Display apparatus including volume grating based combiner
AssigneesSamsung Electronics Co., Ltd., Seoul National University R&Db Foundation
InventorsChangkun Lee, Byoungho Lee, Jinsoo Jeong, Seokil Moon, Geeyoung Sung, Hongseok Lee
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Abstract
A display apparatus including a volume grating-based combiner is disclosed. The display apparatus includes: an image providing device; and a combiner, wherein the combiner includes a plurality of volume gratings configured to diffract light containing an image, which is emitted from the image providing device, each volume grating has a first surface and a second surface facing each other, and each volume grating is further configured to diffract light incident on the first surface and transmit therethrough light incident on the second surface without diffraction.
Claims25
A display apparatus comprising:
- an image providing device configured to provide an image;
- and
- a combiner configured to combine light containing the image, which is emitted from the image providing device, and light containing an external landscape,
- wherein the combiner comprises:
- a transparent substrate;
- and
- a plurality of volume gratings on the transparent substrate, the plurality of volume gratings being configured to diffract the light containing the image emitted from the image providing device,
- wherein each volume grating of the plurality of volume gratings has a first surface and a second surface facing each other,
- wherein each volume grating of the plurality of volume gratings is configured to diffract light incident on the first surface and transmit therethrough light incident on the second surface without diffraction, and
- wherein a distance between two adjacent volume gratings of the plurality of volume gratings is greater than or equal to a width of each volume grating of the plurality of volume gratings.
A display apparatus comprising:
- an image providing device configured to provide an image;
- a combiner configured to combine light containing the image, which is emitted from the image providing device, and light containing an external landscape;
- and
- an eye tracker configured to track a location of a pupil of an observer and measure a size of the pupil of the observer,
- wherein the combiner comprises a plurality of volume gratings configured to diffract the light containing the image emitted from the image providing device,
- wherein each volume grating of the plurality of volume gratings has a first surface and a second surface facing each other, and
- wherein each volume grating of the plurality of volume gratings is configured to diffract light incident on the first surface and transmit therethrough light incident on the second surface without diffraction,
- wherein the image providing device is further configured to adjust a beam diameter of light incident on the first surface of each volume grating of the plurality of volume gratings, based on information with respect to the location of the pupil of the observer or information with respect to the size of the pupil of the observer.
Dependencies are inferred from the claim text.