Surgical light with stacked elliptical reflector

Details Surgical light with stacked elliptical reflector Surgical light with stacked elliptical reflector

1997-06-11

1999-10-26

Cariaso, Alan

Illumination

Light source and modifier

Including reflector

362 33, 362293, 362350, 362804, F21V 708, F21V 904

Patent

active

059715693

ABSTRACT:
A surgical lighthead having a stacked elliptical reflector (20) directs light from a lamp (10) to an illumination zone (Y) without the need for a refractor to redirect the reflected light. The reflector is formed of at least three annular reflector segments (22, 24, 26) stacked on top of each other to form a continuous reflector surface. Each of the reflector segments has a longitudinal cross section of a different conical shape such as elliptical or parabolic for directing the light to a different portion of the illumination plane. The stacked elliptical reflector provides the benefits of reduction of the image of the filament in the light field and reduction of shadowing due to objects passing between the lighthead and the illumination plane.

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