公开(公告)号：US11378727B2

公开(公告)日：2022-07-05

申请号：US16224728

申请日：2018-12-18

Applicant: PTOT (SUZHOU) INC. ,  PLATINUM OPTICS TECHNOLOGY INC.

Inventor： Chung-Han Lu ,  Hsiao-Ching Shen ,  Chun-Cheng Hsieh ,  Ming-Zhan Wang

IPC: G02B5/28 ,  G02B5/20 ,  G01N21/359 ,  G02B5/22

Abstract: An absorption type near-infrared filter comprising a first multilayer film, a second multilayer film, and an absorption film comprising an infrared absorbing dye with a weight percentage between 1% and 3%, wherein in the infrared band, the difference between the wavelength with the transmittance at 80% of the absorption film and the wavelength with the reflectivity at 80% of the first multilayer film ranges between 130 nm and 145 nm; the difference between the wavelength with the transmittance at 50% of the absorption film and the wavelength with the reflectivity at 50% of the first multilayer film ranges between 75 nm and 90 nm; the difference between the wavelength with the transmittance at 20% of the absorption film and the wavelength with the reflectivity at 20% of the first multilayer film ranges between 25 nm and 45 nm.

公开(公告)号：US10184827B2

公开(公告)日：2019-01-22

申请号：US15299113

申请日：2016-10-20

Applicant: Platinum Optics Technology Inc.

Inventor： Hsin-Miau Peng ,  Chung-Han Lu ,  Liang-Yu Yen

IPC: G01J3/50 ,  G01J1/04 ,  G02B5/20 ,  G02B5/22 ,  G01J3/12

Abstract: The present disclosure provides a near-infrared absorbing filter, including an absorbing type infrared filtering medium having opposite first and second surfaces; an organic coating layer formed on the first surface of the absorbing type filtering medium for absorbing infrared rays; a first multi-layered film structure formed on the organic coating layer with the organic coating layer disposed between the first multi-layered film structure and the absorbing type infrared filtering medium; and a second multi-layered film structure formed on the second surface of the absorbing type infrared filtering medium. The near-infrared filter of the present disclosure is able to reduce the wavelength difference of T50 and T20 of the incident light within the range of from 0 to 30 degrees to less than 5 nm, thereby reducing chromatic aberration effectively and reducing ghost images of infrared reflections. The disclosure further provides an image sensor including the near-infrared absorbing filter.

公开(公告)号：US11971565B2

公开(公告)日：2024-04-30

申请号：US17824904

申请日：2022-05-26

Applicant: PTOT (SUZHOU) INC. ,  PLATINUM OPTICS TECHNOLOGY INC.

Inventor： Chung-Han Lu ,  Hsiao-Ching Shen ,  Chun-Cheng Hsieh ,  Ming-Zhan Wang

IPC: G02B5/28 ,  G01N21/359 ,  G02B5/20 ,  G02B5/22 ,  G02B5/30

CPC classification number: G02B5/282 ,  G01N21/359 ,  G02B5/208 ,  G02B5/223

Abstract: An absorption type near-infrared filter comprising a first multilayer film, a second multilayer film, and an absorption film, wherein in the ultraviolet band, the difference of between the wavelength with the transmittance at 80% of the absorbing film and the wavelength with the reflectivity at 80% of the first multilayer film falls in the range between 25 nm and 37 nm, the difference of between the wavelength with the transmittance at 50% of the absorbing film and the wavelength with the reflectivity at 50% of the first multilayer film falls in the range between 6 nm and 14 nm, and the difference of between the wavelength with the transmittance at 20% of the absorbing film and the wavelength with the reflectivity at 20% of the first multilayer film falls in the range between −6 nm and 2.5 nm.

公开(公告)号：US20230066022A1

公开(公告)日：2023-03-02

申请号：US17894204

申请日：2022-08-24

Applicant: PLATINUM OPTICS TECHNOLOGY INC.

Inventor： Chung-Han Lu ,  Che-Yu Chen ,  Ming-Jui Yang

IPC: G02B5/20 ,  G02B27/00 ,  C03C4/08 ,  C03C3/062

Abstract: A near-infrared absorbing glass is provided and includes 10% to 40% by weight of phosphorus and 5% to 35% by weight of iron, where a molar ratio of phosphorus to iron (P/Fe) of the near-infrared absorbing glass is between 1.75 and 5, and the near-infrared absorbing glass has an average transmittance of less than 10% to light with wavelengths ranging from 930 nm to 950 nm. A near-infrared cut-off filter including the near-infrared absorbing glass is also provided.