Surgical lamp field shape

摘要

A surgical lamp includes a lamp body with illuminants emitting bundled light beams with axes intersect a central axis of the lamp body, and illuminants emitting bundled light beams with axes that do not intersect the central axis. The shape of the light field and the distribution of the light intensity can be modified by driving different illuminants.

主权项

1. A surgical lamp, comprising:
a lamp body having a central axis, the lamp body comprising first and second groups of illuminants, the first group comprising a first illuminant configured to emit a first bundle of light beams and a second illuminant configured to emit a second bundle of light beams, and the second group comprising a third illuminant configured to emit a third bundle of light beams, wherein axes of the first and second bundles of light beams are directed to a common point on the central axis, and an axis of the third bundle of light beams is directed to a point offset from the central axis; a control device adapted to operate the first and second groups of illuminants in a manner such that the surgical lamp can produce an overall light field having a shape that is non-circular; and a device adapted to independently adjust a brightness of the third illuminant and adapted to independently turn on and off the third illuminant according to data stored in the control device to adjust the third bundle of light beams directed to the point offset from the central axis such that the shape of the overall light field changes from a first shape of a plurality of defined light field shapes to a second shape of the plurality of defined light field shapes at an operation site, wherein the plurality of defined light field shapes is associated with the data and comprises substantially rectangular light field shapes or substantially oval light field shapes.