Patent ID: 7881606
Filing Date: 2011-02-01
Classification: G03B

Abstract:
1. A split mechanism for a coaxial photographing device, especially a split mechanism between a light projection unit and a photographing unit of a photographing device used in a surveillance system, comprising: a photographing unit, which is enclosed by a semi-opened cup-shape housing having an opening on one side, with the side of the opening being assembled with a photographing module through a wall, and an outer surface; a light projection unit, which is enclosed by a cylindrical housing, and a first end surface at a projection end which is provided with a light emitting module, with a center of the first end surface being provided with an optic through-hole, a second end surface of the cylindrical housing being tightly connected at the opening of the photographing unit, an electric wire conducting electricity between an electronic driving device and the light projection unit; the electronic driving device being provided in an interior of the photographing unit to operate the photographing module and the light emitting module; and a linking device, which is parallel to an optic axis of a lens of the photographing module and is stretched linearly, two ends of which are connected respectively with the photographing unit and the light projection unit, and which further includes a linear shuttle element slidingly connected with a linear guiding element, with limiting elements being provided between a free end of the shuttle element and a free end of the guiding element to limit how far the light projection unit is extended from the photographing unit.