H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/35.2
H01J 31/38 (2006.01) H01J 29/56 (2006.01) H01J 29/86 (2006.01)
Patent
CA 1226892
ABSTRACT: 6 "Television camera tube" Television camera tube comprising a tubular envelope portion (1) of glass preferably drawn on a mandril and having an internally provided conductive wall coating (6) and a diaphragm (8,20) having an aperture 9 and being supported in the envelope portion by a supporting surface (120) extending transversely to the longitudinal axis of the envelope portion, which supporting surface is formed by a substantially stops change of the internal transverse dimensions of the envelope portion, and the conductive wall coating (6) is interrupted at a disk stance from the diaphragm (8,20) extending substantially transversely to the wall coating, the stops change of the internal transverse dimensions of the envelope portion taking place in at least a first step and a second step, the first step forming the supporting surface (120) for the diaphragm, the interruption (11) in the conductive wall coating (6) being provided on a wall portion of the second step (130). If the diaphragm (20) in such a tube is a flat plate and the distance d between the first step and the second step is between 0.4 D and D, D being the inside diameter of the envelope portion between the first and the second step, the axial astigmatism occurring so far in the known tubes is avoided as a result of the diaphragm (8).
480637
N.v.philips'gloeilampenfabrieken
Van Steinburg C.e.
LandOfFree
Television camera tube does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Television camera tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television camera tube will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1205024