Optical transmission apparatus with directionality and...

Details Optical transmission apparatus with directionality and... Optical transmission apparatus with directionality and...

2006-06-06

2006-06-06

Dang, Hung xuan (Department: 2873)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C359S244000, C359S245000, C359S738000

Reexamination Certificate

active

07057151

ABSTRACT:
An apparatus for emitting light with a controlled directionality and optical divergence from at least one opening includes a light impervious surface structure having the at least one opening, a periodic or quasi-periodic surface topography including one or several surface feature(s) and associated with the at least one opening on the surface structure, whereby light emerging from the opening(s) interacts with surface waves on the surface structure (20) thereby providing controlled directionality and optical divergence of the emitted light.

REFERENCES:
patent: 6649901 (2003-11-01), Thio et al.
patent: 6834027 (2004-12-01), Sakaguchi et al.
T. Thio, H.J. Lezec, T.W. Ebbesen:, “Strongly enhanced optical transmission through subwavelength holes in metal films”, PHYSICA B, vol. 279, 2000, pp. 90-93, XP002236331, abstract, p. 91, paragraph 2 -p. 92, paragraph 3; figure 2.
Ghaemi H F et al:, Surface plasmons enhance optical transmission thrugh subwavelength holes:, Physical Review, B. Condensed Matter, American Institute of Physics. New York, US. vol. 58, No. 11, Sep. 15, 1998, pp. 6779-6782, XP002133008, ISSN: 0163-1829 cited in the application p. 6780.

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