# mirror optics

## Mirror optics

The use of plane or curved reflecting surfaces for the purpose of reverting, directing, or forming images. An optical surface which specularly reflects the largest fraction of the incident light is called a reflecting surface. Such surfaces are commonly fabricated by polishing of glass, metal, or plastic substrates, and then coating the surface of the substrate with a thin layer of metal, which may be covered in addition by a single or multiple layers of thin dielectric films. The law of reflection states that the incident and reflected rays will lie in the plane containing the local normal to the reflecting surface and that the angle of the reflected ray from the normal will be equal to the angle of the incident ray from the normal. See Geometrical optics

The formation of images in the plane mirrors is easily understood by applying the law of reflection. The illustration shows the formation of the image of a point formed by a plane mirror. Each of the reflected rays appears to come from a point image located a distance behind the mirror equal to the distance of the object point in front of the mirror. The face of the observer can be considered as a set of points, each of which is imaged by the plane mirror. Since the observer is viewing the facial image from the object side of the mirror, the face will appear to be reversed left for right in the virtual image formed by the mirror. The illustration also indicates the redirection of light by a plane mirror, in that a viewer who cannot observe the object point directly can observe the virtual image of the point formed by the mirror. A simple optical device which is based on this principle is the simple mirror periscope, which uses two mirrors to permit viewing of scenes around an obstacle.

Formation of images by a plane mirror

A curved mirror, either spherical or conic in form, will produce a real or virtual image in much the same manner as a lens, but generally with reduced aberrations. There will be no chromatic aberrations since the law of reflection is independent of the color or wavelength of the incident light. See Aberration (optics), Optical image

Both concave and convex spherical mirrors are commonly encountered. Convex mirrors are commonly used as wide-angle rearview mirrors in automobiles or on trucks. A common application of concave mirrors is the magnifying shaving mirror frequently found in bathrooms.

A spherical mirror will form an image which is not perfect, except for particular conjugate distances. The use of a mirror which has the shape of a rotated conic section, such as a parabola, ellipsoid, or hyperboloid, will form a perfect image for a particular set of object-image conjugate distances and will have reduced aberrations for some range of conjugate relations. The most familiar applications for conic mirrors are in reflecting telescopes. See Optical prism, Optical surfaces, Reflection of electromagnetic radiation, Telescope

## mirror optics

[′mir·ər ′äp·tiks]
(optics)
The science and technology of mirrors which, by means of reflecting rays of light, either revert optical bundles or focus them to form images.
References in periodicals archive ?
Tenders are invited for Energy Efficient Luminaire 2X28 W, T-5 Fitting Box Type Mirror Optics Type Ceiling Mounted/Suspension Type Complete With Integrated Electronic Ballast, Crca Body, Wall Mounted Type, Confirming To The Rdso Specification No.
Damage to extreme ultraviolet (EUV) and x-ray mirror optics due to carbon deposition in vacuum systems is a well-known effect (1).
Goodrich's primary mirror optics and structure weigh only 28 kg, enabling the observatory to carry more liquid helium coolant and therefore extend the mission life of the telescope.
Its kid-friendly design (a durable plastic body and base) and 76mm precision mirror optics are perfect for both night-viewing of the sky and day-viewing of Mother Nature.
The Eye-Trek uses a "free-shaped prism" that produces superior brightness and is lighter than units using concave mirror optics.
In compliance with the standard for this laser power class, the welding optics consist of mirror optics with a parabola focusing mirror.
In support of this effort, Goodrich designed and manufactured the precise mirror optics as part of the Smithsonian Astrophysics Observatory (SAO) team, which then supplied the completed instrument to NASA.
For example, a special mirror optics system in the instrument display gives an impression of depth.
Tenders are invited for Inspection, Supply, Training, Installation And Commissioning And Warranty Of X-Ray Diffraction Instrument With Focusing Mirror Optics And High Temperature Attachments" As Per Attahced Technical Specification.
10 /PRNewswire/ -- Ball Aerospace today announced that a team led by Northrop Grumman, has selected beryllium for the primary mirror optics on the James Webb Space Telescope (JWST).
Tenders are invited for Misc Repair To Internal Electrification Of Certain Areas Mil Stn Pithoragarh, Charmagad And Champawat Including Replacement Of Unserviceable Post Top Lantern, Garden Light, Wall Bracket, Mirror Optics With Led Light Under Ge Pithoragarh
The second patent application for the mirror optics has been submitted and is pending approval in both Europe and the U.

Site: Follow: Share:
Open / Close