying optical system, wherein said relaying optical system includes at least one reducing optical system that reduces a diameter of the laser beam.
A laser imaging apparatus, comprising:
- a laser source that emits a laser beam;
- a relaying optical system including a plurality of lens elements, said relaying optical systems relaying the laser beam emitted by said laser source;
- a deflector that deflects the laser beam emitted by said laser source and relayed by said relaying optical system to scan;
- an imaging optical system that converges said laser beam deflected by said deflector to form a scanning beam spot on a surface to be scanned;
- a first adjusting system that compensates for an inclination error of the laser beam incident on said deflector, said first adjusting system being provided in said relaying optical system;
- and
- a second adjusting system that compensates for a positional error of the laser beam incident on said deflector, said second adjusting system being provided in said relaying optical system,
- wherein compensation of said first adjusting system and compensation of said second adjusting system do not affect each other, said relaying optical system including a modulator that ON/OFF modulates the laser beam passing therethrough, said first and second adjusting systems being located on a front side of said modulator.
Dependencies are inferred from the claim text.