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    IMAGING OPTICAL SYSTEM, AND PROJECTION-TYPE IMAGE DISPLAY APPARATUS AND IMAGE PICKUP APPARATUS USING THE SAME
    101.
    发明公开
    IMAGING OPTICAL SYSTEM, AND PROJECTION-TYPE IMAGE DISPLAY APPARATUS AND IMAGE PICKUP APPARATUS USING THE SAME 审中-公开

    公开(公告)号：EP3686641A1

    公开(公告)日：2020-07-29

    申请号：EP20153803.0

    申请日：2013-07-31

    申请人： CANON KABUSHIKI KAISHA

    发明人： INOKO, Kazuhiro

    IPC分类号： G02B13/06 ,  G02B13/22 ,  G09G5/10 ,  G02B3/00

    摘要： Imaging optical system including a first optical unit (1) having positive refractive power for making an image at the enlargement-side of the imaging optical system and an intermediate image (3) conjugate to each other, and a second optical unit (2) having positive refractive power for making the intermediate image (3) and the image plane (5) at the reduction-side of the imaging optical system conjugate to each other, wherein when the focal length of the first optical unit (1) is denoted fF and the focal length of the second optical unit (2) is denoted fR, the inequalities 0

    VARIABLE FOCAL LENGTH LENS APPARATUS
    103.
    发明公开
    VARIABLE FOCAL LENGTH LENS APPARATUS 审中-公开

    公开(公告)号：EP3474065A1

    公开(公告)日：2019-04-24

    申请号：EP18200765.8

    申请日：2018-10-16

    申请人： Mitutoyo Corporation

    发明人： Nagahama, Tatsuya ,  Kubo, Koji ,  Shishido, Yuko ,  Okayasu, Masaki ,  Usami, Atsushi

    IPC分类号： G02F1/11 ,  G02F1/33 ,  G02B13/22 ,  G02B3/14

    摘要： A variable focal length lens apparatus (1) includes an objective lens (11) and an imaging lens (12) that are aligned on the same optical axis (A); a front side lens system (21) and a rear side lens system (22) that are disposed in a section between the objective lens and the imaging lens on the optical axis, and change a refractive index in accordance with an input drive signal; and a diaphragm (23) disposed in the section between the front side lens system and the rear side lens system on the optical axis.

    IMAGING LENS AND IMAGING DEVICE
    104.
    发明授权
    IMAGING LENS AND IMAGING DEVICE 有权

    公开(公告)号：EP2657742B1

    公开(公告)日：2018-10-24

    申请号：EP11850589.0

    申请日：2011-12-20

    申请人： FUJIFILM Corporation

    发明人： ASAMI, Taro

    IPC分类号： G02B13/04 ,  G02B13/18 ,  G02B13/22 ,  G02B13/00 ,  G02B9/60

    CPC分类号： G02B13/22 ,  G02B9/60 ,  G02B13/0045 ,  G02B13/04

    摘要： [Aim] To achieve small size, low cost, high telecentricity, long back focus, a small F-number and high performance in an imaging lens. [Solution Means] An imaging lens (1) includes a negative first lens (L1) having a concave object-side surface, a positive second lens (L2), a negative third lens (L3), a positive fourth lens (L4) having a convex object-side surface, and a positive fifth lens (L5), which are in this order from an object side. A stop is arranged between an image-side surface of the first lens (L1) and an object-side surface of the third lens (L3). When the focal length of an entire system is f, and the focal length of the first lens (L1) is f1, the following formula is satisfied:

    TELECENTRIC LENS
    105.
    发明授权
    TELECENTRIC LENS 有权
    远摄镜头

    公开(公告)号：EP3074720B1

    公开(公告)日：2017-08-23

    申请号：EP14798949.5

    申请日：2014-09-29

    申请人： Sedazzari, Claudio

    发明人： Sedazzari, Claudio

    IPC分类号： G01B11/02 ,  G02B13/22

    CPC分类号： G02B13/22 ,  G01B11/02

    摘要： A telecentric lens (100) comprises a front optical group (112) adapted to receive the rays coming from an object observed and a rear optical group (114) adapted to convey said rays towards a sensor (30). At least one between the front optical group (112) and the rear optical group (114) consists of only two positive focal lenses (112; 114′). An artificial vision device (1) comprises the telecentric lens (100) and a lighting device (20) having a paraboloidal semi-reflector element (22).

    摘要翻译： 远心透镜（100）包括适于接收来自观察对象的光线的前光学组（112）和适于朝向传感器（30）传送所述光线的后光学组（114）。 前光学组件（112）和后光学组件（114）之间的至少一个仅由两个正焦透镜（112; 114'）组成。 一种人造视觉装置（1）包括远心透镜（100）和具有抛物面半反射器元件（22）的照明装置（20）。

    PROJECTION LENS
    106.
    发明公开
    PROJECTION LENS 有权
    PROJEKTIONSLINSE

    公开(公告)号：EP3026477A4

    公开(公告)日：2017-05-31

    申请号：EP15766037

    申请日：2015-01-30

    申请人： ZHEJIANG SUNNY OPTICS CO LTD

    发明人： HUANG LIN ,  DAI FUJIAN

    IPC分类号： G02B13/00 ,  G02B9/34 ,  G02B13/16 ,  G02B13/18 ,  G02B13/22 ,  G06F3/01 ,  G06F3/03 ,  G06F3/0488 ,  G06K9/00

    CPC分类号： G02B13/0065 ,  G02B9/34 ,  G02B13/004 ,  G02B13/008 ,  G02B13/16 ,  G02B13/18 ,  G02B13/22 ,  G06F3/017 ,  G06F3/0304 ,  G06F3/04883

    摘要： Provided is a projection lens including a first lens, a reflective optical device, a second lens, a third lens and a fourth lens from an image side to an object side in turn. The first lens is of a negative focal power, an image side of the first lens is of a convexity, an object side of the first lens is of a concavity; the reflective optical device enables light to be bended; the second lens is of a positive focal power, an object side of the second lens is of a convexity; the third lens is of a positive focal power, an image side of the third lens is of a convexity, an object side of the third lens is of a concavity; and the fourth lens is of a positive focal power. A diaphragm is arranged between first lens and second lens, meeting 0.25

    摘要翻译： 本发明提供一种投影镜头，其依次包括从像侧到物侧的第一透镜，反射光学装置，第二透镜，第三透镜​​和第四透镜。 第一透镜为负光焦度，第一透镜的像侧为凸面，第一透镜的物侧为凹面， 反射光学装置能够使光弯曲; 第二透镜为正光焦度，第二透镜的物侧为凸面， 第三透镜为正光焦度，第三透镜​​的像侧为凸面，第三透镜​​的物侧为凹面， 并且第四透镜具有正焦点光焦度。 在第一透镜和第二透镜之间布置光圈，满足0.25