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Download Lens design: a practical guide by Haiyin Sun PDF

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By Haiyin Sun

A functional advisor to Lens Design makes a speciality of the very specific useful means of lens layout. each step from setup standards to finalizing the layout for creation is mentioned in a ordinary, tangible approach. layout examples of a number of commonplace smooth lenses are supplied. Optics fundamentals are brought and easy capabilities of Zemax are defined. Zemax might be used in the course of the publication.

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Skew rays also do not cross the optical axis anywhere and are not parallel to the optical axis. There are infinite numbers of skew rays. Skew rays are rarely used when manual raytracing is performed. 6 Sagittal Plane There are infinite numbers of planes that are perpendicular to the tangential plane. Among these planes, only one plane contains the chief ray. Such a plane is called sagittal plane. 7 Sagittal Ray A sagittal ray propagates in the sagittal plane. It is also called a transverse ray.

18, the size of the Airy disk is much exaggerated for clarity. 19a and b. A real optical system may have various aberrations that will increase the focused spot size. If the aberrations are not severe, the focused spot size will be close to the Airy disk size, and we say this optical system is diffraction-limited. There is no simple line to separate diffraction-limited and not diffraction-limited. Some ambiguous words, such as “near diffraction limited,” are often used to qualitatively describe the quality of an optical system.

The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes with the same normal. The reflected ray and the incident ray are on the opposite sides of the normal. 29 illustrates the reflection law for three mirrors with different surface profiles. The optical axis of a mirror is its axis of symmetry, same as for a lens. 30. Two rays from the top of the object are traced. Usually one ray is parallel to the optical axis of the mirror and another ray hits the cross point of the mirror and the optical axis.

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