Light expanding system for producing a linear or planar light be

Details Light expanding system for producing a linear or planar light be Light expanding system for producing a linear or planar light be

1994-10-19

1996-04-09

Bovernick, Rodney B.

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

G02B 610

Patent

active

055069290

ABSTRACT:
A light expanding system for converting a light beam generated from a point-like light source into a collimated linear or planar light beam is disclosed herein. According to an embodiment of the invention, a system for producing a linear light beam includes a beam collector and a light pipe adjacent to which a multiplicity of specially configured microprisms are located. The light expanding system according to this embodiment is suitable for use in devices utilizing a linear light beam, such as a scanner. According to another embodiment of the invention, a system for producing a planar light beam includes, in addition to the beam collector and light pipe described above, an additional light pipe with adjacent microprisms. The light expanding system according to this embodiment of the invention can be used, for example, in displays, road signs, medical research equipment, instrument meters or jewelry; to light pictures or art work; or as part of a see-through lighting system for use in dentistry and surgery.

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Retroreflecting Sheet Polarizer, by M. F. Weber, SID 92 Digest 427-429, Jan. 1992.

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