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:
Aug. 12, 2014
Filed:
Jun. 08, 2009
Takefumi Hayashi, Tokyo, JP;
Hitoshi Shimizu, Tokyo, JP;
Takefumi Hayashi, Tokyo, JP;
Hitoshi Shimizu, Tokyo, JP;
Kabushiki Kaisha Topcon, Tokyo, JP;
Abstract
An optical image measuring devicesplits low-coherence light Linto signal light LS and reference light LR, and splits an optical path of the reference light LR into two optical paths having different optical path lengths to split the reference light LR into two reference lights LRa, LRb. Furthermore, the optical image measuring devicemakes the reference lights LRa, LRb interfere with the signal light LS propagated through an eye E, generates an interference light LC reflecting a morphology in each of two depth positions (fundus oculi Ef and cornea Ec) of an eye E, and detects the interference light LC to generate a detection signal. Then, the optical image measuring deviceforms a fundus oculi tomographic image and a cornea tomographic image based on the detection signals, and analyzes the tomographic images to obtain a distance between the cornea and retina of the eye E.