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
Methods and systems for dynamic spectrum arbitrage
Method of synchronization for low power idle
Binary-to-gray converting circuits and gray code counter including the same
Communication apparatus and communication system
Dynamic load profiling in a power network
Automated synchronization of design features in disparate code components using type differencing
Solid-state imaging device and electronic apparatus with antireflection structure
  Randomly Featured Patents
Wetsuit washing hanger device
Sensor breakout lead
System and method for ensuring presentation of embedded rich media across station boundaries
Transparent optical article and process for preparing same
Drain bias multiplexing for multiple bit flash cell
Telescoping support stand apparatus
Ballistic ranging methods and systems for inclined shooting
System and method for controlling welding parameters in welding-based deposition processes
Convertible surgical clip applier system