A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects radiation (usually light) back to its source with minimum scattering.

Retroreflectors reflect an image or beam back 180° toward its original direction. Prisms achieve this either through total internal reflections (TIR) or specular reflections, depending on whether the reflective faces are coated.

There are several different types of retroreflectors available, each with their own specific properties and applications. A common type is the corner reflector, which uses a set of three mirrors arranged in a triangular shape to reflect incoming light back to its source. The prism reflector uses a set of prisms to reflect light back to its source.

逆反射（Retroreflection）一词由两部分组成，Retro的意思是向后的，Reflect 的意思是反射。 Retro－reflection在这里是特指光线照射到一表面后反射回到光源方向的现象。 具有逆反射功能的反光材料有 反光膜 、反射器、反光标线、 反光衣 物等，广泛应用在道路交通标志、标线、交通工具反光标识、特殊作业服装、消防标志、铁路标志、矿区标志等领域，在保证交通安全等领域起到了重大作用。 逆反射系数 的物理意义是：在单位光照条件下，单位面积上产生的亮度值，单 …

Retroreflectors are simple geometric conducting structures that concentrate the reflected wave back in the direction of incidence. They are capable of producing a high RCS over a wide range of aspect angles. This thesis examines the RCS performance …

2023年10月31日 · Retroreflectors (or “cube corners”) are designed to reflect light back to the point of origin in a narrow beam. Increasing the size or number of retroreflectors increases the return signal strength. Figure 1 illustrates the two basic types of cube corner, i.e., solid or hollow.

2024年5月21日 · A retroreflector reflects incoming light and directs it back to its source. The light is reflected parallel to the direction it came from, but in the completely opposite direction. Common types include the corner cube retroreflector, which can send light back long distances and is useful on highways.

Retroreflectors are used where it is essential to maintain the direction of the reflected beam without precisely keeping the right orientation of the reflecting device. Some examples: A few retroreflectors have been placed on the Moon, e.g. during the Apollo missions, and can be used for time-of-flight measurements of the distance between Earth ...

Retroreflectors, or corner-cube prisms, are optical devices that return any incident light back in exactly the direction from which it came. The central design concept is a trio of mutually perpendicular surfaces such as is found at the corner of a cube (look up into the corner of the room where the ceiling hits the walls).

2023年8月7日 · A retroreflector is an optical device designed to reflect light back toward its source with minimal scattering. Unlike mirrors, lenses, or prisms that disperse or refract light in various directions, retroreflectors ensure that incoming light is directed back to its origin.