Abstract: A combination battery charger is disclosed to include a housing, a first electric plug pivoted to the housing for connection to the electric socket for cigarette lighter of a motor vehicle and turnable in and out of a first outside open chamber of the housing within the range of 0 to 180° to fit different installation angles, a second electric plug pivoted to the housing for connection to a city power supply outlet and turnable in and out of a second outside open chamber of the housing, and a charging circuit board mounted inside the housing and electrically connected to the first electric plug and the second electric plug for converting city power supply/car battery power supply into a charging power supply for charging a battery being inserted into a third outside open chamber of the housing and set into contact with metal contacts of the charging circuit board that are suspended in the third outside open chamber.

Abstract: A video monitoring device is constructed to include a casing formed of a hollow bottom shell and a top cover, which covers the bottom shell and is horizontally rotatable on the bottom shell, a camera turnable about a horizontal pivot at the top cover, and a driver mounted inside the bottom shell and controlled to rotate the top cover and the camera horizontally on the bottom shell and to turn the cameral vertically about the horizontal pivot.

Abstract: A camera platform assembly is disclosed and claimed to include a control base adapted to receive control signal, a rotary table horizontally rotatably supported on the control base and controlled to rotate horizontally on the control base by control signal received by the control base, and movable rack pivoted to the rotary table and adapted to carry a camera and to adjust the angle of inclination of the camera.

Abstract: A detachable zoom lens assembly includes a holder base, which has an insertion slot in the periphery and a light path through the two ends, a coupling structure for coupling the holder base to a photographic apparatus, a special effect unit detachably inserted into the insertion slot to hold a special effect lens in the light path, and a zoomer coupled to the front end of the holder base to hold a zoom lens for changing the focus of incident light.

Abstract: A tripod includes a supporting base for positioning, a rotary camera platform assembly fastened pivotally with the supporting base, a driving mechanism adapted to rotate the camera platform assembly alternatively forwards and backwards on the supporting base, and a control mechanism adapted to control rotation of the camera platform assembly within a predetermined range of angles, the control mechanism including a graduation dial for rotary motion with the camera platform assembly, two micro switches, a trigger rod mounted in the supporting base between the micro switches and adapted to trigger the micro switches alternatively during operation of the driving mechanism for enabling the driving mechanism to be alternatively controlled by the micro switches to rotate the camera platform assembly forwards and backwards.