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公开(公告)号：AT278203T
公开(公告)日：2004-10-15
申请号：AT03008373
申请日：2003-04-10
Applicant: OLYMPUS CORP
Inventor： NOZAWA TOSHIHIDE , IIJIMA KYOKO
Abstract: The invention relates to a zoom lens with an easily bendable optical path, which comprises a reduced number of lens element while having high optical specification. The zoom lens comprises a moving lens group B (G2) that has positive refracting power and moves only toward an object side of the zoom lens upon zooming from a wide-angle end to a telephoto end of the zoom lens, a lens group A (G1) that is located on the object side with respect to the moving lens group B, has negative refracting power and remains fixed during the zooming, and a third lens group C (G3) that is located on an image side of the zoom lens with respect to the moving lens group B and moves in a locus different from that of the moving lens group B during the zooming. The lens group A that remains fixed during zooming comprises, in order from an object side thereof, a negative lens element, a reflective optical element and a positive lens element having an absolute value of refracting power smaller than that of the negative lens element.
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公开(公告)号：DE60300059D1
公开(公告)日：2004-11-04
申请号：DE60300059
申请日：2003-04-10
Applicant: OLYMPUS CORP TOKIO TOKYO
Inventor： NOZAWA TOSHIHIDE , IIJIMA KYOKO
Abstract: The invention relates to a zoom lens with an easily bendable optical path, which comprises a reduced number of lens element while having high optical specification. The zoom lens comprises a moving lens group B (G2) that has positive refracting power and moves only toward an object side of the zoom lens upon zooming from a wide-angle end to a telephoto end of the zoom lens, a lens group A (G1) that is located on the object side with respect to the moving lens group B, has negative refracting power and remains fixed during the zooming, and a third lens group C (G3) that is located on an image side of the zoom lens with respect to the moving lens group B and moves in a locus different from that of the moving lens group B during the zooming. The lens group A that remains fixed during zooming comprises, in order from an object side thereof, a negative lens element, a reflective optical element and a positive lens element having an absolute value of refracting power smaller than that of the negative lens element.
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公开(公告)号：DE60300059T2
公开(公告)日：2005-02-10
申请号：DE60300059
申请日：2003-04-10
Applicant: OLYMPUS CORP TOKIO TOKYO
Inventor： NOZAWA TOSHIHIDE , IIJIMA KYOKO
Abstract: The invention relates to a zoom lens with an easily bendable optical path, which comprises a reduced number of lens element while having high optical specification. The zoom lens comprises a moving lens group B (G2) that has positive refracting power and moves only toward an object side of the zoom lens upon zooming from a wide-angle end to a telephoto end of the zoom lens, a lens group A (G1) that is located on the object side with respect to the moving lens group B, has negative refracting power and remains fixed during the zooming, and a third lens group C (G3) that is located on an image side of the zoom lens with respect to the moving lens group B and moves in a locus different from that of the moving lens group B during the zooming. The lens group A that remains fixed during zooming comprises, in order from an object side thereof, a negative lens element, a reflective optical element and a positive lens element having an absolute value of refracting power smaller than that of the negative lens element.
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公开(公告)号：EP1494054A4
公开(公告)日：2009-01-07
申请号：EP03715538
申请日：2003-03-27
Applicant: OLYMPUS CORP
Inventor： MIHARA SHINICHI , NOZAWA TOSHIHIDE
IPC: G02B15/173 , G02B15/177 , G02B15/20 , G02B13/18
CPC classification number: G02B13/18 , G02B13/0065 , G02B13/009 , G02B15/173 , G02B15/177 , G02B26/0825 , G02B27/646
Abstract: A zoom lens which is so easily constructed as to bend an optical path and has a high zoom ratio, wide angle of view, small F value, very small aberration, high optical specification/performance, and which comprises a first lens group (G1) fixed at power varying, a second lens group (G2) having a negative refractive power and moving at power varying, a third lens group (G3) having a positive refractive power and moving at power varying, and a fourth lens group (G4) having a positive refractive power and moving at power varying and during focusing, wherein the first lens group (G1) comprises a negative meniscus lens having its convex facing an object, a reflection optical element (P) for bending an optical path, and a positive lens, and the moving path of the fourth lens group (G4) is in a opposite direction to the moving at power varying of the third lens group (G3) at infinity object point focusing.
