Microsoft patents AR display that adjusts laser brightness to stay consistent
Microsoft has been granted a patent for an augmented reality device that keeps its screen looking even as it heats up or cools down. The system uses a temperature sensor to monitor the laser light source and automatically adjusts the strength of a specific laser pulse for every pixel to maintain uniform color and brightness.
In the filing’s own words
Examples are disclosed that relate to an augmented-reality device including a near-eye display that is configured to provide display uniformity at varying operating temperatures. The near-eye display includes a laser light source that is configured to perform a display scan operation including, for each pixel of a plurality of pixels that collectively form a field of view of the near-eye display, generating a pre-color pulse and subsequently generating a primary color pulse. The augmented-reality device is configured to receive an operating temperature measurement of the laser light source from a temperature sensor. The augmented-reality device is further configured to, for each pixel of the plurality of pixels, dynamically tune an amplitude of the pre-color pulse based at least on the operating temperature measurement of the laser light source, and generate, via the laser light source, the pre-color pulse with the dynamically tuned amplitude, and subsequently generate the primary color pulse.
What exactly they claim (claim 1)
1. An augmented-reality device, comprising: a near-eye display including a laser light source configured to perform a display scan operation, wherein the display scan operation includes, for each pixel of a plurality of pixels that collectively form a field of view of the near-eye display, generating a pre-color pulse and subsequently generating a primary color pulse; a temperature sensor configured to output an operating temperature measurement of the laser light source; a logic subsystem; and a storage subsystem holding instructions executable by the logic subsystem to: receive the operating temperature measurement from the temperature sensor; and for each pixel of the plurality of pixels of the near-eye display, dynamically tune an amplitude of the pre-color pulse based at least on the operating temperature measurement of the laser light source; and generate, via the laser light source, the pre-color pulse with the dynamically tuned amplitude, and subsequently generate the primary color pulse.
Facts
- Company
- Microsoft (Microsoft Technology Licensing, LLC)
- Official title
- Temperature-based dynamic laser tuning to promote display uniformity
- Patent number
- US12731960B2
- Application number
- 18653870
- Filed
- May 2, 2024
- Granted
- Sep 8, 2026
- Inventors
- 1
- Claims
- 20
Classified under
H01S 5/06821 Electricity & electronicsG02B 27/0172 Physics & computingG09G 3/3413 Physics & computingH01S 5/0617 Electricity & electronicsH01S 5/4093 Electricity & electronicsG02B 2027/0118 Physics & computingMore from Microsoft in AR, VR & displays
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.