| 摘要 |
<p>PURPOSE:To simultaneously refer to the image information and the position information and to improve the workability of an image input device by using a general-purpose drawing set to an XY axis shift table, a video camera to the image input device, and an electric zoom lens to viewfield angle varying device respectively. CONSTITUTION:The movable grip 4 of an XY drawing set 3 can be manually moved in the XY direction. Then the set 3 photographs the desired area of a substrate 5 with a video camera 10 and inputs a converted video signal 13 to a superimposer 14. At the same time, the set 3 inputs the pulse signals 17 and 18 which increase/decrease in accordance with the XY shift extent to the superimposer 14. Then an electric zoom lens 11 inputs a pulse signal 19 which is increased decreased in response to the viewfield angle varying extent of the lens 11. The superimposer 14 converts the signals 17 and 18 into the coordinate data and the signal 19 into the magnification data respectively and produces a font signal. This font signal and the signal 13 given from the camera 10 are turned into a combined signal 20. Then the signal 20 is inputted to a monitor 21 and displayed there. Thus an operator can know the image and the position of the substrate 5 in photographing.</p> |
