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 apparatus for prioritizing data transfer
Emergency call notification for network services
Processing biomass
Robot control device
Bezel-less electronic display
Memory with separate read and write paths
Wrench head
  Randomly Featured Patents
Aluminum trihydrate crystals and improved method for the production thereof
Method and computer program for the acquisition of capital equipment using web-based purchase pooling
Pipelined architecture implementing recursion processes for forward error correction
Liquid crystalline resin and molded product thereof
Handset mode selection based on user preferences
Semiconductor device having first and second resistance for suppressing loop oscillation
Data communication apparatus
Engine control apparatus
Child's safety seat for shopping cart
Image inputting apparatus, method, and storage medium recording image inputting program