Abstract: A method for controlling electrical power of light emission diodes (LED) is provided. The above method comprises steps of providing a supply voltage to the LED driver; providing a driving current to the LED by the LED driver; obtaining an operating voltage of the LED; and adjusting the supply voltage according to the operating voltage of the LED.
Abstract: A projector with a color sensor module is provided. The projector includes a light source providing a light, a prism device refracting the light, a reflecting device reflecting the light refracted by the prism device, an optical lens receiving the light reflected by the reflecting device and forming a first light path between the optical lens and the reflecting device, and a color sensor module disposed on a second light path and comprising a light inlet receiving the light reflected toward the second light path by the reflecting device.
Abstract: A projector with a color sensor module is provided. The projector includes a light source providing a light, a prism device refracting the light, a reflecting device reflecting the light refracted by the prism device, an optical lens receiving the light reflected by the reflecting device and forming a first light path between the optical lens and the reflecting device, and a color sensor module disposed on a second light path and comprising a light inlet receiving the light reflected toward the second light path by the reflecting device.
Abstract: A lens assembly for obtaining an image of an object is provided. The lens assembly includes a lens device receiving a reflected light from the object, a circuit board carrying thereon the lens device, a spacer mounted on the circuit board, and a sensor mounted on the spacer, receiving the reflected light from the lens device and converting the reflected light into a digital signal, thereby generating the image.
Abstract: A digital presenter has a base, an image acquiring device with an automatic focusing function, and a flexible support device connected between the base and the image acquiring device.
Abstract: A digital data presenting apparatus having a lighting system and a camera system is provided. The lighting system is used to emitting a light and further includes a lens assembly for controlling the light to the projection area of an object. The camera system further includes an image-sensing component, a camera lens positioned on one side of the image-sensing component and a first deflector adjusting a propagation direction of the light reflected from the object to be displayed to the image-sensing component through the camera lens.
Abstract: A lens assembly for obtaining an image of an object is provided. The lens assembly includes a lens device receiving a reflected light from the object, a circuit board carrying thereon the lens device, a spacer mounted on the circuit board, and a sensor mounted on the spacer, receiving the reflected light from the lens device and converting the reflected light into a digital signal, thereby generating the image.
Abstract: A visual presentation apparatus with an improved illuminating system is provided. The visual presentation apparatus includes a base, and the base includes a camera system and the illuminating system. The illuminating system includes a light-emitting element for providing a light source of the illuminating system, a tunneling element for collecting a light emitted from the light-emitting element, and a lens for controlling a focus and a projecting area of the light. The light passes through the tunneling element is in an even distribution.