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公开(公告)号：JP2008203870A
公开(公告)日：2008-09-04
申请号：JP2008080108
申请日：2008-03-26
Applicant: Olympus Corp , オリンパス株式会社
Inventor： MIYAJIMA TORU , NOZAWA TOSHIHIDE , GOTO HISASHI , WATANABE MASAHITO , MIHARA SHINICHI , MIYAUCHI YUJI
CPC classification number: G02B15/177
Abstract: PROBLEM TO BE SOLVED: To make a suitable selection from zoom modes and lens elements so thin that the total thickness of each lens group can be reduced, thereby slimming down a zoom lens with great thoroughness, and, hence, an electronic imaging device. SOLUTION: The zoom lens comprises, in order from an object side, a first lens group G1 comprising two lenses and having generally negative power and a second lens group G2 comprising two lenses and having generally positive power. The focal length of all the groups 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 (1) and (2). The electronic imaging device has the zoom lens and an electronic imaging element located on the image plane side of the zoom lens. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：为了从变焦模式和透镜元件做出合适的选择，使得能够减小每个透镜组的总厚度，从而使透镜的整体厚度变薄，从而使电子成像 设备。 解决方案：变焦透镜从物体侧依次包括包括两个透镜并具有大体负功率的第一透镜组G1和包括两个透镜并且具有大体正光焦度的第二透镜组G2。 可以通过改变第一透镜组G1和第二透镜组G2之间的空气间隔来改变所有组的焦距。 变焦镜头应满足（1）和（2）。 电子成像装置具有位于变焦透镜的像面侧的变焦透镜和电子摄像元件。 版权所有（C）2008，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2009122682A
公开(公告)日：2009-06-04
申请号：JP2008303575
申请日：2008-11-28
Applicant: Olympus Corp , オリンパス株式会社
Inventor： MIHARA SHINICHI , NOZAWA TOSHIHIDE
Abstract: PROBLEM TO BE SOLVED: To provide a zoom lens which easily has configuration to bend an optical path, and which has high optical specification performance such as a high zoom ratio, a wide angle of view, a small F value, and less aberration. SOLUTION: The zoom lens comprises, in order from an object side, a lens group A (G1) including a negative lens and a reflection optical element for bending the optical path and fixed when varying power, a lens group B (G2) moving only in one direction when varying power from a wide angle end to a telephoto end, an aperture stop S positionally immovable when varying power, a lens group C (G3) and a lens group D (G4). The lens group A has negative refractive power, the lens group B has positive refractive power, the lens group C has negative refractive power, and the lens group D has positive refractive power. The lens group A comprises a sub group A1 having a negative meniscus lens having a convex surface on the object side, the reflection optical element P for bending the optical path and a sub group A2 including at least a positive lens. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 解决的问题：为了提供一种变形透镜，其容易地具有弯曲光路的构造，并且具有高的光学规格性能，例如高变焦比，宽视角，小F值和更小的变焦透镜 像差 解决方案：变焦透镜从对象侧依次包括具有负透镜和用于弯曲光路并在变化时固定的反射光学元件的透镜组A（G1），透镜组B（G2 ）在从广角端到远摄端的功率变化时，仅在一个方向上移动，当变焦时位置不可移动的孔径光阑S，透镜组C（G3）和透镜组D（G4）。 透镜组A具有负屈光力，透镜组B具有正折光力，透镜组C具有负折光力，透镜组D具有正折光力。 透镜组A包括具有在物体侧具有凸面的负弯月形透镜的子组A1，用于弯曲光路的反射光学元件P和至少包括正透镜的子组A2。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2005024581A
公开(公告)日：2005-01-27
申请号：JP2003186642
申请日：2003-06-30
Applicant: Olympus Corp , オリンパス株式会社
Inventor： KAMO YUJI , NOZAWA TOSHIHIDE
IPC: G02B13/18
Abstract: PROBLEM TO BE SOLVED: To provide a compact and high-performance image-formation optical system and an imaging apparatus using the same. SOLUTION: The invention relates to an image-formation optical system for compact optical equipment satisfying miniaturization and the reduction of aberration at the same time and consisting of four lenses. The focal distance of a 2nd negative lens is optimized so as to solve the problem. A 1st positive lens L1, the 2nd negative lens L2, a 3rd positive lens L3 and a 4th positive lens L4 are successively arranged in this order from an object side. The image-formation optical system satisfies a conditional expression: -1.4 2 /f 2 is the focal distance of the 2nd negative lens L2 and (f) is the focal distance of the image-formation optical system. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种紧凑且高性能的成像光学系统和使用该光学系统的成像装置。 解决方案：本发明涉及一种用于紧凑型光学设备的图像形成光学系统，其满足小型化和同时减小像差，由四个透镜组成。 优化了第二负透镜的焦距，以解决问题。 第一正透镜L1，第二负透镜L2，第三正透镜L3和第四正透镜L4依次从物体侧排列。 图像形成光学系统满足条件表达式：-1.4
2 / f <-0.7当假设f 2 是第二个负的焦距 透镜L2和（f）是成像光学系统的焦距。 版权所有（C）2005，JPO＆NCIPI -
公开(公告)号：JP2004341013A
公开(公告)日：2004-12-02
申请号：JP2003134222
申请日：2003-05-13
Applicant: Olympus Corp , オリンパス株式会社
Inventor： KAMO YUJI , NOZAWA TOSHIHIDE
CPC classification number: G02B13/001 , G02B9/34
Abstract: PROBLEM TO BE SOLVED: To provide an imaging optical system simultaneously satisfying over a wide range of angles and size reduction which does not exceed 30-50° for the field angle, and to provide an imaging device which uses it.
