External laser light introducing device
AssigneeOlympus Corporation
InventorShinichi Hayashi
Life of this patent
Estimating the term…
Abstract
An external laser light introducing device is constructed to introduce laser light from outside of an optical apparatus into inside so that the laser light is condensed on a target by a condenser lens located inside the optical apparatus. In this case, the external laser light introducing device comprises a pupil projection optical system for projecting the entrance pupil of the condenser lens on an external pupil located outside the optical apparatus and an optical axis aligning mechanism for practically aligning the optical axis of the laser light with that of the external pupil.
Claims12
An external laser light introducing device for introducing laser light through a beam expander comprising a movable lens from outside of an optical apparatus into inside the optical apparatus through a galvanomirror located inside the optical apparatus so that the laser light is condensed on a target by a condenser lens located inside the optical apparatus, wherein the external laser light introducing device comprises:
- a pupil projection optical system consisting of a pair of fixed lenses for projecting an external pupil of the beam expander on the galvanomirror;
- and
- an optical axis aligning mechanism for aligning an axis of a beam of the laser light with an optical axis of the external pupil,
- wherein the external pupil is located where the position and/or a diameter of the beam of the laser light is unchanged by the optical axis alignment mechanism.
An external laser light introducing device for introducing a plurality of beams of laser light through a beam expander comprising a movable lens from outside of an optical apparatus into inside the optical apparatus through a galvanomirror located inside the optical apparatus, such that the laser light is condensed on a target by a condenser lens located inside the optical apparatus, wherein the external laser light introducing device comprises;
- a pupil projection optical system consisting of a pair of fixed lenses for projecting an entrance pupil of the condenser lens on an external pupil located outside the optical apparatus;
- a plurality of optical axis aligning mechanisms for aligning axes of the plurality of beams of laser light, respectively, with an optical axis of the external pupil, the external pupil being located where at least one of a position and a diameter of each of the beams of laser light is unchanged by the optical axis alignment mechanisms;
- and
- a plurality of wavefront curvature adjusting mechanisms for adjusting wavefront curvatures of the plurality of beams of laser light at the external pupil, respectively, the external pupil being located where at least one of a position and a diameter of each of the beams of laser light is unchanged by the wavefront curvature adjusting mechanisms.
An external laser light introducing device for introducing laser light through a beam expander comprising a movable lens from outside of an optical apparatus into inside the optical apparatus through a galvanomirror located inside the optical apparatus, such that the laser light is condensed on a target by a condenser lens located inside the optical apparatus, wherein the external laser light introducing device comprises:
- a pupil projection optical system consisting of a pair of fixed lenses for projecting an external pupil of the beam expander on the galvanomirror;
- and
- a wavefront curvature adjusting mechanism for adjusting wavefront curvature of a beam of the laser light at the external pupil, the external pupil being located where at least one of a position and a diameter of the beam of the laser light is unchanged by the wavefront curvature adjusting mechanism.
A method of introducing external laser light through a beam expander comprising a movable lens from outside of an optical apparatus into inside the optical apparatus through a galvanomirror located inside the optical apparatus, such that the laser light is condensed on a target by a condenser lens located inside the optical apparatus, wherein the method comprises:
- projecting an entrance pupil of the condenser lens via a pair of fixed lenses on an external pupil located outside the optical apparatus;
- and
- adjusting a wavefront curvature of a beam of the laser light at the external pupil using wavefront curvature adjusting mechanism, the external pupil being located where at least one of a position and a diameter of the beam of the laser light is unchanged by the wavefront curvature adjusting mechanism.
A laser microscope apparatus comprising:
- a laser light source section emitting laser light;
- a microscope body including an objective lens for magnifying and observing a specimen;
- and
- an external laser light introducing device for introducing the laser light into the microscope body through a beam expander comprising a movable lens;
- wherein the external laser light introducing device includes a pupil projection optical system consisting of a pair of fixed lenses for projecting an entrance pupil of the objective lens on an external pupil of the microscope body and a wavefront curvature adjusting mechanism for adjusting a wavefront curvature of a beam of the laser light at the external pupil, the external pupil being located where at least one of a position and a diameter of the beam of the laser light is unchanged by the wavefront curvature adjusting mechanism.
Dependencies are inferred from the claim text.