公开(公告)号：US5531940A

公开(公告)日：1996-07-02

申请号：US165056

申请日：1993-12-10

申请人： Amitava Gupta ,  Ronald D. Blum

发明人： Amitava Gupta ,  Ronald D. Blum

IPC分类号： B29D11/00

CPC分类号： B29D11/00903 ,  B29D11/0073

摘要： Methods for making optical quality plastics lenses with photochromic additives are described. According to a first embodiment of the invention, a casting resin is containing photochromic additives is arranged between a mold and a lens preform and then cured. According to a second embodiment of the invention, a casting resin substantially free of photochromic additives is arranged between a mold and a lens preform and then cured. The resin is then impregnated with photochromic additives. In a third embodiment, a layering resin containing a photochromic additive is provided on the surface of a mold and cured to a gel state. Then, a casting resin that is substantially free of photochromic additives is arranged between the coated mold and a lens preform and cured. According to a fourth embodiment, a casting resin that is substantially free of photochromic additive is provided on the surface of a mold and cured to a gel state. Then, a casting resin containing photochromic additives is arranged between the coated mold and a lens preform and cured.

摘要翻译： 描述了制造具有光致变色添加剂的光学优质塑料透镜的方法。 根据本发明的第一实施方案，含有光致变色添加剂的铸塑树脂被布置在模具和透镜预型件之间，然后固化。 根据本发明的第二实施方案，基本上不含光致变色添加剂的铸塑树脂被布置在模具和透镜预制件之间，然后固化。 然后用光致变色添加剂浸渍树脂。 在第三实施例中，在模具的表面上提供含有光致变色添加剂的分层树脂，并固化至凝胶状态。 然后，将基本上不含光致变色添加剂的铸塑树脂布置在涂覆的模具和透镜预制件之间并固化。 根据第四实施方案，在模具的表面上提供基本上不含光致变色添加剂的浇铸树脂，并固化至凝胶状态。 然后，将包含光致变色添加剂的铸塑树脂布置在涂覆的模具和透镜预制件之间并固化。

公开(公告)号：US5480600A

公开(公告)日：1996-01-02

申请号：US36637

申请日：1993-03-24

申请人： Amitava Gupta ,  Ronald D. Blum

发明人： Amitava Gupta ,  Ronald D. Blum

IPC分类号： G02C7/06 ,  B29D11/00

CPC分类号： B29D11/00028 ,  Y10S425/808

摘要： A method is provided for casting a progressive addition lens from: a mold incorporating a spherical portion and an add zone; a preformed lens having a convex curvature correlated with the concave curvature of the mold; and a polymerizable resin. The method includes the steps of: placing a predetermined volume of resin into a cavity of the mold; placing the preformed lens into the mold such that a layer of resin spreads out and covers any intervening space between the lens and the mold; and displacing superiorly or nasally by a predetermined magnitude the optical center of the preformed lens with respect to the geometrical center of the mold.

摘要翻译： 提供一种用于铸造渐进折射率透镜的方法，该方法包括：具有球形部分和添加区域的模具; 具有与模具的凹曲率相关的凸曲率的预成型透镜; 和可聚合树脂。 该方法包括以下步骤：将预定体积的树脂放置在模具的空腔中; 将预制的透镜放置在模具中，使得树脂层展开并覆盖透镜和模具之间的任何中间空间; 并且相对于模具的几何中心以预定的大小将预成型镜片的光学中心上移或鼻部移位。

公开(公告)号：US5406341A

公开(公告)日：1995-04-11

申请号：US980053

申请日：1992-11-23

申请人： Ronald D. Blum ,  Amitava Gupta

发明人： Ronald D. Blum ,  Amitava Gupta

IPC分类号： B29D11/00 ,  G02C7/04

CPC分类号： B29D11/00769 ,  B29D11/00086 ,  B29D11/00519 ,  G02C7/021 ,  G02C7/041 ,  G02C7/048 ,  B29L2011/0025 ,  B29L2011/0033 ,  G02C2202/20

