| 摘要 |
PURPOSE:To incorporate a projection lens and a mirror which are associated with each other in an optical system and to adjust the position of only the mirror by driving a moving means by a movement driving means which is provided separately from a driving source and moving the connection part between the 2nd driving medium and mirror. CONSTITUTION:A frame body 53 holds a reverse projection focus drum 55 which has a pattern 54 of reverse projection images 54a, 54a... formed of stripes for magnification and focus detection, the 1st and the 2nd stepping motors 56 and 57 for adjustment which adjust the positions of the projection lens 7 and the 4th mirror 8, and a mount plate 58 where an optical unit A is mounted while positioned, and an image sensor 60 (detecting means) composed of a CCD, etc. Further, a control unit 61 (control means) which incorporates a microprocessor is supported to constitute the titled adjusting device. |
