公开(公告)号：US06178052B1

公开(公告)日：2001-01-23

申请号：US08998481

申请日：1997-12-29

Applicant: Norihiko Aoki ,  Takayoshi Togino

Inventor： Norihiko Aoki ,  Takayoshi Togino

IPC: G02B1700

CPC classification number: G02B23/14

Abstract: An object of the invention is to provide a compact yet high-performance finder optical system comprising an image inversion optical subsystem having a decentered reflecting surface, which enables a bright, distortion-free image to be observed. This object is achieved by locating a rotationally asymmetric surface in the image inversion optical subsystem forming part of the finder optical system.

Abstract translation: 本发明的目的是提供一种紧凑而高性能的取景器光学系统，其包括具有偏心反射表面的图像反转光学子系统，这使得能够观察到明亮，无失真的图像。 该目的通过在形成取景器光学系统的一部分的图像反转光学子系统中定位旋转非对称的表面来实现。

公开(公告)号：US6094315A

公开(公告)日：2000-07-25

申请号：US313388

申请日：1999-05-18

Applicant: Norihiko Aoki

Inventor： Norihiko Aoki

IPC: G02B17/08 ,  G02B27/46 ,  G02B17/00 ,  G02B3/02 ,  G02B5/04

CPC classification number: G02B17/086 ,  G02B17/0848 ,  G02B27/46

Abstract: A high-performance and low-cost image-forming optical system made compact and thin by folding an optical path using reflecting surfaces having power. The optical system has a plurality of reflecting surfaces having power. Among the reflecting surfaces, a reflecting surface (12) of negative power is placed closest to the object side, and a reflecting surface (22) of positive power is placed closer to the image side than the reflecting surface (12). At least one reflecting surface (13) is provided between the reflecting surface (12) and the reflecting surface (22). An axial principal ray (1) incident on the reflecting surface (13) satisfies the condition of 45.degree.

Abstract translation: 高性能和低成本的成像光学系统通过使用具有功率的反射表面折叠光路而紧凑而薄。 该光学系统具有多个具有动力的反射面。 在反射面中，负极的反射面（12）配置成最靠近物体侧，并且正功率的反射面（22）比反射面（12）更靠近像侧。 至少一个反射表面（13）设置在反射表面（12）和反射表面（22）之间。 入射在反射面（13）上的轴线主光线（1）满足45°<=的条件 θθ，其中θ是在轴向主光线（1）与反射表面（13）相交的点处在轴向主光线和垂直于反射表面（13）的垂直方向上形成的线之间形成的角度。

公开(公告)号：US5610766A

公开(公告)日：1997-03-11

申请号：US442339

申请日：1995-05-16

Applicant: Norihiko Aoki ,  Takanori Yamanashi

Inventor： Norihiko Aoki ,  Takanori Yamanashi

IPC: G02B15/20 ,  G02B15/173 ,  G02B15/14

CPC classification number: G02B15/173

Abstract: The invention provides a zooming lens system which covers a wide-angle zone, has a zooming ratio of approximately 3 or higher, and is well corrected for various aberrations. This system comprises, in order from the object side, a first lens unit I having positive refracting power, a second lens unit II having negative refracting power, a third lens unit III having positive refracting power, a fourth lens unit IV having positive refracting power and a fifth lens unit V having positive refracting power, with at least said first, third, fourth and fifth lens units being moved toward the object side for zooming from the wide-angle end to the telephoto end, and conforms to the following conditions:-0.8

Abstract translation: 本发明提供了一种覆盖广角区域的变焦透镜系统，具有大约3或更高的变焦比，并且对各种像差进行了良好的校正。 该系统从物体侧依次包括具有正折射率的第一透镜单元I，具有负折射力的第二透镜单元II，具有正折射力的第三透镜单元III，具有正折射率的第四透镜单元IV 以及具有正折射力的第五透镜单元V，至少所述第一，第三，第四和第五透镜单元朝向物体侧移动，用于从广角端到远摄端的变焦，并符合以下条件： -0.8

