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A simple component, made of a light-refracting and transparent material such as glass and bounded by two or more plane surfaces at an angle (Fig....


= Encyclopedia Article; = Research Update
Figure 1.Optical prism, consisting of a refracting medium bounded by two surfaces. Dispersion of light into its component colors is shown. (After W. J. Smith, Modern Optical Engineering, 3d ed., SPIE Press–McGraw-Hill, 2000)
From Encyclopedia article 'Optical prism'
Figure 2.System of two Porro prisms, used to invert the image in traditional binoculars. (After R. E. Hopkins and R. Hanau, U.S. Military Handbook for Optical Design, republished by Sinclair Optics, 1987)
From Encyclopedia article 'Optical prism'
Figure 3.Pentaprism, used in single lens reflex cameras. (a) Perspective view, showing how the prism deviates light through an angle of 90° without inverting or reverting the image. (b) Ray diagram. (After R. E. Hopkins and R. Hanau, U.S. Military Handbook for Optical Design, republished by Sinclair Optics, 1987)
From Encyclopedia article 'Optical prism'
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