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Entrance pupil

Index Entrance pupil

In an optical system, the entrance pupil is the optical image of the physical aperture stop, as 'seen' through the front of the lens system. [1]

51 relations: Angle of view, Aperture, Astigmatism (optical systems), Camera lens, Camera matrix, Cardinal point (optics), Catadioptric system, Circle of confusion, Coma (optics), Depth of field, Diffraction, Entocentric lens, Etendue, Exit pupil, Eyepiece, F-number, Human eye, Image stitching, Index of optics articles, Index of physics articles (E), Infrared Space Observatory, Iron sights, Lego Exo-Force, Lens speed, Macro photography, Moritz von Rohr, Nikon AF DX Fisheye-Nikkor 10.5mm f/2.8G ED, Numerical aperture, Optical lens design, Panoramic photography, Panoramic tripod head, Perceived visual angle, Pinhole camera model, Pupil, Pupil (disambiguation), Pupil magnification, Radiance, Ray (optics), Scheimpflug principle, Sentinel-5 Precursor, Southern African Large Telescope, Synthetic-aperture radar, Telecentric lens, Telephoto lens, Transiting Exoplanet Survey Satellite, Tripod head, Vignetting, Virtual tour, Visual angle, Wavelength, ..., 3D projection. Expand index (1 more) »

Angle of view

In photography, angle of view (AOV) describes the angular extent of a given scene that is imaged by a camera.

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Aperture

In optics, an aperture is a hole or an opening through which light travels.

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Astigmatism (optical systems)

An optical system with astigmatism is one where rays that propagate in two perpendicular planes have different foci.

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Camera lens

A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.

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Camera matrix

In computer vision a camera matrix or (camera) projection matrix is a 3 \times 4 matrix which describes the mapping of a pinhole camera from 3D points in the world to 2D points in an image.

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Cardinal point (optics)

In Gaussian optics, the cardinal points consist of three pairs of points located on the optical axis of a rotationally symmetric, focal, optical system.

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Catadioptric system

A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics).

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Circle of confusion

In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source.

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Coma (optics)

In optics (especially telescopes), the coma, or comatic aberration, in an optical system refers to aberration inherent to certain optical designs or due to imperfection in the lens or other components that results in off-axis point sources such as stars appearing distorted, appearing to have a tail (coma) like a comet.

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Depth of field

In optics, particularly as it relates to film and photography, the optical phenomenon known as depth of field (DOF), is the distance about the Plane of Focus (POF) where objects appear acceptably sharp in an image.

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Diffraction

--> Diffraction refers to various phenomena that occur when a wave encounters an obstacle or a slit.

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Entocentric lens

An entocentric lens is a compound lens which has its entrance or exit pupil inside the lens.

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Etendue

Etendue or étendue is a property of light in an optical system, which characterizes how "spread out" the light is in area and angle.

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Exit pupil

In optics, the exit pupil is a virtual aperture in an optical system.

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Eyepiece

An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes.

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F-number

The f-number of an optical system (such as a camera lens) is the ratio of the system's focal length to the diameter of the entrance pupil.

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Human eye

The human eye is an organ which reacts to light and pressure.

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Image stitching

Image stitching or photo stitching is the process of combining multiple photographic images with overlapping fields of view to produce a segmented panorama or high-resolution image.

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Index of optics articles

Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it.

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Index of physics articles (E)

The index of physics articles is split into multiple pages due to its size.

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Infrared Space Observatory

The Infrared Space Observatory (ISO) was a space telescope for infrared light designed and operated by the European Space Agency (ESA), in cooperation with ISAS (part of JAXA as of 2003) and NASA.

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Iron sights

Iron sights are a system of shaped alignment markers (usually metal) used as a sighting device to assist in the aiming of a device such as a firearm, crossbow, or telescope, and exclude the use of optics as in reflector (reflex) sights, holographic sights, and telescopic sights.

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Lego Exo-Force

LEGO Exo-Force is a LEGO toy line.

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Lens speed

Lens speed refers to the maximum aperture diameter, or minimum f-number, of a photographic lens.

