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US 4,968,143 AGranted
Portable spectrophotometer
AssigneeMaxmeyer-Duco MM.D. S.p.A.
InventorAllen Weston
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Abstract
A portable spectrophotometer is disclosed which is provided with a holding case accommodating opto-mechanical color-reading devices and an electronic control device provided with a microprocessor having data and program memories. The spectrophotometer further includes a power source which enables its self-sustained field use.
Claims2
A portable spectrophotometer comprising:
- a holding case including, all located inside said case:
- a light source connected, via a control circuit, to an output of a microprocessor having data and program storages;
- a sphere for making the luminous flux from the light source exiting said case more uniform;
- a spectroscope for spectrum-wise scattering of reflected light from a sample located adjacent to said sphere illuminated by said light source through said sphere to a photometric device connected to an input end of said microprocessor via an analog-to-digital converter;
- an optical device for illuminating said photometric device directly from said light source simultaneously with lighting of the sample being analyzed;
- a self-contained power supply to the light source, photometric device, control circuit, analog-to-digital converter, and microprocessor;
- and
- a connector for connecting the microprocessor and power supply to the outside of said case.
5 more elements
Dependencies are inferred from the claim text.