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:
Nov. 19, 2013
Filed:
Jan. 29, 2010
Hiroyoshi Funato, Kanagawa, JP;
Shigeaki Imai, Kanagawa, JP;
Koji Masuda, Kanagawa, JP;
Hidemasa Suzuki, Kanagawa, JP;
Hiroyoshi Funato, Kanagawa, JP;
Shigeaki Imai, Kanagawa, JP;
Koji Masuda, Kanagawa, JP;
Hidemasa Suzuki, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A velocity detecting device includes an image-pattern acquiring unit that includes a laser light source and an area sensor that acquires a one-dimensional or a two-dimensional image. The image-pattern acquiring unit includes a lens between a moving member and the area sensor, irradiates a beam emitted from the laser light source to the moving member to make a scattering light of the moving member scattered from the moving member on the area sensor by using the lens, and acquires an image pattern at a predetermined time interval in association with movement of the moving member. A velocity calculating unit calculates the velocity of the moving member by computing the image pattern acquired by the image-pattern acquiring unit. The lens is a reduced optical system that projects a reduced object onto the area sensor.