Abstract: A multispectral sensing device includes a first die, including silicon, which is patterned to define a first array of sensor elements, which output first electrical signals in response to optical radiation that is incident on the device in a band of wavelengths less than 1000 nm that is incident on the front side of the first die. A second die has its first side bonded to the back side of the first die and includes a photosensitive material and is patterned to define a second array of sensor elements, which output second electrical signals in response to the optical radiation that is incident on the device in a second band of wavelengths greater than 1000 nm that passes through the first die and is incident on the first side of the second die. Readout circuitry reads the first electrical signals and the second electrical signals serially out of the device.

Abstract: A device is designed to exercise foot muscle and is formed of a base on which two rotary mounts are disposed. The rotary mounts are provided with two upright fastening plates, each having a fastening hole. Two footrests are provided in the underside with two pivoting plates, each having a pivoting hole. The footrests are pivotally fastened to the rotary mounts such that the pivoting plates and the fastening plates are pivoted together by two pivots which are disposed in the pivoting hole and the fastening hole. The footrests turn horizontally along with the rotary mounts and turn up and down on the pivots.

Abstract: A portable exercise device includes a U-shaped frame having two free ends opposite in location to each other. The two free ends are provided with a plurality of orientation rollers pivoted thereto, and a swivel arm pivoted thereto. The swivel arms of the two free ends are connected by an elastic belt and are provided with a plurality of pressure rollers pivoted thereto. As the U-shaped frame is moved in all directions by an exerciser, the orientation rollers and the pressure rollers roll over the waist and the belly of the exerciser.

Abstract: A portable exercise device comprises a U-shaped frame having two free ends opposite in location to each other. The two free ends are provided with a plurality of orientation rollers pivoted thereto, and a swivel arm pivoted thereto. The swivel arms of the two free ends are connected by an elastic belt and are provided with a plurality of pressure rollers pivoted thereto. As the U-shaped frame is moved in all directions by an exerciser, the orientation rollers and the pressure rollers roll over the waist and the belly of the exerciser.