公开(公告)号：AU6083598A

公开(公告)日：1998-09-29

申请号：AU6083598

申请日：1998-03-06

Applicant: AGILENT TECH AUSTRALIA M PTY LTD

Inventor： ALLEN BRIAN LAWRENCE ,  HAMMER MICHAEL RON

IPC: G01J3/02 ,  G01J3/08 ,  G01J3/42 ,  G01N21/31

公开(公告)号：FR2686691B1

公开(公告)日：1997-07-25

申请号：FR9211014

申请日：1992-09-10

Applicant: BUSSOTTI JEAN FRANCK

Inventor： BUSSOTTI JEAN FRANCK

IPC: G01J1/04 ,  G01J3/02 ,  G01J3/08 ,  G01J1/16

公开(公告)号：GB9704967D0

公开(公告)日：1997-04-30

申请号：GB9704967

申请日：1997-03-11

Applicant: HOWARD FOUNDATION

IPC: A61B3/02 ,  A61B3/06 ,  G01J3/08

Abstract: A flicker photometer comprises generating means (1, 8, 4) for generating two beams of light of different colours. Both beams are directed to a viewing means (190), and a subject can vary the intensity of light from one beam relative to the other. The colour of the light seen by the subject is caused to alternate. The performance of the photometer is improved by screens which scatter light before it reaches the subject. A first of the screens (186, 188) reflects light from one beam, whilst a second screen (b) is translucent, and thus transmits light from the other. If light of wavelengths to which the eye is less sensitive is passed through the second screen, whilst light of a wavelength to which the eye is more sensitive passes through the first screen, the screens help to make it practicable for the generating means to use a single lamp (1) to produce the light for both beams.

公开(公告)号：FI97082B

公开(公告)日：1996-06-28

申请号：FI943305

申请日：1994-07-11

Applicant: INSTRUMENTARIUM OY

Inventor： KARLSSON KAI ,  MERILAEINEN TIMO ,  WECKSTROEM KURT ,  POIKOLAINEN SEPPO

IPC: G01J3/10 ,  G01J3/08 ,  G01J1/08

Abstract: The application relates to an infrared radiation source for a gas analyzer and a method for generating infrared radiation. The infrared radiation source comprises a body (6), thermal insulation material (5) adapted inside the body (6), a radiant element (1) fitted inside the insulation material (5), elements (2, 3) for feeding electric energy to said radiant element (1), and a channel (7) formed in said body (6) and said thermal insulation material (5) in order to pass the radiation generated by said radiant element (1) to the gas under measurement. According to the description, at least the thermal insulation material (5) adapted in close proximity to the radiant element (1) has a low thermal conductivity and the emissivity of the radiant surface (11) adapted in close proximity to the radiant element (1) is greater than 0.5 at the operating temperature of the source.

公开(公告)号：DE69103714D1

公开(公告)日：1994-10-06

申请号：DE69103714

申请日：1991-09-27

Applicant: EASTMAN KODAK CO

Inventor： LOWNE ALAN JOHN ,  SANDIFER JAMES ROY ,  UERZ DAVID SCOTT ,  SWITALSKI STEVEN CASIMIR ,  LIU HUSE-YANG

IPC: G01J3/42 ,  G01J1/44 ,  G01J3/08 ,  G01J3/28 ,  G01J3/51 ,  G01N21/31 ,  G01N21/35 ,  G02B26/04

Abstract: In known spectrophometers, a single light source is used to illuminate both a sample and a reference. A single detector is used to detect the light at both the sample and the reference. A chopper wheel having aperture portions is used to allow the light to pass through a selected filter in the apertures. However, in such devices, the beams from the sample and the reference arrive at the detector at the same time and movable shutters need to be employed. Described herein is a spectrophotometer (10) comprising a single light source (12), a single detector (14), optics (30, 36, 340, 42, 44, 46, 48, 50, 52, 54, 56, 58, 90, 92, 100) for dually and alternatively reading a sample (94) and a reference (96), and which employs only one moving part. That moving part is a chopper (42) containing multiple pass-through apertures (60a, 60b, 60c, 60d, 60e, 60f), each filled with a unique bandpass filter to select wavelengths to specifically illuminate the sample (94) or reference (96). To inform the spectrophotometer (10) whether and when it is reading the sample (94) or the reference (96), energy relay means (70a, 70b, 70c, 70d, 70e, 70f, 70g, 70h, 70i, 70j, 70k, 70l) are provided between an energy emitter (80) and an energy detector (82) in an amount of at least twice the number of the pass-through apertures (60a, 60b, 60c, 60d, 60e, 60f).

