| 摘要 |
A two-dimensional image detector includes an array sensor 1 having multiple pixels 11 arranged in a matrix. A mask 2 is provided in opposition to a surface of the array sensor on which detection is effected, the mask having windows 21 each having an area smaller than that of each pixel. A mask shifter 3 is provided for changing the positions of the windows at pitches smaller than those between the pixels. The mask may consist of an array of LCD type elements whose polarization is controllable by electrical signals. By correct setting of such signals a series of transmissive window can be produced in the mask and these can then be caused to scan across the sensor array by means of said signals. <IMAGE> |
