公开(公告)号：WO2018147926A1

公开(公告)日：2018-08-16

申请号：PCT/US2017/064938

申请日：2017-12-06

Applicant: RAYTHEON COMPANY

Inventor： COOK, Lacy G. ,  QUEZADA, Jose B. ,  NELSON, Neil R.

IPC: G02B23/06 ,  G02B17/00 ,  G02B17/06 ,  G02B7/18 ,  G02B5/00 ,  G02B27/14

Abstract: All-reflective coronagraph optical system for continuously imaging a wide field of view. The system can comprise a fore-optics assembly comprising a plurality of mirrors that reflect light rays, about a wide field of view centered around the Sun, to an aft-optics assembly that reflects the light rays to an image sensor. A fold mirror, having an aperture, is optically supported between the fore-optics assembly and the aft-optics assembly. The aperture defines an angular subtense sized larger than the angular subtense of the Sun, and facilitates passage of a direct solar image and a solar thermal load. A thermal control subsystem comprises a shroud radiatively coupled to each fore-optics mirror and the fold mirror. A cold radiator is thermally coupled to each shroud. Heaters adjacent fore optics mirrors and the fold mirror control temperature to provide a steady state optical system to minimize wavefront error.

公开(公告)号：WO2014197117A1

公开(公告)日：2014-12-11

申请号：PCT/US2014/033282

申请日：2014-04-08

Applicant: RAYTHEON COMPANY

Inventor： MOHAGEG, Makan ,  SABALA, Jeffrey L. ,  SOHN, Alexander S. ,  NELSON, Neil R.

IPC: H05B3/56

CPC classification number: H05B3/10 ,  H05B3/34 ,  H05B3/56 ,  H05B2214/04

Abstract: An apparatus includes a four-braid resistive heater (100, 200), which includes a conductive structure (104, 204) configured to transport electrical currents and to generate heat based on the electrical currents. The conductive structure has first, second, third, and fourth electrical conductors (106-112, 210-212). The first and second electrical conductors are looped around each other along a length of the conductive structure. The third and fourth electrical conductors are looped around each other along the length of the conductive structure. Loops formed with the first and second conductors are interleaved with loops formed with the third and fourth conductors along the length of the conductive structure. The first and third electrical conductors can be electrically coupled together, and the second and fourth electrical conductors can be electrically coupled together.

Abstract translation: 一种装置包括四编电阻加热器（100,200），其包括导电结构（104,204），导电结构（104,204）被配置为传输电流并且基于电流产生热量。 导电结构具有第一，第二，第三和第四电导体（106-112,210-212）。 第一和第二电导体沿着导电结构的长度彼此环绕。 第三和第四电导体沿着导电结构的长度彼此环绕。 与第一和第二导体形成的环与沿着导电结构的长度与第三和第四导体形成的环交替。 第一和第三电导体可以电耦合在一起，并且第二和第四电导体可以电耦合在一起。

公开(公告)号：WO2012082508A1

公开(公告)日：2012-06-21

申请号：PCT/US2011/063884

申请日：2011-12-08

Applicant: RAYTHEON COMPANY ,  WILKINSON, Steven R. ,  NELSON, Neil R.

Inventor： WILKINSON, Steven R. ,  NELSON, Neil R.

IPC: G04G7/00

CPC classification number: G04G7/00

Abstract: A system for synchronizing a first clock and a second clock includes a receiver associated with the first clock, configured to receive a remote optical pulse from the second clock. The remote optical pulse has a pulse repetition frequency and spectral characteristics that are known to the local clock. The system also includes a local optical pulse emitter configured to create a local optical pulse at the first clock, and optics configured to align the local optical pulse and the remote optical pulse. The system further includes an interferometer configured to create an interference pattern between the local optical pulse and the remote optical pulse. A controller is provided that is configured to calculate a time delay between the first clock and the second clock based on the interference pattern between the local optical pulse and the remote optical pulse.

Abstract translation: 用于同步第一时钟和第二时钟的系统包括与第一时钟相关联的接收器，被配置为从第二时钟接收远程光脉冲。 远程光脉冲具有本地时钟已知的脉冲重复频率和频谱特性。 该系统还包括被配置为在第一时钟产生本地光脉冲的局部光脉冲发射器，以及配置成对准本地光脉冲和远端光脉冲的光学元件。 该系统还包括被配置为在本地光脉冲和远程光脉冲之间产生干涉图案的干涉仪。 提供了一种控制器，其被配置为基于本地光脉冲和远程光脉冲之间的干涉图案来计算第一时钟和第二时钟之间的时间延迟。