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US 4,697,924 AGranted
Monochromator
AssigneeShimadzu Corporation
InventorOsamu Akiyama
Life of this patent
Estimating the term…
Abstract
A monochromator, capable of functioning as either a single monochromator or a double monochromator by positioning of either reflective means or dispersion means in the optical path. Both the reflective means and the dispersion means are placed on a rotary bed which may be rotated by rotary drive means so that one of the above-mentioned optical means may be placed in the optical path, whereby the monochromator functions optimally, depending on the object to be measured.
Claims8
A monochromator defining an optical path therethrough, said monochromator comprising:
- an entrance grid, having an entrance slit and being positioned such that said entrance slit is at the beginning of said optical path;
- a first spectroscope, positioned on said optical path after said entrance grid, said first spectroscope comprising at least a first reflective element for reflecting light along said optical path and a first dispersion element for diffracting light along said optical path, said first reflective element and said first dispersion element being disposed on a first rotary bed rotatable about a first axis, one of said first reflective element and said first dispersion element being alternatively selectable by rotating said rotary bed;
- an intermediate grid, having an intermediate slit and being positioned after said first spectroscope along said optical path, said first spectroscope directing light from said entrance slit to said intermediate slit;
- a second spectroscope positioned on said optical path after said intermediate grid, said second spectroscope comprising at least a second dispersion element for diffracting light along said optical path, said second dispersion element being disposed on a second rotary bed rotatable about a second axis;
- and
- an exit grid, having an exit slit and being positioned on said optical path after said second spectroscope, said second spectroscope directing light from said intermediate slit to said exit slit.
3 more elements
Dependencies are inferred from the claim text.