公开(公告)号：US3523734A

公开(公告)日：1970-08-11

申请号：US3523734D

申请日：1967-12-18

Applicant: FISHER SCIENTIFIC CO

Inventor： BREHM RICHARD KEITH ,  ILOWSKI JOSEPH STANISLAW ,  JARRELL RICHARD FISKE

IPC: G01J3/18 ,  G01J3/40

CPC classification number: G01J3/18

公开(公告)号：US3567322A

公开(公告)日：1971-03-02

申请号：US3567322D

申请日：1967-10-27

Applicant: FISHER SCIENTIFIC CO

Inventor： BREHM RICHARD KEITH ,  ALLEMAND CHARLY DANY

IPC: G01J3/18 ,  G01J3/06

CPC classification number: G01J3/18

Abstract: AN F/1 SPECTROMETER HAS ENTRANCE AND EXIT SLITS, EACH TEN MILLIMETERS HIGH AND FIFTY MICRONS WIDE, WHICH ARE PARALLEL TO ONE ANOTHER AND SPACED THREE MILLIMETERS APART. A PARABOLIC COLLIMATING MIRROR OF THIRTY CENTIMETERS FOCAL LENGTH REFLECTS LIGHT FROM THE ENTRANCE SLIT ONTO A DISPENSING MOSAIC OF NINE GRATINGS EACH RUILED WITH 1200 GROOVES PER MILLIMETER. THE GRATINGS ARE MOUNTED ON THREE PARALLEL AXES AND A DRIVE LINKAGE ROTATES ALL THE GRATINGS SIMULTANEOUSLY THROUGH EQUAL ANGLES. THE MIDDLE GRATING HAS AN APERTURE THROUGH WHICH LIGHT PASSES BETWEEN THE ENTRANCE AND EXIT SLITS AND THE COLLIMATING MIRROR. BEHIND THE EXIT SLIT IS MOUNTED AN ELLIPTICAL REFLECTOR THAT HAS FOCAL POINTS SPACED FIFTY EIGHT MILLIMETERS APART ALONG AN AXIS AT AN ANGLE OF 34* 40'' TO THE PLANE OF THE ENTRANCE-EXIT SLIT OPTICS FOR CONCENTRATING LIGHT PASSING THROUGH THE EXIT SLIT ON A PHOTOMULTIPLIER.