公开(公告)号：US3727056A

公开(公告)日：1973-04-10

申请号：US3727056D

申请日：1972-03-03

Applicant: ELECTRO SIGNAL LAB

Inventor： ENEMARK R

IPC: G01N21/25 ,  G08B17/107 ,  G01N21/26

CPC classification number: G08B17/107 ,  G01N21/255 ,  G08B17/113

Abstract: A smoke detector with a ribbon of light from a linear array of light emitting diodes directed to an intersection with a ribbonlike path of view of an optically parallel photobar intersecting the light ribbon. A constant current source supplies low current to the diodes.

Abstract translation: 烟雾探测器，其具有来自发光二极管的线性阵列的光带，其指向与光带相交的光学平行光栅的带状视线的交点。 恒流源为二极管提供低电流。