Microscope
AssigneeNikon Corporation
InventorKunio Toshimitsu
Life of this patent
Estimating the term…
Abstract
A specimen of transparent living material is covered over with a cover glass while being observed. An optical image of this specimen captured by an objective lens includes spherical aberration due to the cover glass. The spherical aberration included in the optical image is corrected by a correction optical system. Imaging is performed while varying this spherical aberration correction amount. From the plurality of images which have been imaged, an image is selected whose spherical aberration is the least, according to increase and decrease of contrast. Imaging is performed while driving the correction optical system so as to bring the spherical aberration correction amount to be equal to that when the selected image was imaged.
Claims13
A microscope, comprising:
- an objective lens which focuses upon and observes a specimen mounted upon a stage;
- an imaging device which receives an optical image of the specimen captured by said objective lens and outputs it as an image signal;
- a correction optical system provided between said objective lens and said imaging device, which corrects spherical aberration included in said optical image;
- an optical system drive device which drives said correction optical system to control an amount of spherical aberration correction;
- and
- a control section which drives said correction optical system by said optical system drive device so as to vary the amount of spherical aberration correction, based upon the image signal from said imaging device.
A microscope, comprising:
- an objective lens which focuses upon and observes a specimen mounted upon a stage;
- an imaging device which receives an optical image of the specimen captured by said objective lens and outputs it as an image signal;
- a correction optical system provided between said objective lens and said imaging device, which corrects spherical aberration included in said optical image;
- an optical system drive device which drives said correction optical system to control an amount of spherical aberration correction;
- and
- a control section which performs imaging with the amount of spherical aberration correction when an image was obtained of which spherical aberration was the least among a plurality of images which were imaged by said imaging device while varying said spherical aberration correction amount.
Dependencies are inferred from the claim text.