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:
Jan. 02, 1979
Filed:
Dec. 07, 1977
Applicant:
Inventors:
Georges Dubroeucq, Paris, FR;
Michael Lacombat, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 71 ; 3501 / ;
Abstract
The invention relates to optical systems intended for the transfer of patterns onto a photosensitive surface. The system according to the invention comprises a source of coherent radiation which is intended to illuminate the photosensitive surface for a predetermined duration and which is associated with transmission means introducing a wavefront modulation of the radiation intended to average during the exposure time, the interference fringes produced by the coherence of the radiation.