| 摘要 |
<p>The invention relates to an optical image-forming apparatus having an illuminating device for illuminating an object's surface, and having a viewing or photographing device for viewing and/or photographing the object's surface. The invention is characterised in that the optical apparatus further has a light-receiving device which is capable of receiving light from the illuminated object's surface, in that a detector is provided for detecting the brightness distribution of the object's surface by means of the output signal from the light-receiving device, and in that a control device is provided in order to control the brightness distribution of the illuminating light, which is projected from the illuminating device onto the object's surface, by means of the output of the detector.</p> |
