Abstract: A method of marking glass includes providing a glass material with a surface (201) and using a wire (210) to mark the surface. The wire is softer than the glass material and does not damage the surface of the glass material.

Abstract: An electron emitter (121, 221, 321, 421) includes an electron emitter structure (118) having a passivation layer (120, 220, 320, 420) formed thereon. The passivation layer (120, 220, 320, 420) is made from an oxide selected from a group consisting of the oxides of Ba, Ca, Sr, In, Sc, Ti, Ir, Co, Sr, Y, Zr, Ru, Pd, Sn, Lu, Hf, Re, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Th, and combinations thereof. In the preferred embodiment, the electron emitter structure (118) is made from molybdenum, and the passivation layer (120, 220, 320, 420) is made from an emission-enhancing oxide having a work function that is less than the work function of the molybdenum.

Abstract: A field emission device (100, 200) includes a cathode plate (102) having a plurality of electron emitters (532), an anode plate (104) disposed to receive electrons emitted by plurality of electron emitters (532), a frame (109) interposed between cathode plate (102) and anode plate (104) and defining a central opening (112), a mating member (110, 210, 310, 410, 510) coextensive with frame (109) and disposed within central opening (112), and a getter structure (114, 214, 314, 414, 514, 614) mated with mating member (110, 210, 310, 410, 510).

Abstract: An improved electrostatically-focused image intensifier tube, and a night vision device having such a tube, is substantially free of the spurious bright spots generally known as "PC Flash". The improved image intensifier tube includes an insulator which resists emission of electrons into the interior cavity of the tube, or a structure to capture such emitted electrons before they can fall into a microchannel plate of the tube and cause the PC Flash. A method of making such an image intensifier tube is also disclosed.