Image display apparatus
    52.
    发明授权

    公开(公告)号:US12095977B2

    公开(公告)日:2024-09-17

    申请号:US17784234

    申请日:2020-12-04

    摘要: It is an objective of the invention of the present application to provide an image display apparatus capable of reducing a change in a display state of a virtual image that depends on a change in a viewpoint position. An image display apparatus according to an embodiment of the present technology includes an emission unit, a diffractive optical element, and an emission control unit. The emission unit emits image light of a target image. The diffractive optical element includes an incident surface and an emission surface, diffracts the image light entering the incident surface, emits the image light from the emission surface, and displays a virtual image that is the target image. The emission control unit controls emission of the image light by the emission unit by using image data generated in accordance with a change in a display state of the virtual image that depends on a change in a viewpoint position.

    Lens for a visual alarm detector
    54.
    发明授权

    公开(公告)号:US12094326B2

    公开(公告)日:2024-09-17

    申请号:US17042643

    申请日:2019-03-29

    摘要: A dome lens extending upwardly about a center axis A and outwardly in a radial direction R, having: a first portion forming a first annular ring about the center axis A that includes a first inner surface that is convex, and being oriented so that a first tangent to the first inner surface is at a first angle to the center axis A that is less than forty-five degrees; a second portion being continuous with the first portion and forming a second annular ring about the center axis A and including a second inner surface that is convex, and being oriented so a second tangent to the second inner surface is canted toward the center axis A; a third portion being continuous with the second portion to enclose the lens, forming an annular solid disk about the center axis A, and including a third inner surface that is convex.

    Correcting aberration and apodization of an optical system using correction plates

    公开(公告)号:US12092814B2

    公开(公告)日:2024-09-17

    申请号:US17574157

    申请日:2022-01-12

    申请人: KLA Corporation

    IPC分类号: G02B27/00 G02B27/58

    CPC分类号: G02B27/0068 G02B27/58

    摘要: An optical system with aberration correction is disclosed. The optical system may include an illumination source. The optical system may include a detector. The optical system may include one or more collection optics configured to image a sample onto the detector based on illumination from the illumination source. The optical system may include two or more aberration correction plates located in one or more pupil planes of the one or more collection optics. The two or more aberration correction plates may provide at least partial correction of two or more linearly-independent aberration terms. Any particular one of the two or more aberration correction plates may have a spatially-varying thickness profile providing a selected amount of correction for a single particular aberration term of the two or more linearly-independent aberration terms.

    DEVICE AND METHOD FOR EXTENDED DEPTH OF FIELD IMAGING

    公开(公告)号:US20240305903A1

    公开(公告)日:2024-09-12

    申请号:US18666158

    申请日:2024-05-16

    摘要: A device and method for extended depth of field imaging are provided. The device includes an optical device configured to simultaneously form intermediate images of an object at different distances with a blur effect on at least parts of images of the object, the optical device comprising at least one optical element and at least two pupil zones formed to provide a predetermined distribution of optical powers and aberrations within each of the at least two pupil zones, based on which point spread function is formed, defined by a curve with minimized side peaks compared to a central peak in a given range of object distances, each of the at least two pupil zones corresponding to a respective given range of object distances and a respective given range of field angles, a sensor configured to simultaneously register the intermediate images formed by the optical device from different object distances and at different field angles, and an image processor communicatively connected to the sensor and the optical device, wherein the image processor is configured to process the intermediate images of the object with the blur effect on at least parts of the images of the object registered by the sensor, the intermediate images being processed based on an obtained point spread function over the given range of object distances and field angles, and reconstruct resulting images without the blur effect at output regardless of object distances.

    Positioning method and device
    59.
    发明授权

    公开(公告)号:US12085722B2

    公开(公告)日:2024-09-10

    申请号:US18475415

    申请日:2023-09-27

    IPC分类号: G02B27/01 G02B27/00

    摘要: A positioning method and device, the method including: extracting multiple light spots from a current image frame, wherein the current image frame is an image currently collected by an extended reality device; determining an interference light spot in the multiple light spots according to information about a historical interference light spot, and removing the interference light spot in the multiple light spots, recognizing whether there is a light spot of a luminous light source in remaining light spots after removing the interference light spot, wherein the luminous light source is a light source set on a human-computer interaction apparatus, and the human-computer interaction apparatus is used for a user to interact with the extended reality device; determining a current pose of the human-computer interaction apparatus according to the light spot of the luminous light source recognized in the remaining light spots.

    Optical lens group
    60.
    发明授权

    公开(公告)号:US12085693B2

    公开(公告)日:2024-09-10

    申请号:US17009688

    申请日:2020-09-01

    发明人: Litong Song Lin Huang

    摘要: The present disclosure discloses an optical lens group including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has negative refractive power; the second lens has refractive power, and an image-side surface thereof is a concave surface; the third lens has refractive power, and an image-side surface thereof is a convex surface; the fourth lens has positive refractive power, and an object-side surface thereof is a convex surface; the fifth lens has negative refractive power; and the sixth lens has refractive power. The third lens is made of glass, and a center thickness CT3 of the third lens along the optical axis and a center thickness CT4 of the fourth lens along the optical axis satisfy 1.5