Abstract: The hinge (13) should preferably be formed to have a higher resistance than ever against the pivoting of the mirror body (12) to effectively prevent the hinge (13) from being damaged. By adopting a suitable one of a variety of production steps as necessary, the hinge (13) can be formed more finely and with a higher precision and thus the micro mirror unit can be produced more easily in a shorter time. To this end, the hinge (13) is formed from a different material, such as SiNx, from the mirror substrate material from which the frame (11) and mirror body (12) are formed.

Abstract: Disclosed is an apparatus for producing an original plate for optical discs, which is allowed to produce original plates for a plurality of kinds of optical discs satisfying various standards. The apparatus includes a laser light generator for generating laser light; a diaphragm mechanism for limiting laser light generated by the laser light generator; and an objective lens for refracting the laser light limited by the diaphragm mechanism in such a manner that the laser light is focussed on a photosensitive layer or a surface layer formed on the original plate; wherein a spot diameter of a beam of the laser light is changed by varying a diaphragm diameter of the diaphragm mechanism.

Abstract: An industrial robot has a servo system allowing higher-speed robot operation than in conventional robots. The servo system includes a movable arm or arms pivotable about a pivot axis or axes and/or movable along an axis or axes. The servo system includes at least one movable arm pivotal about a vertical axis and associated with a servo motor for angular displacement within a substantially horizontal plane. A servo motor for driving the horizontally pivotable movable arm is mounted on a base frame of the robot. By mounting the servo motor on the base frame, the load on the movable arm can be reduced significantly so as to allow the movable arm to be operated at higher speeds. The servo system includes a controller adapted to control robot operation.

Abstract: A high-speed image recognition system operates in response to a binary digitized picture image signal. The system comprises a first memory for storing a bi-level reference image pattern therein, a selector coupled to the first memory for manually designating a plurality of selected points of the bi-level reference image pattern, a detector coupled to the selector for detecting signal levels at each of the points selected by the selector, a second memory coupled to the detector for storing therein detected signal levels obtained from the detector, and a comparator coupled to the second memory for comparing the detected signal levels at the selected points of the bi-level reference image pattern with signal levels at the same points of a candidate image pattern, whereby an object corresponding to the candidate image pattern is recognized.