Curved mirror

concave mirrorconvex mirrorconcavespherical mirrorsphericalspherical reflectorconvexcurved mirrorsconvex mirrorscurved
A curved mirror is a mirror with a curved reflecting surface.wikipedia
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Mirror

mirrorslooking glassreflector
A curved mirror is a mirror with a curved reflecting surface.
Curved mirrors are also used, to produce magnified or diminished images or focus light or simply distort the reflected image.

Reflecting telescope

reflectorreflector telescopeprime focus
The most common non-spherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need to image distant objects, since spherical mirror systems, like spherical lenses, suffer from spherical aberration.
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image.

Spherical aberration

aplanaticsphericalspherical aberrations
The most common non-spherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need to image distant objects, since spherical mirror systems, like spherical lenses, suffer from spherical aberration.
Lenses and curved mirrors are most often made with surfaces that are spherical, because this shape is easier to form than non-spherical curved surfaces.

Parabolic reflector

parabolic mirrorparabolicparabolic dish
The most common non-spherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need to image distant objects, since spherical mirror systems, like spherical lenses, suffer from spherical aberration.
In contrast with spherical reflectors, which suffer from a spherical aberration that becomes stronger as the ratio of the beam diameter to the focal distance becomes larger, parabolic reflectors can be made to accommodate beams of any width.

Focus (optics)

focusfocal pointfocusing
Such mirrors always form a virtual image, since the focal point (F) and the centre of curvature (2F) are both imaginary points "inside" the mirror, that cannot be reached.
Diverging (negative) lenses and convex mirrors do not focus a collimated beam to a point.

Objects in mirror are closer than they appear

Objects in the Mirror
In some countries, these are labeled with the safety warning "Objects in mirror are closer than they appear", to warn the driver of the convex mirror's distorting effects on distance perception.
It is present because while these mirrors' convexity gives them a useful field of view, it also makes objects appear smaller.

Distorting mirror

fun house mirrorfunhouse-mirror
Distorting mirrors are used for entertainment.
Instead of a normal plane mirror that reflects a perfect mirror image, distorting mirrors are curved mirrors, often using convex and concave sections to achieve the distorted effect.

Collimated beam

collimatedcollimationcollimated light
A collimated (parallel) beam of light diverges (spreads out) after reflection from a convex mirror, since the normal to the surface differs at each spot on the mirror.
Spherical mirrors are easier to make than parabolic mirrors and they are often used to produce approximately collimated light.

Lens

lensesconvex lensoptical lens
The most common non-spherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need to image distant objects, since spherical mirror systems, like spherical lenses, suffer from spherical aberration.
In these devices lenses are sometimes paired up with curved mirrors to make a catadioptric system where the lens's spherical aberration corrects the opposite aberration in the mirror (such as Schmidt and meniscus correctors).

Arnolfini Portrait

The Arnolfini PortraitArnolfini MarriageThe Arnolfini Marriage
Famous examples in art include the Arnolfini Portrait by Jan van Eyck and the left wing of the Werl Altarpiece by Robert Campin.
The convex mirror at the back, in a wooden frame with scenes of The Passion painted behind glass, is shown larger than such mirrors could actually be made at this date – another discreet departure from realism by van Eyck.

Virtual image

virtualvirtual objectvirtual objects
Such mirrors always form a virtual image, since the focal point (F) and the centre of curvature (2F) are both imaginary points "inside" the mirror, that cannot be reached.

Optical landing system

mirror landing aidMirror landing systemmirror-sight deck landing system
The mirror landing aid system of modern aircraft carriers also uses a concave mirror.
The mirror landing aid was a gyroscopically-controlled concave mirror on the port side of the flight deck.

Toroidal reflector

Toroidal reflector / Yolo telescope
A toroidal reflector is a form of parabolic reflector which has a different focal distance depending on the angle of the mirror.
They suffer from spherical aberration and coma, but do not suffer from astigmatism like a spherical mirror when used in an off-axis geometry, provided the angle of incidence is matched to the design angle.

Sphere

sphericalhemisphereglobose
Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices.

Normal (geometry)

normalnormal vectorsurface normal
A collimated (parallel) beam of light diverges (spreads out) after reflection from a convex mirror, since the normal to the surface differs at each spot on the mirror.

Car

automobileautomobilescars
The passenger-side mirror on a car is typically a convex mirror.

Hall

hallwaymeeting hallcorridor
These mirrors are often found in the hallways of various buildings (commonly known as "hallway safety mirrors"), including hospitals, hotels, schools, stores, and apartment buildings.

Building

buildingsedificepublic buildings
These mirrors are often found in the hallways of various buildings (commonly known as "hallway safety mirrors"), including hospitals, hotels, schools, stores, and apartment buildings.

Hospital

hospitalsinfirmarygeneral hospital
These mirrors are often found in the hallways of various buildings (commonly known as "hallway safety mirrors"), including hospitals, hotels, schools, stores, and apartment buildings.

Hotel

hotelsluxury hotelhotel chain
These mirrors are often found in the hallways of various buildings (commonly known as "hallway safety mirrors"), including hospitals, hotels, schools, stores, and apartment buildings.

School

schoolsschoolingnight school
These mirrors are often found in the hallways of various buildings (commonly known as "hallway safety mirrors"), including hospitals, hotels, schools, stores, and apartment buildings.

Retail

retailerretailingretail store
These mirrors are often found in the hallways of various buildings (commonly known as "hallway safety mirrors"), including hospitals, hotels, schools, stores, and apartment buildings.

Apartment

apartment buildingflatsflat
These mirrors are often found in the hallways of various buildings (commonly known as "hallway safety mirrors"), including hospitals, hotels, schools, stores, and apartment buildings.

Road

roadsroad constructionroad building
They are also used on roads, driveways, and alleys to provide safety for motorists where there is a lack of visibility, especially at curves and turns.