公开(公告)号：US3701589A

公开(公告)日：1972-10-31

申请号：US3701589D

申请日：1968-11-08

Applicant: HEATH CO

Inventor： HAINES JACK A

IPC: G01J3/04 ,  G02F1/30 ,  G01J3/12

CPC classification number: G01J3/04

Abstract: IN A SCANNING MONOCHROMATOR OF THE DIFFRACTION GRATING TYPE, AN IMPROVED SLIT MECHANISM IS PROVIDED ADJACENT THE MONOCHROMATOR ENTRANCE AND EXIST PORTS. EACH SLIT MECHANISM INCLUDES A PAIR OF CLOSELY SPACED PARALLEL SLIT EDGES AND, ADDITIONALLY, INCORPORATES A PARALLELOGRAM ARRANGEMENT. THE PARALLELOGRAM ARRANGEMENT PERMITS THE SLIT EDGES FORMING A SLIT TO BE MOVED RELATIVELY TOWARD AND AWAY FROM ONE ANOTHER TO VARY THE SLIT WIDTH, BUT THE EDGES ARE ALWAYS MAINTAINED IN VERY ACCURATE PARALLELISM. A UNIQUE DRIVE ARRANGEMENT CONNECTS THE INLET PORT SLIT MECHANISM AND THE OUTLET PORT SLIT MECHANISM SO THAT AN INCREASE OR DECREASE IN THE SLIT WIDTH OF ONE CAUSES A CORRESPONDING INCREASE OR DECREASE IN THE SLIT WIDTH OF THE OUTER. A FURTHER UNIQUE DRIVE ARRANGEMENT PERMITS THE DIFFRACTION GRATING TO BE ADJUSTED AT EITHER NORMAL SCANNING SPEED OR AT RAPID SPEED.