Grism

Details Grism Grism

2005-08-09

2005-08-09

Chang, Audrey Y. (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C359S565000, C359S831000, C356S305000

Reexamination Certificate

active

06927914

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.

REFERENCES:
patent: 5166831 (1992-11-01), Hart
patent: 5311367 (1994-05-01), Ohki et al.
patent: 5541776 (1996-07-01), Kobayashi et al.
patent: 5629764 (1997-05-01), Bahuguna et al.
patent: 6219110 (2001-04-01), Ishikawa et al.
patent: 2002/0008921 (2002-01-01), Ebizuka et al.
patent: 2002/0176124 (2002-11-01), Wise et al.
patent: 0 602 992 (1994-06-01), None
patent: WO 93/21548 (1993-10-01), None
Aikio, “Hyperspectral prism-grating-prism imaging spectrograph,” VTT Publications 435, Finland, Jun. 16, 2001.
Traub, “Constant-dispersion grism spectrometer for channeled spectra,” Journal of the Optical Society of America, vol. 7, No. 9, Sep. 1, 1990, pp. 1779-1791.

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