公开(公告)号：US3810207A

公开(公告)日：1974-05-07

申请号：US24675772

申请日：1972-04-24

Applicant: BELL & HOWELL CO

Inventor： MUELLER A

IPC: G03B7/10 ,  G03B7/085 ,  G03B9/02 ,  G03B9/06 ,  G03B17/20

CPC classification number: G03B7/085

Abstract: A system for controlling and indicating the exposure condition of film in a camera. The system includes indicia means signaling the existance of an under-exposed or over-exposed condition and iris blade means and aperture control means which cooperate to expose the film in the camera during said underexposed or overexposed conditions.

Abstract translation: 用于控制和指示相机中胶片的曝光条件的系统。 该系统包括用于指示曝光不足或过度曝光的情况的存在以及虹膜刮刀装置和孔径控制装置，其在所述曝光不足或曝光过度的条件下协同曝光相机中的胶片。

公开(公告)号：US3751149A

公开(公告)日：1973-08-07

申请号：US3751149D

申请日：1972-01-03

Applicant: BELL & HOWELL CO

Inventor： MUELLER A

IPC: G03B9/10 ,  G03B1/00

CPC classification number: G03B9/10

Abstract: A shutter control system for controlling the exposure of film in a motion picture camera. The system includes shock absorbing apparatus for stopping the shutter in a selected position with minimum impact forces, and apparatus to drive the shutter to the selected position regardless of the point in the operating cycle at which the system is stopped by the camera user. The system further includes an over-center spring to eliminate camera chatter by positively locating the system components in either a run or a stopped position.

Abstract translation: 一种用于控制电影摄影机中曝光的快门控制系统。 该系统包括用于以最小的冲击力将快门停止在选定位置的减震装置，以及用于将快门驱动到所选位置的装置，而不管系统被照相机用户停止的操作周期中的点。 该系统还包括一个过中心的弹簧，以通过将系统部件置于运行或停止位置中来消除相机颤动。

公开(公告)号：US3792650A

公开(公告)日：1974-02-19

申请号：US3792650D

申请日：1972-07-31

Applicant: BELL & HOWELL CO

Inventor： MUELLER A ,  IRKFETZ D

IPC: G03B13/30 ,  G02B7/28 ,  G03B13/02 ,  G03B13/18 ,  G03B19/18 ,  G03B13/16

CPC classification number: G03B13/18

Abstract: A camera system having means for registering the focal condition of the lens system of the camera. The system includes a camera lens shiftable between multiple focus positions and a view finder for viewing the subject image sensed by the lens system. Focus indicia are arranged to be illuminated in the view finder, and masking means are provided to mask the illumination selected focus indicia in response to the focal condition of said lens system.

Abstract translation: 一种相机系统，具有用于记录相机的透镜系统的焦点状态的装置。 该系统包括可在多个焦点位置之间移动的相机镜头和用于观看由镜头系统感测到的被摄体图像的取景器。 焦点标记被布置成在取景器中被照亮，并且提供掩蔽装置以响应于所述透镜系统的焦点状况来屏蔽照明选择的焦点标记。