公开(公告)号：US20240118462A1

公开(公告)日：2024-04-11

申请号：US18480584

申请日：2023-10-04

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wen-Yu TSAI ,  Cheng-Yu TSAI ,  Chun-Hung TENG

IPC: G02B5/02 ,  G02B1/115 ,  G02B5/22

CPC classification number: G02B5/0247 ,  G02B1/115 ,  G02B5/0294 ,  G02B5/22

Abstract: A bokeh filter membrane, which is disposed on a surface of a substrate, includes a gradient thickness absorbing membrane and an anti-reflection membrane. The anti-reflection membrane includes a high-and-low refraction membrane and a gradient refraction membrane. A transmittance of the substrate at a center thereof is greater than a transmittance of the substrate at a peripheral region thereof. The high-and-low refraction membrane includes a first high-and-low refraction membrane and a second high-and-low refraction membrane, the gradient thickness absorbing membrane is farther away from the substrate than the first high-and-low refraction membrane, the second high-and-low refraction membrane is farther away from the substrate than the gradient thickness absorbing membrane, and the gradient refraction membrane is farther away from the substrate than the second high-and-low refraction membrane. The gradient refraction membrane includes a plurality of pores. A main material of the gradient refraction membrane is metal oxide.

公开(公告)号：US20220196882A1

公开(公告)日：2022-06-23

申请号：US17577051

申请日：2022-01-17

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wen-Yu TSAI ,  Chien-Pang CHANG ,  Chi-Wei CHI ,  Wei-Fong HONG ,  Chun-Hung TENG ,  Kuo-Chiang CHU

IPC: G02B1/115

Abstract: An optical lens assembly includes, from an object side to an image side, at least four optical lens elements. At least one of the at least four optical lens elements includes an anti-reflective coating. The at least one optical lens element including the anti-reflective coating is made of a plastic material. The anti-reflective coating is arranged on an object-side surface or an image-side surface of the at least one optical lens element including the anti-reflective coating. The anti-reflective coating includes at least one coating layer. One of the at least one coating layer at the outer of the anti-reflective coating is made of ceramics. The anti-reflective coating includes a plurality of holes, and sizes of the plurality of holes adjacent to the outer of the anti-reflective coating are larger than sizes of the plurality of holes adjacent to the inner of the anti-reflective coating.

公开(公告)号：US20210124096A1

公开(公告)日：2021-04-29

申请号：US17140171

申请日：2021-01-04

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yeo-Chih HUANG ,  Pei-Chi CHANG ,  Chun-Hung TENG

IPC: G02B5/00 ,  G02B9/62 ,  G02B9/60 ,  G02B13/00

Abstract: An optical image lens assembly includes a plurality of optical lens elements. The optical lens elements include a plurality of plastic optical lens elements having refractive power and aspheric surfaces. The plastic optical lens elements are formed by an injection molding method and include at least one defined-wavelength light absorbing optical lens element, and the defined-wavelength light absorbing optical lens element includes at least one defined-wavelength light absorbent.

公开(公告)号：US20200174167A1

公开(公告)日：2020-06-04

申请号：US16699224

申请日：2019-11-29

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Chiang CHU ,  Chien-Pang CHANG ,  Chun-Hung TENG ,  Wen-Yu TSAI

IPC: G02B5/00 ,  G02B13/00

Abstract: A miniature optical lens assembly, which has at least one of optical element, includes the optical element. The optical element includes a low reflection layer disposed on at least one surface of the optical element. The low reflection layer includes a plurality of nanocrystalline grains, and the nanocrystalline grains are located on one surface of the low reflection layer. The optical element is at least one of a light blocking element, an annular spacer element and a barrel element.

公开(公告)号：US20250102704A1

公开(公告)日：2025-03-27

申请号：US18800379

申请日：2024-08-12

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Ming CHEN ,  Pi-Kuei SHIH ,  Chun-Che HSUEH ,  Yu Jie HONG ,  Chun-Hung TENG

IPC: G02B1/00 ,  G02B6/26

Abstract: A waveguide plate includes a substrate and at least two metasurfaces. The at least two metasurfaces are disposed on the substrate, wherein each of the metasurfaces includes at least two metastructure arrays, and the at least two metastructure arrays are linearly arranged. Each of the metastructure arrays includes at least two metastructure groups, and each of the metastructure groups includes at least two metastructures.

