High strength ophthalmic lens
    11.
    发明授权
    High strength ophthalmic lens 失效
    高强度眼科镜片

    公开(公告)号:US3997250A

    公开(公告)日:1976-12-14

    申请号:US592703

    申请日:1975-07-02

    Abstract: An ophthalmic glass lens having a compressively stressed surface zone after ion exchanging which is at least 60 micrometers in depth can be formed from an alkali metal oxide silicate glass comprising by weight about 4 to about 15 percent sodium oxide, about 3 to about 15 percent potassium oxide provided the total amount of sodium, potassium and other alkali metal oxides is up to about 20 percent and about 3 to about 15 percent lanthanum oxide. The ion exchange process can take place at a temperature either above or below the strain point of conventional ophthalmic crown glass to produce satisfactory physical properties in the ophthalmic glass lens.

    Abstract translation: 具有至少60微米深度的离子交换后的压应力表面区域的眼用玻璃透镜可以由碱金属氧化物硅酸盐玻璃形成,其包含重量约4至约15%的氧化钠,约3至约15%的钾 氧化物提供钠,钾和其他碱金属氧化物的总量高达约20%和约3至约15%的氧化镧。 离子交换过程可以在高于或低于常规眼用冠状玻璃的应变点的温度下进行,以在眼镜玻璃透镜中产生令人满意的物理性质。

    Process for producing opthalmic lenses with gradated photochromic
behavior
    12.
    发明授权
    Process for producing opthalmic lenses with gradated photochromic behavior 失效
    用于生产具有渐变光致变色行为的眼镜片的方法

    公开(公告)号:US4149868A

    公开(公告)日:1979-04-17

    申请号:US880839

    申请日:1978-02-24

    Applicant: Emil W. Deeg

    Inventor: Emil W. Deeg

    CPC classification number: C03B32/00 C03C4/06

    Abstract: A method of treating ophthalmic quality lenses or lens blanks that produces a reversible progressive local variation in phototropic behavior with a continuous variation in transmissivity. The lens or lens blank is composed of a potentially phototropic glass containing all the necessary ingredients including uniformly dispersed silver halide particles therein to develop a phototropic behavior during the heat treatment of the present method. The steps of the present method include mounting the lens or lens blank in carrier means, heating the lens or lens blank thus mounted in a heat treatment furnace at a temperature sufficient to develop the phototropic behavior of the potentially phototropic glass. Characteristically the required heat treatment temperature to develop this phototropic behavior is one which exceeds the strain point of the glass but not the softening point thereof. The heat treatment includes the further step of maintaining selected portions of the lens or lens blank at a temperature to substantially inhibit the development of the phototropic behavior and thus produce a progressive gradient of transmissivity. The particular improvement of the present invention includes heat sinking the selected portion of the lens to be maintained at a temperature which substantially inhibits the development of phototropic behavior by utilizing the latent heat of transformation of a material which has at least one phase transformation temperature below the temperature required for development of phototropic behavior. This heat sinking is accomplished by positioning the heat sinking material proximate to the portion of the lens or lens blank in which the temperature is to be maintained to substantially inhibit the development of phototropic behavior. This is preferably accomplished by establishing a path of heat conduction between the heat sinking material and the selected portion of the lens or lens blank.

    Abstract translation: 一种治疗眼科质量镜片或镜片毛坯的方法,其产生具有透射性连续变化的光转变行为的可逆渐进局部变化。 镜片或镜片坯料由包含所有必需成分的潜在的光热玻璃构成,包括其中均匀分散的卤化银颗粒,以在本方法的热处理过程中产生光变特性。 本发明方法的步骤包括将透镜或透镜坯件安装在载体装置中,加热透镜或透镜坯料,使其安装在热处理炉中,其温度足以显示可能的光热变色玻璃的光变特性。 特征地,所需的热处理温度以产生该光致变色行为是超过玻璃的应变点而不是软化点的热处理温度。 热处理包括将透镜或透镜坯料的选定部分保持在基本上抑制光变性行为的发展的温度的进一步的步骤,从而产生渐进的透射率梯度。 本发明的具体改进包括将透镜的所选部分散热,以保持在基本上抑制光变性行为发展的温度,利用具有至少一个相变温度低于 发展光转化行为所需的温度。 通过将散热材料定位在靠近温度要保持的透镜或透镜毛坯的部分,从而基本上抑制光转变行为的发展来实现该散热。 这优选通过在散热材料和透镜或透镜毛坯的选定部分之间建立热传导路径来实现。

    Heat treatment method for making photochromic gradient lenses
    13.
    发明授权
    Heat treatment method for making photochromic gradient lenses 失效
    制造光致变色渐变镜片的热处理方法

    公开(公告)号:US4036624A

    公开(公告)日:1977-07-19

    申请号:US668175

    申请日:1976-03-18

    CPC classification number: C03C4/06

    Abstract: The invention achieves local variation, or a continuous gradation, in photochromic or phototropic properties across the face of glass lenses and lens blanks, especially those of ophthalmic quality. The lenses and lens blanks contain all those ingredients required to produce photochromic or phototropic behavior. They are exposed to a locally variable temperature field or environment, in such manner as to, in at least one portion of the lens or lens blank cause the temperature therein to exceed the strain point but not the softening point of the glass. In other portions of the lens or lens blank the temperature is below the strain point, thus causing development of phototropic or photochromic behavior only in those portions of the lens or lens blank exposed to the temperatures above the strain point.

