专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5270866A Compact zoom lens 失效
标题翻译：紧凑型变焦镜头
公开(公告)号：US5270866A
公开(公告)日：1993-12-14
申请号：US797165
申请日：1991-11-26
申请人： Kouji Oizumi , Keiji Ikemori , Yasuhisa Sato , Yasuyuki Yamada , Hiroki Nakayama , Takashi Matsushita
发明人： Kouji Oizumi , Keiji Ikemori , Yasuhisa Sato , Yasuyuki Yamada , Hiroki Nakayama , Takashi Matsushita
IPC分类号： G02B15/17 , G02B15/14 , G02B15/177
CPC分类号： G02B15/177
摘要： A zoom lens comprising, from front to rear, a first lens unit of negative power, a second lens unit of positive power and a third lens unit of negative power, the second and third lens units being moved to effect zooming, and the third lens unit having its focal length f.sub.3 laid in the following range:0.5 f.sub.W
摘要翻译：一种变焦透镜，包括从前到后具有负功率的第一透镜单元，正功率的第二透镜单元和负功率的第三透镜单元，所述第二和第三透镜单元被移动以实现变焦，并且所述第三透镜其焦距f3放置在以下范围内的单位：0.5 fW <| f3| <4 fT其中fW和fT是整个系统的最短和最长焦距。

2. 发明授权

US4842395A Finder of variable magnification 失效
标题翻译： Finder的可变放大倍数
公开(公告)号：US4842395A
公开(公告)日：1989-06-27
申请号：US159471
申请日：1988-02-19
申请人： Yasuhisa Sato , Nozomu Kitagishi , Yasuyuki Yamada , Hiroki Nakayama , Kouji Oizumi
发明人： Yasuhisa Sato , Nozomu Kitagishi , Yasuyuki Yamada , Hiroki Nakayama , Kouji Oizumi
IPC分类号： G02B25/00 , G02B15/16 , G02B15/177 , G02B23/14 , G03B13/12
CPC分类号： G02B15/177 , G02B23/145
摘要： The disclosed variable magnification finder includes, from front to rear, a first lens unit of negative power, a second lens unit of positive power, a third lens unit of positive power, the first, second and third lens units constituting an objective lens of positive power, and an eyepiece of positive power. The first and second lens units form a finder image on a plane just in front of the third lens unit. The second lens unit is moved axially forward to increase the image magnification, while the shift of diopter of the finder is simultaneously compensated for by moving the first lens unit.
摘要翻译：所公开的可变倍率取景器包括从前到后的负功率的第一透镜单元，正光焦度的第二透镜单元，正光焦度的第三透镜单元，构成正的物镜的第一，第二和第三透镜单元权力和一个正面力量的目镜。第一和第二透镜单元在刚好在第三透镜单元前面的平面上形成取景器图像。第二透镜单元轴向移动以增加图像放大率，同时通过移动第一透镜单元来同时补偿取景器的屈光度偏移。

3. 发明授权

US4751539A Variable power finder 失效
标题翻译：可变功率寻找器
公开(公告)号：US4751539A
公开(公告)日：1988-06-14
申请号：US080570
申请日：1987-07-31
申请人： Yasuyuki Yamada , Yasuhisa Sato , Hiroki Nakayama , Kouji Oizumi
发明人： Yasuyuki Yamada , Yasuhisa Sato , Hiroki Nakayama , Kouji Oizumi
IPC分类号： G02B15/04 , G02B23/14 , G03B13/12
CPC分类号： G02B15/04 , G02B23/14 , G02B23/145
摘要： A variable power finder having an objective lens of positive refracting power comprising a first lens unit of positive refracting power movable along an optical axis and a second lens unit releasably attached to the first lens unit in axial alignment, wherein a real image to be observed is formed by the objective lens.
摘要翻译：一种具有正折射率的物镜的可变功率寻找器，包括沿着光轴可移动的正折射力的第一透镜单元和可轴向地连接到第一透镜单元的第二透镜单元，其中要观察的实像是由物镜形成。

