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5995221 |
Modified concentric spectrograph
A modified concentric spectrograph for diffracting light with high stray light rejection without astigmatism is provided. The modified spectrograph includes a grating, a lens, and at least one...
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4921350 |
Monochromator second order subtraction method
In an optical system for measuring sample absorption of light at a primary wavelength output from a monochromator, a method of subtracting the effect of secondary wavelength components of light...
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4919537 |
UV scanning system for centrifuge
A centrifuge sample is optically scanned during centrifuging. The sample, placed in a centrifuge rotor having a cell with top and bottom windows, is spun until stratification and discrete layering...
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4830493 |
UV scanning system for centrifuge
A centrifuge sample is optically scanned during centrifuging. The sample, placed in a centrifuge rotor having a cell with top and bottom windows, is spun until stratification and discrete layering...
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4453826 |
Double monochromator
A pre-monochromator having a grating monochromator includes an unsymmetrically ruled concave diffraction grating, by means of which a light source is directly imaged upon an exit slit. The...
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4387955 |
Holographic reflective grating multiplexer/demultiplexer
A multiplexer/demultiplexer having a holographically formed reflective grating incorporated therein. In operation as a demultiplexer a single signal having a plurality of wavelengths impinges upon...
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