Imaging system, methodology, and applications employing reciprocal space optical design
View Patent ↗An imaging system, methodology, and various applications are provided to facilitate optical imaging performance. The system includes a sensor having one or more receptors and an image transfer medium to scale the sensor and receptors in accordance with resolvable characteristics of the medium. A computer, memory, and/or display associated with the sensor provides storage and/or display of information relating to output from the receptors to produce and/or process an image, wherein a plurality of illumination sources can also be utilized in conjunction with the image transfer medium. The image transfer medium can be configured as a k-space filter that correlates a pitch associated with the receptors to a diffraction-limited spot associated with the image transfer medium, wherein the pitch can be unit-mapped to about the size of the diffraction-limited spot.
1. A microscopic imaging system, comprising:
a sensor having a plurality of pixels;
a collection lens having a diffraction-limited size dimension adapted to about a size dimension of at least one of the pixels as projected into an object plane;
a component to synchronize power strobing of a light emitting diode with a scan step frequency of a fluorescence system;
a charge pump to generate high current and short duration pulses through the light emitting diode to provide intense periods of brightness yet protect the diode from excess power dissipation; and a fluorescence light source having a beam diameter scaled to about the size dimension of at least one of the pixels projected into the object plane.
2. The system of claim 1 , further comprising a beam scanner to move the beam over the object plane.
3. The system of claim 1 , the fluorescence light source is adapted as an epi-fluorescence source.
4. The system of claim 1 , further comprising a matching lens to adapt a pixel dimension to the diffraction-limited dimension.
5. The system of claim 1 , further comprising a beam expander to control the beam.
6. The system of claim 1 , further comprising at least one mirror to direct energy resulting from the beam to the sensor.
7. The system of claim 1 , further comprising a beam splitter to enable object illumination and to allow energy from the object plane to be passed through to the sensor.
8. The system of claim 2 , the beam scanner directs the beam which is scaled, or projected in the object plane to about the size of a diffraction-limited spot to provide a fluorescent yield enhancement.
9. The system of claim 8 , the beam scanner selectively scans the field of view to selectively illuminate or isolate fluorescent structures of interest.
10. The system of claim 1 , further comprising a control component to modulate the fluorescence light source.
11. The system of claim 10 , the control component modulates a scan frequency associated with a source beam or modulates an intensity of the fluorescence light source.
12. The system of claim 7 , the beam splitter is a dichroic mirror reflective at an excitation wavelength.
13. The system of claim 1 , the fluorescence light source is a light emitting diode.
14. The system of claim 2 , the beam scanner further comprises at least one of an orthogonal mirror configuration driven via servos or galvanometer, an orthogonal optical wedge configuration, and an electro-optic modulator crystal configuration.
15. The system of claim 1 , further comprising a comprising a component to position a beam at varying degrees of offset.
16. The system of claim 15 , a memory component to capture images at different scanning offsets.
17. The system of claim 16 , the images are combined via software to mitigate positional uncertainty for diffraction-limited spots.
18. The system of claim 16 , further comprising a component to capture a first image where projected illumination is substantially aligned with projected pixels.
19. The system of claim 18 , further comprising a component to capture a second image with the projected illumination substantially aligned with spaces between the projected pixels.
20. A method for generating a digital image, comprising:
adapting a sensor having one or more pixels to diffraction-limited characteristics of an optical system, the pixels scaled in size by the optical system to be about the size of the diffraction-limited characteristics of a collection lens associated with the optical system;
synchronizing power strobing of a light emitting diode with a scan step frequency of a fluorescence system;
generating high current and short duration pulses through the light emitting diode to provide intense periods of brightness yet protecting the diode from excess power dissipation;
generating an epi-fluorescence beam of energy in the optical system; and
scanning the beam over an object to generate the digital image.
21. The method of claim 20 , modulating the epi-fluorescence beam via a light emitting diode charge pump.
22. A system for generating a digital image, comprising:
means for scaling sensor pixels to be about a size of a diffraction-limited parameter associated with a collection lens;
means for synchronizing power strobing of a light emitting diode with a scan step frequency of a fluorescence system;
means for generating high current and short duration pulses through the light emitting diode to provide intense periods of brightness yet protecting the diode from excess power dissipation;
means for generating an epi-fluorescence source of energy to excite an object; and
means for pulsing the energy source to generate the digital image.
23. The system of claim 22 , further comprising means for scanning a beam generated from the energy source.