公开(公告)号：US4461547A

公开(公告)日：1984-07-24

申请号：US507141

申请日：1983-06-23

申请人： Kazuo Ikari ,  Toru Fujii

发明人： Kazuo Ikari ,  Toru Fujii

IPC分类号： G03B11/04

CPC分类号： G03B11/045

摘要： A shiftable lens hood for a camera includes a light-intercepting body which has its front end representing a sectional form taken on a plane inclined to the center axis thereof of which is secured to a lens barrel of the camera, in eccentric relationship with its mounting section, whereby even when a taking lens is shifted effective light rays within a photographing angle of view are not shaded, thus an effective light-intercepting effect being obtainable.

摘要翻译： 用于照相机的可换镜头罩包括遮光体，该遮光体的前端表示在与其中心轴线倾斜的平面上形成的截面形状，该截面形状固定在相机的镜筒上，与其安装有偏心关系 即使在摄影视场内有效的光线被移动时，即使是不遮蔽，因此可以获得有效的遮光效果。

公开(公告)号：US4436382A

公开(公告)日：1984-03-13

申请号：US316915

申请日：1981-10-30

申请人： Kazuo Ikari ,  Toru Fujii

发明人： Kazuo Ikari ,  Toru Fujii

IPC分类号： G02B9/64 ,  G02B13/04

CPC分类号： G02B9/64 ,  G02B13/04

摘要： Retro-focus type super wide angle lens system comprising a first positive meniscus lens component having the convex surface on the object side, a second negative meniscus lens component having the convex surface on the object side, a third negative meniscus lens component having the convex surface on the object side, a fourth positive lens component, a fifth negative meniscus lens component, a sixth positive cemented lens component, a seventh negative cemented lens component, an eighth positive meniscus lens component having the convex surface on the object side, a ninth positive lens component, and a filter disposed between the fifth and sixth lens components. In this lens system, aberrations are well corrected.

摘要翻译： 包括在物体侧具有凸面的第一正弯月形透镜部件和物体侧具有凸面的第二负弯月形透镜部件，具有凸面的第三负弯月形透镜部件的复焦型超广角镜头系统 在物体侧具有第四正透镜部件，第五负弯月形透镜部件，第六正胶合透镜部件，第七负胶合透镜部件，具有物体侧的凸面的第八正弯月形透镜部件，第九正阳光 透镜部件和设置在第五和第六透镜部件之间的过滤器。 在该透镜系统中，像差得到很好的校正。