| 摘要 |
<p>PROBLEM TO BE SOLVED: To find an improving scheme which can realize permanent vision free of disturbance to guided-in information irrelevantly to the lightness or contrast of an imaged body. SOLUTION: In the device which controls the lightness of a signal superposed on object video by an optical observation device (microscope) having a main optical path (20), a main objective (7), and a beam splitter (6) guiding a video signal generated by an insertion incidence device into the main optical path (20), a measuring instrument which adapts the lightness and contrast of the guided-in information to the video lightness and video contrast of the main optical path (20) through an adjuster in an operation state is arranged in the main optical path (20) and imaging on a lightness, contrast detector (1) which performs detection for every zone or pixel is totally performed to directly measure the lightness of a body (8).</p> |
