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268 条记录 (耗时 0.021 秒)

    PROJECTION APPARATUS USING TELECENTRIC OPTICS
    111.
    发明公开
    PROJECTION APPARATUS USING TELECENTRIC OPTICS 有权
    与Tele CENTRIC光学投影设备

    公开(公告)号：EP2776882A1

    公开(公告)日：2014-09-17

    申请号：EP12748682.7

    申请日：2012-08-15

    申请人： Lemoptix SA

    发明人： KILCHER, Lucio ,  ABELÉ, Nicolas

    IPC分类号： G02B13/22 ,  G02B27/01

    CPC分类号： G02B27/0101 ,  G02B5/02 ,  G02B13/22 ,  G02B27/48 ,  G02B2027/0118 ,  G02B2027/013

    摘要： The present invention provides a projection system (10), preferably for a head-up display e.g. on board a vehicle, comprising a laser source (1), a diffuser (3) and telecentric optics (2) disposed between the laser and the diffuser so that the telecentric optics outputs parallel rays to the diffuser, the diffused light being thus independent from the incidence angle; each pixel of the projected image has the same brightness, regardless of the angle or of the position from which it is viewed.

    FLAT FIELD TELECENTRIC SCANNER WITH DIFFRACTION LIMITED PERFORMANCE
    112.
    发明公开
    FLAT FIELD TELECENTRIC SCANNER WITH DIFFRACTION LIMITED PERFORMANCE 有权
    具有扩限电TELE CENTRIC平板扫描仪

    公开(公告)号：EP2691803A1

    公开(公告)日：2014-02-05

    申请号：EP12711874.3

    申请日：2012-03-30

    申请人： Next Scan Technology BV

    发明人： DE LOOR, Ronny

    IPC分类号： G02B13/00 ,  G02B13/22 ,  G02B26/12

    CPC分类号： G02B26/10 ,  G02B13/0005 ,  G02B13/22 ,  G02B26/126

    摘要： The present invention provides a scanning system (100) comprising a first port for receiving or emitting a stationary beam (60) of electromagnetic radiation, a second port for emitting or receiving a scanning beam of electromagnetic radiation, the scanning beam scanning in a main scanning direction, a scanning element (61) for relaying the stationary beam (60) into the scanning beam or vice versa, an optical system between the scanning element (61) and the second port, wherein the optical system comprises at least a first mirror (63) and a second mirror (64) having a rotationally symmetric curved mirror surface around their optical axis, at least one of the first and the second curved mirror surface having an aspheric shape, and wherein the first and the second mirror (63, 64) have an off-axis decentered aperture and are offset in position in a direction perpendicular to the main scanning direction.

    Compact imaging lens having four single lenses
    116.
    发明公开
    Compact imaging lens having four single lenses 有权
    Kompaktes Objektiv mit vier Einzellinsen

    公开(公告)号：EP2437093A1

    公开(公告)日：2012-04-04

    申请号：EP11178254.6

    申请日：2011-08-22

    申请人： Sony Corporation

    发明人： Takei, Shoji

    IPC分类号： G02B13/00 ,  G02B9/16 ,  G02B13/22

    CPC分类号： G02B13/004 ,  G02B9/16 ,  G02B13/22

    摘要： An imaging lens includes an aperture stop, a first lens having positive refractive power, a second lens having negative refractive power, a third lens having positive refractive power, and a fourth lens having negative refractive power. Both surfaces of the first lens, both surfaces of the second lens, both surfaces of the third lens, and both surfaces of the fourth lens are formed as aspheric surfaces. The following condition expression (1), condition expression (2), and condition expression (3) are satisfied. - 1.09 ≤ f ⁢ 2 / f ≤ - 0.81 - 1.62 ≤ f ⁢ 2 / f ⁢ 1 ≤ - 1.42 0.65 ≤ f ⁢ 3 / f ≤ 0.97
    in which
    f1: the focal length of the first lens
    f2: the focal length of the second lens
    f3: the focal length of the third lens
    f: the focal length of the lens whole system

    摘要翻译： 成像透镜包括孔径光阑，具有正屈光力的第一透镜，具有负屈光力的第二透镜，具有正屈光力的第三透镜和具有负屈光力的第四透镜。 第一透镜的两个表面，第二透镜的两个表面，第三透镜​​的两个表面和第四透镜的两个表面都形成为非球面。 满足以下条件表达式（1），条件表达式（2）和条件表达式（3）。 - 1.09‰¤¢¢2 / f‰ - 0.81 - 1.62‰¤f ¢2 / f ¢1‰¤ - 1.42 0.65‰¤f ¢3 / f‰¤0.97其中f1：焦距 第一透镜f2的焦距：第二透镜的焦距f3：第三透镜的焦距f：透镜整体系统的焦距

    Zoom lens of the retrofocus type and having five lens groups
    117.
    发明公开
    Zoom lens of the retrofocus type and having five lens groups 有权
    Retrofokus Zoom Objektiv mitfünfLinsengruppen

    公开(公告)号：EP2378336A1

    公开(公告)日：2011-10-19

    申请号：EP11005734.6

    申请日：2009-01-27

    申请人： Canon Kabushiki Kaisha

    发明人： Inoko, Kazuhiro

    IPC分类号： G02B15/177 ,  G02B13/22

    CPC分类号： G02B15/177 ,  G02B13/22

    摘要： A zoom lens comprises, in order from an enlargement conjugate side to a reduction conjugate side: a first lens unit (L1) of negative refractive power; a second lens unit (L2) of positive refractive power; a third lens unit (L3) of positive refractive power; a middle lens unit (LM) including at least one lens unit; and a last lens unit (LR) of positive refractive power. All the lens units, except the first lens unit and the last lens unit, move during zooming.
    The third lens unit has at least three lens elements, and the following conditions are satisfied: f ⁢ 3 / fw > 4.0 f ⁢ 3 / f ⁢ 2 > 2.0 fw / Bf 0.52 where f2 is a focal length of the second lens unit, f3 is a focal length of the third lens unit, fw is a focal length of the entire zoom lens at a wide-angle end, and Bf is an air-conversion length of back-focus.

