Patent ID: 6072623
Filing Date: 2000-06-06
Classification: A61B

Abstract:
A slit lamp microscope comprising:a first illumination system further comprising:a first illumination means for lighting an object;a first condenser lens for converging light downstream from the first illumination means; anda slit for the passage of light from the first illumination means to the object, the slit being downstream from the condenser lens;wherein the first illumination system is for projecting local illumination light onto an object such as an eye to be examined for observing a focus point of the slit lamp microscope which is a cross section of an observation portion of the eye to be examined; anda second illumination system further comprising:a second illumination means for lighting the object;a second condenser lens for converging light downstream from the second illumination means; andan illumination field limiting mechanism for blocking light from the second illumination means directed toward the focus point of the slit lamp microscope;wherein a portion peripheral to the cross section of the observation portion of the illumination field of the eye to be examined by said first illumination system is illuminated for enabling the simultaneous observation of the peripheral portion of the observation portion.