Importance

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Abstract

An optical reflector is formed by an array of reflecting surfaces arranged one behind another in spaced, generally parallel, relation along a main axis of the array. The reflector has entry and exit faces (11, 12) disposed on opposite sides of, and extending along, the array main axis. The spaces between the reflecting surfaces is preferably occupied by a refractive material. In this case, light entering through the entry face (11) is first refracted and then reflected before being refracted again on leaving through the exit face (12). The main extent of the reflector is unlike a conventional mirror, normal to the plane of reflection. The reflector is thus well suited for use as a vehicle external rearview mirror as it has minimal lateral protection. A reflector array may be produced from a stack of elongate elements having optically worked faces.

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First Claim