The pupil function or aperture function describes how a light wave is affected upon transmission through an optical imaging system such as a camera, microscope, or the human eye. More specifically, it is a complex function of the position in the pupil[1] or aperture (often an iris) that indicates the relative change in amplitude and phase of the light wave. Sometimes this function is referred to as the generalized pupil function, in which case pupil function only indicates whether light is transmitted or not.[2] Imperfections in the optics typically have a direct effect on the pupil function, it is therefore an important tool to study optical imaging systems and their performance.[3]
^Kidger, Michael J. (2001). Fundamental Optical Design. SPIE Press, Bellingham, WA. Retrieved 10 November 2013.
^Goodman, Joseph (2005). Introduction to Fourier Optics (3rd ed.). Roberts & Co Publishers. ISBN 0-9747077-2-4.
^Fisher, Robert (2008). Optical System Design (2nd ed.). The McGraw-Hill Companies, Inc. ISBN 9780071472487.
The pupilfunction or aperture function describes how a light wave is affected upon transmission through an optical imaging system such as a camera, microscope...
the size of the pupil. This is the pupillary light reflex, which is an important test of brainstem function. Furthermore, the pupil will dilate if a...
the ideal, diffraction-limited, imaging system with a circular pupil. Its transfer function decreases approximately gradually with spatial frequency until...
visual acuity, pupilfunction, extraocular muscle motility, visual fields, intraocular pressure and ophthalmoscopy through a dilated pupil. A minimal eye...
complex. The optical transfer function T(w) of an optical system is given by the autocorrelation of its pupilfunction f(x,y): T ( w ) = ∫ w / 2 1 ∫ 0...
constriction of the pupil. The opposite condition, mydriasis, is the dilation of the pupil. Anisocoria is the condition of one pupil being more dilated...
varies the size of the pupil, via the optic and oculomotor cranial nerve. A constriction response (miosis), is the narrowing of the pupil, which may be caused...
which are nowadays called nystagmus. It is particularly noticeable when pupilfunction is tested with a light, but is independent of eye movements or changes...
the lens, the MTF is the autocorrelation of the pupilfunction, so it accounts for the finite pupil extent and the lens aberrations. The sensor MTF is...
Variants of these algorithms allow for simultaneous reconstruction of the pupilfunction of an optical system, allowing for the correction of the aberrations...
lesions of the oculomotor nerve, pupillary function is usually spared whereas in compressive lesions the pupil is involved. Pharmacological agents with...
cycloplegic drugs are used as a mydriatic to dilate the pupil, the pupil in the normal eye regains its function when the drugs are metabolized or carried away...
eye called the iris. It encircles the pupil of the iris, appropriate to its function as a constrictor of the pupil. This structure is found in vertebrates...
up of the sclera, the iris, and the pupil, a black hole located at the center of the eye with the main function of allowing light to pass to the retina...
computes the wave amplitude using the Fourier transform of the aberrated pupilfunction evaluated at 0,0 (center of the image plane) where the phase factors...
The iris dilator muscle (pupil dilator muscle, pupillary dilator, radial muscle of iris, radiating fibers), is a smooth muscle of the eye, running radially...
Fabrice; Ho, Arthur (2010). "The entrance pupil of the human eye: a three-dimensional model as a function of viewing angle". Optics Express. 18 (21):...
This modulation corresponds to a change in complex argument of the pupilfunction of such an imaging device, and it can be engineered with different goals...
pupillary function. These include the pupillary light reflex and accommodation reflex. Although the pupillary response, in which the pupil dilates or...
or photopupillary reflex is a reflex that controls the diameter of the pupil, in response to the intensity (luminance) of light that falls on the retinal...
in decreased function of the iris and pupil, affecting the physical eye and visualization. In the early history of China, double pupils were seen as a...
involved in such autonomic control of the body. Such functions may engage the heart, blood vessels, and pupils, among others. The brainstem also holds the reticular...
Vol'pert 1985) he, jointly with his pupil Sergei Ivanovich Hudjaev, explored extensively the properties of BV functions and their application. His chain...
experiments have shown that pupil imbalances in EUV lithography can result in pitch-dependent pattern placement errors. Since the pupil imbalance changes with...
a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, its force of contraction, digestion, respiratory...
outside world. Pupil size may be an indicator of sadness. A sad facial expression with small pupils is judged to be more intensely sad as the pupil size decreases...
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