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    • 91. 发明申请
    • Imaging lens
    • 成像镜头
    • US20090284846A1
    • 2009-11-19
    • US12453298
    • 2009-05-06
    • Hiroyuki TeraokaJunji Kitamura
    • Hiroyuki TeraokaJunji Kitamura
    • G02B9/16
    • G02B13/0035G02B9/16
    • The present invention provides an imaging lens that includes, in order from an object, a diaphragm S1; a first lens L1 with a positive power and a meniscus shape that is convex toward an object side; a second lens L2 with a negative power and a meniscus shape that is convex toward an image side; and a third lens L3 with a positive power and a meniscus shape that is convex toward the object side; the imaging lens satisfying Conditional Expressions (1) to (3): 0.95
    • 本发明提供了一种成像透镜,其从物体依次包括光阑S1; 具有朝向物体侧凸起的正功率和弯月形状的第一透镜L1; 具有朝向图像侧凸起的负功率和弯月形状的第二透镜L2; 以及朝向物体侧凸出的正功率和弯液面形状的第三透镜L3; 满足条件表达式(1)至(3)的成像透镜:0.95f1 / f -0.50f1 / f2 0.40d1 / d2其中:f:整个透镜系统的焦距; f1:第一透镜的焦距; f2:第二透镜的焦距; d1:第一透镜的中心厚度; d2:第一透镜的图像侧表面和第二透镜的物体侧表面之间的距离。
    • 92. 发明申请
    • IMAGING LENS
    • 成像镜头
    • US20050270665A1
    • 2005-12-08
    • US10994092
    • 2004-11-22
    • Satoshi Do
    • Satoshi Do
    • G02B13/00G02B9/16G02B13/16G02B13/18G02B3/02G02B9/12G02B21/02
    • G02B9/16G02B13/0035G02B13/16
    • The present invention is an imaging lens in which various aberrations are favorably corrected, the optical length is short, and a sufficient back focus is secured. The imaging lens is constituted by arranging a first lens L1, an aperture diaphragm S1, a second lens L2, and a third lens L3 in succession from the object side to the image side. The first lens L1 is a lens having a positive refractive power and a meniscus shape in which the convex surface faces the object side, the second lens L2 is a lens having a negative refractive power and a meniscus shape in which the convex surface faces the image side, and the third lens L3 is a lens in which the convex surface faces the object side. The imaging lens satisfies the following conditions: 0.35
    • 本发明是一种成像透镜,其中各种像差被有利地校正,光学长度短,并且确保了足够的后焦点。 成像透镜由从物体侧到像侧依次配置第一透镜L 1,孔径光阑S1,第二透镜L 2和第三透镜L 3构成。 第一透镜L 1是具有正屈光力和凸面朝向物体侧的弯月形状的透镜,第二透镜L 2是具有负屈光力的透镜和凸面表面的弯月形状 图像侧和第三透镜L 3是凸面朝向物体侧的透镜。 成像透镜满足以下条件:0.35 <0.45(1)0.07 / f <0.1 2)0.01 / f <0.04(3)1.00 / f <0.5(5)其中f 是成像透镜的组合焦距,r 1是第一透镜L 1的物体侧表面在光轴附近的曲率半径(轴向曲率半径), 第二透镜L 1在光轴附近的图像侧表面的曲率半径(轴向曲率半径)为D 2 第一透镜L 1和第二透镜L 2之间的距离D 4是第二透镜L 2和第三透镜L 3之间的距离,d是距物体侧的距离(大气压) 第一透镜L 1的表面到成像表面,并且b 是从第三透镜的图像侧表面到成像表面的距离(大气)。
    • 95. 发明授权
    • Camera with triplet lenses
    • 三合一镜头相机
    • US5541692A
    • 1996-07-30
    • US492133
    • 1995-06-19
    • Kohei Ota
    • Kohei Ota
    • G02B9/16G02B9/14G02B13/18G03B1/18
    • G02B9/14
    • A camera provided with a triplet type lens for taking a photograph in which the first lens having a positive refracting power, the second lens having a negative refracting power and the third lens having a positive refracting power are arranged in that order from the photographic object side of the camera, and a diaphragm is located at the rear of the triplet type lens. In this camera, the longitudinal direction of the picture-taking image plane is curved onto the photographic object side, and the triplet type lens satisfy: 0.41.ltoreq.P.D.ltoreq.0.98 where P is the Petzval's Stun of the triplet type lens and D is the length of the diagonal line of the image plane.
