Method for manufacturing an optical microlens array

    公开(公告)号:US12092843B2

    公开(公告)日:2024-09-17

    申请号:US16544818

    申请日:2019-08-19

    IPC分类号: G02B3/00 G02B1/14

    CPC分类号: G02B3/0031 G02B1/14

    摘要: The invention relates to an optical microlens array and to a method for manufacturing an optical microlens arrays, wherein the method includes, among other things: providing a substrate having a first side and an opposite second side. The method further includes applying a photoresist to the first side of the substrate at least in portions, and structuring the photoresist such that the structured photoresist remains at predetermined locations on the first side of the substrate where one optical microlens each is to be later arranged. In addition, the method includes applying a hydrophobic coating to the first side of the substrate and subsequently removing the structured photoresist including the hydrophobic coating located thereon from the first side of the substrate. Furthermore, according to the invention, one microlens each is arranged on the spots of the first side of the substrate that are freed from the structured photoresist.

    Optical Device, Optical Module, and Method for Manufacturing Optical Device or Optical Module

    公开(公告)号:US20240176049A1

    公开(公告)日:2024-05-30

    申请号:US18283768

    申请日:2022-03-16

    IPC分类号: G02B3/00 H01S5/02253

    摘要: A technology with a simpler and smaller configuration and capable of suppressing light leakage from an optical module is provided. An optical device (3) includes an optical region (3a) in which an optical element is arranged, at a part of at least one surface of a substrate portion (3b) having a flat plate shape. A peripheral region (3d) in which an optical function as an optical device is not used is provided around the optical region (3a) at the surface, of the substrate portion (3b), provided with the optical region (3a). A light-blocking and diffusing portion (3e) configured to suppress transmission of light or diffuse light is formed at the peripheral region (3d) or a region corresponding to the peripheral region (3d) at an opposite surface of the substrate portion (3b).

    Replicating optical elements onto a substrate

    公开(公告)号:US11897213B2

    公开(公告)日:2024-02-13

    申请号:US17608652

    申请日:2020-06-12

    IPC分类号: B29D11/00 G02B3/00

    摘要: Techniques for controlling the flow of replication material (e.g., epoxy) during the formation of replicated optical elements include providing a transparent substrate (220) onto which the optical elements are to be replicated. The substrate (220) includes a structured UV curable shield (202) adhering to its surface. The UV curable shield (202), in turn, has openings (203) that expose portions of the surface of the transparent substrate (220) for replication of the optical elements. During the replication process, excess replication material (124A) may flow onto the UV curable shield (202), which subsequently can be cured so as to facilitate the release and removal of the shield (202) along with the excess replication material (124A).

    Optical lens assembly
    8.
    发明授权

    公开(公告)号:US11815700B2

    公开(公告)日:2023-11-14

    申请号:US16993962

    申请日:2020-08-14

    摘要: An optical lens assembly is produced by an injection-compression molding process. The optical lens assembly includes a lens body and an injection-molded structure. The lens body includes a first lens surface and a second lens surface opposed to the first lens surface. The lens body is divided into an optically effective zone and an optically ineffective zone. The injection-molded structure has at least one gate land in response to the injection-compression molding process. At least a portion of the optically ineffective zone of the lens body is covered by the injection-molded structure, and the injection-molded structure is assembled with and positioned by an external structure. Each of the first lens surface and the second lens surface is one of a multi-aperture lens surface, a lenticular lens surface, an aspheric lens surface, a flat lens surface and a freeform lens surface.

    Twill optical film capable of realizing 3D effect of naked eye of display screen and preparation method thereof

    公开(公告)号:US11747522B1

    公开(公告)日:2023-09-05

    申请号:US18177119

    申请日:2023-03-02

    IPC分类号: G02B3/00 G02B1/04 G02B30/27

    摘要: The present disclosure discloses a twill optical film capable of realizing a 3D effect of a naked eye of a display screen and a preparation method thereof. The preparation method of the twill optical film includes the steps of: step 1: coating a grating coating with a high refractive index on one side of a transparent base film using a micro-nano imprint technique, and curing same by ultraviolet to form a uniformly arranged columnar lens array; and obtaining a twill grating layer; step 2: coating a filling coating with a low refractive index on the twill grating layer and curing same by ultraviolet; placing same in an oven in an atmosphere with a relative humidity of 95-98% controlled by a saturated solution of ammonium dihydrogen phosphate; setting the temperature to 100-120° C., and thermally cross-linking same for 3-4 hours; and obtaining a twill optical film.

    OPTICAL LENS ASSEMBLY AND ELECTRONIC DEVICE
    10.
    发明公开

    公开(公告)号:US20230262309A1

    公开(公告)日:2023-08-17

    申请号:US18308756

    申请日:2023-04-28

    IPC分类号: H04N23/55 G02B3/00 G02B5/00

    摘要: An optical lens assembly includes at least one dual molded lens element. The dual molded lens element has a central axis, and includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optical effective region and a lens peripheral region, and the lens peripheral region surrounds the optical effective region. A light absorbing portion surrounds the optical effective region. The light transmitting portion and the light absorbing portion are made of different plastic materials with different colors, and the light absorbing portion includes at least three gate portions surrounding the central axis, wherein all gate portions are located on the same surface of the dual molded lens element. The light transmitting portion and the light absorbing portion of the dual molded lens element are integrally formed by the injection molding.