| 摘要 |
PURPOSE:To obtain small sized and durable conversion mechanism and to obtain pictures with high fidelity, by adopting a ball screw for the converting mechanism between rotating movement and straight line movement, in a two- dimensional image pickup device for mechanical sub-scanning using one-dimensional image pickup elements. CONSTITUTION:The device is provided with a linear slide mechanism which forms an image of an objective through the use of an optical system 12 and moves a CCD sensor 16 toward the sub-scanning direction at a right angle to the arranging direction of the sensor 16 placed on the image forming plane and in parallel with the image forming plane. The conversion mechanism between rotating movement and straight line movement using a ball screw 21 coupled to the slide mechanism is driven with a motor 60. This rotation is detected and a pickup pulse representing the displacement of a prescribed amount toward the sub-scanning direction of the sensor 16 is generated from a rotary encoder 54, an output of the sensor 16 is read at an output controller 92, the shading of the optical system 12 is corrected and the eye field of the picked up screen is determined with a view finder circuit 120 and focused. |
