The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2005
Filed:
Jun. 10, 2003
Noboru Ebizuka, Wako, JP;
Kashiko Kodate, Nishitokyo, JP;
Keiko Oka, Tokyo, JP;
Masanori IE, Tokyo, JP;
Toshikazu Ebisuzaki, Wako, JP;
Noboru Ebizuka, Wako, JP;
Kashiko Kodate, Nishitokyo, JP;
Keiko Oka, Tokyo, JP;
Masanori Ie, Tokyo, JP;
Toshikazu Ebisuzaki, Wako, JP;
Riken, Saitama, JP;
Abstract
In order to achieve highly dispersive spectrometry in wide wavelength with the use of a single grism, but not a plurality of grisms, the grism is composed of a prism the vertex angle of which can be varied and a volume phase holographic (VPH) grating. More specifically, the grism comprises a prism the vertex angle of which can be varied; and a VPH grating being a diffraction grating and disposed substantially orthogonal with respect to a side including the vertex angle of the prism; the VPH grating being rotated around an axis being substantially orthogonal to the side of the prism, whereby a slope angle defined by the VPH grating and a predetermined plane is varied.