Back to results
US 4,385,312 AGranted
Single image pickup tube type color television camera system
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorsHisashi Kanai, Harukichi Nagai
Life of this patent
Estimating the term…
Abstract
In a single image pickup tube color television camera, color shading is corrected by providing a magnetic material selectively disposed adjacent a magnetic field electron beam alignment means disposed adjacent said image pickup tube in the vicinity of the tube control electrode.
Claims8
A single image pickup tube type color television camera system comprising:
- an electrostatic focusing and electromagnetic deflection type image pickup tube including an electron beam control electrode and a plurality of focusing electrodes;
- electron beam alignment means for producing a magnetic field disposed adjacent said image pickup tube in the vicinity of said control electrode;
- deflection means disposed adjacent said tube and apart from said alignment means along the longitudinal axis of said tube;
- means for correcting color shading comprised of a magnetic material selectively disposed adjacent said tube in the vicinity of said beam alignment means;
- and
- said means for correcting color shading having a magnetic field intensity to effect some portion of the magnetic field of said beam alignment means thereby reducing color shading effects.
3 more elements
Dependencies are inferred from the claim text.