| 摘要 |
A distance adjusting apparatus is disposed between a first optical module and a second optical module for adjusting the distance between the two optical modules and includes a supporting component, a stroke ring and an elastic component. The supporting component includes a bump. The stroke ring includes a spiral surface. Two ends of the elastic component are respectively connected to the first and the second optical modules. An elastic restoring force generated by the elastic component is applied onto the first and the second optical modules, so that the bump presses the spiral surface. By applying a force onto the stroke ring to rotate the spiral surface, a relative movement occurs between the bump and the spiral surface, so that a relative displacement of the stroke ring moving forward along an axial direction is controlled, and that the distance between the first and the second optical module is adjusted.
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