| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for efficiently housing a circuit board, whose number of parts is large and which requires mounting area, inside a photographing device, and to provide the circuit board whose electric adjustment, electric inspection, electric connection or the like after fixation is facilitated. SOLUTION: A main board 2 is constituted of a multilayered flexible printed board having four-layered wiring layers, and parts 2a, 2b, 2c and 2d are component mounting parts for mounting components and are constituted of four- layered wiring layers. Parts 2g, 2f and 2e are connection parts for electrically connecting the respective component mounting parts and are constituted of one wiring layer. The component mounting parts of the multilayered flexible printed board are arranged to be superposed in an outside diameter direction with respect to an optical axis and in an optical axis direction, whereby component mounting area is secured. An electric adjusting means, an electric inspection means and an electric connection means are arranged in an area where the component mounting parts are not superposed in the outside diameter direction and the optical axis direction, thus workability is improved.
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