摘要： A method for making a finished aspheric single vision, spherical or aspheric bifocal, multifocal or progressive addition contact lens includes the step of fitting a patient requiring a near correction with a single vision spherical or aspheric contact lens for optimal distance vision and comfortable fit. The patient is then over-refracted to determine the required near correction to be embodied in the contact lens. A portion of the optic corresponding to the center location of the pupil is marked on the convex side of the optic to form an optical preform. The optical preform is removed from the eye of the patient and the concave side of the optical preform is marked at a position corresponding to the mark on the convex side that denotes the center of the pupil. The mark disposed on the convex side of the optical preform is removed. A specified volume of polymerizable resin is placed in a mold embodying the required correction, which includes an add power zone so that the resin fills the intervening space between the mold and the optical preform. The add power zone is aligned on the optical preform to a predetermined position with respect to the mark on the optical preform designating the center of the pupil. The resin is then polymerized the optical preform is demolded to obtain the finished contact lens having the required correction.

摘要翻译： 用于制造成品非球面单视，球形或非球面双焦点，多焦点或渐进式附加隐形眼镜的方法包括使用单视角球形或非球面隐形眼镜拟合需要近距矫正的患者以实现最佳距离视觉和舒适贴合的步骤。 然后将患者过度折射以确定要在隐形眼镜中体现的所需的近修正。 对应于瞳孔的中心位置的光学部件的一部分被标记在光学元件的凸面上以形成光学预成型件。 光学预成型件从患者的眼睛中取出，光学预型件的凹面被标记在与表示瞳孔中心的凸面上的标记相对应的位置处。 去除设置在光学预制件的凸面上的标记。 将指定体积的可聚合树脂放置在体现所需校正的模具中，该模具包括添加功率区，使得树脂填充模具和光学预型件之间的中间空间。 附加功率区域在光学预型件上对准相对于指定瞳孔中心的光学预制件上的标记的预定位置。 然后将树脂聚合，将光学预型体脱模以获得具有所需校正的成品隐形眼镜。

公开(公告)号：US5274038A

公开(公告)日：1993-12-28

申请号：US647842

申请日：1991-01-30

申请人： Amitava Gupta

发明人： Amitava Gupta

IPC分类号： C08F8/00 ,  G02B1/04

CPC分类号： G02B1/043 ,  C08F8/00

摘要： An optical lens of an acrylic polymer having an outermost surface modified in morphology to possess desired characteristics of low surface energy and high biological inertness. The modified surface is achieved by removing only molecular level irregularities in the outermost surface of an acrylic polymer optical lens body. The surface removal and smoothing process involves the steps of surface preparation and surface passivation. In surface preparation, the surface of the lens body is treated to render it wettable by a surface passivation reagent. In surface passivation, the surface prepared optical lens body is immersed in a surface passivation reagent which removes weakly bound water molecules from the outermost surface of the lens body and reorganizes or smoothes at the molecular level irregularities at the surface of the optical lens body.

摘要翻译： 丙烯酸类聚合物的光学透镜，其具有在形态上被修饰的最外表面，以具有所需的低表面能和高生物惰性特性。 改性表面通过仅除去丙烯酸类聚合物光学透镜体的最外表面中的分子水平的不规则性来实现。 表面去除和平滑过程包括表面处理和表面钝化的步骤。 在表面处理中，透镜体的表面被处理以使其被表面钝化剂润湿。 在表面钝化中，将表面准备的光学透镜体浸入表面钝化试剂中，该表面钝化试剂从透镜体的最外表面去除弱结合的水分子，并以光学透镜体表面的分子水平的不规则性重新组织或平滑。

公开(公告)号：US5194456A

公开(公告)日：1993-03-16

申请号：US527019

申请日：1990-05-22

申请人： Amitava Gupta

发明人： Amitava Gupta

IPC分类号： G02C1/04 ,  A61F9/00 ,  C07D249/20 ,  C08F20/36 ,  C08F220/06 ,  C08K5/3475 ,  C08L33/10 ,  C09K3/00 ,  G02B1/04 ,  G02C7/04 ,  G02C7/10

CPC分类号： G02B1/043 ,  C07D249/20 ,  C08F20/36 ,  C08K5/3475 ,  Y10S514/972

摘要： The novel compound of the formula ##STR1## has been found to be useful as a UV absorber. A novel PMMA material has incorporated therein a UV absorbing amount of the novel UV absorber. Intraocular lenses and contact lenses are produced from PMMA having incorporated therein a UV absorbing amount of the novel UV absorber.Eyeglasses are produced having lenses of a polycarbonate material which has incorporated therein a UV absorbing amount of the novel UV absorbed.

