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:
Sep. 05, 2000
Filed:
Oct. 08, 1999
Applicant:
Inventors:
Masaki Tomita, Kawasaki, JP;
Motohiro Osaki, Kawasaki, JP;
Kuniaki Obata, Kawasaki, JP;
Masaaki Miyashita, Kawasaki, JP;
Assignee:
Mitutoyo Corporation, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; G01B / ;
U.S. Cl.
CPC ...
359 15 ; 359572 ; 2502 / ; 356356 ;
Abstract
A holographic grating 12 is formed on one surface of a scale substrate 11 in such a manner that a light source is disposed over the other surface of the scale substrate 11. The scale substrate 11 is formed of a transparent material. A reflection film 13 is directly deposited on the grating surface. A protection substrate 15 is adhered to the reflection film 13 on the scale substrate 11 with adhesive agent 14. Thus, a reflection-type hologram scale 1 is accomplished.