Resources Contact Us Home
Double polarized light beam spectrophotometer of light source modulation type

Image Number 5 for United States Patent #4645341.

A double polarized light beam spectrophotometer of a light-source modulation type. A modulated light beam emitted by a light source is conducted through specimen atom vapor generated by a graphite atomizer. Wavelength of light undergone atom absorption is selected and spatially separated into a pair of linearly polarized light beams perpendicular to each other. The pair of the linearly polarized light beams separated are alternately passed through a chopper and received by a photoelectric conversion device to be converted into electric signals which are utilized for determining atomic absorption of the specimen. The phase of modulation of light radiated from the light source is synchronized with phase of a current supplied to the graphite atomizer for heating thereof and the switching timing of the chopper.

  Recently Added Patents
Method and system for efficient DRX operation during handover in LTE
Method for fabricating a nitrided silicon-oxide gate dielectric
Identifying media content in queries
Plants and seeds of corn variety CV294874
Receiving security risk feedback from linked contacts due to a user's system actions and behaviors
Light-source control device, light-source control method, image reading device, and image forming apparatus
  Randomly Featured Patents
Connector assembly, in particular for use in an electrically adjustable shock absorber
Vacuum assisted lancing system with bidirectional mechanism and method for blood extraction with minimal pain
Method for testing integrity of concrete shafts
Numbering guessing game structure
2,3-dihydro-2-(4,5-dihydroimidazol-2-yl)-indoles in composition form for reducing intraocular pressure
Movable structure for a display
Device and method for cutting semiconductor-crystal bars
Recording method, ink cartridge, printing device and information recording apparatus
Method of manufacturing an airbag assembly and vehicle trim component
Electron microscope with integrated detector(s)