Laser line illuminator for high throughput sequencing
First Claim
Patent Images
1. An imaging system, comprising:
- an objective lens; and
a line generation device, comprising;
a first light source to emit a first light beam at a first wavelength;
a second light source to emit a second light beam at a second wavelength; and
one or more line forming optics to shape a light beam emitted by the first light source into a line and a light beam emitted by the second light source into a line;
wherein the objective lens is to focus the first light beam and the second light beam at a focal point external to a sampling structure; and
wherein a line width of the first light beam is increased to lower overall power density of the first light beam on a surface of the sampling structure such that the power density of the first light beam on the surface of the sampling structure is below a photosaturation threshold of a first dye of a sample.
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Abstract
Imaging systems including an objective lens and a line generation module are described herein. The objective lens may focus a first light beam emitted by the line generation module and a second light beam emitted by the line generation module at a focal point external to a sample so as to adjust line width. Line width may be increased to lower overall power density of a light beam on a surface of the sample such that the power density of the light beam on the surface of the sample is below a photosaturation threshold of a dye on the sample.
16 Citations
20 Claims
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1. An imaging system, comprising:
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an objective lens; and a line generation device, comprising; a first light source to emit a first light beam at a first wavelength; a second light source to emit a second light beam at a second wavelength; and one or more line forming optics to shape a light beam emitted by the first light source into a line and a light beam emitted by the second light source into a line; wherein the objective lens is to focus the first light beam and the second light beam at a focal point external to a sampling structure; and wherein a line width of the first light beam is increased to lower overall power density of the first light beam on a surface of the sampling structure such that the power density of the first light beam on the surface of the sampling structure is below a photosaturation threshold of a first dye of a sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An imaging system, comprising:
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an objective lens; and a line generation device, comprising; a first light source to emit a first light beam at a first wavelength; a second light source to emit a second light beam at a second wavelength; and one or more line forming optics to shape a light beam emitted by the first light source into a line and a light beam emitted by the second light source into a line; wherein the objective lens is to focus the first light beam and the second light beam at a focal point external to a sample of a sampling structure, the sampling structure comprising a cover plate, a substrate, and a liquid passage between the cover plate and substrate, wherein the liquid passage comprises a top interior surface and a bottom interior surface, wherein the sample is located at the top interior surface or at the bottom interior surface of the liquid passage; and wherein the focal point is below the bottom interior surface of the liquid passage to increase a line width of the first light beam and a line width of the second line beam at the top interior surface of the sampling structure. - View Dependent Claims (14, 15)
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16. An imaging system, comprising:
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an objective lens; and a line generation device, comprising; a first light source to emit a first light beam at a first wavelength; a second light source to emit a second light beam at a second wavelength; and one or more line forming optics to shape a light beam emitted by the first light source into a line and a light beam emitted by the second light source into a line; wherein the objective lens is to focus the first light beam and the second light beam at a focal point external to a sample of a sampling structure, the sampling structure comprising a cover plate, a substrate, and a liquid passage between the cover plate and substrate, wherein the liquid passage comprises a top interior surface and a bottom interior surface, wherein the sample is located at the top interior surface or at the bottom interior surface of the liquid passage; and wherein the focal point is above the top interior surface of the liquid passage as to increase a line width of the first light beam and a line width of the second line beam at the top interior surface of the sampling structure. - View Dependent Claims (17, 18)
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19. An imaging system, comprising:
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an objective lens; a line generation device, comprising; a first light source to emit a first light beam at a first wavelength; a second light source to emit a second light beam at a second wavelength; and one or more line forming optics to shape a light beam emitted by the first light source into a line and a light beam emitted by the second light source into a line; and one or more line widening optics to increase the line width of the first light beam and the line width of the second light beam, the one or more line widening optics comprising a Powell lens positioned after a defocus lens in an optical path from the first light source and second light source to the objective lens; and wherein the objective lens is to focus the first light beam and the second light beam at a focal point external to a sample of a sampling structure.
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20. An imaging system, comprising:
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an objective lens; and a line generation device, comprising; a first light source to emit a first light beam at a first wavelength; a second light source to emit a second light beam at a second wavelength; and one or more line forming optics to shape a light beam emitted by the first light source into a line and a light beam emitted by the second light source into a line; wherein the objective lens is to focus the first light beam and the second light beam at a focal point external to a sample of a sampling structure; and wherein a line width of the first light beam is increased to lower overall power density of the first light beam on a surface of the sample such that the power density of the first light beam on the surface of the sample is below a photosaturation threshold of a first dye on the sample, and wherein a line width of the second light beam is increased to lower overall power density of the second light beam on a surface of the sample such that the power density of the second light beam on the surface of the sample is below a photosaturation threshold of a second dye on the sample.
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Specification