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    Photoacoustic element, photoacoustic imaging device, and photoacoustic element manufacturing method
    61.
    发明授权
    Photoacoustic element, photoacoustic imaging device, and photoacoustic element manufacturing method 有权

    公开(公告)号：US12092612B2

    公开(公告)日：2024-09-17

    申请号：US17640661

    申请日：2020-08-21

    申请人： TAMRON CO., LTD.

    发明人： Shunya Fukui

    IPC分类号： G01N29/06 ,  G01N29/24

    CPC分类号： G01N29/06 ,  G01N29/2418

    摘要： A photoacoustic element which has excellent optical properties and acoustic properties is achieved. The photoacoustic element (1) includes: a metal layer (10); a first member (11) which is bonded to one primary surface of the metal layer (10); and a second member (12) which is bonded to another primary surface of the metal layer (10). The metal layer (10) reflects optical waves and transmits photoacoustic waves stemming from optical waves. Materials of the metal layer (10), the first member (11), and the second member (12) are selected so as to match an acoustic impedance of the metal layer (10) and an acoustic impedance of each of the first member (11) and the second member (12).

    Light reduction mechanism, output data correction method, and laser beam measurement device
    62.
    发明授权
    Light reduction mechanism, output data correction method, and laser beam measurement device 有权

    公开(公告)号：US11976966B1

    公开(公告)日：2024-05-07

    申请号：US18502614

    申请日：2023-11-06

    申请人： Tamron Co., Ltd.

    发明人： Kazunori Komori

    IPC分类号： G01J1/42 ,  G01J1/04 ,  G02B27/14

    CPC分类号： G01J1/4257 ,  G01J1/0411 ,  G02B27/145

    摘要： Provided is a light reduction mechanism which includes a plate-type first beam splitter and a plate-type second beam splitter, in which in a case where the X axis and the Y axis are arbitrary orthogonal coordinate axes in the plane perpendicular to the optical axis of laser beam irradiation optical unit whose origin is in the optical axis, the first beam splitter is arranged with the X axis as a rotation axis and inclined at an angle α in the range from 30° to 60° inclusive with respect to the plane perpendicular to the optical axis, and the second beam splitter is arranged with the X′ axis, which is parallel to the X axis and passes through the optical axis, as a rotation axis, and inclined at an angle −α with respect to the plane perpendicular to the optical axis.

    Optical system and imaging device
    63.
    发明授权
    Optical system and imaging device 有权

    公开(公告)号：US11899280B2

    公开(公告)日：2024-02-13

    申请号：US17479150

    申请日：2021-09-20

    申请人： TAMRON CO., LTD.

    发明人： Toshiya Segawa ,  Yuki Mori ,  Hirofumi Tabata

    IPC分类号： G02B15/14 ,  G02B7/02 ,  G02B9/60 ,  G02B7/04 ,  G02B27/00

    CPC分类号： G02B9/60 ,  G02B7/04 ,  G02B27/0025

    摘要： There is provided: an optical system including a focus lens group having positive refractive power and configured to move along an optical axis when focusing from an infinite-distance object to a short-distance object, and satisfying predetermined conditional expressions; and an imaging device including the optical system. The focus lens group includes a lens subgroup A, an aperture stop, and a lens subgroup B in order from the object side. The lens subgroup A includes a negative lens, a positive lens, and a positive lens in order from the image side. The lens subgroup B includes a negative lens and a positive lens in order from the object side.

    IMAGE FORMING APPARATUS
    64.
    发明公开
    IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20230363629A1

    公开(公告)日：2023-11-16

    申请号：US18134870

    申请日：2023-04-14

    申请人： Tamron Co., Ltd.

    发明人： Naoki YAMASHITA ,  Akira ONODA ,  Toshiya SEGAWA

    IPC分类号： A61B1/04 ,  A61B1/06 ,  G06T5/50

    CPC分类号： A61B1/043 ,  A61B1/0638 ,  G06T5/50

    摘要： An image forming apparatus includes a light source that irradiates an observation target with excitation light; an imaging part that separately receives short wavelength-side NIR light and SWIR light from the observation target; and an image processing unit that generates a composite image having both a density of a short wavelength-side NIR light image and a definition of an SWIR light image.

    CARIES DETECTION DEVICE
    65.
    发明公开
    CARIES DETECTION DEVICE 审中-公开

    公开(公告)号：US20230200660A1

    公开(公告)日：2023-06-29

    申请号：US18074093

    申请日：2022-12-02

    申请人： TAMRON CO., LTD.

    发明人： Atsushi SAYAMA

    IPC分类号： A61B5/00 ,  G01N21/65

    CPC分类号： A61B5/0088 ,  G01N21/65

    摘要： A caries detection device includes: a screening optical system that irradiates a tooth with a near-infrared ray from a light source to detect transmitted light through the tooth; and a Raman scattered light detection optical system that irradiates a caries candidate area of the tooth detected from information of the transmitted light with a near-infrared ray from the light source to detect Raman scattered light generated from the caries candidate area.

    CONDENSING OBJECTIVE OPTICAL SYSTEM AND PHOTOACOUSTIC DEVICE
    67.
    发明申请
    CONDENSING OBJECTIVE OPTICAL SYSTEM AND PHOTOACOUSTIC DEVICE 有权

    公开(公告)号：US20220163789A1

    公开(公告)日：2022-05-26

    申请号：US17499419

    申请日：2021-10-12

    申请人： TAMRON CO., LTD.

    发明人： Shingo FUSE ,  Shunya FUKUI

    IPC分类号： G02B26/08 ,  G02B9/10 ,  A61B5/00

    摘要： A condensing objective optical system includes a first lens group having negative refractive power, a second lens group being a focus group having positive refractive power, and a photoacoustic element disposed closest to an object in this order. The photoacoustic element reflects an optical wave from the second lens group toward an object to transmit a photoacoustic wave from the object side. The condensing objective optical system satisfies a specific conditional expression that defines the conditions of the included lens and the condition regarding focusing.