Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
April 16, 2019
Patent Application Number
15610013
Date Filed
May 31, 2017
Patent Citations Received
Patent Primary Examiner
Patent abstract
An apparatus includes an illumination source configured to emit light when driven with a current greater than a threshold current and driver circuitry configured to drive the illumination source with a controllable current. The driver circuit controlled by at least a first input value. At least one illumination detector is configured to detect light emitted by the illumination source and monitor circuitry is configured to receive an output from the illumination detector and provide the first input value.
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