Dual composite light field device
AssigneeMagic Leap, Inc.
InventorAdrian Kaehler
Life of this patent
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Abstract
An apparatus is disclosed for capturing image information. The apparatus includes a waveguide having opposed planar input and output faces. A diffractive optical element (DOE) is formed across the waveguide. The DOE is configured to couple a portion of the light passing through the waveguide into the waveguide. The light coupled into the waveguide is directed via total internal reflection to an exit location on the waveguide. The apparatus further includes a light sensor having an input positioned adjacent the exit location of the waveguide to capture light exiting therefrom and generate output signals corresponding thereto. A processor determines the angle and position of the coupled light with respect to the input face of the waveguide based on the output signals.
Claims20
An apparatus comprising:
- a processor;
- a wearable head device including a transmissive display comprising:
- a waveguide having:
- a planar input face;
- and
- a planar output face disposed opposite the planar input face, the output face having an exit location;
- a diffractive optical element (DOE) formed across the waveguide, the DOE configured to couple input light into the waveguide and direct the input light via total internal reflection to the exit location;
- and
- a light sensor configured to receive the input light via the waveguide and generate a sensor output signal corresponding to the received input light,
- wherein:
- the processor is configured to generate an output based on the sensor output signal, the output comprising a rectilinear array of pixel values,
- the sensor output signal comprises one or more incoming pixel values, and
- generating the output comprises determining, for a first pixel value of the rectilinear array of pixel values, a corresponding incoming pixel value.
A method comprising:
- receiving, at a light sensor, input light coupled into a waveguide of a transmissive display and directed via total internal reflection to an exit location of a planar output face of the waveguide;
- receiving, from the light sensor, a sensor output signal based on the input light, the sensor output signal comprising one or more incoming pixel values;
- and
- generating an output based on the sensor output signal, the output comprising a rectilinear array of pixel values;
- wherein:
- generating the output comprises determining, for a first pixel value of the rectilinear array of pixel values, a corresponding incoming pixel value.
A non-transitory computer-readable medium storing instructions which, when executed by one or more processors, cause the one or more processors to perform a method comprising:
- receiving, at a light sensor, input light coupled into a waveguide of a transmissive display and directed via total internal reflection to an exit location of a planar output face of the waveguide;
- receiving, from the light sensor, a sensor output signal based on the input light, the sensor output signal comprising one or more incoming pixel values;
- and
- generating an output based on the sensor output signal, the output comprising a rectilinear array of pixel values;
- wherein:
- generating the output comprises determining, for a first pixel value of the rectilinear array of pixel values, a corresponding incoming pixel value.
Dependencies are inferred from the claim text.