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
Packet transmission method, apparatus, and network system
Optimized delivery of web application code
Mobile camera localization using depth maps
Motor control system, motor control device, and brushless motor
Defected ground plane inductor
Link establishment in a wireless communication environment
  Randomly Featured Patents
Protective sheet peeling device and protective sheet peeling method
Tension cord burglar-alarm
Compositions for treating aluminum surfaces for tarnish resistance
Functional application of photochromic compound materials to products
Software servo control apparatus for use in an injection molding machine
Push button for powder aerosol
Chip-size package structure and method of the same
Method for folding plane surfaces
System for maintaining a minimum level of digitized data signal quality while allowing bandwidth dependent quality enhancement with additional enhancement data packets
Unaliased quadrature audio synthesizer