公开(公告)号：AU609279B2

公开(公告)日：1991-04-26

申请号：AU3270389

申请日：1989-04-12

Applicant: MILTON ROY CO

Inventor： BURNS RICHARD ,  DEFENDORF JAMES ,  KING EDWARD ,  MCCARTHY CORNELIUS

IPC: G01J3/18 ,  G01J3/04 ,  G01J3/10 ,  G01J3/12 ,  G01J3/28 ,  G01J3/42 ,  G01J3/44 ,  G01J3/443 ,  G01N21/31 ,  G01J3/08

Abstract: An optical system for a multidetector array spectrophotometer includes multiple light sources (10,12) for emitting light of selected wavelength ranges and means for selectively transmitting the selected wavelength ranges of light to respective slits (40,42) of a multi-slit spectrograph for multiple wavelength range detection. The spectrograph has two or more slits (40,42) which direct the selected wavelength ranges of the light spectra to fall upon a dispersive and focusing system which collects light from each slit, disperses the light by wavelength and refocuses the light at the positions of a single set of detectors (46).

公开(公告)号：DD262084A1

公开(公告)日：1988-11-16

申请号：DD30472587

申请日：1987-07-08

Applicant: WEINERT E MESSGERAETEWERK

Inventor： TZSCHASCHEL CLAUS-PETER ,  DOHMEYER BURKHARD

IPC: B06B1/02 ,  G05D19/02 ,  G01J3/08

公开(公告)号：DD257876A1

公开(公告)日：1988-06-29

申请号：DD30029387

申请日：1987-03-02

Applicant: ZEISS JENA VEB CARL

Inventor： BOEWE DIETER ,  BRUECKNER KARL ,  HEINRICH WINFRIED ,  PAWLIK HORST

IPC: G01J3/08

公开(公告)号：IN160716B

公开(公告)日：1987-08-01

申请号：IN436CA1984

申请日：1984-06-22

Applicant: RITZL HERMANN

Inventor： RITZL HERMANN DR ING

IPC: G01J1/42 ,  G01J3/28 ,  G01J3/443 ,  G01N21/67 ,  G01J3/00 ,  G01J3/08

Abstract: A spectrometer which comprises a light source for exciting a sample, and a monochromator whose intensity values, as detected at the output gap, are subjected to further processing in a computer, in conjunction with the associated wavelength values, for the purposes of achieving a large measuring range and a high degree of measuring accuracy is provided with two secondary electron multipliers and a beam splitter which supplies the second secondary electron multiplier with only a small fraction of the radiation issuing from the monochromator. An electronic switch transmits to the computer, by way of an A-D converter, the output of that secondary electron multiplier whose output signal is within the analysable range of levels. The computer causes the monochromator to pass through the measuring range a plurality of times, and individually stores the measurement values which are then processed to form mean values.

公开(公告)号：DE3602139A1

公开(公告)日：1987-07-30

申请号：DE3602139

申请日：1986-01-24

Applicant: GRUEN OPTIK WETZLAR GMBH

Inventor： HADEISHI TETSUO PROF DR

IPC: G01J3/08 ,  G01J3/10 ,  G01N21/31 ,  G02B26/08

Abstract: A device for the alternating deflection of beams, emerging from a plurality of juxtaposed light sources (10, 20), in a common measurement beam path (11) is distinguished in that the light sources are arranged in a plane such that the beams (13, 14) produced by them are directed onto the same surface area of a 100% reflecting mirror (15) which is located at right angles to the plane of the light sources and is mounted on a torsion element (16) whose longitudinal axis is likewise located at right angles on the plane of the light sources and which can be controllably twisted with the aid of a drive.