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:
Feb. 09, 2021
Filed:
Aug. 02, 2019
Magic Leap, Inc., Plantation, FL (US);
Marshall Charles Capps, Fort Lauderdale, FL (US);
Magic Leap, Inc., Plantation, FL (US);
Abstract
Techniques are disclosed for calibrating display devices, such as head-mounted augmented reality (AR) devices. One technique includes obtaining, for each of a set of primary color light sources disposed in a unit, measurement points including chromaticity and luminance values as a function of temperature of the unit and drive currents of the primary color light sources. The technique further includes converting the measurement points to an XYZ color space to produce XYZ values. The technique further includes, for each of a set of target luminances and a set of discrete temperatures, calculating primary luminances for each of the primary color light sources, and interpolating or extrapolating the drive currents and the XYZ values for each of the primary luminances to obtain calculated currents. The technique further includes storing the calculated currents indexed by the target luminances and the discrete temperatures.