International Business Machines Corporation

Other

Duane E Grant

Kent A Byerly

Randall A Maddox

James R Walker

Lawrence Viele

Marvin E Feldhacker

In a Laser Bevel Meter for measuring the angle of a bevel on a ski edge a laser beam reflects from a mirror mounted on a magnet. The mirror-magnet assembly is coupled to the ski edge and the reflected beam is coupled through a mirror tunnel to a calibrated diffuse readout screen. And according to the invention an accurate, quickly obtained measurement of the bevel angle is obtained along the length of the ski.

Laser bevel meter

A compact optical scanner includes a base unit and a scan unit. The base unit includes an optical source such as a laser and an optical path directing a beam emitted by the laser to a scan mirror which is located in and supported by the scan unit. As the scan mirror rotates, the optical beam is reflected back to the base unit from which it is emitted as a beam scanning to and fro in a scan plane. The scan unit is supported by reference to the base unit such that the oscillation axis of the scan mirror is substantially and preferably parallel to the scan plane.

Compact optical scanner driven by a resonant galvanometer

A pel timing clock compensates for the non-linear displacement profile of a resonant galvanometerscanner. A pel time counter is loaded with a count value and outputs a clock pulse after expiration of a delay serial determined by the count value. Each time the clock pulse is produced the pel time counter is reloaded. The various count values are accessed from a memory which is addressed by an address counter whose contents are also altered each time the clock pulse is produced. The memory stores a sequence of count values which, when used to load the pel time counter, produces the desired sequence of clock pulses to compensate for the non-linear displacement profile of the scanner.

Digital timing control system with memory look ahead

Mirror multiplexor for linear image sensors

Erase apparatus for use in an electrophotographic copier machine where an array of light-emitting diodes (LEDs) is placed adjacent a plano-convex-cylindrical entrance end of an optical element such that light rays from the LED array are directed through the optical element to its exit end. At the convex-cylindrical exit end, the light rays are directed to the photoconductive surface of the machine. The optical element directs the more intense light rays emitted from the LEDs near the central axis to the edges of the erasure footprint while the less intense rays emitted from the LEDs at larger angles from the central axis are redistributed to the central portion of the erasure footprint.

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Boulder, CO, United States of America

Duane E Grant