| 摘要 |
PROBLEM TO BE SOLVED: To prevent inadvertent rotation owing to repulsion of a flexible substrate after finishing adjustment of an optical module by preparing the flexible substrate electrically connected to the circuit part of an appliance and a leaf spring pressing the optical module against a chassis to hold it. SOLUTION: When an optical module 20 is adjusted, although a front flexible substrate 31 is rotated, since a right side flexible substrate 33 is rotated around the square hole inversely relative to the turning direction of the optical module 20, no force is exerted on the connected part 35 (corner part) between the front and right side flexible substrates 31, 33. Therefore, after adjusting the optical module 20, torque returning the module to the original position is not exerted, and the position is easily adjusted. Whereby, a positional deviation of a beam spot is prevented, and reading quality is improved. Also, a stress exerted on the connected part 35 when the optical module 20 is turned and adjusted is more reduced by providing the connected part 35 with deflection and further thinning and narrowing the width of the connected part. |
