公开(公告)号：US11841486B2

公开(公告)日：2023-12-12

申请号：US17155283

申请日：2021-01-22

Applicant: FUJIFILM Corporation

Inventor： Daiki Kawamura ,  Michio Cho

IPC: G02B15/14 ,  G02B27/00 ,  G02B15/20

CPC classification number: G02B15/1421 ,  G02B15/20 ,  G02B27/0025

Abstract: An imaging lens includes a positive first lens group and a second lens group, which are continuous in order from the position closest to the object side, as lens groups. During focusing, the distance between the first lens group and the second lens group changes. A stop is disposed closer to the image side than a lens which is second from the object side. A combined refractive power of all lenses closer to the object side than the stop is positive. The imaging lens includes an LA positive lens and an LB positive lens that satisfy a predetermined conditional expression at a position closer to the object side than the stop. An Abbe number of the LB positive lens is the maximum among Abbe numbers of all positive lenses closer to the object side than the stop.

公开(公告)号：US20230375818A1

公开(公告)日：2023-11-23

申请号：US18030398

申请日：2021-10-07

Applicant: NIKON CORPORATION

Inventor： Kyoya TOKUNAGA ,  Kei TOMIMATSU ,  Katsuya WATANABE

IPC: G02B21/02 ,  G02B15/14 ,  G02B13/00 ,  G02B21/36

CPC classification number: G02B21/025 ,  G02B15/1421 ,  G02B13/006 ,  G02B21/361

Abstract: An infinity-corrected microscope objective lens has, arranged in order from the object side along an optical axis, a first lens group having a positive refractive power, and a second lens group having a positive refractive power, an intermediate image forming plane in which light from an object forms an image being positioned between the first lens group and the second lens group, and the microscope objective lens satisfying the condition below. −0.2

公开(公告)号：US11656445B2

公开(公告)日：2023-05-23

申请号：US17121128

申请日：2020-12-14

Applicant: Zhejiang Sunny Optics Co., Ltd

Inventor： Fujian Dai ,  Kaiyuan Zhang ,  Liefeng Zhao

IPC: G02B17/02 ,  G02B13/02 ,  G02B17/00 ,  G02B15/14 ,  G02B13/00 ,  G02B17/08

CPC classification number: G02B17/004 ,  G02B13/0045 ,  G02B13/0065 ,  G02B15/1421 ,  G02B15/1461 ,  G02B17/0896

Abstract: The present disclosure discloses a telephoto optical imaging system and zoom camera apparatus. The telephoto optical imaging system includes, sequentially from an object side to an image side along an optical axis, a first lens having positive refractive power, a second lens having negative refractive power, an optical path turning prism, and a triangular prism. A total effective focal length F1 of the telephoto optical imaging system may satisfy F1>40 mm. The zoom camera apparatus includes the telephoto optical imaging system and a short-focus optical imaging system arranged in parallel with the telephoto optical imaging system. A total effective focal length F1 of the telephoto optical imaging system and a total effective focal length F2 of the short-focus optical imaging system satisfy F1/F2>5.

公开(公告)号：US20240210665A1

公开(公告)日：2024-06-27

申请号：US18575452

申请日：2022-06-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kaiyuan Zhang ,  Liuchang Xiao ,  Rongkai Feng

IPC: G02B15/14 ,  H04N23/55

CPC classification number: G02B15/1421 ,  H04N23/55

Abstract: A zoom lens, a camera module, and a mobile terminal are provided. The zoom lens includes a first lens group (G1) and a second lens group (G2) that are arranged from an object side to an image side, where the first lens group (G1) is fixed, and the second lens group (G2) is capable of sliding along a direction of an optical axis; the first lens group (G1) has a positive focal power; the second lens group (G2) has a negative focal power; a ratio of a focal length EFLG1 of the first lens group (G1) to a focal length EFLG2 of the second lens group (G2) satisfies 0.4

公开(公告)号：US11835790B2

公开(公告)日：2023-12-05

申请号：US16988086

申请日：2020-08-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasuaki Hagiwara

IPC: G02B9/06 ,  G02B9/12 ,  G02B3/04 ,  G02B15/14

CPC classification number: G02B9/06 ,  G02B3/04 ,  G02B9/12 ,  G02B15/1421

Abstract: An optical system includes, in order from an object side to an image side, a first lens unit having a positive refractive power, and a second lens unit having a positive refractive power. An interval between the first lens unit and the second lens unit changes during focusing. The second lens unit includes, in order from the object side to the image side, a first subunit having a positive refractive power, an aperture stop, and a second subunit having a positive refractive power. A predetermined condition is satisfied.

