3D eyewear adapted for facial geometry

Abstract

Three dimensional (3D) glasses suited for wearers with varying facial geometries are disclosed. A particular embodiment includes a frame adapted to position spectrally filtering lenses at a particular distance from the eyes of the wearer. In a more particular embodiment, the 3D glasses include a means for adjusting the distance between the lenses and the eyes of the wearer. In another particular embodiment, the lenses include positive runout.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is continuation of U.S. patent application Ser. No. 16 / 337,884, filed Mar. 28, 2019, which is 371 US patent application of International PCT / US2017 / 053679, filed Sep. 27, 2017, which claims the benefit of priority from U.S. Provisional Patent application No. 62 / 402,964, filed Sep. 30, 2016, which is hereby incorporated by reference in its entirety.BACKGROUND OF THE INVENTIONField of the Invention[0002]This invention relates generally to three-dimensional (3D) projection systems, and more particularly to eyewear for use with 3D projection systems.Description of the Background Art[0003]3D projection systems are known. 3D images are created by forming separate right and left eye images with varying depths of field. The 3D images are typically filtered through some form of eyewear to ensure the right eye receives only the right eye images and the left eye receives only the left eye images. One example method of 3D imaging is s...

AI Technical Summary

Benefits of technology

The invention provides eyewear that can provide a quality 3D viewing experience for viewers with different facial geometries, such as nose bridge length and brow position. The design of the eyewear considers these facial features and minimizes wavelength shifting that can result from them. The eyewear also limits the distance between the lenses and the wearer's eyes to a minimum distance, which reduces the angular obliqueness at which light passes through the lenses and increases the wavelength shift of filter properties for that light. The eyewear can also have different frames for viewers with different facial geometries, allowing for the use of similar lenses for viewers with different face shapes.

Problems solved by technology

Systems utilizing spectral separation have problems.

This shift changes the wavelengths of the light that are either passed or blocked by the filter, and can cause crosstalk between the right eye and left eye filters and a reduction in optical efficiency.

Previous solutions include curving the filters to minimize off axis incidence; however, this solution is not ideal in every situation.

The inventors have discovered that certain problems of the prior art are exacerbated for viewers with certain facial geometries, for example nose bridge length and brow position.

Images