- Conventional imaging system:
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- 1) low pass filtering process
- 2) discrete sampling of image sensor
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- Coherent imaging system:
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- Phasor amplitudes of the light field vary in unison at all spatial points
- When light waves come from single point source (LEDs often)
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- Incoherent imaging system:
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- Phasor amplitudes at different points all vary in an uncorrelated manner.
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- Optical aberrations impose practical limits on resolution performance
Chapter 2 – Imaging Procedure of FP
- Space bandwidth product (SBP) to characterize the total number of resolvable pixels.
- SBP can be calculated with the total imaging area and the smallest resolvable feature of the image.
- SBP of conventional microscopes on order of 10 megapixels.
- FP tackles improving SBP without physical scaling up lens size
- How does phase retrieval work and why do we need it?