A Course in Lens Design by Chris Velzel

By Chris Velzel

A direction in Lens layout is an guide within the layout of image-forming optical platforms. It teaches how a passable layout should be received in an easy means. idea is proscribed to a minimal, and used to help the sensible layout paintings. The booklet introduces geometrical optics, optical tools and aberrations. It provides an outline of the method of lens layout and of the options utilized in this technique. half its content material is dedicated to the layout of 16 varieties of lenses, defined intimately from starting to finish. This ebook isn't the same as such a lot different books on lens layout since it stresses the significance of the preliminary stages of the layout strategy: (paraxial) lay-out and (thin-lens) pre-design. The argument for this alteration of accessory is that during those stages a lot info will be acquired in regards to the homes of the lens to be designed. this data can be utilized in later stages of the layout. This makes A direction in Lens layout an invaluable self-study publication and an appropriate foundation for an introductory direction in lens layout. the maths frequently used is university algebra, in a number of sections calculus is utilized. The ebook can be utilized by scholars of engineering and technical physics and through engineers and scientists.

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13). LCA is defocus. With the stop away from the lens, we have also transverse chromatic aberration (TCA). 48 3 Aberrations Fig. 13 Longitudinal chromatic aberration ds0 Àdn s0 ¼ nÀ1 Fig. 14 Transverse chromatic aberration dM Àdn M ¼ nÀ1 Fig. 15 Longitudinal and transverse chromatic aberration, ‘‘blue rays’’ are denoted by broken lines The chief ray for blue intersects the image plane nearer to the axis (see Fig. 14) TCA is a magnification error. In Fig. 14 we did not draw other rays than the chief ray.

1007/978-94-017-8685-0_2, Ó Springer Science+Business Media Dordrecht 2014 25 26 2 Optical Instruments (Paraxial Approximation) Fig. 1 A simple camera The lens of a film camera (and also a film projection lens) should have a better resolution over a smaller field (8 or 16 mm). With a CCD as target in a camera, the pixel size is related to the required resolution. 010 mm should be sufficient. In our review of camera lenses in Sect. 1 we will see that a resolution of 30 periods per mm is standard for modern camera lenses.

20. In this figure a, b, c, denote the edge images in object space, and a0 , b0 , c0 those in image space. It follows that a0 , b0 , c0 are the paraxial images of a, b, c. We find the limiting ray from P through the system by looking which of the edge images spans up the smallest angle. In the figure this is c. The diaphragm that corresponds to c is called the aperture stop. The ray from P through the edge of edge-image c, and also through the edge of the aperture stop and through the edge of c0 is called marginal ray.

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A Course in Lens Design by Chris Velzel
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