Get A Course in Lens Design PDF

By Chris Velzel

ISBN-10: 9401786844

ISBN-13: 9789401786843

ISBN-10: 9401786852

ISBN-13: 9789401786850

A path in Lens layout is an guideline within the layout of image-forming optical platforms. It teaches how a passable layout could be got in a simple manner. concept is proscribed to a minimal, and used to help 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 techniques utilized in this procedure. 1/2 its content material is dedicated to the layout of 16 sorts of lenses, defined intimately from commencing to finish. This e-book 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 variation of accessory is that during those levels a lot info might be received concerning the homes of the lens to be designed. this knowledge can be utilized in later levels of the layout. This makes A direction in Lens layout an invaluable self-study booklet and an appropriate foundation for an introductory direction in lens layout. the maths typically used is collage algebra, in a number of sections calculus is utilized. The booklet should be utilized by scholars of engineering and technical physics and via engineers and scientists.

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Extra resources for A Course in Lens Design

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As an example we show how to find the principal points of a doublet. We use the calculation scheme found also in the books of Kingslake and Johnson [2] and O’Shea [3]. It is easy to transform this into a spread sheet calculation on your computer. 009964 = u40 0 The length units are mm, as everywhere in this book. In this scheme first the radii, indices and distances for the surfaces of the doublet are inserted. The distance d4 is still not known, this is the back focal length. Then K and d/n0 are calculated.

3893. 2 Ray Tracing with Thin Lenses The preceding treatment of paraxial ray-tracing can be applied to thin lenses as well. 4 Paraxial Raytracing 19 Fig. 19 Principal points for a system of two thin lenses in air. Note that H0 F0 = FH a image side, b object side principal plane For a system of thin lenses, the position of focal points and principal planes can be determined with the aid of these formulas. Readymade formulas for a system of two thin lenses are (see Fig. 19 for the notation): K ¼ K1 þ K2 À dK1 K2 V1 H ¼ K2 d K V2 H0 ¼ À K1 d K ð1:26Þ ð1:27Þ ð1:28Þ where V1, V2 are the vertices of the lenses and H, H0 the axial points of the principal planes.

Between the source and the condenser there is a filter F that transmits only the visible part of the source spectrum, so as to prevent heating of the transparency (slide) T that follows the condenser. The slide is imaged on a screen (not in the figure) that is far from L, typically a few meters (at home) or some tens of meters (in a lecture room). Let us assume that the projector source is a 100 W halogen lamp, that will produce about 3,000 lumen. 38 2 Optical Instruments (Paraxial Approximation) How much of this light will reach the screen depends on the aperture of the condenser and the transmission of the components between the source and screen.

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A Course in Lens Design by Chris Velzel


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