Optical retro-reflective apparatus with modulation capability

Details Optical retro-reflective apparatus with modulation capability Optical retro-reflective apparatus with modulation capability

2003-09-11

2010-06-01

Mack, Ricky L (Department: 2873)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S211500, C359S211600, C359S209100, C359S223100

Reexamination Certificate

active

07729030

ABSTRACT:
An optical MEMS retro-reflective apparatus with modulation capability having a retro-reflecting structure including a pair of reflective surfaces; and a MEMS device for moving at least one of the reflective surfaces of said pair of reflective surfaces relative to another one of the reflective surfaces of said pair of reflective surfaces a distance which causes the pair of reflective surfaces to switch between a reflective mode of operation and a transmissive mode of operation. A substrate and a moveable grating structure may be substituted for the reflective surfaces.

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Biermann, M.L., et al., “Design and Analysis of a Diffraction—Limited Cat's— Eye Retroreflector,”Opt. Eng., vol. 41, No. 7, pp. 1655-1660 (Jul. 2002).
U.S. Appl. No. 10/690,486, filed Oct. 20, 2003, Sayyah et al.

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