| 摘要 |
A monitoring camera has a body ( 10 ), a focus ring ( 20 ), a lens ( 30 ) and an optional control cover assembly ( 50 ). The focus ring ( 20 ) has an inner flange with an inner threaded surface ( 24 ) and an outer threaded surface ( 23 ) to attach respectively to the lens ( 30 ) and the body ( 10 ). The structure allows the lens ( 30 ) to be focused over a broad range. Additionally, the control cover assembly ( 50 ) is attached to a side face of the body ( 10 ) to cover and protect multiple switches ( 16 ) on the body ( 10 ).
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