PIN-HOLE PLATE

• Main Authors: TATARINTSEV BORIS VASIL'EVICH, BELIKOVA NATAL'JA GEORGIEVNA, IVANOV VLADIMIR NIKOLAEVICH, POLUKHIN VLADIMIR NIKOLAEVICH, PONOMAREVA VALENTINA ALEKSEEVNA
• Format: Patent
• Language: English; Russian
• Published: 10.01.2007
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

FIELD: optical and electronic industries; production of special optical glass for manufacture of pin-hole amplifiers-pin-hole plates. ^ SUBSTANCE: provision is made for enhancing chemical stability of active envelope glass and reducing crystallization ability of active envelope glass and soluble core, as well as increase of softening temperature and enhanced alignment of glass by viscosity and thermal expansion. Pin-hole plate is made from glass fibers containing active envelope made from glass of the following composition: SiO2, PbO, Bi2O3, Sb2O3, As2O3, at least one oxide from group TiO2, ZrO2, Nb2O5, WO3 ZnO, SrO and at least one oxide from group Al2O3, B2O3, K2O, Rb2O Cs2O at the following composition of components, mass-%: SiO2,49-70; PbO, 10-27; B2O3, 0.5-4; Al2O3,0.56-8; MgO, CaO, SrO, BaO, 1-13; ZnO, 1-11; TiO2, 1-8; ZrO2, 0.5-5; Nb2O5, WO3, 0.5-3; K2O,1-11; Rb2O, 0.4-3; Cs2O, 0.4-2; Bi2O3, 0.1-2; As2O3, 0.1-0.6; Sb2O3, 0.05-0,6; pin-hole plate contains also soluble core made from glass of the following composition, mass-%: SiO2, 6-51; B2O3, 15-74; at least one oxide of group Al2O3, La2O3, 0.5-7; at least one oxide of group As2O3, SB2O3, 0.1-0.6, as well as at least one oxide of group BaO, SrO, CaO, MgO, ZnO at the following content: BaO, 0.5-32; SrO, 1-22; CaO, 1-16; MgO, 1-12; ZnO, 0.5-16. ^ EFFECT: improved service characteristics and protracted service life of pin-hole plate. ^ 3 cl, 2 tbl