Patent ID: 9143666
Filing Date: 2015-09-22
Classification: H04N

Abstract:
1. A surveillance device, comprising: a front cover defining a first through hole; at least two guide rods mounting in the front cover; a lens module mounted on the front cover and received in the first through hole; a mounting plate mounted to the guide rods and being slidable along the guide rods, the mounting plate defining a second through hole corresponding to the first through hole; a first balance spring positioned between the front cover and the mounting plate; a circuit board mounted to the mounting plate and opposite to the first balance spring; an image sensor mounted on the circuit board facing the second through and the lens module; and a number of second balance springs positioned between the mounting plate and the circuit board; wherein the first balance spring presses on the front cover and the mounting plate and the first balance spring press on the front cover and the mounting plate to keep the image sensor being aligned with the lens module.