| 摘要 |
<p>PURPOSE:To provide the above optical device unit which prevent entrance of dust, improves precision of image-formation position and can reduce the cost. CONSTITUTION:A first housing chamber 2 for housing an array light source 6 or the whole of array sensors and a second housing chamber 3 for housing an equimultiple image-formation device 7 are formed in one housing 1, so as to prevent entrance of dust into the housing 1 and to maintain correctly relative position of the array light source 6 or the array sensors and the equimultiple image-formation device 7. A reference unit 5 for supporting the array light source 6 or the array sensors pressured by a pressure member 10 and for positioning them is formed in the first housing chamber 2. Further, the housing 1 is easily formed by extrusion with precise dimension.</p> |