SOLUTION: The imaging optical system arranges a first positive lens L1, a second negative lens L2, a third positive lens L3, and a fourth positive lens 14, in this order from an object side. The imaging optical system has a composite focal distance of the first positive lens L1 or the second negative lens L2 positive or the composite focal distance of the second negative lens L2 or the fourth positive lens L4 negative.
COPYRIGHT: (C)2005,JPO&NCIPI-
公开(公告)号：JP2008203871A
公开(公告)日：2008-09-04
申请号：JP2008080109
申请日：2008-03-26
Applicant: Olympus Corp , オリンパス株式会社
Inventor： MIYAJIMA TORU , NOZAWA TOSHIHIDE , GOTO HISASHI , WATANABE MASAHITO , MIHARA SHINICHI , MIYAUCHI YUJI
CPC classification number: G02B15/177
Abstract: PROBLEM TO BE SOLVED: To make a suitable selection from zoom modes and lens elements so thin that the total thickness of each lens group can be reduced, thereby slimming down a zoom lens with great thoroughness, and, hence, an electronic imaging device. SOLUTION: The zoom lens comprises, in order from an object side, a first lens group G1 comprising two lenses and having generally negative power and a second lens group G2 comprising two lenses and having generally positive power. The focal length of all the groups 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 all of (d), (g), (j), (l) and (m). The electronic imaging device has the zoom lens and an electronic imaging element arranged on the image plane side of the zoom lens. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：为了从变焦模式和透镜元件做出合适的选择，使得能够减小每个透镜组的总厚度，从而使透镜的整体厚度变薄，从而使电子成像 设备。 解决方案：变焦透镜从物体侧依次包括包括两个透镜并具有大体负功率的第一透镜组G1和包括两个透镜并且具有大体正光焦度的第二透镜组G2。 可以通过改变第一透镜组G1和第二透镜组G2之间的空气间隔来改变所有组的焦距。 变焦镜头应满足（d），（g），（j），（l）和（m）。 该电子成像装置具有设置在变焦透镜的像面侧的变焦透镜和电子摄像元件。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2004354435A
公开(公告)日：2004-12-16
申请号：JP2003148701
申请日：2003-05-27
Applicant: Olympus Corp , オリンパス株式会社
Inventor： NOZAWA TOSHIHIDE , ARAI KAZUHIKO , MIYOSHI TAKASHI , IWAKI HIDEKAZU
Abstract: PROBLEM TO BE SOLVED: To provide a stereoscopic imaging apparatus equipped with a stereoscopic imaging optical system made small in size and having a large viewing angle in the horizontal direction (parallax direction). SOLUTION: The stereoscopic imaging apparatus has 1st and 2nd objective groups 1L and 1R arranged by leaving space in between and having negative refractive power, an image forming lens group 3 arranged in an optical path nearer to the side of a single imaging device 4 than the objective groups 1L and 1R and having positive refractive power, and 1st reflection surfaces 21L and 21R reflecting incident luminous flux on the objective groups 1L and 1R to the sides of the objective groups 1R and 1L on an opposite side and 2nd reflection surfaces 22L and 22R reflecting the luminous flux from the 1st reflection surfaces 21L and 21R to the side of the imaging device 4. The 2nd reflection surfaces 22L and 22R are arranged to reflect their reflected luminous flux to the side of a subject, and the imaging device 4 is arranged on the side of the reflected luminous flux by the 2nd reflection surfaces 22L and 22R. COPYRIGHT: (C)2005,JPO&NCIPI
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