    • 具有用于拍摄具有正折射率的第一透镜,具有负折射率的第二透镜和具有正折射力的第三透镜的三重态透镜的相机以从拍摄对象侧开始的顺序 的相机,并且隔膜位于三重型镜头的后部。 在该照相机中,拍摄像平面的纵向方向被弯曲到摄影对象侧,并且三重态透镜满足:0.41
    • 96. 发明授权
    • Photographic lens device
    • 摄影镜头装置
    • US4886342A
    • 1989-12-12
    • US355800
    • 1989-05-22
    • Yoshinobu KudoKiyohiro Yoshida
    • Yoshinobu KudoKiyohiro Yoshida
    • G02B7/02G02B9/16
    • G02B9/16G02B7/021
    • A photographing lens device wherein the optical axes of lenses can be aligned with a high degree of accuracy with a simple structure and at least a lens made of a plastic material can be secured to a lens barrel without causing a torsion thereof. The photographing lens device comprises first, second and third lenses arranged in this order from the object side. The second and third lenses have mutually contacting flat faces formed thereon outside effective light path regions therein, and the third lens is secured to the second lens at the flat faces of them by a bonding agent. The optical axis of the second and third lenses are aligned with each other by slipping the lenses along the flat faces thereof before adhesion. The second lens further has a contacting face formed outwardly of the flat face thereof and is pressed at the contacting face thereof against a face of a lens barrel while the first lens is pressed against the second lens by a pressing member coupled to the lens barrel.
    • 一种拍摄透镜装置,其中透镜的光轴可以以简单的结构以高精度对准,并且至少由塑料材料制成的透镜可以固定到透镜镜筒而不引起其扭转。 摄影镜头装置包括从物体侧依次排列的第一,第二和第三透镜。 第二透镜和第三透镜在它们之间的有效光路区域之间形成有相互接触的平面,并且第三透镜通过粘合剂在其平坦表面处固定到第二透镜。 第二透镜和第三透镜的光轴通过在粘合之前沿其平坦表面滑动透镜而相互对准。 第二透镜还具有从其平坦表面向外形成的接触面,并且在其接触面处被压靠在镜筒的表面上,同时通过联接到透镜镜筒的按压构件将第一透镜压靠第二透镜。
    • 97. 发明授权
    • Behind stop lens
    • 在镜头后面
    • US4676607A
    • 1987-06-30
    • US701763
    • 1985-02-14
    • Koichi Wakamiya
    • Koichi Wakamiya
    • G02B9/12G02B9/16G02B9/20
    • G02B9/20
    • A behind stop lens comprises, in succession from the object side, a first lens which is a positive meniscus lens having its convex surface facing the object side, a second lens which is a biconcave lens, a third lens which is a biconvex lens, and a fourth lens which is a negative meniscus lens having its convex surface facing the image side. The third lens and the fourth lens are joined together to form a positive cemented lens. The behind stop lens has a stop at a position most adjacent to the image side.
    • 背后透镜包括从物体侧连续的第一透镜,其是其凸面朝向物体侧的正弯月形透镜,作为双凹透镜的第二透镜,作为双凸透镜的第三透镜,以及 第四透镜,其是具有面向图像侧的凸面的负弯月形透镜。 第三透镜和第四透镜接合在一起以形成正胶合透镜。 后挡板镜头在与图像侧最相邻的位置处停止。