Optical resolution and Point spread function

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Difference between Optical resolution and Point spread function

Optical resolution vs. Point spread function

Optical resolution describes the ability of an imaging system to resolve detail, in the object that is being imaged. The point spread function (PSF) describes the response of a focused optical imaging system to a point source or point object.

Adaptive optics

Adaptive optics (AO) is a technique of precisely deforming a mirror in order to compensate for light distortion.

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Airy disk

In optics, the Airy disk (or Airy disc) and Airy pattern are descriptions of the best-focused spot of light that a perfect lens with a circular aperture can make, limited by the diffraction of light.

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Astronomical seeing

In astronomy, seeing is the degradation of the image of an astronomical object due to turbulence in the atmosphere of Earth that may become visible as blurring, twinkling or variable distortion.

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Charge-coupled device

A charge-coupled device (CCD) is an integrated circuit containing an array of linked, or coupled, capacitors.

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Confocal microscopy

Confocal microscopy, most frequently confocal laser scanning microscopy (CLSM) or laser scanning confocal microscopy (LSCM), is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of using a spatial pinhole to block out-of-focus light in image formation.

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Convolution

In mathematics (in particular, functional analysis), convolution is a mathematical operation on two functions (f and g) that produces a third function (f*g).

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Diffraction-limited system

In optics, any optical instrument or systema microscope, telescope, or camerahas a principal limit to its resolution due to the physics of diffraction.

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Fourier transform

In physics, engineering and mathematics, the Fourier transform (FT) is an integral transform that takes a function as input and outputs another function that describes the extent to which various frequencies are present in the original function.

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Imaging

Imaging is the representation or reproduction of an object's form; especially a visual representation (i.e., the formation of an image).

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Lens

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.

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Numerical aperture

In optics, the numerical aperture (NA) of an optical system is a dimensionless number that characterizes the range of angles over which the system can accept or emit light.

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Optical transfer function

The optical transfer function (OTF) of an optical system such as a camera, microscope, human eye, or projector specifies how different spatial frequencies are captured or transmitted.

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Point source

A point source is a single identifiable localised source of something.

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