公开(公告)号：US3853521A

公开(公告)日：1974-12-10

申请号：US45202074

申请日：1974-03-18

Applicant: INT STANDARD ELECTRIC CORP

Inventor： GREENWOOD J

IPC: C03B19/04 ,  C03B37/012 ,  C03C13/04 ,  G02B6/00

CPC classification number: C03C13/046 ,  C03B19/04 ,  C03B37/01268 ,  C03B37/01271 ,  C03B2201/50 ,  C03B2201/54 ,  C03C13/04

Abstract: A preform for later use in drawing optical fibres is made from an outer tube of cladding glass by spinning molten glass in a mold about a horizontal axis. As the mold is cooled, a lower specific gravity high refractive index core glass is inserted into the bore of the cladding glass tube. The mold is again centrifuged, heated to melt the two glasses and cooled to stabilize the glass interface and promote diffusion. The required relationship between specific gravities and refractive indices is obtained by using similar glass compositions. The core glass may contain calcium oxide and sodium oxide while the cladding glass includes barium oxide and potassium oxide.

Abstract translation: 用于随后用于拉制光纤的预成型件通过在模具中围绕水平轴线旋转熔融玻璃而由包层玻璃的外管制成。 当模具冷却时，将较低比重的高折射率芯玻璃插入包层玻璃管的孔中。 将模具再次离心，加热以熔化两个玻璃并冷却以稳定玻璃界面并促进扩散。 通过使用类似的玻璃组合物获得比重和折射率之间所需的关系。 核心玻璃可以含有氧化钙和氧化钠，而包层玻璃包括氧化钡和氧化钾。

公开(公告)号：US3854112A

公开(公告)日：1974-12-10

申请号：US42290773

申请日：1973-12-07

Applicant: INT STANDARD ELECTRIC CORP

Inventor： GREENWOOD J

IPC: G01L1/16 ,  G01B7/16 ,  G01L1/18 ,  G01L9/00 ,  H01C10/10 ,  H01L29/84 ,  H01L45/00 ,  H01C9/06

CPC classification number: G01L1/18 ,  G01L9/0001

Abstract: A piezoresistive pressure transducer utilizing the piezoresistive property of glass of high gauge fact. These glasses are selected from a group including vanadium phosphate and tungsten phosphate. The device may be fabricated in various forms and sizes including embodiments of very small size, through application of known glass working techniques such as drawing to reduce it to five fiber form.

Abstract translation: 利用高规格玻璃的压阻特性的压阻式压力传感器。 这些玻璃从包括磷酸钒和磷酸钨的组中选出。 该装置可以通过应用已知的玻璃加工技术例如拉伸将其减小到五种纤维形式，以各种形式和尺寸制造，包括非常小尺寸的实施例。