| 摘要 |
PURPOSE:To enable simple and accurate focusing by providing a monitoring device for observing an optical image on the focal plane from behind the focal plane. CONSTITUTION:A monitoring device that observes focussing state by a focussing screen 14, an image forming lens 15 etc. is formed. By providing the focussing screen 14 on the image forming plane on which a photo detecting plane of a CCD array 9 moves, focusing state on the image forming plane can be observed easily from behind the screen. In above-mentioned constitution, the CCD array 9 is set at first with a member 12 to place it on upper end. At this time, the screen 14 is on a plane constituted by movement of the photo detecting plane of the CCD array 9, and the image of a subject 7 is formed by an image forming lens 8. The image of a real-image 10 is formed as a real-image 16 by the image forming lens 15, the image state on the screen 14 can be observed easily from behind a camera. |
