公开(公告)号：US20190041323A1

公开(公告)日：2019-02-07

申请号：US15670550

申请日：2017-08-07

Applicant: The Boeing Company

Inventor： Mark D. Rogers ,  Loyal Bruce Shawgo ,  Jeffery Thomas Murphy

IPC: G01N21/359 ,  G01N21/3563 ,  G01N21/47 ,  G01N21/85 ,  G01J3/50 ,  G01J3/51

CPC classification number: G01N21/359 ,  G01J3/0232 ,  G01J3/0254 ,  G01J3/08 ,  G01J3/28 ,  G01J3/42 ,  G01J3/506 ,  G01J3/513 ,  G01N21/3563 ,  G01N21/474 ,  G01N21/85

Abstract: Systems and methods are provided for measuring spectral hemispherical reflectance. One embodiment is a system that includes a laser that emits a beam of light, and an optical chopper disposed between the laser and a sample. The chopper blocks the beam while the chopper is at a first angle of rotation, redirects the beam along a reference path while the chopper is at a second angle of rotation, and permits the beam to follow a sample path through the chopper and strike the sample while the chopper is at a third angle of rotation. The system also includes a hollow sphere that defines a slot through which the sample path and reference path enter the sphere. The hollow sphere includes a spectral hemispherical reflectance detector, a mount that receives the sample at the sphere, and an actuator that rotates the sphere about an axis that intersects the sample.

公开(公告)号：US10371628B2

公开(公告)日：2019-08-06

申请号：US15670550

申请日：2017-08-07

Applicant: The Boeing Company

Inventor： Mark D. Rogers ,  Loyal Bruce Shawgo ,  Jeffery Thomas Murphy

IPC: G01J3/50 ,  G01J3/51 ,  G01N21/47 ,  G01N21/85 ,  G01N21/359 ,  G01N21/3563

Abstract: Systems and methods are provided for measuring spectral hemispherical reflectance. One embodiment is a system that includes a laser that emits a beam of light, and an optical chopper disposed between the laser and a sample. The chopper blocks the beam while the chopper is at a first angle of rotation, redirects the beam along a reference path while the chopper is at a second angle of rotation, and permits the beam to follow a sample path through the chopper and strike the sample while the chopper is at a third angle of rotation. The system also includes a hollow sphere that defines a slot through which the sample path and reference path enter the sphere. The hollow sphere includes a spectral hemispherical reflectance detector, a mount that receives the sample at the sphere, and an actuator that rotates the sphere about an axis that intersects the sample.