Abstract: An exemplary embodiment of a telephone with handsfree function includes a telephone set and a handset. Two metal pieces are fixed in the handset, and two electromagnetic valves are fixed in the telephone set. A processing circuit in the telephone set powers on the electromagnetic valves when the handsfree function of the telephone is enabled to generate an electromagnetic field. The electromagnetic valves magnetically attract the metal pieces, such that the handset is firmly held on the telephone set.

Abstract: A camera positioning system includes a securing bracket fixed near a screen portion of a display screen, a belt, a shaft member rotatably connected to the securing bracket, and a spring member elastically connected between the shaft member and the securing bracket to provide an elastic force to make the shaft member automatically rotate. The belt is wound around the shaft member with an inner end fixed to the shaft member and an outer end extending out from the securing bracket to pass through the screen portion. A camera is removable secured to the belt.

Abstract: An exemplary embodiment of a telephone with handsfree function includes a telephone set and a handset. Two metal pieces are fixed in the handset, and two electromagnetic valves are fixed in the telephone set. A processing circuit in the telephone set powers on the electromagnetic valves when the handsfree function of the telephone is enabled to generate an electromagnetic field. The electromagnetic valves magnetically attract the metal pieces, such that the handset is firmly held on the telephone set.

Abstract: A camera positioning system includes a securing bracket fixed near a screen portion of a display screen, a belt, a shaft member rotatably connected to the securing bracket, and a spring member elastically connected between the shaft member and the securing bracket to provide an elastic force to make the shaft member automatically rotate. The belt is wound around the shaft member with an inner end fixed to the shaft member and an outer end extending out from the securing bracket to pass through the screen portion. A camera is removable secured to the belt.

Abstract: A mounting bracket for fixing an electronic device on television set includes a holding portion and a mounting portion. The holding portion includes a holding frame, a rotating frame and a connecting hinge. The mounting portion includes an adjusting strap, a plurality of hook portions, a pair of adjustable buckles, a pair of latch portions, a pair of latching hooks and a pair of adjustable screws. The latching hook can be fixed on the latch portion by inserting the adjusting screw through the round hole and the adjusting slot. The mounting bracket can be mounted on different positions by adjusting a relative position between the holding frame and the rotating frame or by securing the adjusting strap on different position of the buckling portion and by mating the hook portion with the tri-lobed hole.

Abstract: A mounting bracket for fixing an electronic device on television set includes a holding portion and a mounting portion. The holding portion includes a holding frame, a rotating frame and a connecting hinge. The mounting portion includes an adjusting strap, a plurality of hook portions, a pair of adjustable buckles, a pair of latch portions, a pair of latching hooks and a pair of adjustable screws. The latching hook can be fixed on the latch portion by inserting the adjusting screw through the round hole and the adjusting slot. The mounting bracket can be mounted on different positions by adjusting a relative position between the holding frame and the rotating frame or by securing the adjusting strap on different position of the buckling portion and by mating the hook portion with the tri-lobed hole.

Abstract: A novel thin infrared lens comprising an infrared lens and a hard and thin substrate that allows infrared lights to penetrate, is disclosed. The infrared lens may be a Fresnel refraction lens, prepared as a thin film by injection or casting. The infrared lens is attached to the thin substrate to form a lens assembly. The infrared lens may be pressed or adhered to the thin substrate or enveloped by the thin substrate to form the assembly.