| 摘要 |
<p>PURPOSE:To attain movement extraction of a picture in a real time at a high speed even to a high definition picture with lots of information quantity by varying the polarization state of a readout light at a 1st space optical modulator in response to movement picture information, reading an output of the 1st space optical modulator at a 2nd space optical modulator and varying the polarization state corresponding to the moving picture information. CONSTITUTION:An input moving picture introduced from an image forming optical system by a camera lens 2 is formed on space optical modulators 11a, 11b via a beam splitter 15c and a glass block 18b or the like. In order to prevent the inversion of the image at the branch of an input moving picture and production of fog of the image resulting from different optical path length from the camera lens 2 to the space optical modulators 11a, 11b, the beam splitter 15c and the mirror 17 are arranged to the optical system. Thus, the optical path length of two optical paths and the inversion of image are corrected. One beam is made incident in the write face of the space optical modulator 11a and the other beam is transmitted through the beam splitter 15c and the glass block 18b and incident in the write face of the space optical modulator 11b and the image is formed.</p> |
