Optical device with a steerable light path

Details Optical device with a steerable light path Optical device with a steerable light path

2004-05-10

2010-10-12

Liu, Li (Department: 2613)

Optical communications

Optical communication over freee space

Transceivers

C398S118000, C398S129000, C398S130000, C398S131000, C244S003100, C244S003130, C244S003170, C359S831000

Reexamination Certificate

active

07813644

ABSTRACT:
A steerable-light-path optical device includes a light transceiver having an external light path associated therewith, and a path-steering device that controls the direction of the light path relative to a steering axis. The path-steering device has a first beam-deviation optical element including a first prism structure having a first diffraction grating thereon, and a second beam-deviation optical element including a second prism structure having a second diffraction grating thereon. The steering axis passes through the first and second beam-deviation optical elements. A rotational drive is operable to rotate at least one of the first beam-deviation optical element and the second beam-deviation optical element, and preferably both of the beam-deviation optical elements, about the steering axis.

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