Laser cathode-ray tube

A laser cathode ray tube comprising:

• an electron gun having a cathode for generating an electron beam;
• a laser screen having a laser target;
• a focusing system for focusing the electron beam on the laser target;
• a deflection system for deflecting the electron beam;
• and
• a cooling system for cooling the laser target, wherein the cathode is connected to ground potential, and the laser target is electrically connected to a source of high positive potential and includes transparent dielectric substrate constituting an isolator electrically isolating the laser target from the cooling system, the laser target being fixed to one surface of the substrate, while the cooling system is connected to the other surface of the substrate, and wherein the cooling system is thermally connected to a periphery of the substrate face with a metal flange as an intermediary.

A laser cathode ray tube (CRT) comprising:

• an electron gun having a cathode for generating an electron beam;
• a laser screen having a laser target;
• a focusing system for focusing the electron beam on the laser target;
• a deflection system for deflecting the electron beam;
• and
• a cooling system for cooling the laser target, wherein the cathode is connected to ground potential and the laser target is electrically connected to a source of high positive potential electrically connected to the laser target via a conductive cylinder made of non-magnetic material and positioned co-axially with the CRT.

A laser cathode ray tube comprising:

• an electron gun having a cathode for generating an electron beam;
• a laser screen having a laser target;
• a focusing system for focusing the electron beam on the laser target;
• a deflection system for deflecting the electron beam;
• and
• a cooling system for cooling the laser target, wherein the cathode and the cooling system are respectively connected to a first potential and the laser target is connected to a second potential, said first potential being ground and said second potential being positive with respect to said first potential.

A laser cathode ray tube comprising:

• an electron gun having a cathode for generating an electron beam;
• a laser screen having a laser target;
• a focusing system for focusing the electron beam on the laser target;
• a deflection system for deflecting the electron beam;
• and
• a cooling system for cooling the laser target, wherein the cathode is adapted for connection to a first potential and the laser target is adapted for connection to a second potential, said second potential being positive with respect to said first potential, the laser target being isolated by an electrical isolator from the cooling system, the laser screen including a transparent dielectric substrate comprising the electrical isolator, the laser target being fixed to one surface of the transparent dielectric substrate, while the cooling system is connected to another surface of the transparent dielectric substrate, the cooling system being thermally connected to a periphery of said another surface of the transparent dielectric substrate with a metal flange as an intermediary.

A laser cathode ray tube comprising:

• an electron gun having a cathode for generating an electron beam;
• a laser screen having a laser target;
• a focusing system for focusing the electron beam on the laser target;
• a deflection system for deflecting the electron beam;
• a cooling system for cooling the laser target, wherein the cathode is adapted for connection to a first potential and the laser target is adapted for connection to a second potential, said second potential being positive with respect to said first potential;
• and
• a source for said second potential, said source being electrically connected to the laser target via a conductive cylinder comprising a non-magnetic material, the conductive cylinder being positioned co-axially with the laser cathode ray tube, wherein the conductive cylinder has an edge contacting the laser target and at least one contact spring.

A laser cathode ray tube (CRT) comprising:

• an electron gun having a cathode for generating an electron beam;
• a laser screen having a laser target;
• a focusing system for focusing the electron beam on the laser target;
• a deflection system for deflecting the electron beam;
• and
• a cooling system for cooling the laser target, wherein the cathode is connected to ground potential and the laser target is electrically connected to a source of high positive potential, the source of high positive potential being electrically connected to the laser target via a conductive cylinder made of non-magnetic material, the conductive cylinder positioned co-axially with the CRT, wherein the CRT comprises a dielectric cylinder having a greater diameter than that of the conductive cylinder and enclosing a portion of the conductive cylinder, the dielectric cylinder being fixed on the substrate.