97results about How to "Eliminate tilt" patented technology

An optical pickup device includes a lens, a base plate, a supporting wall substantially perpendicular extending from the base plate, at least one cantilever beam, and at least one piezoelectric member. The lens is configured for converging a light beam onto an optical disc. The cantilever beam includes a fixing end and a free end. The fixing end is fixed in / attached to the supporting wall, and the free end suspends the lens thereat. The piezoelectric member is sandwiched between the free end and the base plate. The piezoelectric member is electrically polarizable along a polarization pivot thereof, and thus the length thereof along the pivot direction may be adjusted electrically. The polarization pivot is substantially perpendicular to the base plate and the cantilever beam.

The object of the present invention is to provide a lens driving unit which can achieve downsizing, improved resistance to impact, stabilized lens attitude, and reduced power consumption when an auto-focus function is performed. The lens driving unit includes a lens holder accommodating a lens or a group of lenses; a coil disposed on a surface of the lens holder; a magnet disposed at a position spaced from the coil by a predetermined distance; and a magnet yoke installed on the back face of the said magnet. The lens driving unit is characted in that the lens driving unit can move along the optical axis by a guide member, and one or more magnetic member is disposed at the lens holder to fix a position of the lens holder.

The invention discloses a trolley lifting mechanism used for carrying surgical tools. The trolley lifting mechanism comprises a connecting rod lifting mechanism, an upper flat plate, a guide rod and an electric pushing rod, wherein the connecting rod lifting mechanism comprises four hinged parts, a left force transmission beam and a right force transmission beam; each hinged part comprises an upper hinge support base, a lower hinge support base and a hinge, wherein the hinge is arranged between the upper hinge support base and the lower hinge support base; the connecting rod lifting mechanismis fixedly arranged on the supporting plane through four lower hinge support bases, and is fixedly arranged on the upper flat plate through four upper hinge support bases; and the two ends of the electric pushing rod are separately arranged on the left force transmission beam and the right force transmission beam in a sleeving mode, and can freely move along the axial directions of the force transmission arms. The trolley lifting mechanism disclosed by the invention is compact in structure, realizes multi-point jacking and is good in stability; the electric pushing rod can horizontally move along the axis of the left force transmission arm and the axis of the right force transmission arm to reduce eccentric load amount at the two sides, so that mechanism lifting is more stable, a medical trolley can be stressed uniformly and reasonably ascended and descended, and requirements in aspect of spatial size of the medical trolley are met.

A relay set (4, 4′) for the optical system of a rigid endoscope, the optical system including an objective (1) at the distal end, an ocular (5) at the proximal end and between them a relay lens system consisting of several relay sets (2, 3, 4), the relay set (4, 4′) consisting of two half sets (4.1, 4.2) having the same lens units (11.1, 12.1, 13.1; 11.2, 12.2 13.2) arranged symmetrically with respect to the center (10) of the set (4, 4′), each half set (4.1, 4.2) consisting of two positive power lens units (11.1, 13.1; 11.2, 13.2) at the ends and one negative power lens unit (12.1; 12.2) in the middle, is characterized in that each half set is of Triplet design.

A 3D non-volatile memory device includes a pipe gate, at least one first channel layer including a first pipe channel layer formed in the pipe gate and a pair of first source side channel layer and first drain side channel layer connected to the first pipe channel layer, and at least one second channel layer including a second pipe channel layer formed in the pipe gate and positioned over the first pipe channel layer and a pair of second source side channel layer and second drain side channel layer connected to the second pipe channel layer.