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About Optical Mirrors
Optical mirrors have a smooth, highly-polished, plane or curved surface for reflecting light. Usually, the reflecting surface is a thin coating of silver, or aluminum on glass. Product specifications for optical mirrors include diameter, radius of curvature, thickness focal length, and surface quality. The diameter or height of an optical mirror is measured straight on. If the optical mirror’s curvature was extrapolated into a sphere, then the radius of that sphere is the radius of curvature for the mirror. There are two thickness measurements for optical mirrors: center thickness and edge thickness. Units of measure include inches, feet, and yards; nanometers, centimeters, and millimeters, and miles and kilometers. With optical mirrors, focal length is the distance from the mirror at which light converges. Surface quality describes digs and scratches. A dig is a defect on a polished optical surface that is nearly equal in terms of length and width. A scratch is a defect whose length is many times its width.
Engineering Web: Optical Mirrors - Machine Design
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Optical Flat Mirrors | Machine Design Optical Flat Mirrors September 1, 2005 |
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Tight Squeeze: Optical Imaging For Cramped Quarters | Machine... Tight Squeeze: Optical Imaging For Cramped Quarters These sensors are often optical imaging systems. |
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Ultra-thin mirror for high-performance optics | Machine Design Berkeley, have created mirrors that pack the same 99.9% reflectivity as current distributed Bragg reflector (DBR) mirrors, but do so in packages 20 |