公开(公告)号：US4834750A

公开(公告)日：1989-05-30

申请号：US99293

申请日：1987-09-17

申请人： Amitava Gupta

发明人： Amitava Gupta

IPC分类号： A61F2/16 ,  A61L27/00 ,  A61L27/16

CPC分类号： A61F2/16 ,  A61F2/1616 ,  A61L27/16 ,  A61L2430/16

摘要： A deformable-elastic intraocular lens comprising a deformable-elastic lens body of crosslinked acrylic material formed of copolymers of methacrylate and acrylate esters which are relatively hard and relatively soft at body temperature, crosslinked with a diacrylate ester to produce an acrylic copolymer having a substantially tack-free surface, a crosslink density of between 0.5.times.10.sup.-2 and 1.5 .times.10.sup.-2 moles per liter, and glass transition temperature in the range of -30.degree. C. to 25.degree. C., a tensile modulus between 1000 and 3000 psi and a elongation a break of 100% or greater.

公开(公告)号：US4749726A

公开(公告)日：1988-06-07

申请号：US939523

申请日：1986-12-08

申请人： Amitava Gupta ,  Ranty H. Liang ,  Andre H. Yavrouian

发明人： Amitava Gupta ,  Ranty H. Liang ,  Andre H. Yavrouian

IPC分类号： C08G64/40 ,  C08J3/28 ,  C08G61/12 ,  C08G63/46

CPC分类号： C08J3/28 ,  C08G64/40 ,  C08J2369/00 ,  Y10S522/907

摘要： A new polycarbonate copolymer resin is formed by internal generation of stabilizers bound to the polymer chain. Irradiation of a solid piece or a deoxygenated solution of the resin at a first frequency below 300 nm generates 2 to 8 mol percent of phenyl salicylate groups which are rearranged to dihydroxybenzophenone groups by irradiating the resin under oxygen excluding conditions at a second frequency from 300 to 320 nm.

摘要翻译： 通过内部产生与聚合物链结合的稳定剂形成新的聚碳酸酯共聚物树脂。 在低于300nm的第一频率下照射树脂的固体片或脱氧的溶液，通过在不同于第二频率的氧条件下将氧化苯乙酸酯基团重新排列成二羟基二苯甲酮基团，得到2-8mol％的苯基苯基苯基， 320nm。

公开(公告)号：US4262198A

公开(公告)日：1981-04-14

申请号：US61822

申请日：1979-07-30

申请人： Amitava Gupta ,  Su-Don Hong ,  Jovan Moacanin

发明人： Amitava Gupta ,  Su-Don Hong ,  Jovan Moacanin

IPC分类号： G01J5/58 ,  G01N21/17 ,  G01J1/00 ,  H01J31/50

CPC分类号： G01N21/171 ,  G01J5/58

摘要： A method and apparatus for detecting optical radiation by optically monitoring temperature changes in a microvolume caused by absorption of optical radiation to be detected. More specifically, a thermal lens-forming material is provided which has first and second opposite, substantially parallel surfaces. A reflective coating is formed on the first surface, and a radiation-absorbing coating is formed on the reflective coating. Chopped, incoming optical radiation to be detected is directed to irradiate a small portion of the radiation-absorbing coating. Heat generated in this small area is conducted to the lens-forming material through the reflective coating, thereby raising the temperature of a small portion of the lens-forming material and causing a thermal lens to be formed therein. The thus-formed thermal lens is optically detected by irradiating the thermal lens by a collimated light beam. The light beam, after having passed through the thermal lens, is reflected by the reflective coating back through the thermal lens, and directed by a beam splitter to an optical detector. In a further embodiment of the invention, the optical radiation to be detected is passed through a template, thereby defining a plurality of areas on the radiation absorbing coating to be irradiated. A corresponding template is provided in a spread, collimated light beam to define a plurality of coherent light beams, each of which passes through a thermal lens in the lens-forming material. Each beam is then reflected by the reflective coating, passes back through the thermal lens, and is directed by a beam splitter to an optical detector. The invention is particularly useful as a broadband infrared detector.