公开(公告)号：US20230251474A1

公开(公告)日：2023-08-10

申请号：US18134092

申请日：2023-04-13

Applicant: Zhejiang Sunny Optical Co., Ltd

Inventor： Fujian Dai ,  Kaiyuan Zhang ,  Liefeng Zhao

IPC: G02B17/00 ,  G02B15/14 ,  G02B13/00 ,  G02B17/08

CPC classification number: G02B17/004 ,  G02B15/1421 ,  G02B15/1461 ,  G02B13/0045 ,  G02B13/0065 ,  G02B17/0896

Abstract: A telephoto optical imaging system and zoom camera apparatus. The telephoto optical imaging system includes, sequentially from an object side to an image side along an optical axis, a first lens having positive refractive power, a second lens having negative refractive power, an optical path turning prism, and a triangular prism. Distance T from the object-side surface of the first lens to an imaging plane of the telephoto optical imaging system in a normal direction of the imaging plane and the total effective focal length F1 of the telephoto optical imaging system satisfy T/F1 5.

公开(公告)号：US20230185064A1

公开(公告)日：2023-06-15

申请号：US18076299

申请日：2022-12-06

Applicant: Fathom Radiant, PBC

Inventor： Kaia Williams ,  Benjamin Braker ,  Omer Tzang ,  Robert T. Weverka ,  Keith Behrman

IPC: G02B13/22 ,  G02B5/18 ,  H01S5/42 ,  H01S5/40 ,  H04B10/50 ,  G02B15/14

CPC classification number: G02B13/22 ,  G02B5/1876 ,  H01S5/423 ,  H01S5/4012 ,  H04B10/506 ,  G02B15/1421

Abstract: A compact bi-telecentric device includes refractive lenses and takes in light from a grid of emitters at the object plane and images them to a grid of receivers. It provides the capacity to combine multiple wavelengths of emitters at the object plane into a single receiver. The device is quite compact, less than 25 mm in length from object to image, and having a maximum diameter for any element of less than 4 mm. The device includes four optical lens elements, three of which have a positive focal length and one of which has a negative focal length. The device includes at least one diffractive optical element. The lens elements are separated into two distinct groups which each have positive optical power, separated by an aperture stop which may or may not be enabled by a physical surface. A diffractive element enables wavelength division multiplexing and compensates for distortion from the bi-telecentric device.

公开(公告)号：US12055697B2

公开(公告)日：2024-08-06

申请号：US17317848

申请日：2021-05-11

Applicant: ZHEJIANG SUNNY OPTICS CO.,LTD.

Inventor： Yabin Hu ,  Jian Zhang ,  Liefeng Zhao ,  Fujian Dai

IPC: G02B15/14 ,  G02B13/00 ,  G02B27/00

CPC classification number: G02B15/1421 ,  G02B13/0045 ,  G02B27/0025

Abstract: The disclosure provides a camera lens group, which sequentially includes, from an object side to an image side along an optical axis: a first lens group with a positive refractive power, sequentially including, along the optical axis, a first lens, a second lens and a third lens with refractive power respectively; and a second lens group with a negative refractive power, sequentially including, the optical axis, a fourth lens, a fifth lens, a sixth lens and a seventh lens with refractive power respectively, wherein a total effective focal length f of the camera lens group and an entrance pupil diameter (EPD) of the camera lens group meet f/EPD

公开(公告)号：US20240210664A1

公开(公告)日：2024-06-27

申请号：US18558167

申请日：2022-04-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yasuhide Nihei ,  Takumi Matsui ,  Kaiyuan Zhang ,  Liuchang Xiao ,  Rongkai Feng ,  YITA CHIANG

IPC: G02B15/14 ,  H04N23/55

CPC classification number: G02B15/1421 ,  H04N23/55

Abstract: This application provides an optical lens, a camera module, and an electronic device. The optical lens includes a first lens element group and a second lens element group. The first lens element group and the second lens element group each include a plurality of lens elements. In different use scenarios, the second lens element group can be moved to change a distance between the first lens element group and the second lens element group, to change a focal length of the optical lens. This ensures that the optical lens in this application can achieve a good shooting effect in different use scenarios. In this application, the second lens element group is disposed within a back focal length range of the first lens element group. In this way, a total track length of the optical lens in this application can be small, so that the optical lens can be used within a thin electronic device.

公开(公告)号：US11762188B2

公开(公告)日：2023-09-19

申请号：US17879261

申请日：2022-08-02

Applicant: Shenzhen NED Optics Co., Ltd

Inventor： Huajun Peng ,  Hongpeng Cao ,  Jianfei Guo

IPC: G02B25/00 ,  G02B15/14 ,  G02B9/12 ,  G02B17/08 ,  G02B27/01

CPC classification number: G02B25/001 ,  G02B9/12 ,  G02B15/1421 ,  G02B17/08 ,  G02B17/0896 ,  G02B27/0172 ,  G02B2027/013 ,  G02B2027/0123 ,  G02B2027/0127 ,  G02B2027/0132

Abstract: The present invention relates to a reflective eyepiece optical system and a head-mounted near-to-eye display device. The system includes: a first lens group, a first optical element and a second lens group for transmitting and reflecting light from a miniature image displayer; the second lens group includes an optical reflection surface, and the optical reflection surface is the optical surface farthest from a human eye viewing side in the second lens group; the optical reflection surface is concave to human eyes; the first optical element reflects the light refracted by the first lens group to the second lens group, and then transmits the light refracted, reflected and again refracted by the second lens group to the human eyes.