Multiscopy using collimated backlight and dynamic beam steering
AssigneeDistance Technologies Oy
InventorsMikko Strandborg, Urho Konttori
Life of this patent
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Abstract
A liquid crystal display (LCD) device includes a backlight unit configured to produce collimated light. A relative location of a head or eyes of at least one user with respect to an image plane of the LCD device is determined. A plurality of images are displayed via the LCD device, to sequentially produce sets of collimated light beams. An active optical element, arranged on an optical path of the LCD device, is controlled based on a relative location of a head or a given eye of an individual one of the at least one user with respect to the image plane of the LCD device, to direct a respective one of the sets of collimated light beams towards the head or the given eye of the individual one of the at least one user.
Claims14
A system comprising:
- tracking means;
- a liquid crystal display (LCD) device comprising a backlight unit that is configured to produce collimated light;
- an active optical element arranged on an optical path of the LCD device;
- and
- at least one processor configured to:
- determine a relative location of a head or eyes of at least one user with respect to an image plane of the LCD device, by utilising the tracking means;
- display a plurality of images via the LCD device, to sequentially produce sets of collimated light beams;
- and
- control the active optical element, based on a relative location of a head or a given eye of an individual one of the at least one user with respect to the image plane of the LCD device, to direct a respective one of the sets of collimated light beams towards the head or the given eye of the individual one of the at least one user.
A method comprising:
- determining a relative location of a head or eyes of at least one user with respect to an image plane of a liquid crystal display (LCD) device, by utilising tracking means;
- displaying a plurality of images via the LCD device, to sequentially produce sets of collimated light beams, the LCD device comprising a backlight unit configured to produce collimated light;
- and
- controlling an active optical element arranged on an optical path of the LCD device, based on a relative location of a head or a given eye of an individual one of the at least one user with respect to the image plane of the LCD device, to direct a respective one of the sets of collimated light beams towards the head or the given eye of the individual one of the at least one user.
Dependencies are inferred from the claim text.