| 摘要 |
PURPOSE:To form no signal part in video signal without reference to the size and movement of input video, by locating the optical strong filter on the pickup tube optical injection surface inside TV camera. CONSTITUTION:Optical strong filter 22 is placed between lens system 21 of TV camera and image pickup tube 23. Rectangular 22a or 22b located on the center of circle of the filter 22 is the opening for incidence. The short side of this opening agrees with horizontal scanning direction of image pickup tube 23 and opening width is decided to 1/4 horizontal scanning length of image pickup tube 23. Filter 22 is placed in the center of the optical incident window of the image pickup tube 23. Consequently, mutual correlation video in horizontal scanning direction of the picked up image and previously formed optical image can be observed on the same picture tube as the input video simultaneously or only correlation video can be observed on the center of the picture tube. Therefor, it is not required to make X-axis reversed image signal such as the conventional device and camera can perform sin gle horizontal scanning. |
