-
公开(公告)号:US5445767A
公开(公告)日:1995-08-29
申请号:US273616
申请日:1994-07-12
申请人: Christoper S. Winter , Stephen N. Oliver , James D. Rush , Allan E. Underhill , Callum A. S. Hill
发明人: Christoper S. Winter , Stephen N. Oliver , James D. Rush , Allan E. Underhill , Callum A. S. Hill
CPC分类号: C08G79/00 , G02F1/3517 , G02F1/3619 , G02F1/3132 , G02F1/3515
摘要: ##STR1## The specification identifies dithiolenes which give good performance as the critical region of an optical switch. The dithiolenes have the formula shown in FIG. 1 wherein: (A) the R groups, any two of which may be the same or different, are selected so as to tune the absorption bands of the molecule for use at the operational wavelength and/or to act as bridges to join molecules together: (B) the X groups, any two of which may be the same or different, are selected from S and Se: (C) M is selected from Ni, Pt, Pd and Cu: (D) C=-1 or 0: and (E) (i) when C=-1, Y is a cation to render the molecule electrically neutral: preferably Y is selected from ammonium, substituted ammonium, Na
+ , Li
+ and K
+ , (ii) when C=0, Y is absent (since the molecule is neutral there is no change to balance). The dithiolene may be diluted with an organic polymer selected from polyacrylates, polymethacrylates, such as polymethymethacrylate, polycarbonates, polyisobutylene, polyethylene terephthalate, polystyrene and polysiloxane.摘要翻译: 该标准确定了作为光开关的关键区域具有良好性能的二硫戊烯。 二硫戊烯具有图1所示的配方。 1其中:(A)R基团,其任何两个可以相同或不同,以调节分子的吸收带在工作波长下使用和/或作为桥连接在一起的分子 :(B)选自S和Se中的X基团,其中两个可以相同或不同,(C)M选自Ni,Pt,Pd和Cu:(D)C = -1或0 和(E)(i)当C = -1时,Y是使分子电中性的阳离子:优选Y选自铵,取代的铵,Na +,Li +和K +,(ii)当C = 0时,Y 不存在(因为分子是中性的,平衡没有变化)。 可以用选自聚丙烯酸酯,聚甲基丙烯酸酯,聚甲基丙烯酸甲酯,聚碳酸酯,聚异丁烯,聚对苯二甲酸乙二醇酯,聚苯乙烯和聚硅氧烷的有机聚合物稀释二硫醇。
-
公开(公告)号:US4566754A
公开(公告)日:1986-01-28
申请号:US361093
申请日:1982-03-23
IPC分类号: C03B37/023 , C03B37/027 , C03C13/04 , G02B6/00 , C03B37/025
CPC分类号: G02B6/02276 , C03B37/023 , C03B37/027 , C03C13/045 , C03B2201/02 , C03B2201/31 , C03B2203/24 , C03B2203/36 , Y10S65/16
摘要: An optical fibre capable of monomode transmission in, and having a wavelength of zero dispersion in, the 1.55 .mu.m window and having a core comprising silica and germanium dioxide and a cladding comprising silica is drawn from an appropriate preform at a temperature in the range from 1900.degree. C. to 2000.degree. C. Fibres thus produced have low loss compared with fibres drawn at higher temperature.
摘要翻译: 在1.55μm窗口内能够单模传输并具有零色散的光纤并且具有包括二氧化硅和二氧化锗的核心以及包含二氧化硅的包层的光纤在适当的预成型件中从在 1900℃至2000℃。与在较高温度下拉伸的纤维相比,这样生产的纤维具有低损失。
-
公开(公告)号:US5394335A
公开(公告)日:1995-02-28
申请号:US40593
申请日:1993-03-31
申请人: James D. Rush
发明人: James D. Rush
IPC分类号: B21D28/36 , B21D28/12 , B21D37/04 , G05B19/414 , G06F15/46
CPC分类号: G05B19/4147 , B21D28/12 , G05B2219/34331 , G05B2219/45137 , G05B2219/50168
摘要: A retrofit auto-indexing system for a turret punch press is described in which a predetermined location is provided to which both the upper and lower turrets of a non-indexing turret punch press are rotated. Upper and lower punching tools are mounted respectively in the upper and lower turrets in such a manner so as to be rotated simultaneously, using a single servomotor, to a desired angle. The auto-indexing system is controlled using a microcomputer which is connected to receive the numerical control programmed data, determine whether the code it is receiving relates to the auto-indexing function and, when it does, institute the instructed auto-indexing function. Otherwise, the microcomputer passes the numerical control programmed data directly to a minicomputer which operates the turret punch press in a known manner.
摘要翻译: 描述了一种用于转塔冲压机的改进自动分度系统,其中提供了一个预定位置,非分度转塔冲床的上,下转塔都旋转到该位置。 上下冲孔工具以这样的方式分别安装在上下塔架中,以便使用单个伺服马达同时旋转到所需的角度。 自动分度系统使用连接接收数控编程数据的微型计算机进行控制,确定其正在接收的代码是否与自动索引功能相关,并且在执行时指定自动索引功能。 否则,微型计算机将数控编程数据直接传递到以已知方式操作转塔冲床的小型计算机。
-
-