Method of making laser eyewear protection
    33.
    发明授权
    Method of making laser eyewear protection 失效
    激光眼镜保护方法

    公开(公告)号:US5534041A

    公开(公告)日:1996-07-09

    申请号:US334929

    申请日:1994-11-07

    摘要: Glass articles transparent to visible radiation, but opaque to ultraviolet radiation, rendering them particularly suitable for protecting the wearer of such lenses from exposure to laser radiation in the ultraviolet regions of the electromagnetic spectrum are produced. The method involves exposing silver halide-containing glass articles to flowing hydrogen in a heat chamber operating at 375.degree.-500.degree. C. for at least four hours to produce an integral reduced layer in at least one surface of the articles of sufficient depth to prevent the transmission of ultraviolet radiation through the articles.

    摘要翻译: 产生对可见光辐射透明但对紫外线辐射不透明的玻璃制品,使得它们特别适合于保护这些透镜的佩戴者免受在电磁光谱的紫外区域的激光辐射的影响。 该方法包括将含卤化银的玻璃制品暴露于在375℃-500℃下操作的加热室中流动的氢气至少4小时,以在制品的至少一个表面上产生足够深度的整体减少层,以防止 通过物品传输紫外线。

    Optical filter glasses
    34.
    发明授权
    Optical filter glasses 失效
    滤光眼镜

    公开(公告)号:US5491117A

    公开(公告)日:1996-02-13

    申请号:US376797

    申请日:1995-01-23

    IPC分类号: C03C3/11 C03C4/08

    CPC分类号: C03C4/085 C03C3/11

    摘要: This invention is directed to the production of a silver halide-containing glass article essentially free from silver halide crystals exhibiting a bright yellow coloration which strongly attenuates the transmission of ultraviolet radiation and radiation having a wavelength up to about 450 nm, said article having an integral reduced surface layer thereon, the depth of that layer being sufficient to effectively prevent the transmission therethrough of ultraviolet radiation and radiation having a wavelength up to about 450 nm.

    摘要翻译: 本发明涉及生产基本上不含卤化银晶体的含卤化银晶体,其呈现明亮的黄色着色,其强烈地衰减紫外线辐射的透射和波长高达约450nm的辐射,所述制品具有积分 其上的表面层减小,该层的深度足以有效地防止紫外线辐射和波长高达约450nm的辐射。

    Neutral, ultraviolet absoring, fixed tint lenses
    35.
    发明授权
    Neutral, ultraviolet absoring, fixed tint lenses 失效
    中性,紫外线吸收,固定色调镜头

    公开(公告)号:US5256607A

    公开(公告)日:1993-10-26

    申请号:US982561

    申请日:1992-11-27

    摘要: A transparent glass which, at a thickness of 2 mm, does not transmit more than about 1% of ultraviolet radiation at a wavelength of 380 nm and exhibits a neutral gray, fixed tint bounded by apices A, B, C, D, A of the drawing, a purity no higher than 6, and a luminous transmittance between 10-16, said glass having a composition consisting essentially, expressed in terms of weight percent on the oxide basis, of______________________________________SiO.sub.2 65-72 CaO 0-1.5B.sub.2 O.sub.3 2-6 Al.sub.2 O.sub.3 + CaO 0.2-2.25Na.sub.2 O 6-10 As.sub.2 O.sub.3 0-0.3K.sub.2 O 10-16 Fe.sub.2 O.sub.3 4.8-6.2Na.sub.2 O + K.sub.2 O 17-23 Co.sub.3 O.sub.4 0.012-0.02K.sub.2 O:Na.sub.2 O 1.25-2.25 NiO 0.16-0.21Al.sub.2 O.sub.3 0-2.25 ZnO 0-1.5.______________________________________

    Slow fading photochromic glass
    36.
    发明授权
    Slow fading photochromic glass 失效
    慢褪色光致变色玻璃

    公开(公告)号:US5256601A

    公开(公告)日:1993-10-26

    申请号:US957359

    申请日:1992-10-07

    IPC分类号: C03C3/11 C03C4/06 C03C3/23

    CPC分类号: C03C4/06 C03C3/11

    摘要: A silver halide photochromic glass hasa. a clear luminous transmittance of about 90%,b. A darkened luminous transmittance at 20.degree. C. below about 25%.c. A fading rate at 20.degree. C. such that, after a five minute fading interval, the glass exhibits a percent faded luminous transmittance that is no more than the darkened luminous transmittance percentage plus 15. The glass has an R.sub.2 O--Al.sub.2 O.sub.3 --B.sub.2 O.sub.3 --SiO.sub.2 base composition, contains as additives, in percent by weight, 0.1-0.3% Ag, 0.25-1.0% Cl, 0-0.2% Br, 0.25-1.0% Cl+Br, the ratio of Ag:(Cl+Br) being 0.15-0.65, 0.003-0.015% CuO and 0.1-1.0% PbO and the total R.sub.2 O content is 8-13.5%, wherein R.sub.2 O consists of Li.sub.2 O+Na.sub.2 O +K.sub.2 O.