    摘要翻译： 变焦透镜从放大共轭侧到缩小共轭侧的顺序包括：负折射力的第一透镜单元（L1） 具有正屈光力的第二透镜单元（L2）; 具有正屈光力的第三透镜单元（L3）; 包括至少一个透镜单元的中间透镜单元（LM）; 以及具有正屈光力的最后一个透镜单元（LR）。 所有的镜头单元，除了第一个镜头单元和最后一个镜头单元，在变焦期间移动。 第三透镜单元具有至少三个透镜元件，满足以下条件：f ¢3 / fw> 4.0 f ¢3 / f ¢2> 2.0 fw / Bf <0.52其中f2是 第二透镜单元，f3是第三透镜单元的焦距，fw是整个变焦透镜在广角端的焦距，Bf是后焦点的空气转换长度。

    Retrofocus Objective Lens System with four lenses and Imaging Apparatus
    118.
    发明公开
    Retrofocus Objective Lens System with four lenses and Imaging Apparatus 有权
    Vierlinsiges Retrofokusobjektiv und Abbildungsvorrichtung

    公开(公告)号：EP2336815A1

    公开(公告)日：2011-06-22

    申请号：EP10193348.9

    申请日：2010-12-01

    申请人： Ricoh Company Ltd.

    发明人： Kubota, Takashi

    IPC分类号： G02B9/34 ,  G02B13/00 ,  G02B13/04 ,  G02B13/22

    CPC分类号： G02B13/04 ,  G02B9/34 ,  G02B13/001 ,  G02B13/22

    摘要： An imaging lens system includes three lens groups having four lenses including a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4) arranged in order from an object side, and an aperture stop (S) arranged between the first lens (L1) and the second lens (L2). The second lens (L2) and the third lens (L3) are joined each other. The first lens (L1) is a negative meniscus lens having, a convex surface at an object side, The second lens (L2) is a positive lens having a convex surface having a large curvature at an image side. The third lens (L3) is a negative lens having a concave surface having a large curvature at an object side. The fourth lens (L4) is a positive lens having a convex surface having a large curvature at an image side. The following conditions are satisfied: 1.4 f ⁢ 1 / F 2.2 0.4 f ⁢ 1 / f ⁢ 23 1.6
    where F is a focal length of the entire imaging lens system, f1 is a focal length of the first lens (L1), and f23 is a combined focal length of the second lens (L2) and the third lens (L3) which are joined each other. The following condition is satisfied: 1.80 N ⁢ 1
    where N1 is a refractive index of material of the first lens (L)1 for a d line.

    摘要翻译： 一种成像透镜系统包括具有四个透镜的三个透镜组，所述透镜包括从物体侧依次布置的第一透镜（L1），第二透镜（L2），第三透镜​​（L3）和第四透镜（L4） 布置在第一透镜（L1）和第二透镜（L2）之间的孔径光阑（S）。 第二透镜（L2）和第三透镜（L3）彼此连接。 第一透镜（L1）是具有物体侧的凸面的负弯月形透镜。第二透镜（L2）是具有在像侧具有大曲率的凸面的正透镜。 第三透镜（L3）是具有在物体侧具有大曲率的凹面的负透镜。 第四透镜（L4）是在像侧具有大曲率的凸面的正透镜。 满足以下条件：1.4

    Wide-angle projection lens and portable display device for gaming and other applications
    119.
    发明公开
    Wide-angle projection lens and portable display device for gaming and other applications 审中-公开
    广角投影透镜系统和便携式显示装置用于游戏机和其他应用程序

    公开(公告)号：EP2251740A1

    公开(公告)日：2010-11-17

    申请号：EP10169594.8

    申请日：2007-01-30

    申请人： 3M Innovative Properties Co.

    发明人： Lu, Kai Chang ,  Hughes, Patricia, M

    IPC分类号： G03B21/10 ,  G02B13/18 ,  G02B13/06 ,  H04N9/31 ,  H04N5/64 ,  G02B13/22

    CPC分类号： G02B13/06 ,  G02B13/22 ,  G03B21/147

    摘要： The present invention relates to an optical projector comprising (a) an illumination system, (b) an imaging system, and (c) a projection lens having a back focal length lower than about 1.4 times the effective focal length and a speed lower than or equal to F/3.1, and wherein the projection lens generates an image at a half field angle of at least 50° that has substantially no distortion.

    摘要翻译： 本发明涉及一种在光学投影仪包括：（A）照明系统，（b）至成像系统，和（c）的具有背焦距比有效焦距的约1.4倍以下，较低的速度或投影透镜 等于F / 3.1，并且worin基因在至少50°的半视场角费率的图像没有基本上没有失真的投影透镜。