Beam-forming lens with internal cavity that prevents front losse

Details Beam-forming lens with internal cavity that prevents front losse Beam-forming lens with internal cavity that prevents front losse

1997-06-09

1998-05-26

Ben, Loha

Optical: systems and elements

Lens

Including a nonspherical surface

359711, 359712, 359869, G02B 302

Patent

active

057575576

ABSTRACT:
A device for directing light longitudinally forwardly, that comprises a lens body having a front face facing forwardly, rearward body extent, and a curved sidewall extending between the rearward body extent and the front face; a rear cavity in the body, the cavity having a sidewall and a front wall defining a corner; and a light source in the cavity, and characterized in that light rays transmitted by the light source toward the curved sidewall, and toward the corner are collimated forwardly.

REFERENCES:
patent: 4770514 (1988-09-01), Silverglate
patent: 5235470 (1993-08-01), Cheng
patent: 5485317 (1996-01-01), Perissinotto et al.

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