Lighting device for fundus cameras

摘要

The present invention relates to a lighting device comprising a light concentrator device operatively associated with a light source comprising a plurality of LED devices. The light concentrator device is composed of a solid transparent body comprising: a first surface (51), at which a light input section (5) is defined to receive the light radiation emitted by the light source; and—a second surface (61), at which a light output section (6) is defined to transmit a light beam having a ring shape; and a plurality of protrusions (7) that protrude from said first surface, at said light input section, said protrusions acting as collimation lenses of the light radiation coming from said light source; and—a plurality of reflection surfaces (8, 9) of the light radiation received from said light input section, said protrusions and said reflection surfaces being mutually positioned so as to convey the light radiation coming from said light source along a predefined path, which extends internally to said transparent body, between said light input section and said light output section.

主权项

1. A lighting device for a fundus camera comprising:
a light source-provided with a plurality of LED devices that emit light in a direction substantially perpendicular to a surface on which the LED devices are mounted; a light concentrator device, which is operatively associated with said light source, said light concentrator device comprising a solid transparent body that comprises:
a first surface facing the surface on which said LED devices are mounted, at which a light input section is defined to receive the light radiation emitted by said light source; anda second surface, at which a light output section is defined to transmit a light beam having a ring shape, said light output section being smaller than said light input section; anda plurality of protrusions that protrude from said first surface, at said light input section, said protrusions acting as collimation lenses of the light radiation coming from said light source; anda plurality of reflection surfaces of the light radiation received from said light input section, said protrusions and said reflection surfaces being mutually positioned so as to convey the light radiation coming from said light source along a predefined path, which extends internally to said transparent body, between said light input section and said light output section.