By Chris Velzel
A direction in Lens layout is an guideline within the layout of image-forming optical structures. It teaches how a passable layout should be acquired in a simple means. concept is restricted to a minimal, and used to aid the sensible layout paintings. The publication introduces geometrical optics, optical tools and aberrations. It offers an outline of the method of lens layout and of the suggestions utilized in this procedure. half its content material is dedicated to the layout of 16 kinds of lenses, defined intimately from starting to finish. This ebook isn't like 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 modification of accessory is that during those stages a lot info may be got in regards to the houses of the lens to be designed. this data can be utilized in later levels of the layout. This makes A direction in Lens layout an invaluable self-study ebook and an appropriate foundation for an introductory direction in lens layout. the maths regularly used is university algebra, in a number of sections calculus is utilized. The ebook will be utilized by scholars of engineering and technical physics and by way of engineers and scientists.
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Additional info for A Course in Lens Design
We trace a marginal ray (from the axial object point through the edge of the entrance pupil) and a chief ray (from the edge of the object field through the center of the entrance pupil) through the system, using the paraxial ray tracing equations of Sect. 4. See also Fig. 16. At each surface we obtain ni ui , hi for the marginal ray, and ni ui ; hi for the chief ray. At each surface we calculate ﬃ h h i i Ai ¼ ni ui þ ri ; Ai ¼ ni ui þ ri ; À Á À Á u0 Di un ¼ ni0 À unii ; Di n1 ¼ n10 À n1i : i i Note that Ai ¼ ni ii ¼ n0i i0i ; Ai ¼ ni ii ¼ n0i i0i , where i, i0 are incident and refractive angle of the marginal ray, and ii ; i0i for the chief ray.
14-3 of Longhurst . Usually n = 1, Mob ) 1, so that n0 sin u0 is small and n0 sin u0 ¼ U ; 2f oc where U is the diameter of the eye pupil, is a good approximation. 32 2 Optical Instruments (Paraxial Approximation) The ocular magnification is Moc ¼ 250 f oc , so that we find for the total magnification M ¼ Mob Moc ¼ 500 n sin u : U ð3Þ Because the smallest pupil diameter is U = 2, the maximum magnification is Mmax ¼ 250 n sin u ð4Þ when the eye pupil is the limiting diameter. When we make the exit pupil of the ocular narrower, we can take a somewhat higher value for M; but beware of diffraction (a Uoc of 1 mm gives a spot of 5 lm on the retina).
R. B. Johnson, Lens Design Fundamentals, 2nd edn. (SPIE Press/Academic Press, 2010) 3. D. O’Shea, Elements of Modern Optical Design. (Wiley, 1985) 4. S. van Heel, Inleiding in de Optica. (M. Nijhoff, 1950) 5. P. Mouroulis, J. Mcdonald, Geometrical Optics and Optical Design (Oxford University Press, Oxford, 1997) Chapter 2 Optical Instruments (Paraxial Approximation) We give only a short description of the most important optical instruments. g. Hecht  or Longhurst . 1 Camera The simplest camera has a lens, shutter, an iris diaphragm and a box in which the back wall contains the film plane.
A Course in Lens Design by Chris Velzel