Optical glass
    1.
    发明授权
    Optical glass 失效
    光学玻璃

    公开(公告)号:US3958999A

    公开(公告)日:1976-05-25

    申请号:US538483

    申请日:1975-01-03

    摘要: A thorium oxide-free B.sub.2 O.sub.3 --La.sub.2 O.sub.3 --Gd.sub.2 O.sub.3 --Ta.sub.2 O.sub.5 system optical glass is improved in stability to devitrification and in optical constants by introducing at least one of a divalent metal oxide such as ZnO, CdO, PbO, BaO, SrO, CaO, and MgO into the optical glass composition or replacing Ta.sub.2 O.sub.5 of the optical glass composition with a divalent metal oxide. If desired, the glass may be free of CdO.

    摘要翻译: 通过引入二价金属氧化物如ZnO,CdO,PbO,BaO,SrO,CaO和至少一种,提高了不含氧化钍的B2O3-La2O3-Gd2O3-Ta2O5系统光学玻璃的耐失透性和光学常数的稳定性。 将MgO加入光学玻璃组合物中,或用二价金属氧化物代替光学玻璃组合物的Ta 2 O 5。 如果需要,玻璃可以不含CdO。

    Method of molding glass body
    3.
    发明授权
    Method of molding glass body 失效
    玻璃体成型方法

    公开(公告)号:US4778505A

    公开(公告)日:1988-10-18

    申请号:US155880

    申请日:1988-02-16

    IPC分类号: C03B11/08 C03B23/00

    摘要: According to a method of molding a glass body, a glass preform is placed between upper and lower molds of a mold assembly. The mold assembly is then heated to a predetermined heating temperature falling within a heating temperature range corresponding to a glass viscosity range of the glass preform of 10.sup.8 to 10.sup.10.5 poise. A pressure high enough to mold the glass preform is applied between the upper and lower molds when the glass preform is at the predetermined heating temperature, so that an unfinished glass molded body is formed. The pressure is released, and the unfinished glass molded body and the mold assembly are gradually cooled to a temperature within a glass viscosity range of 10.sup.11.5 to 10.sup.14 poise while the unfinished glass molded body is held in the mold assembly. A glass molded body is then released from the mold assembly.

    摘要翻译: 根据模制玻璃体的方法,将玻璃预制件放置在模具组件的上模具和下模具之间。 然后将模具组件加热到落在对应于玻璃预制件的玻璃粘度范围为108至1010.5泊的加热温度范围内的预定加热温度。 当玻璃预制件处于预定加热温度时,在上模和下模之间施加足够高的模塑玻璃预制件的压力,从而形成未完成的玻璃成型体。 释放压力,将未完成的玻璃成型体和模具组件逐渐冷却至玻璃粘度范围为1011.5〜1014泊的温度,同时将未完成的玻璃成型体保持在模具组件中。 然后将玻璃模制体从模具组件中释放出来。

    Fluorophosphate-base laser glasses
    4.
    发明授权
    Fluorophosphate-base laser glasses 失效
    氟磷酸盐基激光眼镜

    公开(公告)号:US4120814A

    公开(公告)日:1978-10-17

    申请号:US819440

    申请日:1977-07-27

    CPC分类号: C03C3/247 C03C4/0071

    摘要: A fluorophosphate-base laser glass having a low non-linear refractive index coefficient and a low liquid phase temperature and comprising a glass composed of 5 to 25% 1/2P.sub.2 O.sub.5 and the remainder of metal fluorides and 0.01 to 3% 1/2Nd.sub.2 O.sub.3 being incorporated into the glass, and more particularly a fluorophosphate-base laser glass comprising 5 to 25% 1/2P.sub.2 O.sub.5, 20 to 35% AlF.sub.3, 0 to 5% YF.sub.3, 22 to 55% BaF.sub.2 +SrF.sub.2 +CaF.sub.2 +MgF.sub.2, 0 to 25% NaF+LiF+KF and 0.01 to 3% 1/2Nd.sub.2 O.sub.3, all % being cationic %.

