公开(公告)号：DE2747387C2

公开(公告)日：1983-12-08

申请号：DE2747387

申请日：1977-10-21

Applicant: HITACHI, LTD., TOKYO, JP

Inventor： MAEDA, YOSHIO ,  MATSUMOTO, KOICHI ,  KAMITAKE, SEIGO, KATSUTA, JP

IPC: G01J3/08 ,  G01J3/42 ,  G01N21/31

公开(公告)号：ES514125A0

公开(公告)日：1983-09-01

申请号：ES514125

申请日：1982-07-19

Applicant: AMERICAN HOSPITAL SUPPLY CORP

IPC: G01J3/08 ,  G01J3/10 ,  G01J3/42 ,  G01N21/25 ,  G01N21/27 ,  G01J3/00 ,  G01N35/00

Abstract: A multichannel spectrophotometer has a single radiant energy source formed into a multiplicity of radiant energy beams which are each simultaneously intercepted by segments of a rotary source filter wheel, the spectral radiant energy output selected by each filter segment being directed into a separate source radiant energy conduit and transmitted to a remote sample station where a cuvette containing a sample to be analyzed is located, the radiant energy outputs of each cuvette being directed into a separate detector radiant energy conduit where each conduit is intercepted by a filter segment of a second rotating detector filter wheel identical to the source filter wheel and rotated in aligned synchronism therewith, the spectral radiant energy outputs of each segment of the detector filter wheel being further directed into a separate radiant energy detector and signal processing electronics associated with that sample station or spectrophotometer channel from which the radiant energy signal being detected and analyzed has been received. Central control, timing and display electronics are shared by each channel and may be overall programmed and controlled by computer. In one application involving the measurement of fluorescence, the filters of the detector filter wheel will be different from the filters of the source filter wheel so as to excite the sample cuvette at one wavelength and to measure fluorescent response at another.

公开(公告)号：FR2415291B1

公开(公告)日：1982-12-17

申请号：FR7901250

申请日：1979-01-18

Applicant: HOFFMANN LA ROCHE

IPC: G01J3/42 ,  G01J3/08 ,  G01J3/10 ,  G01N21/25 ,  G01N21/00

公开(公告)号：DE2804972C2

公开(公告)日：1982-05-06

申请号：DE2804972

申请日：1978-02-06

Applicant: HORIBA LTD., KYOTO, JP

Inventor： KOJIMA, KENNOSUKE, OTU, JP ,  IMAKI, TAKAO ,  ISHIDA, KOZO, KYOTO, JP

IPC: G01J1/04 ,  G01J3/02 ,  G01J3/08 ,  G01J3/42 ,  G01N21/01 ,  G01N21/35 ,  G01N21/61 ,  G01N21/17 ,  G01J1/34

Abstract: An optical system for a spectroscopic analyzer. The system has a light source, a detector and a sample cell connected in a line, and in the sample cell or between the sample cell and one of the other elements is a light chopper device. The light chopper has a rotating element in the form of a disc-shaped member or members which periodically block light from the light source and pass light during the times it is not blocked. The rotating element is driven by a motor on the outside of the structure.

公开(公告)号：AU6454980A

公开(公告)日：1981-05-28

申请号：AU6454980

申请日：1979-11-19

Applicant: VARIAN TECHTRON PTY LTD

Inventor： LIMBEK B E

IPC: G01J3/10 ,  G01J3/28 ,  G01J3/42 ,  G01J3/08 ,  G01J3/34

公开(公告)号：GB1561669A

公开(公告)日：1980-02-27

申请号：GB4976676

申请日：1976-11-30

Applicant: POLITECHNIKA WROCLAWSKA

IPC: G01J1/16 ,  G01N21/53 ,  G01J3/08

公开(公告)号：AU3771378A

公开(公告)日：1980-01-10

申请号：AU3771378

申请日：1978-07-03

Applicant: PERKIN ELMER CORP

Inventor： BARNARD THOMAS W

IPC: G01J1/04 ,  G01J3/08 ,  G01N21/01 ,  G01N21/31 ,  G02B27/10

Abstract: An improved optical chopper, developed particularly for use in a double beam atomic absorption spectrophotometer, receives light beams from two separate sources and sequentially switches them into two separate paths and instantly thereafter the second light beam enters the first path, followed immediately by the first beam entering the second output path and then the second beam entering the second path; alternatively, the chopper is arranged so that the first light beam enters the first output path followed by the first light beam entering the second output path, and then the second light beam enters the first path and the second light enters the second path; also, during one segment of the choppers cycle, both beams are blocked from both output paths.

公开(公告)号：GB2013362A

公开(公告)日：1979-08-08

申请号：GB7901298

申请日：1979-01-12

Applicant: HOFFMANN LA ROCHE

IPC: G01J3/42 ,  G01J3/08 ,  G01J3/10 ,  G01N21/25 ,  G01J3/18

公开(公告)号：NL7900381A

公开(公告)日：1979-07-24

申请号：NL7900381

申请日：1979-01-17

Applicant: HOFFMANN LA ROCHE

IPC: G01J3/42 ,  G01J3/08 ,  G01J3/10 ,  G01N21/25 ,  G01J3/18

公开(公告)号：IT7948607D0

公开(公告)日：1979-04-04

申请号：IT4860779

申请日：1979-04-04

Applicant: PERKIN ELMER CORP

IPC: G01J1/04 ,  G01J3/08 ,  G01N21/01 ,  G01N21/31 ,  G02B

Abstract: An improved optical chopper, developed particularly for use in a double beam atomic absorption spectrophotometer, receives light beams from two separate sources and sequentially switches them into two separate paths and instantly thereafter the second light beam enters the first path, followed immediately by the first beam entering the second output path and then the second beam entering the second path; alternatively, the chopper is arranged so that the first light beam enters the first output path followed by the first light beam entering the second output path, and then the second light beam enters the first path and the second light enters the second path; also, during one segment of the choppers cycle, both beams are blocked from both output paths.