Fast-fading index-corrected photochromic glass compositions
    14.
    发明授权
    Fast-fading index-corrected photochromic glass compositions 失效
    快速褪色指数校正光致变色玻璃组合物

    公开(公告)号:US3957499A

    公开(公告)日:1976-05-18

    申请号:US522494

    申请日:1974-11-11

    CPC分类号: C03C4/06 Y10S501/90

    摘要: Photochromic glasses having index of refraction values (n.sub.D) in the range from 1.52-1.54, compositions comprising, in weight percent, about 49-60% SiO.sub.2, 2-9% Al.sub.2 O.sub.3, 15-18% B.sub.2 O.sub.3, 6-12% Na.sub.2 O, 9-18% ZrO.sub.2, 0.5-0.9% Ag, 0.5-0.8% Cl, 0.010-0.030% CuO, 0.5-1% PbO, and 1-2% F, and rapid fading characteristics such that at least about 65% of the optical density gained during darkening is lost within a five-minute fading interval, are disclosed.

    摘要翻译: 折射率值(nD)在1.52-1.54范围内的光致变色玻璃,组合物包含重量百分比为约49-60%SiO 2,2-9%Al 2 O 3,15-18%B 2 O 3,6-12%Na 2 O, 9-18%ZrO 2,0.5-0.9%Ag,0.5-0.8%Cl,0.010-0.030%CuO,0.5-1%PbO和1-2%F,以及快速褪色特性,使得至少约65% 公开了在5分钟的衰落间隔期间在变暗期间获得的光密度损失。

    Method of making protective filter lens
    15.
    发明授权
    Method of making protective filter lens 失效
    制作防护镜的方法

    公开(公告)号:US06363748B1

    公开(公告)日:2002-04-02

    申请号:US09714083

    申请日:2000-11-16

    IPC分类号: C03C1900

    CPC分类号: G02C7/102

    摘要: An ophthalmic, protective, filter lens, and a method of producing such lens, the lens having a ratio of Z and Y tristimulus values between 0.25-0.40, a dominant wavelength between 570-580 nm. on a color mixture diagram, a sharp transmission drop between 450-500 nm. and a transmission not over 30% between 400-450 nm. The lens is produced by firing a silver halide-containing, photochromic glass lens in a hydrogen-containing atmosphere within a temperature range of 465° C. to 495° C. for less than 20 minutes.

    摘要翻译: 一种眼科,保护性的滤光镜,以及这种透镜的制造方法,该透镜的Z和Y三刺激值之比在0.25-0.40之间,主波长在570-580nm之间。 在彩色混合图上,在450-500nm之间的急剧变化下降。 在400-450nm之间的透射率不超过30%。 通过在含氢气氛中在465℃至495℃的温度范围内烧制含卤化银的光致变色玻璃透镜不到20分钟来制造透镜。

    Protective filter lens
    16.
    发明授权
    Protective filter lens 失效
    保护滤镜

    公开(公告)号:US06197711B1

    公开(公告)日:2001-03-06

    申请号:US09299445

    申请日:1999-04-26

    IPC分类号: C03C406

    CPC分类号: G02C7/102

    摘要: An ophthalmic, protective, filter lens, and a method of producing such lens, the lens having a ratio of Z and Y tristimulus values between 0.25-0.40, a dominant wavelength between 570-580 nm. on a color mixture diagram, a sharp transmission drop between 450-500 nm. and a transmission not over 30% between 400-450 nm.

    摘要翻译: 一种眼科,保护性的滤光镜,以及这种透镜的制造方法,该透镜的Z和Y三刺激值之比在0.25-0.40之间,主波长在570-580nm之间。 在彩色混合图上,在450-500nm之间的急剧变化下降。 在400-450nm之间的透射率不超过30%。

    Photochromic glass and lens
    17.
    发明授权
    Photochromic glass and lens 失效
    光致变色玻璃和镜头

    公开(公告)号:US6165922A

    公开(公告)日:2000-12-26

    申请号:US391744

    申请日:1999-09-08

    IPC分类号: C03C3/064 C03C3/11 C03C4/06

    CPC分类号: C03C4/06 C03C3/064 C03C3/11

    摘要: A fixed tint, photochromic glasses and sunglass lenses produced therefrom. The glasses have R.sub.2 O--Al.sub.2 O.sub.3 --B.sub.2 O.sub.3 --SiO.sub.2 base compositions, contain silver chloride and bromide contents as photochromic constituents and 0.22-0.38% NiO and 0.034-0.060% CoO, both by weight percent, as glass colorants, the NiO:CoO ratio being in the range of 5.5-7.2:1.

