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    • 1. 发明授权
    • Zoom lens
    • 变焦镜头
    • US06510008B1
    • 2003-01-21
    • US09870985
    • 2001-06-01
    • Yuji MiyauchiTetsuhide Takeyama
    • Yuji MiyauchiTetsuhide Takeyama
    • G02B1514
    • G02B15/173
    • A zoom lens includes, in order from the object side, a first lens unit with positive refracting power, a second lens unit with negative refracting power, a third lens unit with positive refracting power, and a fourth lens unit with positive refracting power. At least, the second lens unit and the fourth lens unit are moved along the optical axis to change spaces between individual lens units, and thereby the magnification of the zoom lens is changed in the range of the wide-angle position to the telephoto position. In this case, the third lens unit has three positive lens elements and one negative lens element located at the most image-side position.
    • 变焦透镜从物体依次包括具有正折射率的第一透镜单元,具有负折射力的第二透镜单元,具有正折射率的第三透镜单元和具有正折射率的第四透镜单元。 至少,第二透镜单元和第四透镜单元沿着光轴移动以改变各个透镜单元之间的空间,从而在广角位置与远摄位置的范围内改变变焦透镜的放大率。 在这种情况下,第三透镜​​单元具有位于最图像侧位置的三个正透镜元件和一个负透镜元件。
    • 4. 再颁专利
    • Image pickup system
    • 摄像系统
    • USRE40563E1
    • 2008-11-04
    • US11584795
    • 2006-10-23
    • Yuji MiyauchiHirohiko Kimata
    • Yuji MiyauchiHirohiko Kimata
    • G02B25/00
    • H04N5/23293G02B23/14
    • The invention relates to an image pickup system comprising an electronic view finder suitable for achieving compactness and having a sufficient viewing angle of field and satisfactory optical performance. The image pickup system comprises an image pickup device, an image display device for displaying an image, a controller for converting image formation obtained from the image pickup device into a signal that enables the image information to be formed on the image display device, and a viewing optical system for guiding an image displayed on the display device to a viewer's eye. The viewing optical system comprises at least three lenses.
    • 本发明涉及一种包括电子取景器的图像拾取系统,其适用于实现紧凑性并且具有足够的视场角和令人满意的光学性能。 图像拾取系统包括图像拾取装置,用于显示图像的图像显示装置,用于将从图像拾取装置获得的图像转换成用于将图像信息形成在图像显示装置上的信号的控制器,以及 观察光学系统,用于将显示在显示装置上的图像引导至观看者的眼睛。 观察光学系统包括至少三个透镜。
    • 5. 发明授权
    • Electronic image pickup system
    • 电子摄像系统
    • US07212242B2
    • 2007-05-01
    • US10114302
    • 2002-04-03
    • Masahito WatanabeToru MiyajimaShinichi MiharaYuji MiyauchiToshihide NozawaHisashi Goto
    • Masahito WatanabeToru MiyajimaShinichi MiharaYuji MiyauchiToshihide NozawaHisashi Goto
    • G03B13/00H04N5/232G02B15/14
    • H04N5/2254G02B15/177
    • The invention makes a suitable selection from zoom modes and lens elements so thin that the thickness of each lens group can reduced, thereby slimming down a zoom lens with great thoroughness and, hence, an electronic image pickup system. The electronic image pickup system a zoom lens and an electronic image pickup device located on the image plane side of the zoom lens. The zoom lens comprises, in order from the object side, a first lens group G1 comprising two lens components and having generally negative power and a second lens group G2 comprising two lens components and having generally positive power. The focal length of the zoom lens can be varied by varying the air separation between the first lens group G1 and the second lens group G2. The zoom lens should satisfy at least one of conditions (a) to (n).
