公开(公告)号：US3636255A

公开(公告)日：1972-01-18

申请号：US3636255D

申请日：1968-08-09

Applicant: KDI CORP

Inventor： GADDY OSCAR L ,  HOLONYAK NICK JR ,  SIRKIS MURRAY D ,  BAIRD JACK R

IPC: G01J3/28 ,  H04N1/38 ,  H04N7/18

CPC classification number: G01J3/28

Abstract: A real time display of the optical spectrum of an incident beam of electromagnetic radiation is obtained by dispersing the beam into its component frequencies and focusing the dispersed component frequencies onto the face of a video pickup camera. Two different focal lengths are used for the dispersion means to provide either a complete optical spectrum or a partial optical spectrum on the face of the camera. The camera is scanned horizontally with each horizontal scan being displaced vertically to form a raster pattern scan even though the optical pattern on the camera face does not vary in the vertical direction. This provides greatly increased sensitivity and allows a narrower bandwidth video amplifier. The output of the amplifier and the horizontal scan control signals are applied to an auxiliary oscilloscope which displays the optical spectrum in an X-Y pattern.