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:
May. 10, 1983
Filed:
Dec. 17, 1980
Applicant:
Inventor:
Gerard R Lemaitre, Aix-en-Provence, FR;
Assignee:
A.N.V.A.R., Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; B29D / ; C03B / ;
U.S. Cl.
CPC ...
350295 ; 350320 ; 350310 ; 65102 ; 65107 ; 264-27 ; 264-19 ;
Abstract
The invention relates to astronomical mirrors or aspherical gratings which are obtained from a blank which is composed, in one piece, of a thin disc having a reflecting surface and of a cylindrical ring coaxial with the disc which is connected thereto by a semi-fixing. The ring is applied on a rigid support with which it defines a cavity in which a pressure pi is applied while the reflecting face is surfaced along a plane or spherical surface. The pressure pi is then varied, this causing a flexion of the disc.