| 摘要 |
PURPOSE:To improve the efficiency of the adjustment by projecting a composite pattern resulting from composing a focus adjustment pattern and a position adjustment pattern into a lens unit and implementing the focus adjustment and the position adjustment simultaneously without replacing the adjustment chart. CONSTITUTION:A charge coupled device(CCD) optical unit 4 is a combination of a CCD board 5 having an image pickup face on which plural picture elements are arranged linearly and a lens unit 6 forming the image of the picture on the CCD image pickup face. An adjustment chart 3 is a result of a composite pattern drawn through making a focus adjustment pattern 13a and a position adjustment pattern 13b composite on the belt-like white sheet. The adjustment chart 3 is used to project the composite pattern onto the lens unit 6, then the focus adjustment and the position adjustment are implemented simultaneously without replacing the adjustment chart 3. Thus, the efficiency of the adjustment is improved. |
