公开(公告)号：US06239920B1

公开(公告)日：2001-05-29

申请号：US09521388

申请日：2000-03-08

申请人： Hiroyuki Matsumoto ,  Osamu Okubo ,  Akio Miyata

发明人： Hiroyuki Matsumoto ,  Osamu Okubo ,  Akio Miyata

IPC分类号： G02B1522

CPC分类号： G02B15/173

摘要： A zoom lens system capable of macro-photography having, in the order from the object side, a first lens unit that has positive optical power and is fixed during zooming; a second lens unit that has negative optical power and moves along the optical axis during zooming; a third lens unit that has positive optical power and is fixed during zooming; and a fourth lens unit that has positive optical power and moves along the optical axis during zooming.

公开(公告)号：US06222681B1

公开(公告)日：2001-04-24

申请号：US08924059

申请日：1997-08-28

申请人： Hiroyuki Matsumoto ,  Osamu Okubo ,  Akio Miyata

发明人： Hiroyuki Matsumoto ,  Osamu Okubo ,  Akio Miyata

IPC分类号： G02B1522

CPC分类号： G02B15/173

摘要： A zoom lens system capable of macro-photography having, in the order from the object side, a first lens unit that has positive optical power and is fixed during zooming; a second lens unit that has negative optical power and moves along the optical axis during zooming; a third lens unit that has positive optical power and is fixed during zooming; and a fourth lens unit that has positive optical power and moves along the optical axis during zooming.

摘要翻译： 能够进行宏观摄影的变焦透镜系统具有从物体侧开始的具有正光焦度并在变焦期间固定的第一透镜单元; 具有负光焦度并在变焦期间沿光轴移动的第二透镜单元; 具有正光焦度并在变焦期间固定的第三透镜单元; 以及具有正光焦度并在变焦期间沿着光轴移动的第四透镜单元。

公开(公告)号：US4874918A

公开(公告)日：1989-10-17

申请号：US155288

申请日：1988-02-12

申请人： Osamu Okubo ,  Takeo Kato ,  Tetsurou Tsushima

发明人： Osamu Okubo ,  Takeo Kato ,  Tetsurou Tsushima

IPC分类号： B23K1/008

CPC分类号： B23K1/008

摘要： In a vacuum brazing apparatus in which articles provided with brazing material are heated to be brazed with each other in a vacuum chamber, no heating means for brazing are arranged in the inside of the vacuum chamber, and heating means are so arranged outside of the vacuum chamber as to heat the vacuum chamber.

摘要翻译： 在真空钎焊装置中，在真空室内加热钎焊物进行钎焊，在真空室内部不设置用于钎焊的加热装置，在真空室外配置加热装置 室以加热真空室。

公开(公告)号：US4162426A

公开(公告)日：1979-07-24

申请号：US862672

申请日：1977-12-21

申请人： Tokuichi Tsunekawa ,  Zenzo Nakamura ,  Osamu Okubo ,  Takashi Uchiyama

发明人： Tokuichi Tsunekawa ,  Zenzo Nakamura ,  Osamu Okubo ,  Takashi Uchiyama

IPC分类号： H05B41/32

CPC分类号： H05B41/325

摘要： The present invention relates to a light-sensing circuit used in a so-called light regulating type flash device to automatically control the amount of flash emitted. In the present invention, a flash photographing with an appropriate exposure is done, securing such flash amount as providing appropriate exposure always regardless of the position of an object in a photographing frame. This is done by making light-sensing for each of different zones independently using a plural number of light-sensing circuits for stopping the flashing by the output of the one light-sensing circuit reaching a prescribed level of output from the different light-sensing circuits.

摘要翻译： 本发明涉及一种用于所谓的调光型闪光装置中的光感测电路，用于自动控制发射的闪光量。 在本发明中，通过适当的曝光进行闪光拍摄，确保与拍摄帧中的物体的位置无关地提供适当曝光的闪光量。 这是通过使用多个光感测电路独立地对每个不同区域进行光感测来实现的，所述多个感光电路通过一个感光电路的输出停止从不同的光感测电路达到规定的输出电平 。