Optical element, optical deflection element, optical...

Optical: systems and elements – Deflection using a moving element

Reexamination Certificate

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C359S321000, C385S039000

Reexamination Certificate

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06992806

ABSTRACT:
In an optical element, a propagation direction of incident light beam is largely changed and the direction-changed light beam is derived in a desirable direction without increasing a dimension and manufacturing cost thereof. The optical element includes photonic crystal having a refractive index which changes periodically depending on a location of the photonic crystal, wherein an angle defined between a first end face and a second end face thereof is determined in such a manner that a light beam incident upon the first end face at a predetermined incidence angle and having a predetermined wavelength is emitted from the second end face in a desirable direction.

REFERENCES:
patent: 6134369 (2000-10-01), Kurosawa
patent: 6381389 (2002-04-01), Kosaka
patent: 6448997 (2002-09-01), Koide
patent: 11-271541 (1999-10-01), None
patent: 2000-56146 (2000-02-01), None
patent: 2000-66002 (2000-03-01), None
patent: 2001-091701 (2001-04-01), None
Kosaka, et al., “Superpris phenomena in photonic crystals”, Oct. 15, 1999-II.

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