    • 本发明使得从变焦模式和透镜元件的适当选择变得如此薄,使得每个透镜组的厚度可以减小,从而使透视度变差的变焦透镜,因此电子图像拾取系统。 电子摄像系统,位于变焦透镜的像面侧的变焦透镜和电子摄像装置。 变焦透镜从物体侧依次包括包括两个透镜部件并且具有大体负功率的第一透镜组G 1和包括两个透镜部件并且具有大体正的光焦度的第二透镜组G 2。 可以通过改变第一透镜组G 1和第二透镜组G 2之间的空气间隔来改变变焦透镜的焦距。 变焦镜头应满足条件(a)至(n)中的至少一个。
    • 6. 发明申请
    • Electronic image pickup system
    • 电子摄像系统
    • US20060274168A1
    • 2006-12-07
    • US11503120
    • 2006-08-14
    • Masahito WatanabeToru MiyajimaShinichi MiharaYuji MiyauchiToshihide NozawaHisashi Goto
    • Masahito WatanabeToru MiyajimaShinichi MiharaYuji MiyauchiToshihide NozawaHisashi Goto
    • H04N5/262
    • H04N5/2254G02B15/177
    • The invention makes a suitable selection from zoom modes and lens elements so thin that the thickness of each lens group can reduced, thereby slimming down a zoom lens with great thoroughness and, hence, an electronic image pickup system. The electronic image pickup system a zoom lens and an electronic image pickup device located on the image plane side of the zoom lens. The zoom lens comprises, in order from the object side, a first lens group G1 comprising two lens components and having generally negative power and a second lens group G2 comprising two lens components and having generally positive power. The focal length of the zoom lens can be varied by varying the air separation between the first lens group G1 and the second lens group G2. The zoom lens should satisfy at least one of conditions (a) to (n).
    • 本发明使得从变焦模式和透镜元件的适当选择变得如此薄,使得每个透镜组的厚度可以减小,从而使透视度变差的变焦透镜,因此电子图像拾取系统。 电子摄像系统,位于变焦透镜的像面侧的变焦透镜和电子摄像装置。 变焦透镜从物体侧依次包括包括两个透镜部件并且具有大体负功率的第一透镜组G 1和包括两个透镜部件并且具有大体正的光焦度的第二透镜组G 2。 可以通过改变第一透镜组G 1和第二透镜组G 2之间的空气间隔来改变变焦透镜的焦距。 变焦镜头应满足条件(a)至(n)中的至少一个。
    • 9. 发明授权
    • Electronic image pickup equipment
    • 电子摄像设备
    • US06417973B2
    • 2002-07-09
    • US09725258
    • 2000-11-29
    • Shinichi MiharaYuji MiyauchiMasahito WatanabeHirokazu Konishi
    • Shinichi MiharaYuji MiyauchiMasahito WatanabeHirokazu Konishi
    • G02B1514
    • H04N5/2254G02B15/177G02B26/007
    • The object of the invention is to reduce the thickness of electronic image pickup equipment as much as possible, using a zooming mode having stable, high image-formation capabilities from an object at infinity to a near-by object. The electronic image pickup equipment comprises a zoom lens system comprising a negative, first lens group G1, a positive, second lens group G2 and a positive, third lens group G3. For zooming from the wide-angle end to the telephoto end of the zoom lens system upon focused on an object at infinity, the separation between G2 and G3 becomes wise. By moving G3 toward the object side of the system, the system can be focused on a nearer-by object. In the zoom lens system, the second lens group G2 comprises one positive lens 2a, one negative lens 2b and a lens subgroup 2c comprising at least one lens, and the third lens group G3 comprises one positive lens. The zoom lens system satisfies conditions with respect to the optical axis distance from the image-side surface of the positive lens 2a to the image-side surface of the negative lens 2b and the focal length ratio in air between the positive lens 2a and the lens subgroup 2c.
    • 本发明的目的是尽可能减小电子摄像设备的厚度,使用具有从无穷远到近距离物体的物体具有稳定的高成像能力的变焦模式。 电子摄像设备包括一个变焦透镜系统,它包括负的第一透镜组G1,正的,第二透镜组G2和正的第三透镜组G3。 为了在聚焦在无限远的物体上时从变焦镜头系统的广角端到望远端的变焦,G2和G3之间的分离变得明智。 通过将G3移动到系统的物体侧,系统可以集中在更近的对象上。 在变焦透镜系统中,第二透镜组G2包括一个正透镜2a,一个负透镜2b和包括至少一个透镜的透镜子组2c,并且第三透镜组G3包括一个正透镜。 变焦透镜系统满足关于从正透镜2a的像侧表面到负透镜2b的像侧表面的光轴距离和正透镜2a与透镜之间的空气焦距比的条件 子组2c。