公开(公告)号：US3608454A

公开(公告)日：1971-09-28

申请号：US3608454D

申请日：1968-06-27

Applicant: POLAROID CORP

Inventor： SHENK EDWIN K

IPC: G03B17/52 ,  G03D13/00

CPC classification number: G03B17/52 ,  G03D13/007

Abstract: A TIMER-ANNUNCIATOR SYSTEM FOR USE WITH PHOTOGRAPHIC CAMERAS OF THE SELF-DEVELOPING VARIETY. THE DEVICE FUNCTIONS TO ENERGIZE A WARNING LIGHT CONTINUOUSLY DURING THE FILM DEVELOPING-IMBIBITION PROCESS INTERVAL AND TO SOUND AN AUDIBLE ALARM AT THE CONCLUSION OF THE INTERVAL. FOLLOWING THE AUDIBLE ALARM, THE ELECTRONIC CIRCUITRY OF THE SYSTEM IS AUTOMATICALLY DE-ACTIVATED.

公开(公告)号：US3930184A

公开(公告)日：1975-12-30

申请号：US42696773

申请日：1973-12-20

Applicant: POLAROID CORP

Inventor： BIBER CONRAD H ,  SHENK EDWIN K

IPC: G03B15/04 ,  H05B39/00

CPC classification number: G03B15/04

Abstract: An electronic flash system for an automatic camera adapted for use with sequential arrays of flashlamps and having a distributing network for sequentially firing the lamps, one for each exposure. An accessory strobe unit is provided that comprises a photocoupled trigger unit and an impedance network that simulates the impedance seen by the camera during the operation of the flashlamp array.

Abstract translation: 一种用于自动相机的电子闪光灯系统，其适用于闪光灯的顺序阵列，并具有用于顺序地点燃灯的分配网络，每个曝光一个。 提供了一种附件选通单元，其包括光耦合触发单元和阻抗网络，其模拟在闪光灯阵列的操作期间由相机看到的阻抗。