公开(公告)号：US3812359A

公开(公告)日：1974-05-21

申请号：US28349472

申请日：1972-08-24

Applicant: MC DONNELL DOUGLAS CORP

Inventor： MEIER R ,  DAY R ,  THOMPSON C

IPC: G01J1/00 ,  G01J5/00 ,  G01T1/16

CPC classification number: G01J1/00 ,  G01J5/0003

Abstract: Advanced sensor evaluation and test apparatus comprises a vacuum chamber with an inner cryoshroud, housing an on-axis optical parabolic collimator, a radiant energy source assembly having an output aperture located in the focal plane of the collimator, a calibration monitor consisting of a Cassegrainian type radiometer that occupies one portion of the collimated radiant energy beam and which forms an image of the source on a bolometer, and a pair of scanning mirrors directing energy from another portion of the collimated beam into the entrance aperture of the optical sensor under test. In addition, a background radiant energy generator can direct radiant energy simulating elevated radiation background to the sensor under test which, in turn, forms an enlarged image of the background source in its own detector plane. One version of the source assembly includes at least one blackbody radiation source of variable aperture and temperature with a chopper operating to provide modulated radiation which is projected into an integrating sphere coupled with a source projector. An adjustable dual reflector with one specularly and one diffusely reflecting surface is mounted inside the integrating sphere and can be rotated to predetermined orientations to function in either a specularly reflecting mode or diffusely reflecting mode. In a third mode of operation, the mirror is rotated into an inactive orientation in which it does not intercept the beam entering the integrating sphere. This is the integrating sphere mode of operation. Another version of the source assembly includes at least one blackbody radiation source providing radiation to an integrating sphere coupled with a radiation guide (pipe). The radiation guide can be either a single or dual guide (pipe) and is cooperatively structured to operate with selected transmission patterns (transparent portions) on a movable disc sector positioned at the end of the guide.

公开(公告)号：US3775620A

公开(公告)日：1973-11-27

申请号：US3775620D

申请日：1972-08-24

Applicant: MC DONNELL DOUGLAS CORP

Inventor： MEIER R

IPC: G01J1/08 ,  G01T1/16

CPC classification number: G01J1/08 ,  G01J1/0414 ,  G01J1/0455 ,  G01J5/522

Abstract: Advanced sensor evaluation and test apparatus comprises a vacuum chamber with an inner cryoshroud, housing an on-axis optical parabolic collimator, a radiant energy source assembly having an output aperture located in the focal plane of the collimator, a calibration monitor consisting of a Cassegrainian type radiometer that occupies one portion of the collimated radiant energy beam and which forms an image of the source on a bolometer, and a pair of scanning mirrors directing energy from another portion of the collimated beam into the entrance aperture of the optical sensor under test. In addition, a background radiant energy generator can direct radiant energy simulating elevated radiation background to the sensor under test which, in turn, forms an enlarged image of the background source in its own detector plane. One version of the source assembly includes at least one blackbody radiation source of variable aperture and temperature with a chopper operating to provide modulated radiation which is projected into an integrating sphere coupled with a source projector. An adjustable dual reflector with one specularly and one diffusely reflecting surface is mounted inside the integrating sphere and can be rotated to predetermined orientations to function in either a specularly reflecting mode or diffusely reflecting mode. In a third mode of operation, the mirror is rotated into an inactive orientation in which it does not intercept the beam entering the integrating sphere. This is the integrating sphere mode of operation. Another version of the source assembly includes at least one blackbody radiation source providing radiation to an integrating sphere coupled with a radiation guide (pipe). The radiation guide can be either a single or dual guide (pipe) and is cooperatively structured to operate with selected transmission patterns (transparent portions) on a movable disc sector positioned at the end of the guide.

Abstract translation: 高级传感器评估和测试装置包括具有内部冷冻导管的真空室，容纳轴上光学抛物线准直仪，辐射能源组件，其具有位于准直仪焦点平面中的输出孔;由Cassegrainian型 辐射计占据准直辐射能量束的一部分并且在测辐射热计上形成光源的图像;以及一对扫描镜，其将来自准直光束的另一部分的能量引导到被测光学传感器的入射孔。 此外，背景辐射能发生器可以将辐射能量模拟到被测传感器的辐射能量，这又反过来在其自身检测器平面中形成背景光源的放大图像。 源组件的一个版本包括具有可变孔径和温度的至少一个黑体辐射源，其中斩波器操作以提供调制的辐射，其被投影到与源投影仪耦合的积分球中。 具有一个镜面和一个漫反射表面的可调双反射器安装在积分球内部，并且可以旋转到预定取向以在镜面反射模式或漫反射模式中起作用。 在第三种操作模式中，反射镜被转动成不活动的方向，其中它不会拦截进入积分球的光束。 这是集成球的操作模式。 源组件的另一版本包括至少一个黑体辐射源，其向与辐射导管（管）耦合的积分球提供辐射。 辐射引导件可以是单引导件或双引导件（管），并且协同地构造成在位于引导件的端部的可移动的盘扇区上与选定的传输图案（透明部分）一起操作。