Hand Held Products, Inc.

Intermec IP Corporation

Bernard Puybras

Serge Thuries

Alain Gillet

Jean-Louis Massieu

Bernard Serres

Pierre-Marie Manine

An optical pattern projector used for projecting a structured-light pattern onto an object for dimensioning is presented. The optical pattern projector utilizes a laser array, a lenslet array, a lens, and a diffractive optical element to create a repeated pattern of projected dots. The pattern repetition is based on the grid pattern of laser array. Each laser's collimated beam, when projected through the lens, impinges on the diffractive optical element from a slightly different direction. The diffractive optical element creates a sub-patterns that continue propagating along these different directions and combine on a target to produce a repeating optical pattern.

Optical pattern projector

An optoelectronic device for acquiring images of planes, such as bar codes, includes a deflector for deflecting an incident beam emitted by a light source such as an oscillating or rotating cyclic polygonial deflector or mirror. A driver osscilates or rotates the deflector in such a way that the incident beam describes, during each cycle, angular scanning adapted to generate at least one elementary scanning line on the plane. A closed loop control circuit controls the driver and is connected, on the one hand, to the clock in order to receive the transfer signal &PHgr; and, on the other hand, to the driver and adapted to synchronize the beginning of each scanning cycle in phase and frequency with the signal &PHgr; emitted by the clock.

Optoelectronic device for acquiring images of planes, such as bar code symbols

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Saint Pierre de Lages, France

Bernard Puybras