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131.发明申请公开(公告)号：US20210307607A1
公开(公告)日：2021-10-07
申请号：US17099037
申请日：2020-11-16
Applicant: TAMRON CO., LTD.
Inventor： Kodai YAMANE
Abstract: An optical system for observing reflected light from a fundus includes: an irradiation unit for irradiating an eye with light exited from a light source; a light-acceptance unit for accepting reflected light reflected on a fundus of the eye; and a polarization control unit for making light irradiated to the eye z-polarization axisymmetric with respect to an optical axis and blocking the z-polarization of reflected light reflected on the eye and directed to the light-acceptance unit.
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公开(公告)号：US20210199939A1
公开(公告)日：2021-07-01
申请号：US16992512
申请日：2020-08-13
Applicant: TAMRON CO., LTD.
Inventor： Hirofumi TABATA , Takahiro MITSUHASHI , Toshiya SEGAWA
Abstract: A zoom lens includes, in order from an object side, a first lens group that is positive, a second lens group that is negative, a third lens group that is positive, and a fourth lens group that is positive. During zooming from a wide angle end to a telephoto end, at least the first lens group and the third lens group are fixed and an interval on an optical axis of an adjacent lens group relative thereto is changed. In the zoom lens, the fourth lens group includes at least one positive lens and satisfies a predetermined conditional expression. In addition, an imaging device includes the zoom lens and an image sensor.
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公开(公告)号：US11022789B2
公开(公告)日：2021-06-01
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：US10976530B2
公开(公告)日：2021-04-13
申请号：US15844881
申请日：2017-12-18
Applicant: Tamron Co., Ltd.
Inventor： Yoshito Iwasawa , Kazuya Watanabe , Wataru Kusaka
IPC: G02B15/173 , G02B15/14 , G02B27/00 , G02B13/02
Abstract: The present invention provides a zoom lens which is the zoom lens that includes a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, and a third lens group G3 having positive refractive power in order from an object side, and changes focal length by changing an air interval between the respective lens groups, the zoom lens including a focus group F constituted from one lens in or after the third lens group G3, moving only the focus group F along an optical axis direction when focusing from an infinity object to a proximity object, and satisfying specific conditional expressions, and an imaging apparatus including the zoom lens.
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公开(公告)号：US20200341247A1
公开(公告)日：2020-10-29
申请号：US16687989
申请日：2019-11-19
Applicant: TAMRON CO., LTD.
Inventor： Junichi Yamazoe , Koutarou Joujiki
Abstract: An imaging lens and an imaging device furnished with same, including a first lens group having a positive refractive power, a second lens group having a positive refractive power, and a third lens group having a negative refractive power, disposed in sequence from the object side, wherein zooming from a point at infinity to an object at the near point is performed by moving the second lens group along an optical axis toward the object side while affixing the first lens group and third lens group, and satisfying predetermined conditional expressions.
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Patent Agency Ranking
公开(公告)号：US20200271896A1
公开(公告)日：2020-08-27
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：US20190242984A1
公开(公告)日：2019-08-08
申请号：US16222200
申请日：2018-12-17
Applicant: Tamron Co., Ltd.
Inventor： Kodai Yamane
CPC classification number: G01S7/4876 , G01S7/483 , G01S17/10 , G03B7/00 , H04N5/211
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：US20190235210A1
公开(公告)日：2019-08-01
申请号：US16140762
申请日：2018-09-25
Applicant: TAMRON CO., LTD.
Inventor： Seigo NAKAI , Yasuhiko OBIKANE
Abstract: An imaging lens according to the present invention includes a negative first lens, a meniscus-shaped negative second lens having a concave surface facing to an object side, a positive third lens, a positive fourth lens having a convex surface on the object side, a positive fifth lens, a negative sixth lens, and a positive seventh lens arranged in order from the object side. Furthermore, an imaging device according to the present invention includes the imaging lens.
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公开(公告)号：US20190018221A1
公开(公告)日：2019-01-17
申请号：US15937023
申请日：2018-03-27
Applicant: Tamron Co., Ltd.
Inventor： Junichi Yamazoe
Abstract: A zoom lens including, in order from an object side, a positive first lens group G1, a negative second lens group G2, a composite positive lens group which includes, at the most object side, a positive third lens group G3, which is consisting of one or more lens groups having positive refractive power, and which has positive refractive power as a whole, and a composite negative lens group which includes, at the most object side, a negative A lens group, which additionally includes at least a negative B lens group, and which has negative refractive power as a whole. In the zoom lens, changing focal length is performed by varying the distances between the lens groups, and a predetermined condition is satisfied.
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公开(公告)号：US09733397B2
公开(公告)日：2017-08-15
申请号：US13727023
申请日：2012-12-26
Applicant: Tamron Co., Ltd.
Inventor： Minoru Shibuya , Naoki Yamashita
CPC classification number: G02B1/111 , B82Y20/00 , Y10S977/755
Abstract: An anti-reflection coat includes an intermediate layer and a low refractive index layer sequentially stacked on a substrate, and preventing the reflection of incident light by optical interference effect, wherein the low refractive index layer is a film formed on the surface of the intermediate layer by a wet film formation method using a coating liquid including layer-constituting raw materials which includes hollow silica particles adhering each other with a binder, and the intermediate layer is a layer mainly composed of an organometallic compound which adheres well to the binder and having wettability to the coating liquid; and provides an optical device including the anti-reflection coat.
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