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Exit pupil
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In optics, the exit pupil of an optical system is the image of the system's aperture stop created by the optics that follow it in the system. Only rays which pass through the exit pupil can leave the
The image side of the lens of an SLR camera; the exit pupil is the light area in the middle of the lens.
The image side of the lens of an SLR camera; the exit pupil is the light area in the middle of the lens.
The small exit pupil of a 25×30 telescope and large exit pupils of 9×63 binoculars suitable for use in low light
The small exit pupil of a 25×30 telescope and large exit pupils of 9×63 binoculars suitable for use in low light
The exit pupil appears as a white disc on the eyepiece lens of these 8×30 binoculars. Its diameter is 30 ÷ 8 = 3.75 mm.
The exit pupil appears as a white disc on the eyepiece lens of these 8×30 binoculars. Its diameter is 30 ÷ 8 = 3.75 mm.
Magnification
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Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a size ratio called optical magnification. When this number is less than
The postage stamp appears larger with the use of a magnifying glass.
The postage stamp appears larger with the use of a magnifying glass.