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filingDate 2018-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date>
grantDate 2021-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationDate 2021-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber CN-110168428-B
titleOfInvention Compact Eye Tracking Using Folding Display Optics
abstract Optical components for use in virtual and augmented reality environments are described. Optical assemblies may include lenses, filter stacks, cameras, and image projection devices. For example, the optical assembly may include at least one lens, a first filter stack between the at least one lens and the image projection device, a second filter stack between the first filter stack and the image projection device, and a A camera configured to capture images of infrared reflections of light through the at least one lens.
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