Abstract:
A process for producing a quartz glass member, wherein a sample from a quartz glass base material is exposed to F2 laser under given conditions and whether or not the peak intensity of H2 Raman scattering radiation is decreased by 80% or more from the peak intensity of H2 Raman scattering radiation with respect to a sample not exposed to F2 laser is judged. When the decrease of the peak intensity of H2 Raman scattering radiation is less than 80%, the laser resistance of the quartz glass base material is judged as being satisfactory, and a synthetic quartz glass member is worked from the base material. The compaction of the sample is also measured.
Abstract:
A method of selectively removing a functional organic coating from a substrate by exposure of the coating to short wavelength ultraviolet light. The UV light utilized in the invention preferably has a dominant wavelength of from 5 nm to 254 nm. The method is particularly useful for removing selected portions of a hydrophobic coating on a glass substrate for use as an automotive glazing.
Abstract:
The invention relates to a method and to a device for characterizing and especially for labeling the surfaces of optical glasses (6) by means of UV light which is especially generated by an excimer laser (1). The inventive method and the corresponding device are characterized by a combination of the following features: focusing the light beam by means of an individual optical element (5), displacing the surfaces to be characterized and the point of focus of the light beam in a direction of the tangential plane in the vertex of the surface relative one another, and additionally displacing the surface to be characterized in a direction of the normal in the vertex in such a manner that the point of focus lies on the surface.
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/cm /pulse and a high purity fused silica lithography glass having a concentration of molecular hydrogen of between about 0.02 x 1018 molecules/cm3 and about 0.18 x 1018 molecules/cm 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,用于产生波长短于约300nm的波长小于10mJ / cm 2 /脉冲的紫外光刻辐射的脉冲紫外线辐射源,以及浓度高于10mJ / cm 2的高纯度熔融石英光刻玻璃 提供约0.02×10 18分子/ cm 3和约0.18×10 18分子/ cm 3之间的分子氢。 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; 并且将减小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。
Abstract:
A soda-lime-silica type glass having a property of absorbing ultraviolet rays and also being colorless and transparent which has been prepared by irradiating a cerium containing soda-lime-silica glass with a light having a wave length in far-ultraviolet to near-ultraviolet region and is reduced in the transmittance of lights having a wave length in the range of 300 to 400 nm.
Abstract:
A method of manufacturing germanium doped glasses, the refractive index of which can be changed preferably by exposure to UV-light by depositing a gas mixture. According to the invention, compounds containing N and H, such as NH3, which may be incorporated into the glass, are added to the gas mixture to be deposited. The invention further relates to the use of the method for the manufacture of an optical transducer, utilizing the fact that the filter frequency or frequencies is/are changed in response to the strain of the glass material.
Abstract:
A method and apparatus for exposing a substrate of relatively large surface area to radiation according to a predetermined pattern recorded on a mask, particularly useful in applying a painted border to an automobile windshield, includes the steps of progressively recording the predetermined pattern on a mask in the form of a continuous strip, and moving the radiation source to progressively scan the surface of the substrate with radiation, while at the same time moving the continuous strip mask relative to the radiation source, such that portions of the pattern on the continuous strip mask progressively become aligned with their corresponding portions of the substrate as the substrate is progressively scanned by the radiation source.