Module optics

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Created on Mar 22, 2013

Author: David S. Bolme Oak Ridge National Laboratory

Functions

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diffractionLimit(distance, wavelength, aperture)
This function computes the Diffraction limit of an optical system.

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apertureComputation(distance, wavelength, resolution)
This function computes the Diffraction limit of an optical system.

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fNumber(focal_length, aperture)

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depthOfField(hyperfocal, distance)

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hyperFocalDistance(focal_length, fnumber, circle_of_confusion, definition=2)
http://en.wikipedia.org/wiki/Hyperfocal_distance

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Variables

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__package__ = None

Function Details

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diffractionLimit(distance, wavelength, aperture)

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This function computes the Diffraction limit of an optical system. It returns the smallest resolvable pattern at a given wavelength and aperture.

Parameters:

distance - distance to the target in meters.
wavelength - the wavelength of the light in nanometers
aperture - the size of the aperture in meters.

Returns:

the resolution limit in meters

apertureComputation(distance, wavelength, resolution)

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This function computes the Diffraction limit of an optical system. It returns the smallest resolvable pattern at a given wavelength and aperture.

Parameters:

distance - distance to the target in meters.
wavelength - the wavelength of the light in nanometers
resolution - the resolution on target in metes.

Returns:

the aperture size in meters.

hyperFocalDistance(focal_length, fnumber, circle_of_confusion, definition=2)

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http://en.wikipedia.org/wiki/Hyperfocal_distance

Definition 1: The hyperfocal distance is the closest distance at which a lens can be focused while keeping objects at infinity acceptably sharp. When the lens is focused at this distance, all objects at distances from half of the hyperfocal distance out to infinity will be acceptably sharp.

Definition 2: The hyperfocal distance is the distance beyond which all objects are acceptably sharp, for a lens focused at infinity.