Angularly segmented hot mirror for eye tracking
AssigneeMagic Leap, Inc.
InventorDavid COHEN
Life of this patent
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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, for example, with different segments having different angles or different optical power. The imaging system can be used for eye tracking, biometric identification, multiscopic reconstruction of the three-dimensional shape of the eye, etc. Methods for manufacturing angularly segmented optical elements are also provided. The methods can include injection molding.
Claims18
An optical device comprising:
- a first molded component at least partly formed of a first polymer material, the first molded component comprising a first component surface and a second component surface opposite the first component surface, wherein the first component surface is a segmented surface that includes a first segment and a second segment, wherein the first segment forms a non-zero angle relative to the second segment, and wherein at least a portion of the second component surface is substantially flat and substantially parallel to the first segment of the first component surface;
- a hot mirror film disposed on the first segment and the second segment of the segmented surface of the first molded component;
- and
- a second molded component at least partly formed of a second polymer material, wherein the second molded component is arranged such that the hot mirror film is between the first molded component and the second molded component.
Dependencies are inferred from the claim text.