公开(公告)号：US5546229A

公开(公告)日：1996-08-13

申请号：US212782

申请日：1994-03-15

Applicant: Norihiko Aoki

Inventor： Norihiko Aoki

IPC: G02B3/00 ,  G02B9/00 ,  G02B9/10 ,  G02B9/34 ,  G02B13/04 ,  G02B15/16

CPC classification number: G02B9/10 ,  G02B3/0087 ,  G02B9/34

Abstract: An optical system comprising a plural number of lens elements at least one of which is designed as a graded refractive index lens element having refractive index distribution in the radial direction, and has aberrations favorably corrected in said optical system as a whole by making most of the correcting functions of the graded refractive index lens element for Petzval's sum and chromatic aberration.

Abstract translation: 一种光学系统，包括多个透镜元件，其中至少一个透镜元件被设计为在径向方向上具有折射率分布的渐变折射率透镜元件，并且在所述光学系统中通过使大部分 校正屈曲度和色差的渐变折射率透镜元件的功能。

公开(公告)号：US5196962A

公开(公告)日：1993-03-23

申请号：US726999

申请日：1991-07-08

Applicant: Norihiko Aoki

Inventor： Norihiko Aoki

IPC: G02B9/00 ,  G02B15/14 ,  G02B15/20

CPC classification number: G02B15/14

Abstract: A compact vari-focal lens system comprising, in the order from the object side, a first lens unit having a positive refractive power, a second lens unit having a positive refractive power and a third lens unit having a negative refractive power, and uses at least one radial type graded refractive index lens element arranged at the image side location in the second lens unit. The varifocal lens system has a high vari-focal ratio and aberrations corrected favorably over the entire vari-focal range from the wide position to the tele position, and consists of a very small number of lens elements.

Abstract translation: 一种紧凑型变焦透镜系统，其从物体侧开始，具有正屈光力的第一透镜单元，具有正屈光力的第二透镜单元和具有负屈光力的第三透镜单元， 布置在第二透镜单元中的图像侧位置处的至少一个径向型渐变折射率透镜元件。 变焦透镜系统具有高变焦比和像差，在从宽位置到远摄位置的整个变焦范围内有利地校正，并且由非常少量的透镜元件组成。

公开(公告)号：US5184251A

公开(公告)日：1993-02-02

申请号：US697442

申请日：1991-05-09

Applicant: Hirofumi Tsuchida ,  Norihiko Aoki

Inventor： Hirofumi Tsuchida ,  Norihiko Aoki

IPC: G02B9/00 ,  G02B3/00 ,  G02B9/58 ,  G02B15/16 ,  G02B15/177

CPC classification number: G02B3/0087 ,  G02B15/177

Abstract: A vari-focal lens system including, in the order from the object side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, an aperture stop, a third lens unit having a positive refractive power and a fourth lens unit having a negative refractive power; and using at least one radial GRIN lens element on each side of the aperture stop. This vari-focal lens system has only a very small number of lens elements and had favorably corrected aberrations.

Abstract translation: 一种变焦透镜系统，包括从物体侧开始的具有负屈光力的第一透镜单元，具有正屈光力的第二透镜单元，孔径光阑，具有正折光力的第三透镜单元和 具有负折光力的第四透镜单元; 并且在孔径光阑的每一侧上使用至少一个径向GRIN透镜元件。 该变焦透镜系统仅具有非常少数量的透镜元件并且具有良好的校正像差。

公开(公告)号：US5157550A

公开(公告)日：1992-10-20

申请号：US603327

申请日：1990-10-25

Applicant: Hirofumi Tsuchida ,  Norihiko Aoki ,  Hiroshi Matsuzaki

Inventor： Hirofumi Tsuchida ,  Norihiko Aoki ,  Hiroshi Matsuzaki

IPC: G02B15/177

CPC classification number: G02B15/177

Abstract: A vari-focal lens system comprising, in the order from the object side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, a third lens unit having a positive refractive power, a fourth lens unit having a positive refractive power and an aperture stop arranged on the image side of said third lens unit, using at least one radial GRIN lens, axial GRIN lens or aspherical surface, and having a high vari-focal ratio and a wide field angle at the wide position.