    摘要翻译: 由其制成的固定色调,光致变色眼镜和太阳镜。 该玻璃具有R2O-Al2O3-B2O3-SiO2基础组合物,其中含有氯化银和溴化物含量作为光致变色组分,并且以重量百分数为0.22-0.38%NiO和0.034-0.060%CoO作为玻璃着色剂,NiO:CoO比为 在5.5-7.2:1的范围内。

    Glasses for laser protection
    18.
    发明授权
    Glasses for laser protection 失效
    眼镜用于激光保护

    公开(公告)号:US5729381A

    公开(公告)日:1998-03-17

    申请号:US555652

    申请日:1995-11-13

    摘要: This invention is directed to the production of cuprous halide- or a cuprous-cadmium halide-containing glass articles which are essentially completely opaque to ultraviolet radiation and can be essentially completely opaque to radiation within the region of wavelengths of up to 550 nm, but are transparent to visible radiations having a wavelength longer than the radiation within the region of opacity. The method involves exposing the glass articles to a hydrogen gas-containing atmosphere at a temperature between about 375.degree.-500.degree. C. for a period of at least 18 hours to develop an integral reduced layer in at least one surface of the article having a depth effective to prevent the transmission of ultraviolet radiation and radiation having a wavelength up to 550 nm through the article.

    摘要翻译: 本发明涉及生产用于紫外线辐射基本上完全不透明的卤化亚铜或含卤化镉卤化物的玻璃制品,并且可以对波长高达550nm的区域内的辐射基本上完全不透明,但是 对于具有比不透明度区域内的辐射更长的波长的可见光辐射是透明的。 该方法包括在约375-500℃的温度下将玻璃制品暴露于含氢气的气氛中至少18小时的时间,以在制品的至少一个表面上形成整体的还原层,其具有 深度有效地防止紫外线辐射和波长高达550nm的辐射穿过物品。

    Making colored photochromic glasses
    19.
    发明授权
    Making colored photochromic glasses 失效
    制作彩色光致变色眼镜

    公开(公告)号:US4979976A

    公开(公告)日:1990-12-25

    申请号:US509350

    申请日:1990-04-16

    CPC分类号: C03C4/06

    摘要: This invention is directed to a method for making tinted photochromic glass articles having an integral reduced surface layer exhibiting color, the glass utilizing silver halide crystals as the photochromic agent. The method generally comprises heat treating the glass article in a heating chamber in an atmosphere of flowing hydrogen at temperatures below 500.degree. C. The specific steps of the inventive method comprise:(a) initially flowing hydrogen gas into said heat treating chamber at a sufficiently rapid rate to essentially instantaneously fill said chamber with the gas;(b) immediately thereafter decreasing the flow of said the hydrogen gas to permit careful control of the rate at which reduction takes place in the glass surface; and(c) continuing that gas flow for a sufficient length of time to produce an integral reduced surface layer on both front and back surfaces of the article having a combined depth effective to exhibit a color, but not of such individual depth as to prevent the passage of ultraviolet radiation through the front surface of the article.

    Heat treatment of flat photochromic sheet glass
    20.
    发明授权
    Heat treatment of flat photochromic sheet glass 失效
    平面光致变色玻璃板的热处理

    公开(公告)号:US4786305A

    公开(公告)日:1988-11-22

    申请号:US80903

    申请日:1987-08-03

    CPC分类号: C03C4/06 C03B32/00 C03B35/202

    摘要: This invention is directed to a method for heat treating a sheet of a potentially photochromic glass to cause the growth of silver halide crystals therein which impart photochromic properties thereto, wherein the heat treated sheet will be essentially free from thermal deformation and surface defects, and the photochromic properties exhibited therein will be essentially uniform across the area of the sheet. The method involves first placing a sheet of potentially photochromic glass on top of a sheet of carrier glass that exhibits a softening point at least 50.degree. C. higher than the temperature at which the potentially photochromic glass will be heat treated, and thereafter subjecting the stacked sheets to the heat treatment temperature desired for growing silver halide crystals in the glass.