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The exit pupil is the image of the aperture stop formed by the optics behind it, and the location and size of the pupil are determined by chief rays and marginal rays. The marginal ray (sometimes known as an a ray or a marginal axial ray) in an optical system is the meridional ray that starts from an on-axis object point (the point where an ...
Simple ray diagram showing typical chief and marginal rays. In most areas of optics, and especially in microscopy, the numerical aperture of an optical system such as an objective lens is defined by
For example, (,) might represent a paraxial ray (i.e., a ray nearly parallel with the optic axis), and (,) might represent a marginal ray (i.e., a ray with the largest angle admitted by the system aperture). An optical imaging system for which this is true in for all rays is said to obey the Abbe sine condition.
Chief rays and marginal rays determine the location and the size of the entrance pupil, respectively. A camera lens adjusted for large and small aperture. The visible opening is the entrance pupil of the lens. The apparent location of the anatomical pupil of a human eye (black circle) is the eye's entrance pupil location. The outside world ...
The exit pupil is the image of the aperture stop formed by the optics behind it, and the location and size of the pupil are determined by chief rays and marginal rays. The image side of the lens of an SLR camera; the exit pupil is the light area in the middle of the lens. In optics, the exit pupil is a virtual aperture in an
The federal lawsuit sparked by San Jose State possibly having a transgender woman on its volleyball team ought to terrify everyone. Not for any of the trumped-up “reasons” cited by the ...
DOGE is set to examine multibillion-dollar federal loans to two Tesla rivals. Vivek Ramaswamy said the cost-cutting body would "carefully scrutinize" loans to Stellantis and Rivian.
In optics the Lagrange invariant is a measure of the light propagating through an optical system. It is defined by = ¯ ¯, where y and u are the marginal ray height and angle respectively, and ȳ and ū are the chief ray height and angle. n is the ambient refractive index.