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公开(公告)号：US11353564B2
公开(公告)日：2022-06-07
申请号：US16222200
申请日：2018-12-17
Applicant: Tamron Co., Ltd.
Inventor： Kodai Yamane
Abstract: Disclosed are a disturbance light identifying apparatus, a disturbance light separating apparatus, a disturbance light identifying method, and a disturbance light separating method capable of precisely identifying whether or not light exiting an optical system contains a disturbance light component or capable of separating such a disturbance light component by using a simple technique. Provided are: a modulated light irradiation unit that irradiates an optical system 1 with modulated light; a light receiving unit that receives light exiting the optical system 1 in response to an incidence of the modulated light from the modulated light irradiation unit; and a controlling unit that controls the modulated light irradiation unit and the light receiving unit.
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公开(公告)号：US11199682B2
公开(公告)日：2021-12-14
申请号：US16594643
申请日：2019-10-07
Applicant: TAMRON CO., LTD.
Inventor： Takayuki Noda , Yasuhiko Obikane
Abstract: An imaging optical system includes, in order from an object side, a first lens having negative refractive power, a second lens having positive refractive power, a third lens having positive refractive power, a fourth lens and a fifth lens, with the fourth lens and the fifth lens not cemented, in which a predetermined conditional expressions is satisfied.
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公开(公告)号：US20210384971A1
公开(公告)日：2021-12-09
申请号：US17194912
申请日：2021-03-08
Applicant: TAMRON CO., LTD.
Inventor： Yusuke HASHIMOTO , Nobuyuki ADACHI , Koji KAWAGUCHI , Hirofumi MOCHIZUKI , Keijiro ABE , Yuichi IMAMIYA , Hironori TAGUCHI
IPC: H04B10/112 , G02B15/00
Abstract: A communication device includes a zoom lens that collects signal light.
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公开(公告)号：US20210333525A1
公开(公告)日：2021-10-28
申请号：US17098948
申请日：2020-11-16
Applicant: TAMRON CO., LTD.
Inventor： Takahiro MITSUHASHI
Abstract: A zoom lens includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a rear group having a positive refractive power as a whole in order from an object side. The zoom lens has specific optical characteristics indicated by two expressions.
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公开(公告)号：US11143852B2
公开(公告)日：2021-10-12
申请号：US16555273
申请日：2019-08-29
Applicant: TAMRON CO., LTD.
Inventor： Hisayuki Yamanaka
IPC: G02B15/14 , G02B15/173 , G02B13/18 , G02B13/00 , G02B15/20 , G02B27/00 , G02B13/06 , H04N5/232 , H04N5/335 , G02B7/10 , G02B5/00
Abstract: To attain the above-described objective, a zoom lens according to the present invention includes sequentially from an object side, a front group which includes at least three lens groups and has positive refractive power as a whole, and a lens group disposed on an image side of the front group, a magnification is changed by a change of a distance on an optical axis between adjacent lens groups, the lens group includes sequentially from an image side, a lens component, a lens component, and a lens component, the lens group is moved to an object side at a time of changing a magnification from a wide-angle end to a telephoto end, focusing is obtained by movement of a part of lens groups in the front group along an optical axis, and a predetermined condition expression is satisfied.
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Patent Agency Ranking
公开(公告)号：US20200285041A1
公开(公告)日：2020-09-10
申请号：US16553940
申请日：2019-08-28
Applicant: TAMRON CO., LTD.
Inventor： Yasuhiko OBIKANE , Yoshito IWASAWA , Yuichi IMAMIYA , Yuri KOYAMA
Abstract: An observation imaging apparatus includes an insertion unit, an imaging lens, and an image sensor. The imaging lens is disposed in such a manner that an axial principal ray of an observation subject side surface of a lens is tilted with respect to a normal line passing through the center of gravity of a section of the insertion unit, the section passing through the center of an effective imaging range of the image sensor and having the smallest area. A point on the axial principal ray at which the distance between the normal line and the axial principal ray is smallest is located on the image side relative to the observation subject side surface of the lens and on the observation subject side relative to the image sensor. The observation imaging apparatus satisfies a predetermined conditional expression.
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公开(公告)号：US10721398B2
公开(公告)日：2020-07-21
申请号：US15838787
申请日：2017-12-12
Applicant: Tamron Co., Ltd.
Inventor： Koutarou Joujiki , Yasuhiko Obikane
Abstract: An imaging optical system according to the present invention is the imaging optical system composed by arranging a front group, a stop, and a rear group in order from an object side, a lens arranged closest to the stop in the front group is a positive lens, a lens arranged closest to the stop in the rear group is also a positive lens, and specific conditional expressions are satisfied. In addition, an imaging apparatus according to the present invention includes the imaging optical system.
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公开(公告)号：US20200209598A1
公开(公告)日：2020-07-02
申请号：US16552431
申请日：2019-08-27
Applicant: TAMRON CO., LTD.
Inventor： Masaki SATO
IPC: G02B15/14
Abstract: Provided is an optical system and an imaging apparatus provided with the optical system. The optical system includes: a first lens having negative refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth lens having positive refractive power, the first lens, the second lens, the third lens, and the fourth lens being disposed in this order from an object side. The optical system satisfies a predetermined condition relating to the focal length of the optical system and the distance on the optical axis between an exit pupil and an imaging plane in the optical system.
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公开(公告)号：US20190302432A1
公开(公告)日：2019-10-03
申请号：US16222268
申请日：2018-12-17
Applicant: Tamron Co., Ltd.
Inventor： Yoshito Iwasawa , Hisayuki Yamanaka , Keisuke Okada , Junichi Yamazoe
IPC: G02B15/177 , G02B27/64 , G02B13/18 , G02B13/02
Abstract: A zoom lens including a front group and a rear group, wherein a lens group arranged on an object side of a widest air interval at a wide-angle end is defined as the front group and a lens group arranged on an image side of the widest air interval at the wide-angle end is defined as the rear group, the front group having a negative refractive power, the rear group having a positive refractive power. Changing focal length from the wide-angle end to the telephoto end is performed by changing an air interval between the lens groups.
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公开(公告)号：US20190049707A1
公开(公告)日：2019-02-14
申请号：US15962427
申请日：2018-04-25
Applicant: Tamron Co., Ltd.
Inventor： Keisuke Okada
Abstract: The present invention provides a zoom lens that can perform favorable correction of chromatic aberration in the entire zoom range, and can have higher performance and a smaller size than conventional ones; and an imaging apparatus including the zoom lens. To achieve the object, provided are a zoom lens and an imaging apparatus including the zoom lens. The zoom lens includes, in order from an object side: a positive first lens group G1; a negative second lens group G2; and a GR group including one or more lens groups. In the zoom lens, changing focal length is performed by varying intervals between the lens groups. The GR group has at least two cemented surfaces having negative refractive power, convex lenses GpH and GpL satisfying predetermined conditional expressions. An aperture stop is arranged in the first lens group or after. The zoom lens satisfies predetermined conditional expressions.
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