公开(公告)号：US3909841A

公开(公告)日：1975-09-30

申请号：US40362573

申请日：1973-10-04

Applicant: VOCKENHUBER KARL

Inventor： HOLLER HERMANN ,  PAMMER GOTTFRIED

IPC: G03B31/02 ,  G11B15/04 ,  G11B15/10 ,  G11B15/34 ,  G11B19/02

CPC classification number: G11B15/34 ,  G03B31/02 ,  G11B15/04 ,  G11B15/10

Abstract: A sound recorder and reproducer, e.g., as used in combination with a motion-picture projector, can be placed in a recording mode by the operation of a record key and the setting of a switch-control member. The record key, when operated, or an actuating element displaceable thereby remains locked for at least a limited time to facilitate initiation of sound recording by a subsequent setting of the control member which preserves the enabling position until this member has been reset. The control member, which may be a pushbutton or a knob serving to start the film drive of the projector while completing the recording circuit, either blocks the return of the displaced actuating element by a delayed-action restoring mechanism or acts through a one-way coupling upon a detent for the record key to deactivate same on its resetting stroke.

Abstract translation: 可以通过记录键的操作和开关控制构件的设置将例如与运动图像投影仪结合使用的录音机和再现器置于记录模式。 记录键在操作时或者由此可移动的致动元件保持锁定至少有限的时间，以便通过控制构件的后续设置启动声音记录，保持启用位置，直到该构件已被复位。 控制构件，其可以是用于在完成记录电路的同时启动投影机的胶片驱动的按钮或旋钮，或者通过延迟动作恢复机构阻止移动的致动元件的返回或者通过单向 在记录键的制动器上耦合以在其复位行程上停用它。

公开(公告)号：US3587431A

公开(公告)日：1971-06-28

申请号：US3587431D

申请日：1969-05-20

Applicant: VOCKENHUBER KARL ,  HAUSER RAIMUND

Inventor： HOLLER HERMANN

IPC: G03B17/02 ,  G03B3/00

CPC classification number: G03B17/02

Abstract: A CAMERA HAVING AN OBJECTIVE AND FOCUSING MECHANISM FOR THE OBJECTIVE. A DIAPHRAGM IS SITUATED WITHIN THE OBJECTIVE AND IS ADJUSTABLE WITH RESPECT TO THE BRIGHTNESS OF THE SCENE TO BE TAKEN. A VIEWFINDER SYSTEM AND AT LEAST FIRST AND SECOND INDICATORS ARE VISIBLE IN THE VIEWFINDER. AN ADJUSTING DEVICE FOR AT LEAST ONE OF THE INDICATORS IN ARRANGED TO VARY THE DISTANCE BETWEEN THE INDICATORS. THE DISTANCE DEFINES A SECTION F LINE VISIBLE IN THE VIEWFINDER. THE SECTION OF LINE CORRESPONDS TO A PERSPECTIVE REPRODUCTION OF A FICTITIOUS SECTION OF LINE OF KNOWN SIZE. THE FICTITIOUS SECTION OF LINE IS SUPPOSED TO BE SITUATED ON ONE OF THE LIMITS OF THE DEPTH OF FIELD. A CALCULATING MECHANISM IS PROVIDED FOR COMPUTING THE DEPTH OF FIELD AND THE LENGTH OF THE DISTANCE FROM A GIVEN SET OF VALUES AND CONTROLLING THE ADJUSTING MECHANISM ACCORDINGLY. THE VALUES DETERMINE AT LEAST ONE LIMIT OF THE DEPTH OF FIELD AND COMPRISES AT LEAST THE DIAPHRAGM APERTURE AND THE SETTING OF THE FOCUSING MECHANISM.