Noun
retroreflector (plural retroreflectors)
English Wikipedia has an article on:retroreflectorWikipedia
A retroreflective device or surface.
Aiming is done at night, and the necessary retroreflector area depends on aiming distance and ambient lighting from street lamps. Source: Internet
Direct transmission of data to Earth concluded in late 1977 due to budgetary considerations, citation citation but as the stations' lunar laser ranging corner-cube retroreflector arrays are passive instruments, they are still being used. Source: Internet
An alternative form of the cat's eye retroreflector uses a normal lens focused onto a curved mirror rather than a transparent sphere, though this type is much more limited in the range of incident angles over which it retroreflects. Source: Internet
In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. Source: Internet
The optical receiver itself behaves as a weak retroreflector because it contains a large, precisely focused lens that detects illuminated objects in its focal plane. Source: Internet
Other uses Retroreflectors are used in the following example applications: *In surveying with a total station or robot, the instrument man or robot aims a laser beam at a corner cube retroreflector held by the rodman. Source: Internet