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Convex mirror lets motorists see around a corner. Detail of the convex mirror in the Arnolfini Portrait. The passenger-side mirror on a car is typically a convex 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.
Vision Zero: system designer has primary responsibility System designers are responsible for the design, operation and the use of the road transport system and are thereby responsible for the level of safety within the entire system. Road users are responsible for following the rules for using the road transport system set by the system designers.
A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses and curved mirrors . Catadioptric combinations are used in focusing systems such as searchlights , headlamps , early lighthouse focusing systems, optical telescopes , microscopes , and telephoto lenses .
The blue car's driver sees the green car through the mirrors but cannot see the red car without turning to check the blind spot (the mirrors are not properly adjusted) As one is driving an automobile , blind spots are the areas of the road that cannot be seen while looking forward or through either the rear-view or side mirrors (expecting that ...
Curvilinear barrel distortion Curvilinear pincushion distortion. Curvilinear perspective, also five-point perspective, is a graphical projection used to draw 3D objects on 2D surfaces, for which (straight) lines on the 3D object are projected to curves on the 2D surface that are typically not straight (hence the qualifier "curvilinear" [citation needed]).
In a circular fisheye lens, the image circle is inscribed in the film or sensor area; in a diagonal ("full-frame") fisheye lens, the image circle is circumscribed around the film or sensor area. This implies that using a fisheye lens for a different format than it was intended for is easy (as opposed to a rectilinear lens), and may change its ...
Apart from offset systems, dish antennas suffer from the feed and its supporting structure partially obscuring the main element (aperture blockage); in common with other refracting systems, the Luneburg lens antenna avoids this problem. A variation on the Luneburg lens antenna is the hemispherical Luneburg lens antenna or Luneburg reflector ...
A driveway alarm is a device that is designed to detect people or vehicles entering a property via the driveway.A driveway alarm system is often integrated as a component of a system which automatically performs a task or alerts home owners of an unexpected intruder or visitor.