US Patent Application 18218439. PROJECTION DEVICE AND PROJECTION METHOD FOR HEAD MOUNTED DISPLAY BASED ON ROTARY MEMS FAST SCANNER simplified abstract

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PROJECTION DEVICE AND PROJECTION METHOD FOR HEAD MOUNTED DISPLAY BASED ON ROTARY MEMS FAST SCANNER

Organization Name

MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor(s)

Tapani Matias Alasaarela of Espoo (FI)

Simo Kaarlo Tapani Tammela of Espoo (FI)

PROJECTION DEVICE AND PROJECTION METHOD FOR HEAD MOUNTED DISPLAY BASED ON ROTARY MEMS FAST SCANNER - A simplified explanation of the abstract

This abstract first appeared for US patent application 18218439 titled 'PROJECTION DEVICE AND PROJECTION METHOD FOR HEAD MOUNTED DISPLAY BASED ON ROTARY MEMS FAST SCANNER

Simplified Explanation

The patent application describes a projector system in a head mounted display (HMD) that uses a microscopic mirror and a microelectromechanical system (MEMS) to project images. Here are the key points:

  • The projector system includes a microscopic mirror and a MEMS.
  • The MEMS is designed to tilt the microscopic mirror at varying angles along a single scanning axis in a periodic manner.
  • A rotary platform is connected to the microscopic mirror and rotates it about a rotation axis in a periodic fashion.
  • A light emitter is used to direct light onto the mirror.
  • The light emitter is modulated based on the position of the microscopic mirror, which is determined by its tilt and rotation.
  • This system allows for the projection of images in a head mounted display.


Original Abstract Submitted

A projector system in a head mounted display (HMD). The projector system includes a microscopic mirror. A microelectromechanical system (MEMS) is coupled to the microscopic mirror. The MEMS is configured to tilt the microscopic mirror at a varying scan angle in a first periodic fashion along a single scanning axis. A rotary platform is coupled to the microscopic mirror. The rotary platform is configured to rotate the microscopic mirror about a rotation axis in a second periodic fashion. A light emitter is configured to direct light into the mirror. The light emitter is configured to be modulated based on the position of the microscopic mirror due to the microscopic mirror being tilted along the scanning axis and rotated about the rotary axis.

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