Abstract translation: 一种变焦透镜系统，其包括从物体侧开始具有负折光力的第一透镜单元，具有正屈光力的第二透镜单元，具有正折光力的第三透镜单元，第四透镜单元 具有正折射力和孔径光阑，其布置在所述第三透镜单元的像侧上，使用至少一个径向GRIN透镜，轴向GRIN透镜或非球面，并且在所述第三透镜单元的像侧上具有高变焦比和宽场角 宽阔的位置

公开(公告)号：US5117308A

公开(公告)日：1992-05-26

申请号：US711895

申请日：1991-06-07

Applicant: Hirofumi Tsuchida ,  Norihiko Aoki ,  Kimiaki Yamamoto

Inventor： Hirofumi Tsuchida ,  Norihiko Aoki ,  Kimiaki Yamamoto

IPC: G02B9/00 ,  G02B3/00 ,  G02B15/16

CPC classification number: G02B15/173 ,  G02B15/17 ,  G02B15/177 ,  G02B27/0025 ,  G02B3/0087

Abstract: A lens system comprising, at locations in the vicinity of each other, radial type graded refractive index lens elements made of a medium having a positive refractive power and other radial type graded refractive index lens elements made of a medium having a negative refractive power. This lens system has aberrations corrected favorably with the radial type graded refractive index lens elements which are made of materials easily preparable.

Abstract translation: 一种透镜系统，包括在具有正屈光力的介质和由具有负屈光力的介质制成的其他径向型渐变折射率透镜元件的径向型渐变折射率透镜元件的彼此附近的位置。 该透镜系统具有由容易制备的材料制成的径向型渐变折射率透镜元件有利地校正的像差。

公开(公告)号：US5032012A

公开(公告)日：1991-07-16

申请号：US456979

申请日：1989-12-26

Applicant: Norihiko Aoki ,  Yuko Kobayashi

Inventor： Norihiko Aoki ,  Yuko Kobayashi

IPC: G02B9/00 ,  G02B3/00 ,  G02B15/08

CPC classification number: G02B3/0087 ,  G02B15/08

Abstract: A rear converter lens system comprising, in the order from the object side, a first lens component having positive refractive power and a second lens component having negative refractive power, and having aberrations, especially Petzval's sum and chromatic aberration, corrected favorably by using at least one GRIN lens element in the lens system.

Abstract translation: 一种后转换器透镜系统，其从物体侧起依次具有具有正折光力的第一透镜部件和具有负屈光力的第二透镜部件，并且具有像差，特别是佩茨瓦奇和色像差，至少使用至少 一个GRIN透镜元件在镜头系统中。

公开(公告)号：US4999007A

公开(公告)日：1991-03-12

申请号：US301971

申请日：1989-01-26

Applicant: Norihiko Aoki ,  Hirofumi Tsuchida ,  Atsujirou Ishii

Inventor： Norihiko Aoki ,  Hirofumi Tsuchida ,  Atsujirou Ishii

IPC: G02B15/177

CPC classification number: G02B15/177

Abstract: A vari-focal lens system comprising, in the order from the object side a movable front lens unit having negative refractive power and a movable rear lens unit having positive refractive power, said front lens unit consists of a negative lens component and a positive lens component or a single negative lens component, and said rear lens unit comprising at least one negative lens component. Said vari-focal lens system consists of a very small number of lens components, concretely specifically three or four lens components.

Abstract translation: 一种变焦透镜系统，其特征在于，从物体侧开始具有负折光力的可动前透镜单元和具有正屈光力的可动后透镜单元，所述前透镜单元由负透镜部件和正透镜部件 或单个负透镜部件，并且所述后透镜单元包括至少一个负透镜部件。 所述变焦透镜系统由非常少数量的透镜组件组成，具体具体为三个或四个透镜组件。