Device for emitting light diverging along imaginary plane

Details Device for emitting light diverging along imaginary plane Device for emitting light diverging along imaginary plane

1991-10-24

1995-09-05

Arnold, Bruce Y.

Optical: systems and elements

Lens

Including a nonspherical surface

359708, 359726, B29D 1100

Patent

active

054484154

ABSTRACT:
There is disclosed a device for emitting light diverging along an imaginary plane. This device includes a light source, a collimating lens, and a cylindrical optical element which are mounted within a casing. A reflecting surface, inclined with respect to an axis of the optical element, and a cylindrical surface extending along the axis of the optical element are formed on one end portion of the optical element disposed near one end portion of the casing. That portion of the optical element including this cylindrical surface serves as a cylindrical lens portion. The beam from the collimating lens advances along the axis of the optical element, and is reflected by the reflection surface to be directed toward the cylindrical lens portion. This reflected beam is converted by the cylindrical lens portion into a beam diverging along the imaginary plane disposed generally perpendicular to the axis of the optical element, and is emitted from the casing.

REFERENCES:
patent: 4963021 (1990-10-01), Nakamura et al.

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