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US 12,584,848 B2Granted
Detection optical system, detection device, flow cytometer, and imaging cytometer
AssigneeSony Group Corporation
InventorsTakeshi Hatakeyama, Shingo Imanishi, Yoshiki Okamoto
Life of this patent
Estimating the term…
Abstract
A detection optical system includes an objective lens, a first relay lens, a second relay lens, and an imaging lens, which are arranged in order from a side of a specimen along an optical path of light from the specimen illuminated by a light source. A primary imaging plane is provided on the optical path between the first relay lens and the second relay lens. An aspherical correction plate that corrects spherical aberration is arranged at a position located between the second relay lens and the imaging lens and substantially conjugate with a pupil position of the objective lens.
Claims14
A detection optical system, comprising:
- a plurality of light sources configured to illuminate a specimen, wherein
- each of the plurality of light sources has a respective excitation spot corresponding to the specimen,
- the plurality of light sources is configured to irradiate the specimen with a plurality of types of beams,
- the plurality of types of beams is associated with a plurality of wavelengths,
- each of the plurality of types of beams is associated with a respective optical axis of a plurality of optical axes, and
- a position of the respective excitation spot of each of the plurality of light sources is different;
- an objective lens;
- a first relay lens;
- a second relay lens;
- an imaging lens;
- a plurality of optical fibers, wherein
- the objective lens, the first relay lens, the second relay lens, and the imaging lens are in this order from a side of the specimen,
- the objective lens, the first relay lens, the second relay lens, and the imaging lens are on an optical path of light from the illuminated specimen,
- a primary imaging plane is on the optical path, and
- the primary imaging plane is between the first relay lens and the second relay lens;
- and
- an aspherical correction plate configured to correct spherical aberration, wherein
- the imaging lens is configured to condense light from the aspherical correction plate to each of the plurality of optical fibers,
- the aspherical correction plate is at a position substantially conjugate with a pupil position of the objective lens,
- a first optical axis of the plurality of optical axes overlaps a second optical axis of the plurality of optical axes at the position of the aspherical correction plate,
- the second optical axis is different from the first optical axis,
- the aspherical correction plate is between the second relay lens and the imaging lens, and
- the aspherical correction plate includes:
- a flat surface in a direction of the optical path of the plurality of optical axes;
- and
- a concave aspherical surface opposite to the flat surface.
23 more elements
A detection optical system, comprising:
- a plurality of light sources configured to illuminate a specimen, wherein
- each of the plurality of light sources has a respective excitation spot corresponding to the specimen,
- the plurality of light sources is configured to irradiate the specimen with a plurality of types of beams,
- the plurality of types of beams is associated with a plurality of wavelengths,
- each of the plurality of types of beams is associated with a respective axis of a plurality of optical axes, and
- a position of the respective excitation spot of each of the plurality of light sources is different;
- an objective lens;
- a relay lens;
- an imaging lens;
- a plurality of optical fibers, wherein
- the objective lens, the relay lens, and the imaging lens are in this order from a side of the specimen,
- the objective lens, the relay lens, and the imaging lens are on an optical path of light from the illuminated specimen,
- a primary imaging plane is on the optical path, and
- the primary imaging plane is between the objective lens and the relay lens;
- and
- an aspherical correction plate configured to correct spherical aberration, wherein
- the imaging lens is configured to condense light from the aspherical correction plate to each of the plurality of optical fibers,
- the aspherical correction plate is at a position substantially conjugate with a pupil position of the objective lens,
- a first optical axis of the plurality of optical axes overlaps a second optical axis of the plurality of optical axes at the position of the aspherical correction plate,
- the second optical axis is different from the first optical axis,
- the aspherical correction plate is between the relay lens and the imaging lens, and
- the aspherical correction plate includes:
- a flat surface in a direction of the optical path of the plurality of optical axes;
- and
- a concave aspherical surface opposite to the flat surface.
22 more elements
Dependencies are inferred from the claim text.