The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 1980
Filed:
Jul. 25, 1978
Applicant:
Inventors:
Christian Mayeux, Paris, FR;
Francois Micheron, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01T / ;
U.S. Cl.
CPC ...
250336 ; 250370 ; 250393 ; 250394 ; 2504 / ;
Abstract
The detector comprises at least one plate of an electrooptical material having good photoconduction properties and high absorption of X- or .gamma.-rays, preferably materials comprising bismuth oxide. The plate is placed between two electrodes connected to an electric generator through a resistor. A polarized luminous beam passes through the plate. Under the action of the radiation, the conductivity of the plate varies and produces a modification of the polarization state of the luminous beam. This modification is analysed and then detected. In this way there is obtained an indication of the radiation dose received for a given period.