摘要翻译： 通过光学地监测由待检测的光辐射的吸收引起的微量体积的温度变化来检测光辐射的方法和装置。 更具体地，提供了具有第一和第二相对的基本上平行的表面的热透镜形成材料。 在第一表面上形成反射涂层，并且在反射涂层上形成辐射吸收涂层。 被切割的待检测的入射光辐射被照射到辐射吸收涂层的一小部分。 在该小区域产生的热量通过反射涂层传导到透镜形成材料，从而提高透镜形成材料的一小部分的温度，并在其中形成热透镜。 通过用准直光束照射热透镜来光学地检测由此形成的热透镜。 光束在穿过热透镜之后被反射涂层反射回热透镜，由光束分离器引导到光学检测器。 在本发明的另一实施例中，待检测的光辐射通过模板，从而限定待辐射的辐射吸收涂层上的多个区域。 在扩展的准直光束中提供相应的模板以限定多个相干光束，每个相干光束通过透镜形成材料中的热透镜。 然后每个光束被反射涂层反射，返回穿过热透镜，并由光束分离器引导到光学检测器。 本发明作为宽带红外探测器特别有用。

公开(公告)号：US4170685A

公开(公告)日：1979-10-09

申请号：US780007

申请日：1977-03-22

申请人： Alan Rembaum ,  Amitava Gupta ,  Willi Volksen

发明人： Alan Rembaum ,  Amitava Gupta ,  Willi Volksen

IPC分类号： B01J31/06 ,  B01J31/16 ,  B01J31/18 ,  B01J31/20 ,  C08F226/06 ,  B32B5/16 ,  C08F2/46 ,  C08F8/00 ,  C08J9/00

CPC分类号： C08F226/06 ,  B01J31/06 ,  B01J31/1658 ,  B01J31/181 ,  B01J31/20 ,  B01J2231/321 ,  B01J2531/822 ,  Y10T428/2982 ,  Y10T428/2998

摘要： Microspheres are produced by cobalt gamma radiation initiated polymerization of a dilute aqueous vinyl pyridine solution. Addition of cross-linking agent provides higher surface area beads. Addition of monomers such as hydroxyethylmethacrylate acrylamide or methacrylamide increases hydrophilic properties and surface area of the beads. High surface area catalytic supports are formed in the presence of controlled pore glass substrate.

摘要翻译： 微球通过稀释的乙烯基吡啶水溶液的钴γ射线引发聚合产生。 添加交联剂提供更高的表面积珠。 添加单体如甲基丙烯酸羟乙酯丙烯酰胺或甲基丙烯酰胺增加了珠的亲水性能和表面积。 在受控孔隙玻璃基板的存在下形成高表面积催化载体。

公开(公告)号：US09081208B2

公开(公告)日：2015-07-14

申请号：US13488064

申请日：2012-06-04

申请人： Ronald Blum ,  Amitava Gupta ,  William Kokonaski ,  Venkatramani Iyer

发明人： Ronald Blum ,  Amitava Gupta ,  William Kokonaski ,  Venkatramani Iyer

IPC分类号： G02F1/1335 ,  G02C7/08

CPC分类号： G02C7/083

摘要： An electro-active optical cell is described including a layer of electro-active material, a front glass substrate member, and a back glass substrate member. The optical cell is capable of independently providing changeable optical power with the application of an electrical potential. The cell is also configured to be affixed to an external surface of a plastic substrate and to provide the changeable optical power, with at least one of the front substrate or the back substrate of the optical cell being an outermost optical layer. The layer of electro-active material may have a thickness less than 10 μm, and the glass substrate members may each have a thickness approximately between 20 μm and 500 μm.

摘要翻译： 描述了一种电活性光电池，其包括电活性材料层，前玻璃基板部件和后玻璃基板部件。 光电池能够独立地提供具有电位的可变光功率。 电池还被配置为固定到塑料基板的外表面并且提供可变光学功率，光学单元的前基板或后基板中的至少一个是最外的光学层。 电活性材料层的厚度可以小于10μm，玻璃基板的厚度可以分别为20μm〜500μm左右。