Microsoft technology licensing, llc (20240118468). RAINBOW REDUCTION FOR WAVEGUIDE DISPLAYS simplified abstract

RAINBOW REDUCTION FOR WAVEGUIDE DISPLAYS

Organization Name

microsoft technology licensing, llc

Inventor(s)

Yifei Zhang of Bellevue WA (US)

Yarn Chee Poon of Redmond WA (US)

Mathew David Watson of Bellevue WA (US)

RAINBOW REDUCTION FOR WAVEGUIDE DISPLAYS - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240118468 titled 'RAINBOW REDUCTION FOR WAVEGUIDE DISPLAYS

Simplified Explanation

The abstract describes a rainbow artifact mitigation system that includes an angular dependent filter with nanostructures arranged in an array. The filter is designed to partially mitigate light transmission for incident angles above 40° by using different angular transmission functions for different regions of the filter.

• The angular dependent filter is configured to receive and transmit light based on angular transmission functions.
• The filter mitigates light transmission for incident angles above 40°.
• Nanostructures are arranged in an array with sub-wavelength periods.
• Different regions of the filter use different angular transmission functions.

Potential Applications

The technology could be applied in optical systems to reduce rainbow artifacts in imaging and display devices.

Problems Solved

The system addresses the issue of rainbow artifacts that can occur in optical systems due to unwanted light transmission at certain incident angles.

Benefits

• Improved image quality by reducing rainbow artifacts.
• Enhanced display performance by minimizing unwanted light transmission.
• Increased overall optical system efficiency.

Potential Commercial Applications

The technology could be utilized in cameras, projectors, virtual reality headsets, and other optical devices to enhance image quality and reduce unwanted visual effects.

Possible Prior Art

One possible prior art could be the use of anti-reflective coatings on optical elements to reduce unwanted light transmission and improve image quality.

How does the angular dependent filter compare to traditional anti-reflective coatings in terms of effectiveness in mitigating rainbow artifacts?

The angular dependent filter utilizes nanostructures arranged in an array, which may provide more precise control over light transmission compared to traditional coatings. Further research and comparative studies would be needed to determine the effectiveness of the filter in mitigating rainbow artifacts.

What are the potential challenges in implementing the angular dependent filter in commercial optical devices?

One potential challenge could be the scalability of manufacturing processes for producing the nanostructures in large quantities. Additionally, ensuring compatibility with existing optical systems and maintaining cost-effectiveness could be other challenges to consider.

Original Abstract Submitted

a rainbow artifact mitigation system includes an angular dependent filter configured to receive light and to transmit light according to one or more angular transmission functions. the one or more angular transmission functions define light transmission as a function of incident angle for the angular dependent filter, the angular dependent filter is configured to at least partially mitigate transmission of light for at least some incident angles above 40�. the angular dependent filter comprises a plurality of nanostructures, and the nanostructures of the plurality of nanostructures are arranged in an array with one or more sub-wavelength periods. the one or more angular transmission functions comprise at least two different angular transmission functions for different regions of the angular dependent filter.