Optical Custom K9 Bk7 Glass Right Angle Prism 90 Degree Crystal Quartz Bk7 30 60 90 Degree Prism Mirrors1

Prism Lens
An optical prism is a solid, transparent optic with flat surfaces which refract light. Light enters through one surface, and may be rotated, deviated, or dispersed before leaving through another surface. These surfaces are highly polished, and the angles between them, the number of surfaces, and the position of them determine the function of the prism. Since optical prisms redirect light at a designated angle, they may be used to reflect light, to bend it within a system, to change the orientation of an image, or to break light up into it component wavelengths or polarizations. Isaac Newton used a simple prism to disperse a beam of white light into the full spectrum of component colors, proving that white light was in fact nothing but a combination of colors. This same dispersion technique is still used in spectrographs and refractometers. Optical prisms can also be used, in reverse, to combine optical beams into one.