    摘要翻译: 具有低非线性折射系数和低液相温度的氟磷酸盐基激光玻璃,其包含由5至25%1 / 2P 2 O 5和其余金属氟化物和0.01至3%1 / 2Nd 2 O 3组成的玻璃。 更优选为含有5〜25%1 / 2P2O5,20〜35%AlF3,0〜5%YF3,22〜55%BaF2 + SrF2 + CaF2 + MgF2,0〜25%的氟磷酸盐基激光玻璃, NaF + LiF + KF和0.01〜3%1 / 2Nd2O3,全部为阳离子%。

    Method of molding optical lenses
    7.
    发明授权
    Method of molding optical lenses 失效
    光学镜片成型方法

    公开(公告)号:US4738703A

    公开(公告)日:1988-04-19

    申请号:US865590

    申请日:1986-05-21

    IPC分类号: C03B23/00 C03B11/00 C03B11/08

    摘要: Optical lenses high in configurational accuracy with smooth surfaces are press molded in a carefully finished, polished and properly dimensioned mold preferably in a non-oxidizing atmosphere. The molding operation includes placing a quantity of glass having an internal viscosity of at least about 10.sup.6 poises in such a mold while maintaining the mold at a temperature at least equal to the glass transition temperature and thereafter passing the glass into a lens of predetermined configuration at a pressure of at least 100 Kg/cm.sup.2. Performing procedures are also disclosed.

    摘要翻译: 具有光滑表面的配置精度高的光学透镜优选在非氧化性气氛中以精心制作,抛光和适当尺寸的模具进行压制成型。 模制操作包括将一定量的具有至少约106泊的内部粘度的玻璃放置在这种模具中,同时将模具保持在至少等于玻璃化转变温度的温度,然后将玻璃进入预定构型的透镜 至少100Kg / cm 2的压力。 还公开了执行程序。

    Method of preventing tarnishing of polished glass articles
    8.
    发明授权
    Method of preventing tarnishing of polished glass articles 失效
    防止抛光玻璃制品变色的方法

    公开(公告)号:US4277523A

    公开(公告)日:1981-07-07

    申请号:US758272

    申请日:1977-01-10

    CPC分类号: B65D81/2007

    摘要: A method of preventing tarnishing of a polished glass article comprising storing the polished glass article under a reduced pressure of less than 10.sup.-2 mm Hg before applying a metal, a metal oxide or fluoride coating to the surface of the polished glass.

    摘要翻译: 一种防止抛光的玻璃制品的损坏的方法,包括在抛光玻璃的表面上施加金属,金属氧化物或氟化物涂层之前,在小于10-2mm Hg的减压下储存抛光的玻璃制品。

    Reversible light sensitive glass
    9.
    发明授权
    Reversible light sensitive glass 失效
    可反光敏感玻璃

    公开(公告)号:US4001019A

    公开(公告)日:1977-01-04

    申请号:US457304

    申请日:1974-04-02

    摘要: A reversible light sensitive glass comprising 100 parts of a base glass, 0.15 to 1.0 parts of Ag and an amount of halogen corresponding to or more than to the chemical equivalence of Ag, in which the base glass consists of, by weight %, SiO.sub.2 48 to 62, Al.sub.2 O.sub.3 7 to 15, B.sub.2 O.sub.3 17 to 26, R.sub.2 O (where R represents Na, Li or K) 6 to 16, BaO 0.5 to 5, (BaO/R.sub.2 O 0.05 to 0.40), TiO.sub.2 0 to 10, ZrO.sub.2 0 to 10, Nb.sub.2 O.sub.5 0 to 5, TiO.sub.2 +ZrO.sub.2 +Nb.sub.2 O.sub.5 0.5 to 15, AS.sub.2 O.sub.3 0 to 2.0, and Sb.sub.2 O.sub.3 0 to 2.0 (AS.sub.2 O.sub.3 +Sb.sub.2 O.sub.3