Abstract: A single-panel projection system (1) includes a lighting device for generating collimated light, a beam splitter (30) for splitting the collimated light into a plurality of collimated beams, a color separator (40) for separating each collimated beam into a red, a green and a blue color beams, a color scrolling wheel (50) having a plurality of reflecting areas with different thicknesses and being rotated at a predetermined speed for scrolling the color beams, an imaging device (60) for imaging a picture by modulating the scrolled color beams according to image signals provided by an image, and a projecting lens (70) for magnifying the picture and projecting the magnified picture onto a screen.

Abstract: A knuckle arm interconnects a machine body and a top cover of a machine, and includes a base fixed on the machine body, and a pivot seat connected pivotally to the base and attached to the top cover. A biasing unit is disposed between the base and the pivot seat so as to bias the top cover to pivot upwardly. A friction assembly imparts a resistance to pivoting of the top cover so as to maintain the top cover at any position.

Abstract: A single-panel projection system (1) includes a lighting device for generating collimated light, a beam splitter (30) for splitting the collimated light into a plurality of collimated beams, a color separator (40) for separating each collimated beam into a red, a green and a blue color beams, a color scrolling wheel (50) having a plurality of reflecting areas with different thicknesses and being rotated at a predetermined speed for scrolling the color beams, an imaging device (60) for imaging a picture by modulating the scrolled color beams according to image signals provided by an image, and a projecting lens (70) for magnifying the picture and projecting the magnified picture onto a screen.

Abstract: A knuckle arm interconnects a machine body and a top cover of a machine, and includes a base fixed on the machine body, and a pivot seat connected pivotally to the base and attached to the top cover. A biasing unit is disposed between the base and the pivot seat so as to bias the top cover to pivot upwardly. A friction assembly imparts a resistance to pivoting of the top cover so as to maintain the top cover at any position.

Abstract: A knuckle arm interconnects a machine body and a top cover of a machine, and includes a base fixed on the machine body and having a receiving frame, an inner sliding seat slidable within the receiving frame and having a cam surface, a resilient member disposed between the receiving frame and the inner sliding seat, a first pivotable seat sleeved on the base, a pressing rod extending through the first pivotable seat and biased to contact the cam surface, and a second pivotable seat slidable on the first pivotable seat and attached to the top cover of the machine.

Abstract: A knuckle arm interconnects a machine body and a top cover of a machine, and includes a base fixed on the machine body and having a receiving frame, an inner sliding seat slidable within the receiving frame and having a cam surface, a resilient member disposed between the receiving frame and the inner sliding seat, a first pivotable seat sleeved on the base, a pressing rod extending through the first pivotable seat and biased to contact the cam surface, and a second pivotable seat slidable on the first pivotable seat and attached to the top cover of the machine.