Illumination apparatus optimized for synthetic aperture optics imaging using minimum selective excitation patterns
First Claim
1. A method for performing synthetic aperture optics (SAO) on a target including one or more objects, the method comprising the steps of:
- illuminating the target with a predetermined number (N) of selective excitation patterns, the N selective excitation patterns determined based on a minimum distance (Δ
x) between the objects to be resolved by SAO and a width (w) of a detected area captured by a pixel of an optical imaging system for optical imaging of the illuminated target;
optically imaging the illuminated target at a resolution insufficient to resolve the objects, the illuminated target being imaged by the optical imaging system through a lens included in an imaging path that is physically separated from illumination paths through which the N selective excitation patterns are delivered to the target; and
processing optical images of the illuminated target using information on the selective excitation patterns to obtain a final image of the illuminated target at a resolution sufficient to resolve the objects.
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Abstract
A synthetic aperture optics (SAO) imaging method minimizes the number of selective excitation patterns used to illuminate the imaging target, based on the objects'"'"' physical characteristics corresponding to spatial frequency content from the illuminated target and/or one or more parameters of the optical imaging system used for SAO. With the minimized number of selective excitation patterns, the time required to perform SAO is reduced dramatically, thereby allowing SAO to be used with DNA sequencing applications that require massive parallelization for cost reduction and high throughput. In addition, an SAO apparatus optimized to perform the SAO method is provided. The SAO apparatus includes a plurality of interference pattern generation modules that can be arranged in a half-ring shape.
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Citations
29 Claims
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1. A method for performing synthetic aperture optics (SAO) on a target including one or more objects, the method comprising the steps of:
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illuminating the target with a predetermined number (N) of selective excitation patterns, the N selective excitation patterns determined based on a minimum distance (Δ
x) between the objects to be resolved by SAO and a width (w) of a detected area captured by a pixel of an optical imaging system for optical imaging of the illuminated target;optically imaging the illuminated target at a resolution insufficient to resolve the objects, the illuminated target being imaged by the optical imaging system through a lens included in an imaging path that is physically separated from illumination paths through which the N selective excitation patterns are delivered to the target; and processing optical images of the illuminated target using information on the selective excitation patterns to obtain a final image of the illuminated target at a resolution sufficient to resolve the objects. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for performing synthetic aperture optics (SAO) on a target including one or more objects, the system comprising:
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a plurality of illumination devices configured to illuminate the target with a predetermined number (N) of selective excitation patterns, the N selective excitation patterns determined based on a minimum distance (Δ
x) between the objects to be resolved by SAO and a width (w) of a detected area captured by a pixel of an optical imaging device for optical imaging of the illuminated target;the optical imaging device configured to optically image the illuminated target at a resolution insufficient to resolve the objects, the illuminated target being imaged by the optical imaging device through a lens included in an imaging path that is physically separated from illumination paths through which the N selective excitation patterns are delivered to the target; and a SAO processing device configured to process the optical images of the illuminated target using information on the selective excitation patterns to obtain a final image of the illuminated target at a resolution sufficient to resolve the objects. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus for performing synthetic aperture optics (SAO) on a target including one or more objects, the apparatus comprising:
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a plurality of interference pattern generation devices, each interference pattern generation device configured to generate a pair of light beams that interfere to generate a selective excitation pattern illuminated on the target at a predetermined orientation and a predetermined pitch; a monolithic half-ring shaped structure holding the plurality of interference pattern generation devices arranged in a half-ring shape; an optical imaging device configured to optically image the illuminated target at a resolution insufficient to resolve the objects, the illuminated target being imaged by the optical imaging device through a lens included in an imaging path that is physically separated from illumination paths through which the selective excitation pattern from each of the interference pattern generation devices is delivered to the target, the optical image of the illuminated target being further processed using information on the selective excitation pattern to obtain a final image of the illuminated target at a resolution sufficient to resolve the objects. - View Dependent Claims (21, 22, 23, 24)
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25. An apparatus for performing synthetic aperture optics (SAO) on a target including one or more objects, the apparatus comprising:
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a plurality of interference pattern generation devices, each interference pattern generation device configured to generate a pair of light beams that interfere to generate a selective excitation pattern illuminating the target at a predetermined orientation and a predetermined pitch, the number of interference pattern generation devices being equal to the number (N) of selective excitation patterns used for performing SAO on the target, and the number (N) of selective excitation patterns corresponding to a number of k-space sampling points in a k-space sampling space in a frequency domain, an extent of the k-space sampling space being substantially proportional to an inverse of the minimum distance (Δ
x) between the objects that is to be resolved by SAO and an inverse of a k-space sampling interval between the k-space sampling points being less than a width (w) of a detected area captured by a pixel of an optical imaging device for optical imaging of the illuminated target; anda monolithic half-ring shaped structure holding the plurality of interference pattern generation devices arranged in a half-ring shape; the optical imaging device configured to optically image the illuminated target at a resolution insufficient to resolve the objects, the illuminated target being imaged by the optical imaging device through a lens included in an imaging path that is physically separated from illumination paths through which the selective excitation patterns from the interference pattern generation devices are delivered to the target, the optical image of the illuminated target being further processed using information on the selective excitation patterns to obtain a final image of the illuminated target at a resolution sufficient to resolve the objects. - View Dependent Claims (26, 27, 28, 29)
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Specification