4. 发明授权

US4770508A Conversion lens releasably attached behind master lens 失效
标题翻译：可转接镜头可拆卸地安装在主镜头后面
公开(公告)号：US4770508A
公开(公告)日：1988-09-13
申请号：US898314
申请日：1986-08-20
申请人： Yasuyuki Yamada , Yasuhisa Sato , Hiroki Nakayama , Kouji Oizumi
发明人： Yasuyuki Yamada , Yasuhisa Sato , Hiroki Nakayama , Kouji Oizumi
IPC分类号： G02B13/18 , G02B15/08 , G02B15/12 , G02B15/02 , G02B9/10
CPC分类号： G02B15/08
摘要： A conversion lens for attachment to the rear of a master lens to increase the focal length of the entire system, includes a positive lens, and a negative lens positioned on the image side of the positive lens, wherein at least one of the lens surfaces of the positive lens and the negative lens is an aspherical surface.
摘要翻译：用于附接到主透镜后部以增加整个系统的焦距的转换透镜包括位于正透镜的像侧上的正透镜和负透镜，其中至少一个透镜表面正透镜和负透镜是非球面。

5. 发明授权

US4726668A Zoom lens of short total length 失效
标题翻译：变焦镜头长度短
公开(公告)号：US4726668A
公开(公告)日：1988-02-23
申请号：US741634
申请日：1985-06-05
申请人： Hiroki Nakayama , Yasuhisa Sato , Kouji Oizumi , Yasuyuki Yamada
发明人： Hiroki Nakayama , Yasuhisa Sato , Kouji Oizumi , Yasuyuki Yamada
IPC分类号： G02B13/18 , G02B15/16 , G02B15/00
CPC分类号： G02B15/161
摘要： In the disclosed zoom lens, a positive front lens unit and a negative rear lens unit are moved forwardly axially in differential relation to vary the overall focal length from a minimum to a maximum value, while a positive middle lens unit is kept stationary during the variation of the focal length. A diaphragm determining the F-number is positioned at a fixed point between the front and rear lens units.
摘要翻译：在所公开的变焦镜头中，正前透镜单元和负后透镜单元以差分关系向前轴向移动，以将整个焦距从最小值变化到最大值，而正中间透镜单元在变化期间保持静止的焦距。确定F数的隔膜位于前后透镜单元之间的固定点。

6. 发明授权

US4697882A Beam splitter for changing optical paths small tilt 失效
标题翻译：光束分离器用于改变光路小倾斜
公开(公告)号：US4697882A
公开(公告)日：1987-10-06
申请号：US772769
申请日：1985-09-05
申请人： Yasuhisa Sato , Yasuyuki Yamada , Hiroki Nakayama , Kouji Oizumi
发明人： Yasuhisa Sato , Yasuyuki Yamada , Hiroki Nakayama , Kouji Oizumi
IPC分类号： G02B27/10 , G02B7/18 , G02B23/04 , G02B26/08 , G02B27/14 , G03B13/02
CPC分类号： G02B27/126 , G02B23/04 , G02B7/1805
摘要： In the disclosed beam splitter, a first prism has an entrance face, an inclined face, and a mirrored face for totally reflecting a beam reflected from the inclined face back to the inclined face. A second prism has an entrance face in parallel with the inclined face of the first prism, and two exit faces. One of the exit faces of the second prism cooperates with the mirrored face of the first prism. When the first and second prisms are turned as a unit, the inclined face of the first prism either passes a light beam arriving from the entrance face through to the second prism and out one of the exit faces or totally reflects the arriving light beam to the mirrored face. The light beam reflected back from the mirrored face now passes through the inclined face to the second prism and out the cooperating exit face of the second prism.
摘要翻译：在公开的分束器中，第一棱镜具有入射面，倾斜面和镜面，用于将从倾斜面反射的光束全反射回倾斜面。第二棱镜具有与第一棱镜的倾斜面平行的入射面和两个出射面。第二棱镜的出射面之一与第一棱镜的镜面配合。当第一和第二棱镜作为一个单元转动时，第一棱镜的倾斜面或者将从入射面到达的光束通过到第二棱镜，并将出射面中的一个出射面全部反射到镜面。从镜面反射回来的光束现在通过倾斜面到达第二棱镜并离开第二棱镜的配合出射面。

7. 发明授权

US4830474A Variable magnification optical system 失效
标题翻译：变倍光学系统
公开(公告)号：US4830474A
公开(公告)日：1989-05-16
申请号：US934914
申请日：1986-11-25
申请人： Hiroki Nakayama , Yasuhisa Sato , Kouji Oizumi , Yasuyuki Yamada
发明人： Hiroki Nakayama , Yasuhisa Sato , Kouji Oizumi , Yasuyuki Yamada
IPC分类号： G02B15/10
CPC分类号： G02B15/10
摘要： A changeover type variable magnification optical system whose focal length is changed by locating an auxiliary lens on the image side of a master lens assembly. The system satisfies following inequalities of:0.2
摘要翻译：通过将辅助透镜定位在主镜头组件的像侧上来改变其焦距的转换型可变放大倍数光学系统。该系统满足以下不等式：0.2

