EXAMINATION INSTRUMENT

摘要

Light from an exit pupil (112) of an illumination unit (100) is directed to a beam splitter (102) which directs the light to an objective (104). The retina (128) is illuminated, if a real image of the exit pupil (112) of the illumination unit (100) and a real image of an entrance pupil (114) of a camera unit (106) are formable in a position ranging from the corne a (120) to the backside (126) of the crystalline lens (124) with the light. The objective (104) forms a real intermediate image (130) of the retina (128) between the objective (104) and the camera unit (106). The beam splitter (102) directs the light from the retina (128) to the camera unit (106), while causing the path (134) of the illumination and the path (132) of the imaging to deviate for non-overlapping images of the exit pupil (112) and the entrance pupil (114) in the crystalline lens (124). A relay lens system (138) forms a real image of the intermediate image (130) on a detecting component (136) with the light reflected from the retina (128) for transforming the image into an electric form to be shown on a screen (150).