    Abstract translation: 本发明实现了玻璃透镜和透镜毛坯的光学变色或光变性质的局部变化或连续的渐变,特别是眼睛质量的变化。 镜片和镜片毛坯包含产生光致变色或光变性能所需的所有成分。 它们以局部可变的温度场或环境暴露,使得在透镜或透镜坯料的至少一部分中使其中的温度超过应变点而不是玻璃的软化点。 在透镜或透镜毛坯的其他部分,温度低于应变点,因此仅在透镜或透镜毛坯暴露于高于应变点的温度的那些部分中产生光变色或光致变色行为。

    Method of making artificial intraocular lenses with holes
    15.
    发明授权
    Method of making artificial intraocular lenses with holes 失效
    制造具有孔的人造眼内透镜的方法

    公开(公告)号:US4015965A

    公开(公告)日:1977-04-05

    申请号:US642927

    申请日:1975-12-22

    CPC classification number: C03B23/22 C03B19/02 A61F2002/1686

    Abstract: Making perforate optical sections (lenses) of pseudophakoi with avoidance of drilling operations and adversities thereof. Lens material is cast over wires corresponding in diametral size and relative juxtaposition to the size and spaced locations of holes needed in a lens and the wires are etched away prior to or following final edging and surface finishing of the lens. The casting of multiple lens preforms is contemplated.

    Abstract translation: 制造pseudophakoi的穿孔光学部分(镜片),避免钻孔作业及其逆境。 透镜材料被浇铸在对应于直径尺寸的线上,并且与透镜所需的孔的尺寸和间隔位置相对并置,并且在最后磨边和透镜的表面光洁之前或之后蚀刻掉线。 考虑到多个透镜预制件的铸造。

    High strength ophthalmic lens
    16.
    发明授权
    High strength ophthalmic lens 失效
    高强度眼科镜片

    公开(公告)号:US4012131A

    公开(公告)日:1977-03-15

    申请号:US606033

    申请日:1975-08-20

    CPC classification number: C03C21/002 C03C3/078 C03C3/085 C03C3/091 Y10S501/903

    Abstract: An ophthalmic glass lens can be prepared by exposing an alkali metal silicate glass to an ion exchange process in which the glass is chemically strengthened by an exchange of potassium ions for sodium ions in the surface layer of the lens at a temperature either above or below the strain point of the glass. The glasses prepared are essentially free of alumina, have adequate strength and substantially increased depth of pentration of the neutral zone even when up to about 6 percent lime is utilized in the preparation of the glass. The effect of lime as a diffusion-retarding agent during the ion exchange process can be overcome (1) by use of an appropriate amount of zinc or magnesium oxide or mixtures thereof so as to maintain an adequate rate of diffusion during ion exchange or (2) by preparation of the glass essentially free of alumina.

    Abstract translation: 眼科玻璃透镜可以通过将碱金属硅酸盐玻璃暴露于离子交换过程来制备,其中玻璃通过在透镜的表面层中的钠离子的钾离子交换在高于或低于 玻璃应变点。 所制备的玻璃基本上不含氧化铝,具有足够的强度和显着增加的中性层的渗透深度,即使在制备玻璃时使用高达约6%的石灰。 在离子交换过程中石灰作为扩散阻滞剂的作用可以克服(1)通过使用适量的锌或氧化镁或其混合物,以便在离子交换过程中保持足够的扩散速率(2 ),通过制备基本上不含氧化铝的玻璃。

    Apparatus for supporting lenses during heat treatment
    19.
    发明授权
    Apparatus for supporting lenses during heat treatment 失效
    用于在热处理期间支撑透镜的装置

    公开(公告)号:US4227910A

    公开(公告)日:1980-10-14

    申请号:US6328

    申请日:1979-01-25

    Applicant: Emil W. Deeg

    Inventor: Emil W. Deeg

    CPC classification number: C03B35/22 C03B32/00 C03C4/04

    Abstract: Apparatus for supporting a lens during heat treatment that has a heat-sinking material in contact with one side of a heat-conductive cover and the other side of the heat-conductive cover in contact with a portion of a lens being treated to produce photochromic behavior is disclosed. The portion of the lens in contact with the heat-conductive cover exhibits less photochromic activity than the portion of the lens which is not in contact with the heat-conductive cover.

    Abstract translation: 用于在热处理期间支撑透镜的装置,其具有与导热盖的一侧接触的散热材料,并且所述导热盖的另一侧与被处理的透镜的一部分接触以产生光致变色行为 被披露。 与导热盖接触的透镜部分比不与导热罩接触的透镜部分的光致变色活性更低。

    Process for producing photochromic silicate glass film containing silver
halide particles
    20.
    发明授权
    Process for producing photochromic silicate glass film containing silver halide particles 失效
    用于制造含有卤化银颗粒的光致变色硅酸盐玻璃膜的方法

    公开(公告)号:US4076542A

    公开(公告)日:1978-02-28

    申请号:US692938

    申请日:1976-06-04

    CPC classification number: C03C4/06 G03C1/725 Y10S65/901

    Abstract: A process for producing a photochromic silicate glass film is disclosed which is characterized by the steps of forming a solution containing silver ions and a film-forming silicate monomer in a solvent common to both, removing the solvent from the solution to produce a discreet film or a film coating on an article, and exposing the formed film to a source of halide ions to form fine silver halide particles within the film.

    Abstract translation: 公开了一种制备光致变色硅酸盐玻璃膜的方法,其特征在于以下步骤:在共同的溶剂中形成含有银离子和成膜硅酸盐单体的溶液,从溶液中除去溶剂以产生离散膜或 在物品上的膜包衣,并将形成的膜暴露于卤离子源,以在膜内形成细卤化银颗粒。

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