公开(公告)号：US3582210A

公开(公告)日：1971-06-01

申请号：US3582210D

申请日：1968-12-10

Applicant: JACK D JONES

Inventor： JONES JACK D

IPC: G01J1/00 ,  G01J1/42 ,  G07C3/00 ,  G01N21/00

CPC classification number: G01J1/00 ,  G01J1/42 ,  G07C3/00

Abstract: An illumination plotter for plotting illumination characteristics of thoroughfare lighting systems including a vehicle, an adjustable length, horizontally extending, supporting bar mounted on the top of said vehicle, and a pair of light intensity sensing devices mounted on opposite ends of the supporting bar. The sensing devices are connected to an amplifier carried in the vehicle, and the amplifier is connected to a recording system. The sensing devices each have convex, upwardly facing light-sensitive surfaces to obtain maximum exposure to light emanating from above.