公开(公告)号：US20230305200A1

公开(公告)日：2023-09-28

申请号：US18187744

申请日：2023-03-22

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wen-Yu TSAI ,  Cheng-Yu TSAI ,  Chun-Hung TENG

IPC: G02B5/08 ,  G02B1/18

CPC classification number: G02B5/0808 ,  G02B1/18 ,  G02B2207/101 ,  G02B13/0065

Abstract: An optical lens assembly includes at least one optical lens element and at least one optical element. At least one surface of the at least one optical lens element or the at least one optical element includes a low reflection layer, and the low reflection layer includes a rough layer, a nanocrystalline particle and a hydrophobic layer. The nanocrystalline particle is disposed between the rough layer and the hydrophobic layer, and the hydrophobic layer is farther away from the surface of the at least one optical lens element or the at least one optical element than the nanocrystalline particle. A material of the nanocrystalline particle at least includes SiO2.

公开(公告)号：US20230251400A1

公开(公告)日：2023-08-10

申请号：US18054935

申请日：2022-11-14

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wen-Yu TSAI ,  Hsiang-Chi TANG ,  Yu Jie HONG ,  Chun-Hung TENG

IPC: G02B1/04 ,  G02B1/115 ,  G02B3/04 ,  G02B5/20 ,  G02B13/00

CPC classification number: G02B1/041 ,  G02B1/115 ,  G02B3/04 ,  G02B5/208 ,  G02B13/008

Abstract: An optical lens assembly includes at least one optical element. At least one of the at least one optical element includes a multi-layer coating membrane, and the multi-layer coating membrane is formed by alternately stacking high refractive index layers and low refractive index layers. The multi-layer coating membrane is a dual-bandpass filtering membrane.

公开(公告)号：US20220163710A1

公开(公告)日：2022-05-26

申请号：US17534564

申请日：2021-11-24

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Pei-Chi CHANG ,  Hung-Shuo CHEN ,  Chun-Hung TENG

IPC: G02B5/20 ,  G02B13/14 ,  G02B7/02 ,  H04N5/225

Abstract: An optical lens assembly includes at least three optical lens elements. At least one of the optical lens elements includes an infrared filtering coating, the optical lens element including the infrared filtering coating is made of a plastic material, the infrared filtering coating is arranged on an object-side surface or an image-side surface of the optical lens element, a surface of the optical lens element including the infrared filtering coating is aspheric, and the infrared filtering coating includes at least two different refractive indices. At least one of the optical lens elements includes a long-wavelength absorbing material, and the optical lens element including the long-wavelength absorbing material is made of a plastic material.

公开(公告)号：US20220035128A1

公开(公告)日：2022-02-03

申请号：US17389505

申请日：2021-07-30

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chien-Pang CHANG ,  Pei-Chi CHANG ,  Chun-Hung TENG

IPC: G02B13/00 ,  H04N5/225 ,  H04M1/02 ,  G02B5/00 ,  G02B1/04 ,  G02B5/20

Abstract: An optical lens assembly includes at least two optical lens elements. At least one of the optical lens elements includes a long wavelength absorbing material, the optical lens element including the long wavelength absorbing material is made of a plastic material, and the long wavelength absorbing material is evenly mixed with the plastic material. At least one of the optical lens elements includes a long wavelength filter coating, the optical lens element including the long wavelength filter coating is made of a plastic material, and the long wavelength filter coating is arranged on an object-side surface or an image-side surface of the optical lens element. The long wavelength filter coating includes a plurality of high refractive index coating layers and a plurality of low refractive index coating layers, and the high refractive index coating layers and the low refractive index coating layers are stacked in alternations.

公开(公告)号：US20250147205A1

公开(公告)日：2025-05-08

申请号：US19014883

申请日：2025-01-09

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wen-Yu TSAI ,  Chien-Pang CHANG ,  Chi-Wei CHI ,  Wei-Fong HONG ,  Chun-Hung TENG ,  Kuo-Chiang CHU

IPC: G02B1/115 ,  G02B1/00 ,  G02B3/08 ,  G02B13/18

Abstract: An optical lens assembly includes, from an object side to an image side, at least four optical lens elements. At least one of the at least four optical lens elements includes an anti-reflective coating. The at least one optical lens element including the anti-reflective coating is made of a plastic material. The anti-reflective coating is arranged on an object-side surface or an image-side surface of the at least one optical lens element including the anti-reflective coating. The anti-reflective coating includes at least one coating layer. One of the at least one coating layer at the outer of the anti-reflective coating is made of ceramics. The anti-reflective coating includes a plurality of holes, and sizes of the plurality of holes adjacent to the outer of the anti-reflective coating are larger than sizes of the plurality of holes adjacent to the inner of the anti-reflective coating.