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:
Jul. 30, 2013
Filed:
May. 13, 2011
Jonas Alexander Pologe, Boulder, CO (US);
Theodore Philip Delianides, Boulder, CO (US);
Jonas Alexander Pologe, Boulder, CO (US);
Theodore Philip Delianides, Boulder, CO (US);
Kestrel Labs, Inc., Boulder, CO (US);
Abstract
An embodiment of a light launching portion of a photoplethysmographic device having a laser () light source and a light guide (). The coupled end of the light guide () includes an anti-reflection coating () to prevent or minimize the back reflection of light emitted by the laser (). This minimizes the extent to which back reflected light can re-enter the laser and adversely alter the optical output properties of the laser () and additionally minimizes the associated light loss thus helping to maximize the optical coupling efficiency. Other embodiments are described and shown.