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:
Mar. 29, 2022
Filed:
Dec. 08, 2020
Magic Leap, Inc., Plantation, FL (US);
Marshall Charles Capps, Austin, TX (US);
Magic Leap, Inc., Plantation, FL (US);
Abstract
Techniques are disclosed for calibrating display devices, such as head-mounted augmented reality (AR) devices. For each of a set of primary color light sources disposed in a unit, measurement points are obtained including chromaticity and luminance values as a function of temperature of the unit and drive currents of the primary color light sources. The measurement points are converted to an XYZ color space to produce XYZ values. For each of a set of target luminances and a set of discrete temperatures, primary luminances are calculated for each of the set of primary color light sources, and the drive currents and the XYZ values are interpolated or extrapolated for each of the primary luminances to obtain calculated currents.