| 摘要 |
PROBLEM TO BE SOLVED: To prevent a plastic burr from being ground into powder when male screw and female screw portions are screwed together, and to avoid leakage of light from the screwed parts. SOLUTION: A camera circuit board 1 to which an imaging device 2 is connected is connected to a main body circuit board 10. An optical apparatus unit 3 is connected at a position with respect to the photographing element 2 to enable an image to be photographed by the photographing element 2 to the camera circuit board 1. The optical apparatus unit 3 comprises a holder 31 for holding a lens 32 at an inner portion thereof, the holder having a male screw portion 31a at an outer periphery thereof, and a main plate 5 having a holder receiver provided with a female screw portion 51a corresponding to the male screw portion 31a of the holder and connected to the camera circuit board 1. The holder 31 is molded of plastic and the male screw portion 31a of the holder 31 is provided with a first male screw portion 31a2 having a diameter smaller than the other parts of the male screw portion 31a and a separating line at plastic forming is placed to the male screw portion 31a2. A screw thread of the male screw portion 31a2 having the smaller diameter is set to overlap by a predetermined amount E a screw thread of the female screw portion 51a.
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