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US 2021/0278675 A1Published application
Eye imaging with an off-axis imager
AssigneeMagic Leap, Inc.
InventorsMichael Anthony Klug, Adrian Kaehler
Life of this patent
Estimating the term…
Abstract
Examples of an imaging system for use with a head mounted display (HMD) are disclosed. The imaging system can include a forward-facing imaging camera and a surface of a display of the HMD can include an off-axis diffractive optical element (DOE) or hot mirror configured to reflect light to the imaging camera. The DOE or hot mirror can be segmented. The imaging system can be used for eye tracking, biometric identification, multiscopic reconstruction of the three-dimensional shape of the eye, etc.
Claims20
An imaging system comprising:
- a reflective element that reflects light in a first wavelength range;
- and
- an imager sensitive to light in a non-empty subset of less than all of the first wavelength range, wherein the imager is configured to be oriented to capture light reflected by the reflective element.
An imaging system comprising:
- a reflective element that reflects light in a first wavelength range, wherein the reflective element comprises an off-axis holographic mirror (OAHM) or an off-axis volumetric diffractive optical element (OAVDOE), and wherein the reflective element is oriented to reflect light propagating from an eye of a user when the imaging system is placed in front of the eye of the user;
- and
- an imager sensitive to light in a non-empty subset of less than all of the first wavelength range, wherein the imager is oriented to image an image of the eye of the user by capturing light propagating from the eye of the user reflected by the reflective element.
An imaging system comprising:
- a display comprising a reflective element that reflects light in a first wavelength range, wherein the reflective element comprises a hot mirror, an off-axis holographic mirror (OAHM), or an off-axis volumetric diffractive optical element (OAVDOE);
- and
- an imager sensitive to light in the first wavelength range, wherein the imager is configured to be oriented to capture at least light reflected by the reflective element.
Dependencies are inferred from the claim text.