Side-emitting collimator

Details Side-emitting collimator Side-emitting collimator

2006-08-01

2006-08-01

Husar, Stephen F (Department: 2875)

Illumination

Light fiber, rod, or pipe

Light emitting diode

C362S327000, C362S335000, C362S800000

Reexamination Certificate

active

07083313

ABSTRACT:
A side-emitting collimator employs a combination of refraction and internal reflection to organize light from a light source into oppositely directed collimated beams. A light source chamber over the light source is defined by substantially cylindrical and aspheric refracting surfaces positioned to gather light into the collimating lens. The aspheric refracting surfaces redirect a portion of the light from the light source into a direction perpendicular to the optical axis of the light source. The substantially cylindrical surfaces refract light from the light source onto an aspheric upper reflecting surface. Light incident upon the aspheric upper reflecting surface is collimated into a direction perpendicular to the optical axis of the light source. The side-emitting collimator includes mirror image collimator halves, each producing a collimated beam. The collimator halves are rotationally symmetric about a common axis of symmetry above a plane including the axis of symmetry.

REFERENCES:
patent: 6547423 (2003-04-01), Marshall et al.
patent: 6679621 (2004-01-01), West et al.
patent: 6724543 (2004-04-01), Chinniah et al.

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