Illumination system for opthalmic microscope, and its operation method

摘要

The present invention discloses a illumination system for ophthalmic microscope and its operation method. Light beams generated by White LED, passes through the condenser and relay system to produce illumination on retina of the eye and boundary of the illumination is determined by the aperture stop. To enhance the visualization of red glow, a Single source beam then divided into two beams using divider system contains Beam splitter and mirror. Transmitted beams and reflected beams are made to focus on circular areas coated with reflective material of virtual beam splitter which is positioned coaxially with observation system of the microscope. Focused beam then passes through the objective lens of the microscopic system. Reflected beams from retina then passes through the objective lens and reaches the observation system via Virtual Beam Splitter.

主权项

1. An illumination system of an ophthalmic microscope, said system comprising:
(a) a light source, said light source comprising at least one light emitting component(s), said light emitting component(s) capable of emitting light radiation, said light radiation having a wavelength in the visible spectrum that is non-toxic to the eye of the patient; (b) a condenser lens system, said condenser lens system is positioned to receive the light radiation emitted from said light source; (c) an aperture stop positioned downstream of said condenser lens system, said aperture stop determines an area of illumination at a target site; (d) a relay lens system positioned downstream of said aperture stop, said relay lens system transmits light rays from said aperture stop to a beam splitter prism positioned downstream of said relay lens system; (e) said beam splitter prism divides a convergent beam from said relay lens system into plurality of beams; (f), a beam splitter positioned downstream of said beam splitter prism, said beam splitter being selectively coated with reflective material; and (g) an observation system.