Global Information Lookup Global Information

Pupil magnification information


The pupil magnification of an optical system is the ratio of the diameter of the exit pupil to the diameter of the entrance pupil. The pupil magnification is used in calculations of the effective f-number, which affects a number of important elements related to optics, such as exposure, diffraction, and depth of field. For all symmetric lenses, and for many conventional photographic lenses, the pupils appear the same size and so the pupil magnification is approximately 1.

and 25 Related for: Pupil magnification information

Request time (Page generated in 0.8269 seconds.)

Pupil magnification

Last Update:

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

Word Count : 86

Magnification

Last Update:

optical magnification. When this number is less than one, it refers to a reduction in size, sometimes called de-magnification. Typically, magnification is...

Word Count : 1988

Exit pupil

Last Update:

[citation needed] Transmittance Diaphragm (optics) Pupil magnification Hecht (1987), p. 152. "Aging Eyes and Pupil Size". Archived from the original on 2013-10-23...

Word Count : 1161

Numerical aperture

Last Update:

working f-number, m is the lens's magnification for an object a particular distance away, P is the pupil magnification, and the NA is defined in terms of...

Word Count : 2358

Entrance pupil

Last Update:

therefore different entrance pupils. Exit pupil Transmittance Pupil magnification Hecht, Eugene (2017). "5.3.2 Entrance and Exit Pupils". Optics (5th ed.). Pearson...

Word Count : 722

Optical telescope

Last Update:

the exit pupil. The exit pupil is the cylinder of light exiting the eyepiece and entering the pupil of the eye; hence the lower the magnification, the larger...

Word Count : 8146

Macro photography

Last Update:

1899 by W. H. Walmsley for close-up images with less than 10 diameters magnification, to distinguish from true photo-micrographs. Development of the photo-micrograph...

Word Count : 3086

Circle of confusion

Last Update:

in which the entrance pupil and exit pupil are both of diameter A. More complex lens designs with a non-unity pupil magnification will need a more complex...

Word Count : 3620

Telescopic sight

Last Update:

the square of the exit pupil as measured in mm; a 36 mm objective lens diameter divided by the 4× magnification gives an exit pupil of 9 mm; (9×9=81) A relatively...

Word Count : 10864

Monocular

Last Update:

proportionally more expensive) Exit pupil Exit pupil is defined as the diameter of the objective lens divided by the magnification and expressed in mm. (e.g. an...

Word Count : 3107

Binoculars

Last Update:

two different binoculars have equal magnification, equal quality, and produce a sufficiently matched exit pupil (see below), the larger objective diameter...

Word Count : 11096

Ophthalmoscopy

Last Update:

approximately 15 times magnification. Indirect ophthalmoscopy one that produces an inverted, or reversed, image of 2 to 5 times magnification. Each type of ophthalmoscopy...

Word Count : 1035

Eyepiece

Last Update:

created by the objective, on the retina of the eye.) The amount of magnification depends on the focal length of the eyepiece. An eyepiece consists of...

Word Count : 6470

Telecentric lens

Last Update:

bi-telecentric (or double-telecentric) lens, both entrance and exit pupil are at infinity. The magnification is constant despite variations of both the distance of...

Word Count : 1261

Eye relief

Last Update:

clipped image. The exit pupil width of say, a binocular, can be calculated as the objective diameter divided by the magnification, and gives the width of...

Word Count : 770

Long range shooting

Last Update:

and objective diameter or inside the same scope at a lower magnification. Smaller exit pupil diameter makes it more difficult to get in the correct position...

Word Count : 2339

C79 optical sight

Last Update:

86 mm Weight = 690 g Magnification = 3.4× Field of View = 8 degrees (14.1 m @ 100m) Entrance Pupil Diameter = 28 mm Exit Pupil Diameter = 8.5 mm Eye...

Word Count : 1341

Aperture

Last Update:

limits light propagated through the system. More specifically, the entrance pupil as the front side image of the aperture and focal length of an optical system...

Word Count : 5176

Limiting magnitude

Last Update:

to exit pupil larger than eye pupil, exit pupil smaller, and sky background effectively black. Bowen's anomalous limit at highest magnification with the...

Word Count : 2601

Ciliary ganglion

Last Update:

tonic contraction of the pupil with accommodation. (3) Segmental iris constriction. When carefully examined under magnification, the iris does not constrict...

Word Count : 1432

PU scope

Last Update:

the PU telescopic sight a 6.5× power. Magnification: 3.5× Objective diameter: 21 mm Field of view: 4° 30′ Exit pupil: 6 mm Eye relief: 72 mm Limiting optical...

Word Count : 361

Camera lens

Last Update:

from inside the camera is the lens's exit pupil. In this simple case, the aperture, entrance pupil, and exit pupil are all in the same place because the only...

Word Count : 3495

SUSAT

Last Update:

60 x 55 mm Weight: 417 grams Magnification: 4× Field of view: 10 degrees (177 mils) Objective diameter: 25,5 mm Exit pupil: 6.375 mm Eye relief: 25 mm...

Word Count : 515

Anisometropia

Last Update:

lenses (without cylinder) is: Magnification = 1 ( 1 − ( t n ) P ) ⋅ 1 ( 1 − h F ) {\displaystyle {\textrm {Magnification}}={\frac {1}{(1-({\frac {t}{n}})P)}}\cdot...

Word Count : 1910

Optical aberration

Last Update:

the magnification of the individual zones is the same, it is not the same for red as for blue; and there is a chromatic difference of magnification. This...

Word Count : 8674

PDF Search Engine © AllGlobal.net