Image pickup tube with rectangular support plate for stripe filter

An image pickup tube of the type wherein a faceplate structure having a light transmitting plate provided with at least color separating stripe filter, transparent electroconductive film and photoconductive film is airtightly secured to one open end of an envelope, said faceplate structure comprising:

• a light transmitting thin glass plate comprised by the light transmitting plate;
• a rectangular color separating filter base plate deposited on one surface with the color separating stripe filter and bonded to one surface of said light transmitting thin glass plate at the central portion thereof with said color separating stripe filter opposing said light transmitting thin glass;
• a collar plate having a rectangular through hole for receiving said color separating filter base plate and bonded to the one surface of said thin glass plate with said filter base plate received in said rectangular through hole;
• and
• transparent electrode and photoconductive films deposited successively on the other surface of said light transmitting thin glass plate,
• said faceplate structure being airtightly secured to the one open end of the envelope with its other surface opposing the inside of said envelope.