Lens (optics) | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-23

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Lens_(optics)


00:00:53 1 History
00:05:14 2 Construction of simple lenses
00:06:51 2.1 Types of simple lenses
00:09:53 2.2 Lensmaker's equation
00:12:36 2.2.1 Sign convention for radii of curvature iR/isub1/sub and iR/isub2/sub
00:13:32 2.2.2 Thin lens approximation
00:14:29 3 Imaging properties
00:19:33 3.1 Magnification
00:21:55 4 Aberrations
00:22:58 4.1 Spherical aberration
00:23:09 4.2 Coma
00:23:33 4.3 Chromatic aberration
00:23:43 4.4 Other types of aberration
00:24:14 4.5 Aperture diffraction
00:24:24 5 Compound lenses
00:25:35 6 Other types
00:25:43 7 Uses
00:27:00 8 See also
00:28:39 9 References
00:28:57 10 Bibliography
00:29:32 11 External links
00:35:15 11.1 Simulations
00:37:11 Uses



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SUMMARY
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A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis. Lenses are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called lenses, such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses.