Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2006-04-10
2008-11-11
Cherry, Euncha P (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
Reexamination Certificate
active
07450283
ABSTRACT:
A multi-beam light source unit is disclosed that has high layout degree of freedom and low manufacturing cost. The multi-beam light source unit includes two or more light sources, two or more first optical systems that shape light beams from the light sources, and a light beam combining element with a periodic structure of a period shorter than wavelengths of the light beams. The light beams are incident on the light beam combining element from different directions, and the light beam combining element transmits at least portions of the light beams nearly in the same direction.
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Hisao Kukuta, et al., “Optical Control According to Lattice Structure Finer than Wavelength”, Optics, vol. 27, No. 1, 1998, pp. 12-17 (with English translation).
Cherry Euncha P
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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