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    • 11. 发明授权
    • Photographing optical system and image pickup apparatus including the same
    • 摄影光学系统和包括它的摄像设备
    • US07538957B2
    • 2009-05-26
    • US11869666
    • 2007-10-09
    • Hiroshi Endo
    • Hiroshi Endo
    • G02B3/00
    • G02B13/02G02B27/0037G02B27/4211G02B27/646
    • A photographing optical system includes at least one of a positive lens and diffractive optical element being provided closer to an object side of the system than an intersection P of a light axis and paraxial chief ray, and a negative lens, provided closer to an image side than the intersection. The positive lens and the negative lens are formed of materials satisfying the following conditions when the maximum height of a paraxial marginal ray, passing through a lens surface, from the light axis at a location closer to the object side than the intersection is greater than a maximum height of the paraxial marginal ray, passing through a lens surface, from the light axis at a location closer to the image than the intersection: −0.0015 ×νd +0.6425
    • 摄影光学系统包括:靠近系统的物体侧的正透镜和衍射光学元件中的至少一个,与靠近图像侧的光轴和近轴主光线的交点P和负透镜 比交叉点。 正透镜和负透镜由满足以下条件的材料形成,当穿过透镜表面的近轴边缘光线的最大高度在比交叉点更靠近物体侧的位置处的光轴的最大高度大于 傍轴边缘射线的最大高度,通过透镜表面,在比交叉点更靠近图像的位置处的光轴:<?in-line-formula description =“In-line Formulas”end =“lead”? > -0.0015 xnud +0.6425 <?in-line-formula description =“In-line Formulas”end =“lead” ?> 60 其中,nud是阿贝数,thetagF是部分色散比。
    • 13. 发明授权
    • Imaging optical system and image capturing apparatus including imaging optical system
    • 成像光学系统和包括成像光学系统的图像捕获设备
    • US07426083B2
    • 2008-09-16
    • US11429525
    • 2006-05-04
    • Hiroshi Endo
    • Hiroshi Endo
    • G02B13/02
    • G02B13/02G02B27/42G02B27/4211G02B27/4216G02B27/4272G02B27/4277
    • At least one exemplary embodiment is directed to an imaging optical system which includes a first lens unit having a positive refractive power and a second lens unit having a negative refractive power. The first lens unit includes a first lens sub-unit including a single lens having a positive refractive power, a second lens sub-unit including a diffractive optical part and having a positive refractive power, and a third lens sub-unit having a negative refractive power. The first to third lens sub-units are disposed in this order from the object side to the image side. The diffractive optical part can be convex towards the object side and the following condition can be satisfied: 0.05
    • 至少一个示例性实施例涉及一种成像光学系统,其包括具有正折光力的第一透镜单元和具有负屈光力的第二透镜单元。 第一透镜单元包括具有正屈光力的单透镜的第一透镜子单元和包括衍射光学部分并具有正折光力的第二透镜子单元和具有正折射率的第三透镜子单元 功率。 第一到第三透镜子单元从物体侧到像侧依次布置。 衍射光学部分可以朝向物体侧凸出,并且可以满足以下条件:0.05
    • 15. 发明申请
    • Image-taking apparatus
    • 摄像仪
    • US20070019937A1
    • 2007-01-25
    • US11491290
    • 2006-07-24
    • Hiroshi Endo
    • Hiroshi Endo
    • G03B17/00
    • G03B7/093G03B2207/005G03B2217/005H04N5/23248H04N5/2327
    • An image-taking apparatus includes an imaging device and a shooting lens of variable foal length, and generates image signals by forming a subject image entering through the shooting lens on the imaging device. The apparatus includes an angular-velocity sensor that predicts a shake that will occur at shooting by detecting a shake before shooting. The apparatus also includes a main CPU that controls exposure by adopting a shutter speed within a maximum shutter speed. The maximum shutter speed can be changed according to a result of shake detection and a focal length of the shooting lens to be used at shooting.
    • 摄像装置包括成像装置和可变驹长度的拍摄镜头,并且通过在成像装置上形成通过拍摄镜头进入的被摄体图像来生成图像信号。 该装置包括角速度传感器,其通过在拍摄之前检测到震动来预测在拍摄时将发生的抖动。 该装置还包括通过采用最大快门速度下的快门速度来控制曝光的主CPU。 可以根据抖动检测的结果和拍摄时要使用的拍摄镜头的焦距来更改最大快门速度。