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Macro photography

Macro photography (or photomacrography or macrography, and sometimes macrophotography), is extreme close-up photography, usually of very small subjects and living organisms like insects, in which the size of the subject in the photograph is greater than life size (though macrophotography technically refers to the art of making very large photographs).

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Moritz von Rohr

Moritz von Rohr (4 April 1868 – 20 June 1940) was an optical scientist at Carl Zeiss in Jena, Germany.

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Nikon AF DX Fisheye-Nikkor 10.5mm f/2.8G ED

The AF DX Fisheye-Nikkor 10.5mm 2.8G ED is a fisheye lens manufactured by Nikon for use on Nikon DX format digital SLR cameras.

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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 lens design

Optical lens design is the process of designing a lens to meet a set of performance requirements and constraints, including cost and manufacturing limitations.

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Panoramic photography

Panoramic photography is a technique of photography, using specialized equipment or software, that captures images with horizontally elongated fields of view.

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Panoramic tripod head

A panoramic tripod head is a piece of photographic equipment, mounted to a tripod, which allows photographers to shoot a sequence of images around the entrance pupil of a lens that can be used to produce a panorama.

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Perceived visual angle

In human visual perception, the visual angle, denoted θ, subtended by a viewed object sometimes looks larger or smaller than its actual value.

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Pinhole camera model

The pinhole camera model describes the mathematical relationship between the coordinates of a point in three-dimensional space and its projection onto the image plane of an ideal pinhole camera, where the camera aperture is described as a point and no lenses are used to focus light.

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Pupil

The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina.

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Pupil (disambiguation)

The pupil is the variable-sized, black opening in the centre of the iris.

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Pupil magnification

The pupil magnification of an optical system is the ratio of the diameter of the exit pupil to the diameter of the entrance pupil.

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Radiance

In radiometry, radiance is the radiant flux emitted, reflected, transmitted or received by a given surface, per unit solid angle per unit projected area.

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Ray (optics)

In optics a ray is an idealized model of light, obtained by choosing a line that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow.

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Scheimpflug principle

The Scheimpflug principle is a geometric rule that describes the orientation of the plane of focus of an optical system (such as a camera) when the lens plane is not parallel to the image plane.

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Sentinel-5 Precursor

Sentinel-5 Precursor (Sentinel-5P) is an Earth observation satellite developed by ESA as part of the Copernicus Programme to close the gap in continuity of observations between Envisat and Sentinel-5.

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Southern African Large Telescope

The Southern African Large Telescope (SALT) is a 10-metre class optical telescope designed mainly for spectroscopy.

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Synthetic-aperture radar

Synthetic-aperture radar (SAR) is a form of radar that is used to create two- or three-dimensional images of objects, such as landscapes.

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Telecentric lens

A telecentric lens is a compound lens that has its entrance or exit pupil at infinity; in the prior case, this produces an orthographic view of the subject.

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Telephoto lens

In photography and cinematography, a telephoto lens is a specific type of a long-focus lens in which the physical length of the lens is shorter than the focal length.

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Transiting Exoplanet Survey Satellite

The Transiting Exoplanet Survey Satellite (TESS) is a space telescope for NASA's Explorers program, designed to search for exoplanets using the transit method in an area 400 times larger than that covered by the Kepler mission.

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Tripod head

A tripod head is the part of a tripod system that attaches the supported device (such as a camera) to the tripod legs, and allows the orientation of the device to be manipulated or locked down.

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Vignetting

In photography and optics, vignetting (vignette) is a reduction of an image's brightness or saturation toward the periphery compared to the image center.

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Virtual tour

A virtual tour is a simulation of an existing location, usually composed of a sequence of videos or still images.

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Visual angle

The visual angle is the angle a viewed object subtends at the eye, usually stated in degrees of arc.

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Wavelength

In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.

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3D projection

3D projection is any method of mapping three-dimensional points to a two-dimensional plane.

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Redirects here:

Entrance Pupil, Entrance port, No parallax point, No-parallax point, Pupil (optics).

References

[1] https://en.wikipedia.org/wiki/Entrance_pupil

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