公开(公告)号：US4370677A

公开(公告)日：1983-01-25

申请号：US215213

申请日：1980-12-11

申请人： Dorothy M. Baldwin ,  Frank J. Oharek ,  Curt Stahl

发明人： Dorothy M. Baldwin ,  Frank J. Oharek ,  Curt Stahl

IPC分类号： G09B9/30 ,  H04N7/18 ,  H04N5/30 ,  H04N5/72

CPC分类号： G09B9/307 ,  H04N7/183 ,  Y10S388/911 ,  Y10S388/921 ,  Y10S388/933

摘要： A rotating shutter system for improving the resolution of a visual scene projected upon a spherical screen by a 360.degree. non-programmed visual display system. A rotating shutter, which has on its upper surface a plurality of opaque radial lines, is positioned within an annular probe of the 360.degree. non-programmed visual display system so as to improve the resolution of the annular probe. A direct current motor drives the rotating shutter at a predetermined rotational speed, and a feedback circuit maintains the rotational speed of the direct current motor at a constant value.

摘要翻译： 一种旋转快门系统，用于通过360°非编程视觉显示系统提高投影在球形屏幕上的视觉场景的分辨率。 在其上表面具有多个不透明径向线的旋转快门位于360°非编程视觉显示系统的环形探针内，以提高环形探针的分辨率。 直流电动机以预定转速驱动旋转快门，并且反馈电路将直流电动机的转速保持在恒定值。

公开(公告)号：US4002405A

公开(公告)日：1977-01-11

申请号：US564917

申请日：1975-04-03

申请人： Curt Stahl

发明人： Curt Stahl

IPC分类号： G02B7/08 ,  G02B7/10 ,  G02B15/00 ,  G03B3/00

CPC分类号： G02B7/10

摘要： A variable speed drive for controlling the movement of the zoom component of a zoom lens system such that the speed of zooming will be proportional to the amount of manual displacement of a control member. The same manually operable control member which controls the speed, the amount and the direction of zooming also controls the position of the focusing component so that focusing as well as selectively varying the speed and amount of zooming can all be effected by a single control member.

摘要翻译： 一种变速驱动器，用于控制变焦透镜系统的变焦分量的移动，使得变焦速度与控制构件的手动位移量成比例。 控制变焦速度，量和方向的相同的可手动操作的控制构件也控制聚焦组件的位置，使得聚焦以及选择性地改变变焦和变焦量都可以由单个控制构件来实现。