AUGMENTED REALITY APPARATUS AND OPTICAL SYSTEM THEREFOR

    公开(公告)号:US20230296905A1

    公开(公告)日:2023-09-21

    申请号:US18325986

    申请日:2023-05-30

    CPC classification number: G02B27/0172 G02B27/017 G02B27/123

    Abstract: The disclosure relates to an optical system for an augmented reality apparatus, comprising: an image projection source; and a polarizing beam splitter. The polarizing beam splitter has a beam splitting side adjacent to the image projection source and a transmission side facing away from the image projection source. The polarizing beam splitter is arranged such that light emitted from the image projection source is able to be non-perpendicularly incident on the beam splitting side and be at least partially reflected. The polarizing beam splitter is configured such that when light is incident on the beam splitting side, a polarized light component passes through the polarizing beam splitter and is transmitted through the transmission side thereof, and a polarized light component is reflected from the beam splitting side. The optical system also comprises a polarizer disposed between the image projection source and the beam splitting side of the polarizing beam splitter.

    AUGMENTED REALITY APPARATUS AND OPTICAL SYSTEM THEREFOR

    公开(公告)号:US20210271100A1

    公开(公告)日:2021-09-02

    申请号:US17326014

    申请日:2021-05-20

    Abstract: Provided are an optical system for an augmented reality apparatus and an augmented reality apparatus. The optical system includes an image source; a polarizing beam splitter including a polarizing beam splitting film and a polarizing film; a polarizer disposed between the image source and the beam splitting side of the polarizing beam splitter; a wave plate adjacent to the beam splitting side; a semi-reflector located downstream of the wave plate in an optical path of the reflected light; and an additional wave plate and an additional polarizer which are sequentially located distal to the semi-reflector. The image source has a planar image source for emitting light, wherein a plane where the beam splitting side of the beam splitter component locates is at a first angle (β) relative to a normal of the image source, the first angle has a value between 11° and 79°.

    Augmented reality apparatus and optical system therefor

    公开(公告)号:US11042040B2

    公开(公告)日:2021-06-22

    申请号:US16930000

    申请日:2020-07-15

    Abstract: The disclosure relates to an augmented reality apparatus and an optical system therefor. The optical system comprises an image source; a beam splitter component having a beam splitting side adjacent to the image source and a transmission side facing away from the image source; a wave plate adjacent to the beam splitting side, the beam splitter component being arranged in such a way that light emitted from the image source is able to be non-perpendicularly incident on the beam splitting side and at least partially reflected toward the wave plate; and a semi-reflector located downstream of the wave plate in an optical path of the reflected light, wherein the beam splitter component is configured in such a way that when the light emitted from the image source is incident on the beam splitting side, a polarized light component, whose polarization is in a first direction, passes through the beam splitter component to be transmitted through the transmission side, and a polarized light component, whose polarization is in a second direction perpendicular to the first direction, is reflected by the beam splitting side toward the wave plate, and wherein the beam splitter component is also configured in such a way that when light is incident on the transmission side, a polarized light component of the light polarized in the first direction is able to pass through the beam splitter component to be transmitted through the beam splitting side, and a polarized light component of the light polarized in the second direction is able to be absorbed in the beam splitter component, wherein the wave plate is preferably a quarter-wave plate. Using the inventive technical means, influence of unwanted light on the image quality can be eliminated and in the meanwhile influence of stray light can be eliminated.

    Wearable AR system, AR display device and its projection source module

    公开(公告)号:US11500205B2

    公开(公告)日:2022-11-15

    申请号:US16990633

    申请日:2020-08-11

    Abstract: The application provides an augmented reality display device comprising a projection source module and an optical path module, the projection source module comprising a projection source (12) and a beam shaping element (14) which are integrated into a unitary piece, and the optical path module comprising a beamsplitter (20) and a reflector (60), wherein virtual image light (VL) emitted from the projection source (12) and carrying virtual image information is emitted out of the projection source module after being shaped by the beam shaping element (14), projected onto the beamsplitter (20) first, then reflected onto the reflector (60) by the beamsplitter (20), then reflected by the reflector (60), and enters a human eye (E) eventually, and scene light (AL) carrying real scene information enters the reflector (60) from an outside of the reflector (60), and is transmitted through the reflector (60) and the beamsplitter (20) into the human eye (E). The application also provides a wearable augmented reality system comprising the augmented reality display device and the projection source module for the augmented reality display device.

    Augmented reality apparatus and optical system therefor

    公开(公告)号:US11460704B2

    公开(公告)日:2022-10-04

    申请号:US17326014

    申请日:2021-05-20

    Abstract: Provided are an optical system for an augmented reality apparatus and an augmented reality apparatus. The optical system includes an image source; a polarizing beam splitter including a polarizing beam splitting film and a polarizing film; a polarizer disposed between the image source and the beam splitting side of the polarizing beam splitter; a wave plate adjacent to the beam splitting side; a semi-reflector located downstream of the wave plate in an optical path of the reflected light; and an additional wave plate and an additional polarizer which are sequentially located distal to the semi-reflector. The image source has a planar image source for emitting light, wherein a plane where the beam splitting side of the beam splitter component locates is at a first angle (β) relative to a normal of the image source, the first angle has a value between 11° and 79°.

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