US Patent Application 18188322. Optical Systems for Providing Polarized Light to a Waveguide simplified abstract
Contents
Optical Systems for Providing Polarized Light to a Waveguide
Organization Name
Inventor(s)
Vikrant Bhakta of Santa Clara CA (US)
Guolin Peng of Sunnyvale CA (US)
Hyungryul Choi of San Jose CA (US)
Scott M. Delapp of San Diego CA (US)
Optical Systems for Providing Polarized Light to a Waveguide - A simplified explanation of the abstract
- This abstract for appeared for US patent application number 18188322 Titled 'Optical Systems for Providing Polarized Light to a Waveguide'
Simplified Explanation
The abstract describes a display that uses a waveguide to provide light to a specific viewing area. The display includes structures that recycle polarization, allowing for maximum efficiency of the light transmission. These structures consist of a polarizing beam splitter and a prism, which separate the light into two portions with different polarizations. One portion is transmitted as image light, while the other portion is reflected. Waveplates are used to align the polarizations of the two portions of light before they are coupled into the waveguide. This ensures that the maximum amount of image light is transmitted into the waveguide, optimizing the display's performance.
Original Abstract Submitted
A display may include a waveguide for providing light to an eye box. The display may include polarization recycling structures having a polarizing beam splitter and a prism. The polarizing beam splitter may transmit a first portion of unpolarized light as first image light having a first polarization and may reflect a second portion of the unpolarized light as second image light having a second polarization. One or more waveplates may be mounted to the prism for transmitting the second image light. Upon transmission by the waveplate(s), the second image light may have the same polarization as the first image light. An input coupler may couple the first and second image light into the waveguide. Providing polarized light to the waveguide may maximize the optical efficiency of the waveguide. The polarization recycling structures may maximize the amount of the image light that is coupled into the waveguide.
