| 摘要 |
A rack is inserted to a longitudinal rack mounting groove formed in both right and left end neighborhood on the backside of an image pickup substrate with a plate spring sandwiched therebetween. A right and left pair of racks are engaged with a horizontal pinion shaft. The rack is pressed to a pinion shaft by a spring force, there is no backlash, and the image pickup substrate is also kept in a state with no looseness. The image pickup substrate moves in parallel with a correct horizontal posture being kept up or down by turning the pinion shaft. A horizontal rack is provided at an upper part on the backside of the image pickup substrate, and performs a right and left shift by operating a vertical pinion shaft which is engaged therewith.
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