8. 发明授权

US4702581A Flash device for camera 失效
标题翻译：照相机闪光灯
公开(公告)号：US4702581A
公开(公告)日：1987-10-27
申请号：US814629
申请日：1985-12-30
申请人： Yasuyuki Yamada , Yasuhisa Sato , Hiroki Nakayama , Kouji Oizumi
发明人： Yasuyuki Yamada , Yasuhisa Sato , Hiroki Nakayama , Kouji Oizumi
IPC分类号： G02B3/08 , G03B15/02 , G03B15/03 , G03B15/05
CPC分类号： G03B15/03 , G03B2215/0525
摘要： A flash device for a camera having a light emitting window of rectangular shape oriented so that the long side of the window is nearly perpendicular to a long side of the film format in the camera. An optical panel in the light emitting window is constructed in such a way as to satisfy the following conditions:0.5
摘要翻译：一种用于相机的闪光装置，具有取向为矩形的发光窗，使得窗的长边几乎垂直于相机中的胶片格式的长边。光发射窗中的光学面板以满足以下条件的方式构成：0.5

9. 发明授权

US4871238A Photographic optical device with variable magnification 失效
标题翻译：具有可变放大倍数的摄影光学装置
公开(公告)号：US4871238A
公开(公告)日：1989-10-03
申请号：US19687
申请日：1987-02-27
申请人： Yasuhisa Sato , Yasuyuki Yamada , Hiroki Nakayama , Kouji Oizumi
发明人： Yasuhisa Sato , Yasuyuki Yamada , Hiroki Nakayama , Kouji Oizumi
IPC分类号： G02B15/10
CPC分类号： G02B15/10
摘要： A photographic optical device of this invention comprises: a master lens unit having a positive refractive power, determining a photographic optical path and moving along the optical axis to change magnification; a first auxiliary lens unit having a positive refractive power and being capable of being placed on and off the optical path; and a second auxiliary lens unit having a negative refractive power and being capable of being placed on and off the optical path. The first auxiliary lens unit is attached to an image-plane side of the master lens unit to form a photographic unit giving a low ratio of magnification. The second auxiliary lens unit is attached to an image-plane side of the master lens unit to form another photographic unit giving a high ratio of magnification. The first and second auxiliary lens units are placed outside of the optical path to form another photographic unit giving a middle ratio of magnification.
摘要翻译：本发明的照相光学装置包括：主透镜单元，具有正的折光力，确定照相光路并沿着光轴移动以改变放大率; 第一辅助透镜单元，具有正的折光力并且能够放置在光路上或从光路上放置; 以及具有负屈光力并且能够放置在光路上和从光路上的第二辅助透镜单元。第一辅助透镜单元附接到主透镜单元的图像平面侧，以形成具有低倍率的照相单元。第二辅助透镜单元附接到主透镜单元的像平面侧，以形成另一个具有高倍率比的照相单元。第一辅助透镜单元和第二辅助透镜单元被放置在光路外部，以形成另一个具有中等比例的照相单元。

10. 发明授权

US4757336A View finder of variable magnification 失效
标题翻译：可变放大倍率的查找器
公开(公告)号：US4757336A
公开(公告)日：1988-07-12
申请号：US820626
申请日：1986-01-21
申请人： Hiroki Nakayama , Yasuhisa Sato , Kouji Oizumi , Yasuyuki Yamada
发明人： Hiroki Nakayama , Yasuhisa Sato , Kouji Oizumi , Yasuyuki Yamada
IPC分类号： G02B25/00 , G02B15/16 , G02B15/177 , G02B23/14 , G03B13/12 , G03B13/02 , G02B15/00
CPC分类号： G02B25/001 , G02B15/177 , G02B23/145
摘要： A view finder having, from front to rear, a first lens unit of negative power, a second lens unit of positive power and a third lens unit of negative power, the second lens unit being moved axially forward as the magnification varies from the smallest to the largest value, while the first lens unit is moved to compensate for the diopter shift resulting from the variation of the magnification.
摘要翻译：具有从前到后具有负功率的第一透镜单元，正功率的第二透镜单元和负功率的第三透镜单元的取景器，所述第二透镜单元随着所述放大率从最小到最大值，同时移动第一透镜单元以补偿由放大率变化引起的屈光度偏移。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式