公开(公告)号：US3554647A

公开(公告)日：1971-01-12

申请号：US3554647D

申请日：1968-12-27

Applicant: NASA

Inventor： GOODWIN RALPH A ,  HALL EDGAR D

IPC: G01J3/04 ,  G01J3/40 ,  G01J3/42

CPC classification number: G01J3/02 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0272 ,  G01J3/0291

Abstract: IN A SPECTROMETER FOR USE IN ANALYZING A PORTION OF LIGHT EMITTED FROM A RELATIVELY LARGE LIGHT SOURCE COMPRISING A CYLINDRICAL, HIGHLY POLISHED METALLIC MEMBER THE SIZE OF A COMMON NEEDLE LOCATED AT THE FOCAL PLANE OF AN ACHROMATIC COLLIMATOR OF THE SPECTROMETER, THE CYLINDRICAL MEMBER BEING ADJUSTABLY SITUATED IN THE PATH OF A LIGHT SOURCE OF RELATIVELY LARGE AREA, SAID CYLINDRICAL MEMBER BEING ILLUMINATED BY A PORTIION OF SAID LIGHT SOURCE, SAID CYLINDRICAL MEMBER REFLECTING A PORTION OF SAID LIGHT SOURCE. IN A NARROW BEAM CONFIGURATION SUITABLE FOR COLLIMATION.