TH66071A - Optical glass, preformed with precision compression And a way to produce the same thing, optical parts And the same production method - Google Patents

Abstract

DC60 (01/06/53) given is the optical glass shown. Refractive index (nd) in the range 1.75 to 1.87, Abbe number (Vd) in the range 30 to 45, and excellent low temperature softening properties. Even when excluding Ta2O5 including giving Low production costs, precision-pressed preforms And the optical parts that comprise Such a glass; Methods of producing preforms; And methods of manufacturing optical components That optical glass Include, as percent by mole, 30 to 45 percent of B2O3,2 to 15 percent of SiO2, 10 to 20 percent of La2O3, 1 to 10 percent of TiO2, 10 to 30 percent of ZnO, 2 to 15 percent of Li2O, greater than 0 percent and 10 percent or less of WO3, 0 to 15 percent of Nb2O5, and 0 to 10 percent of ZrO2, whose overall content is Above 95%, the glass shows the refractive index (nd) in the range 1.75 to 1.87 and the Abbe number (Vd) in the range 30 to 45. Light is composed of that glass. In a method of manufacturing preforms that are pressed with precision, an optical glass composite preform is produced. A method of manufacturing optical components using precision pressed preforms. Provided is the optical glass shown Refractive index (nd) in the range 1.75 to 1.87, Abbe number (Vd) in the range 30 to 45, and excellent low temperature softening properties. Even when excluding Ta2O5 including giving Low production costs, precision-pressed preforms And the optical parts that comprise Such a glass; a method of preform manufacturing; and a method of making an optical part. Including, as percent by mole, 30 to 45 percent of B2O3,2 to 15 percent of SiO2,10 to 20 percent of La2O3,1 to 10 percent of TiO2,10 to 30 percent of ZnO, 2 to 15 percent of Li2O, above 0 percent and 10 percent or less of WO3,0 to 15 percent of Nb2O5, and 0 to 10 percent of ZrO2, in which the overall volume of the element As mentioned above, above 95 percent, that glass represents. Refractive index (nd) in the range 1.75 to 1.87 and Abbe number (Vd) in the range 30 to 45 Precise compression preforms and optical components consisting of glass. In a method of producing compressed preforms with precision presses, the Optical glass preforms are formed. Methods of manufacturing optical components Use compressed preforms Model with precise press

Claims (1)

1.Optical glass consisting of, as percent by mole, 30 to 45 percent of B2O3, 2 to 5 percent of SiO2, 10 to 20 percent of La2O3, 1 to 10 percent of TiO2, 10 to 30 percent of ZnO. , 2 to 15 percent of Li2O, above 0 percent and 10 percent or less of WO3, 0 to 15 percent of Nb2O5, and 0 to 10 percent of ZrO2, where the overall content of B2O3, SiO2, La2O3, TiO2, ZnO, Li2O, WO3, Nb2O5, and ZrO2 is higher. 95 percent, and the glass shows the refractive index (nd) in the range 1.75 to 1.87 and the Abbe number (Vd) ranges from 30 to 45 2. The optical glass according to claim 1, where the glass shows the transition temperature ( Tg) 580 ํ or less 3. Precision Compression Preform. Which consists of optical glass according to one of the above Of Claims No. 1 to No. 2 4. .. Preform for compression by precise press according to the claim clause 3, which produces the entire surface of the preform by hardening the molten glass as it is. 5. Compression preform with precision press according to the claim clause. 3, which the entire surface of the preform Includes free surface. 6. Method of production of precision compression preforms, in which the preset weight is separated. Face of molten glass Out of the molten glass flow that flows from the outflow tube. To create preforms that are compressed with precision press In accordance with Clause 3. 7. Optical parts composed of optical glasses in accordance with any one of Clause 1 to Clause 2. 8. Optical parts obtained by precision compression molding. Pressed preforms Precise according to any of the claims 3 to 5 or the precision press preform. Caused by the manufacturing method in accordance with Clause 6 9. Methods of manufacturing optical parts. Which makes the preforms that are pressed with precision hot pressing, softening and compressing with precision pressing To form optical glass components, which use compression preforms With precise press according to any of the claims 3 to 5 or preform Precise press produced by the method of manufacturing in accordance with claim 6 1 0. Method of manufacturing optical parts according to claim 9, in which the preform is pressed with a precise press into the template. Press style And then hot the preform together with the press template to perform the compression with precision press 1 1. Method of producing the PRECISION PRESS PRESS 10, which makes the compression preform with the precision press preform before importing the press template.