| 摘要 |
<p>500,696. Light-sensitive cells. SUDDEUTSCHE APPARATE-FABRIK GES. June 28, 1938, No. 19142. Convention date, June 30, 1937. Drawings to Specification. [Classes 39 (i) and 40 (iii)] A barrier-layer cell has a coating of fluorescent material, preferably separated from the cell by a layer of varnish, so that the cell will respond to X-rays. Two such cells may be placed so that the fluorescent layers are in contact or so that the fluorescent layer of one is in contact with the base of the other.</p> |
