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. 14, 2021
Filed:
Jan. 31, 2018
Koninklijke Philips N.v., Eindhoven, NL;
Paul Van Der Sluis, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
An optical particle sensor comprises at least first and second light sources of different wavelength for sequential operation. An optical detector is used to detect light from the light sources emitted or scattered by particles to be sensed. A current injection compensation signal is also provided which is dependent on which light source of the optical arrangement is in use. The compensation signal means the amplifier does not need to re-settle in response to different background illumination levels associated with the different light sources. In this way, detection signals may be obtained in quick succession from different light sources.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile