SYNTHETIC QUARTZ GLASS WITH RADIAL DISTRIBUTION OF FAST AXES OF BIREFRINGENCE AND PROCESS FOR PRODUCING THE SAME

    公开(公告)号:US20080292881A1

    公开(公告)日:2008-11-27

    申请号:US12182327

    申请日:2008-07-30

    Abstract: The present invention provides a synthetic quartz glass having a diameter of 100 mm or more for using in an optical apparatus comprising a light source emitting a light having a wavelength of 250 nm or less, the synthetic quartz glass having, in a region located inward from the periphery thereof by 10 mm or more in a plane perpendicular to the optical axis of the synthetic quartz glass: a birefringence of 0.5 nm or less per thickness of 1 cm with respect to a light having a wavelength of 193 nm; an OH group concentration of 60 ppm or less; an averaged differential OH group concentration from the center of the synthetic quartz glass toward a peripheral direction thereof, normalized with respect to the radius of the synthetic quartz glass, of not less than −60 ppm and less than −8 ppm; and an unbiased standard deviation σ of a differential OH group concentration from the center of the synthetic quartz glass toward a peripheral direction thereof, normalized with respect to the radius of the synthetic quartz glass, of 10 ppm or less, the unbiased standard deviation σ being determined with the following formula (1): σ = ∑ i = 1 n  ( X i - X _ ) 2 n - 1   providing ;   X i = Δ   n _ OHi Δ   r i * = n _ OHi - n _ OHi + 1 r i * - r i + 1 * : ( 1 ) differential OH group concentration at measurement point i normalized with respect to the radius R of the synthetic quartz glass; n _ OHi = n OHi - 1 + n OHi + n OHi + 1 3 : OH group concentration at measurement point i in terms of moving average for three points including the two points before and after the measurement point i; r i * = r i R : radius at measurement point i normarized with respect to the radius R of the synthetic quartz glass; X: average of OH group concentrations Xi in the whole evaluation region; and n: number of measurement points in the evaluation region (integer of 2 or more).

    Photolithography methods and systems
    135.
    发明授权
    Photolithography methods and systems 失效
    光刻方法和系统

    公开(公告)号:US06982232B2

    公开(公告)日:2006-01-03

    申请号:US10842979

    申请日:2004-05-11

    Abstract: Lithographic methods are disclosed. In one such method, a pulsed ultraviolet radiation source for producing ultraviolet lithography radiation having a wavelength shorter than about 300 nm at a fluence of less than 10 mJ/cm2/pulse and a high purity fused silica lithography glass having a concentration of molecular hydrogen of between about 0.02×1018 molecules/cm3 and about 0.18×1018 molecules/cm3 are provided. A lithography pattern is formed with the ultraviolet lithography radiation; the lithography pattern is reduced to produce a reduced lithography pattern; and the reduced lithography pattern is projected onto a ultraviolet radiation sensitive lithography medium to form a printed lithography pattern. At least one of the forming, reducing, and projecting steps includes transmitting the ultraviolet lithography radiation through the high purity fused silica lithography glass. Lithography systems and high purity fused silica lithography glass are also described.

    Abstract translation: 公开了平版印刷方法。 在一种这样的方法中,用于产生具有小于约300nm的波长的紫外光刻辐射的脉冲紫外辐射源,其注量小于10mJ / cm 2 /脉冲和高纯度熔融石英光刻 分子氢浓度在约0.02×10 18分子/ cm 3至约0.18×10 18分子/ cm 3之间的玻璃 。 用紫外光刻法形成光刻图案; 光刻图案被减少以产生减小的光刻图案; 并且将还原的光刻图案投影到紫外线照射敏感光刻介质上以形成印刷光刻图案。 形成,还原和突出步骤中的至少一个步骤包括通过高纯度熔融石英光刻玻璃传输紫外光刻辐射。 还描述了平版印刷系统和高纯度熔融石英光刻玻璃。

    Glass-body-producing method and optical glass body and optical fiber
    136.
    发明申请
    Glass-body-producing method and optical glass body and optical fiber 有权
    玻璃体制造方法和光学玻璃体和光纤

    公开(公告)号:US20050276555A1

    公开(公告)日:2005-12-15

    申请号:US11141203

    申请日:2005-06-01

    Abstract: A method produces a glass body that contains a reduced amount of OH groups in the metallic-oxide-containing glass layer and that has a reduced amount of transmission loss due to OH groups when the glass body is transformed into an optical fiber. The production method produces an optical glass body. An optical fiber contains the optical glass body in at least one part of its region for guiding a lightwave. The production method includes the following steps: (a) introducing into a glass pipe a gas containing an organometallic compound and a glass-forming material; (b) decomposing the organometallic compound into an organic constituent and a metallic constituent; (c) heating and oxidizing the metallic constituent so that produced glass particles containing a metallic oxide are deposited on the inner surface of the glass pipe to form a glass-particle-deposited layer; and (d) consolidating the deposited layer to form a metallic-oxide-containing glass layer.

    Abstract translation: 一种方法产生玻璃体,其在含金属氧化物的玻璃层中含有少量的OH基团,并且当玻璃体转变成光纤时,其具有由OH基导致的传输损失量减少的玻璃体。 该制造方法产生光学玻璃体。 光纤在其区域的至少一部分中包含用于引导光波的光学玻璃体。 制造方法包括以下步骤:(a)向玻璃管内导入含有有机金属化合物和玻璃形成材料的气体; (b)将有机金属化合物分解成有机成分和金属成分; (c)加热和氧化金属成分,使得在玻璃管的内表面上沉积含有金属氧化物的玻璃颗粒,形成玻璃颗粒沉积层; 和(d)固结沉积层以形成含金属氧化物的玻璃层。

    Method and device for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method
    137.
    发明申请
    Method and device for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method 有权
    通过使用等离子体辅助沉积法从合成石英玻璃制造空白模具的方法和装置

    公开(公告)号:US20050257570A1

    公开(公告)日:2005-11-24

    申请号:US10519016

    申请日:2003-07-07

    Abstract: The invention relates to a method for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method, according to which a hydrogen-free media flow containing a glass starting material and a carrier gas is fed to a multi-nozzle deposition burner. The glass starting material is introduced into a plasma zone by the deposition burner and is oxidized therein while forming SiO2 particles, and the SiO2 particles are deposited on a deposition surface while being directly vitrified. In order to increase the deposition efficiency, the invention provides that the deposition burner (1) focuses the media flow toward the plasma zone (4) by. A multi-nozzle plasma burner, which is suited for carrying out the method and which is provided with a media nozzle for feeding a media flow to the plasma zone, is characterized in that the media nozzle (7) is designed so that it is focussed toward the plasma zone (4). The focussing is effected by a tapering (6) of the media nozzle (7).

    Abstract translation: 本发明涉及一种通过使用等离子体辅助沉积方法由合成石英玻璃制造空白模具的方法,根据该方法,将含有玻璃原料和载气的无氢介质流供给到多喷嘴沉积 刻录机。 通过沉积燃烧器将玻璃原料引入等离子体区,并在其中氧化,同时形成SiO 2颗粒,并将SiO 2颗粒沉积在沉积表面上,同时 被直接玻璃化。 为了提高沉积效率,本发明提供了沉积燃烧器(1)将介质流聚焦到等离子体区(4)。 多喷嘴等离子体燃烧器适用于执行该方法并且设置有用于将介质流馈送到等离子体区域的介质喷嘴,其特征在于,介质喷嘴(7)被设计成使其聚焦 朝向等离子体区(4)。 聚焦由介质喷嘴(7)的锥形(6)实现。

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