Optics: measuring and testing – By light interference – Spectroscopy
Reexamination Certificate
2011-03-29
2011-03-29
Toatley, Gregory J (Department: 2877)
Optics: measuring and testing
By light interference
Spectroscopy
C359S894000
Reexamination Certificate
active
07916300
ABSTRACT:
A spectroscopy device that separates input light into a plurality of wavelength ranges. A metal body has a hole or aperture which is open on the upper side. The hole or aperture is formed in a polygonal shape having at least a pair of opposite faces not parallel to each other in horizontal cross-section. Inner side faces of the hole or aperture are finished as mirror like reflection surfaces. Polarized input light inputted from the opening to the hole or aperture is reflected by the reflection surfaces and a standing wave is generated inside of the hole or aperture by self interference, whereby the input light is separated into a plurality of wavelength ranges.
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Extended European Search Report dated Oct. 8, 2010; in corresponding Application No. 08252640.1.
Paiam M. R. et al.: “Design of Phased—Array Wavelength Division Multiplexers Using Multimode Interference Couplers” Applied Optics, vol. 36, No. 21, Jul. 20, 1997, pp. 5097-5108, XP00069175, ISSN:0003-6935.
Ito Kazuyoshi
Iwata Mitsuru
Kobayashi Yoshitaka
Misawa Takeshi
Oda Kazuya
Birch & Stewart Kolasch & Birch, LLP
FUJIFILM Corporation
Richey Scott M
Toatley Gregory J
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