公开(公告)号：US3585121A

公开(公告)日：1971-06-15

申请号：US3585121D

申请日：1968-11-14

Applicant: NAT RES DEV

Inventor： FRANKS ALBERT ,  LINDSEY KEVIN

IPC: G02B5/18 ,  G21K1/06 ,  C23C15/00

CPC classification number: G21K1/06 ,  G02B5/1838 ,  G02B5/1857 ,  G21K2201/067

Abstract: A METHOD OF MAKING DIFFRACTION GRATINGS, PARTICULARLY X-RAY DIFFRACTION GRATINGS, IN WHICH THOSE PARTS OF THE GRATING THAT FORM THE BOTTOMS OF DIFFRACTING GROOVES BELOW THE GENERAL OPTICALLY SMOOTH SURFACE OF THE GRATING ARE SUBJECTED TO AN ELECTRICAL ETCHING PROCESS.

公开(公告)号：US3628015A

公开(公告)日：1971-12-14

申请号：US3628015D

申请日：1968-11-26

Applicant: NAT RES DEV

Inventor： FRANKS ALBERT

IPC: G01N23/207 ,  G01N23/22

CPC classification number: G01N23/2076

Abstract: In a spectrometer incorporating a radiation detector which is movable so as to follow the focal curve of a dispersive element such as a curved grating or crystal, the movement of the detector is brought about by appropriately coordinating the operation of two mechanisms which respectively drive the detector radially and angularly relative to the dispersive element.

公开(公告)号：US3507564A

公开(公告)日：1970-04-21

申请号：US3507564D

申请日：1965-11-15

Applicant: NAT RES DEV

Inventor： FRANKS ALBERT

IPC: G02B5/18

CPC classification number: G02B5/1857