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. 05, 2021
Filed:
Dec. 07, 2017
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Tsutomu Ishida, Suntou-gun, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 29/24 (2006.01); G01N 29/11 (2006.01); G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
G03G 15/5029 (2013.01); G01N 29/11 (2013.01); G01N 29/2462 (2013.01); G01N 29/2468 (2013.01); G01N 2291/0237 (2013.01); G01N 2291/044 (2013.01); G01N 2291/048 (2013.01); G03G 2215/00324 (2013.01); G03G 2215/00611 (2013.01);
Abstract
A protection member is arranged such that the distance from an opening plane of a reception guide to the center of the protection member is half of the distance from the opening plane of the reception guide to the surface of a reception vibration member. In other words, the arrangement position of the protection member is in the center between the opening plane of the reception guide and the surface of the reception vibration member. Accordingly, even if a protection member is arranged, a transmission coefficient is obtained that is equal to a transmission coefficient in the case where no protection member is present.