Optical device and collision prevention method of lens
An optical device and lens technology, applied in optics, optical components, installation, etc., can solve the problem of high cost and achieve the effect of collision prevention, low cost, and simple operation principle
Inactive Publication Date: 2013-04-24
ASIA OPTICAL CO INC
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide an optical device and a lens collision prevention method thereof, which can achieve the purpose of preventing collisions at a low cost, in view of the defect that the cost of related components of the optical device is relatively high in the prior art
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Embodiment Construction
[0013] figure 1 is a perspective view showing an optical device 100 according to an embodiment of the present invention, figure 2 is a block diagram showing an optical device 100 of an embodiment of the present invention. refer to figure 1 , 2 , the optical device 100 of the embodiment of the present invention includes a lens 110 , a driving unit 120 , a control unit 130 , a frame 140 and a boundary sensing unit 150 . The lens 110 includes a metal lens barrel 111 . The driving unit 120 connects and moves the lens 110 . The control unit 130 is electrically connected to the driving unit 120 to control the movement of the lens 110 . The bezel has inner walls 141, the bezel 140 defining the lens shift range. The boundary sensing unit 150 is disposed on the inner wall 141 .
[0014] collocation reference figure 1 , 3 , image 3 is a detailed structure showing the boundary sensing unit 150 . The boundary sensing unit 150 includes an integrated circuit 151 , a flexible ci...
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The invention relates to an optical device and collision prevention method of lens. The optical device comprises a lens, a driving unit, a controlling unit, a side frame and a boundary sensing unit. The lens comprises a metal lens barrel. The driving unit is connected with the lens and the lens is moved by the driving unit. The controlling unit is electrically connected with the driving unit to control the movement of the lens. The side frame is provided with an internal wall; the lens movement range is defined by the side frame. The boundary sensing unit is installed on the internal wall, which comprises an integrated circuit and a plurality of sensing components. The integrated circuit is electrically connected with the controlling unit. The sensing component is electrically connected with the integrated circuit. These sensing components are equidistantly arranged on the internal wall to surround the lens; while the metal lens barrel approaches to any sensing component, the capacitance of the sensing component is changed; the integrated circuit sends the position sensing signal towards the controlling unit according to the change of the capacitance of the sensing component; and the movement of the lens is controlled by the control unit according to the position sensing signal.
Description
technical field [0001] The invention relates to an optical device, in particular to an optical device with the function of preventing lens collision and a method for preventing lens collision. Background technique [0002] The existing optical device is disclosed in Taiwan Patent Publication No. 200905354. In existing optical devices, in order to prevent the lens from colliding with the frame, the control unit generally calculates the number of steps of the stepping motor to determine the position coordinates of the lens, and then compares the position coordinates with the critical coordinates in the database. Yes, to determine whether a collision will occur. However, in the prior art, the overall cost of the optical device is increased due to the high cost of devices such as stepping motors, control units, and database memory. In addition, due to the complicated calculation steps, in order to avoid inertial collisions, it is necessary to reduce the moving speed of the len...
Claims
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IPC IPC(8): H04N5/232G02B7/02G03B17/12
Inventor 赖英泽梁志玮
Owner ASIA OPTICAL CO INC