Abstract: A surveillance apparatus, comprising: a holder; a first adjusting member disposed on the holder, the first adjusting member comprising a first annular plate and two extending portions each defining a second through hole; a second adjusting member comprising a second annular plate and a third annular plate; an image pick-up device sleeved on the third annular plate; a third adjusting member comprising a fourth annular plate, a pair of handles, and two fasteners, the handles each defining a fifth through hole corresponding to the second through holes, the fourth annular plate rotatably sleeves on the third annular plate; the first adjusting member and the third adjusting member is assembled together.

Abstract: A pressure sensor is provided, wherein a ballast resistive layer is integrated in the pressure sensor so that the resistive output curve for the pressure sensor has saturation characteristics. The pressure sensor shall be prevented from breaking down by a large current that may be caused, when an overload pressure is applied on the pressure sensor, if no ballast resistive layer is added.

Abstract: A micro-deformable piezoresistive material is provided, including a hard plastic body, a micro-deformable rough texture surface, and a plurality of conductive particles. The micro-deformable rough texture surface is formed on a side of the hard plastic body, wherein the maximum deformation of the rough texture surface is far less than the thickness of the hard plastic body. Additionally, the conductive particles are evenly dispersed in the plastic body.

Abstract: A digital camera has a housing and an exposure circuit in the housing. The digital camera further includes a locating post fixed on the housing, a rotatable assembly, and a shutter button electronically connected to the exposure circuit. The rotatable assembly has a hole for passage of the locating post and can rotate round the locating post. The shutter button is disposed on a side of the rotatable assembly. The rotatable assembly may help users to select one of the left side and the right side of the digital camera as desired for left-handed or right-handed operation of the digital camera.

Abstract: The present invention provides a light-emitting diode made of a polymer nanocomposite doped with quantum dots to improve luminescence efficiency and to increase stability and electrical characteristics.

Abstract: A media fixing device includes a stationary plate, a bar linking member, a main pressure plate, an elastic member, an auxiliary plate and a pivot rod. The bar linking member is configured for movably connecting the main pressure plate. The elastic member is configured for movably connecting the main pressure plate to the stationary plate. The pivot rod is configured for pivoting the auxiliary plate on the main pressure plate.

Abstract: A digital camera has a housing and an exposure circuit in the housing. The digital camera further includes a locating post fixed on the housing, a rotatable assembly, and a shutter button electronically connected to the exposure circuit. The rotatable assembly has a hole for passage of the locating post and can rotate round the locating post. The shutter button is disposed on a side of the rotatable assembly. The rotatable assembly may help users to select one of the left side and the right side of the digital camera as desired for left-handed or right-handed operation of the digital camera.

Abstract: One type of electroluminescence polymer that include at least one side-chain-tethered polyhedral oligomeric silsesquioxane that will form self-assembled structure and may build a free volume among the polymers to prevent the polymers from stacking and enhance luminescence efficiency and thermal stability.

Abstract: The present invention provides a light-emitting diode made of a polymer nanocomposite doped with quantum dots to improve luminescence efficiency and to increase stability and electrical characteristics.