摘要:
In a press molding apparatus for press molding a plurality of glass materials into a plurality of glass optical elements by the use of a pressing mold including upper and lower molds each of which has a plurality of molding surfaces, at least one of the upper and the lower molds is a heat generator within which heat is generated when the heat generator is subjected to a high-frequency induction heating by an induction heating coil. The heat generator having a plurality of shape-processed portions (130) produced by partially processing a shape of the heat generator in order that a temperature distribution of the heat generator is adjusted. The apparatus simultaneously press forms, into the glass optical elements, the glass materials supplied between the molding surfaces of the upper and the lower molds which are subjected to the high-frequency induction heating.
摘要:
In a press molding apparatus for press molding a plurality of glass materials into a plurality of glass optical elements by the use of a pressing mold including upper and lower molds each of which has a plurality of molding surfaces, at least one of the upper and the lower molds is a heat generator within which heat is generated when the heat generator is subjected to a high-frequency induction heating by an induction heating coil. The heat generator having a plurality of shape-processed portions (130) produced by partially processing a shape of the heat generator in order that a temperature distribution of the heat generator is adjusted. The apparatus simultaneously press forms, into the glass optical elements, the glass materials supplied between the molding surfaces of the upper and the lower molds which are subjected to the high-frequency induction heating.
摘要:
A press molding apparatus includes upper and lower mother molds 102 and 104. Each of the mother molds 102 and 104 has four molding surfaces arranged in a single line and satisfies the relationship given by L×α×ΔT/t
摘要翻译:压制成型装置包括上母模102和下母模104。 母模102和104中的每一个具有四条成型面,排列成一行,满足LxalphaxDeltaT / t <0.0008的关系,其中L表示长度t,厚度,α,热膨胀系数和DeltaT, 感应加热时两端厚度方向的温差。 压制成形装置可以包括压模组,其包括通过上支撑轴110a和110b附接到公共固定轴118的上母模102a和102b以及由公共驱动轴驱动的下母模104a和104b 120通过下支撑轴112a和112b。 上母模102a和102b以及下母模104a和104b分别由感应加热线圈122和124共同加热。
摘要:
A press molding apparatus includes upper and lower mother molds 102 and 104. Each of the mother molds 102 and 104 has four molding surfaces arranged in a single line and satisfies the relationship given by L×α×ΔT/t
摘要:
An optical glass comprising, in % by weight21.0 to 35.0% SiO.sub.2 ;0 to 10.0% B.sub.2 O.sub.3 ;0 to 4.0% Al.sub.2 O.sub.3 ;0.5 to 4.0% Li.sub.2 O;33.0 to 55.0% BaO+SrO+CaO+MgO+ZnO, with the proviso of19.0 to 45.0% BaO,0 to 15.0% SrO,0 to 20.0% CaO,0 to 5.0% MgO, and1.5 to 20.0% ZnO;8.0 to 23.0% La.sub.2 O.sub.3 ;2.0 to 8.0% ZrO.sub.2 ;0 to 10.0% TiO.sub.2 ;0 to 4.5% Nb.sub.2 O.sub.5 +Ta.sub.2 O.sub.5 ;0 to 5.0% WO.sub.3 ; and0 to 5.0% PbO.
摘要:
A laser medium for use in a composite slab type laser, wherein laser active layers are divided in the longitudinal direction of the laser medium by removing at least a part of a region, which is deviated from a zigzag path and a laser beam to be extracted therefrom does not pass through. Thereby amplified spontaneous emission can be weaken and parasitic oscillation can be effectively suppressed, and further laser oscillation and light amplification can be performed for a long period of time.
摘要:
A process for producing a polarizing glass containing shape-anisotropic metallic particles dispersed in an oriented state therein, which comprises drawing a glass preform containing metallic halide particles dispersed therein while its viscosity being held above 2.times.10.sup.6, but below 7.times.10.sup.7 poises; and subjecting the drawn glass to a reducing treatment so that a part or all of the metallic halide particles are reduced to metallic particles, which process enables it to produce a polarizing glass with a high yield from a starting material of a glass containing metallic halide particles, while avoiding glass to breakage or fracture during elongation as well as preventing the elongated metallic halide particles from returning to a spherical shape.
摘要:
A single mode laser glass fiber showing excellent laser oscillation characteristics even at a short fiber length can be efficiently obtained using a phosphate laser glass with excellent laser characteristics.
摘要:
Disclosed are a polarizing glass comprising a glass layer(s) which contains shape-anisotropic metallic particles dispersed therein in an oriented state and a base glass which causes substantially no light scattering, said glass layer being provided on a part or whole of at least one of faces of said base glass, which has polarizing properties comparable to conventional counterparts, a largely decreased transmission loss and a strength acceptable to practical use. Processes for the production of the polarizing glass are also disclosed.
摘要:
A laser medium for use in a slab laser having a light absorbing member provided in a region, wich is deviated from a zigzag path to be followed by a laser beam to be extracted therefrom and thus the laser beam does not pass through. Thereby, parasitic oscillation can be effectively suppressed, and laser oscillation and light amplification can be performed for a long period of time.