公开(公告)号：CA2143944A1

公开(公告)日：1994-03-17

申请号：CA2143944

申请日：1993-09-09

Applicant: BELL COMMUNICATIONS RES

Inventor： POGUNTKE KAI RALPH ,  SOOLE JULIAN BERNARD DONALD

IPC: H01S3/10 ,  G01J3/20 ,  G02B6/12 ,  H01S3/08 ,  H01S3/101 ,  H01S5/00 ,  H01S5/026 ,  H01S5/14 ,  H01S5/40

Abstract: An integrated, multi-wavelength laser having formed on a substrate (12) a plurality of active, individually selectable waveguides (14), a passive output waveguide (16), and a diffraction grating (18) formed in a Rowland-circle spectrometer geometry. The frequency of the lasing light is determined by-the geometrical relationship of the selected active waveguide, the diffraction grating, and the output waveguide. The active waveguides are positioned such that lasing light cannot diffract between two active waveguides. Little crosstalk occurs because no carrier depletion occurs in the output waveguide.

公开(公告)号：FI90592B

公开(公告)日：1993-11-15

申请号：FI890758

申请日：1989-02-16

Applicant: DAILAB INC OY

Inventor： RAESAENEN JARKKO

IPC: G01J3/18 ,  G01J3/20 ,  G01J3/36 ,  G01J3/427 ,  G01N21/35 ,  G01N33/04

Abstract: An IR-spectrometric analysing procedure, the measuring absorbance and reference absorbance being detected simultaneously from an IR light beam conducted to pass through the sample and diffracted to a spectrum. An IR spectrometer comprising a light source (1), a sample cuvette (5), a diffraction member (6), detectors (7) and a calculating means (9) for determining the content values of the sample corresponding to the measuring absorbance, the detectors (7) having been arranged to detect the measuring absorbance and the reference absorbance simultaneously from the beam that has passed through the sample and been diffracted to a spectrum.

公开(公告)号：CA2095261A1

公开(公告)日：1993-11-09

申请号：CA2095261

申请日：1993-04-30

Applicant: BERG BERNARD J ,  BOES THOMAS J ,  CARGILL MARK A ,  ROOD PATRICK S

Inventor： BERG BERNARD J ,  BOES THOMAS J ,  CARGILL MARK A ,  ROOD PATRICK S

IPC: G01J3/00 ,  G01J3/02 ,  G01J3/50 ,  G01N21/47 ,  G01N21/55 ,  G01J3/20

Abstract: PORTABLE SPECTROPHOTOMETER A portable spectrophotometer includes a small-diameter optical sphere (101) as well as optical detectors (131, 136) and signal processing and display circuitry (140, 142) which allows the instrument to be taken to an object to be measured and which provides a readout of color values at the portable instrument. The instrument is capable of providing specular-included and specular-excluded color readings simultaneously. The interior of the integrating sphere is coated with a highly reflective, colorabsorbing material, and light from an incandescent lamp (103) is diffused within the sphere prior to reaching the object to be measured. The sphere is provided with a first aperture (120) which receives spectrally-included light and which is positioned to absorb a spectral component of the diffused source light. A second aperture (125) positioned at a corresponding angular position with respect to the object measures specular-excluded light, excluding the specular component absorbed by the first aperture. By appropriately combining the specular-included and specular-excluded light at one wavelength, a value for the specular component is derived.

公开(公告)号：FR2651575A1

公开(公告)日：1991-03-08

申请号：FR8911607

申请日：1989-09-05

Applicant: INSTRUMENTS SA

Inventor： JEAN-CLAUDE GAUTHERIN ,  HENRI ZEGRE

IPC: G01J3/02 ,  G01J3/20 ,  G01N21/68

Abstract: The subject of the invention is a spectroscopic analysis device comprising a light source, a light analyzer comprising an entrance slit, a diffraction grating and at least one exit slit which are disposed along a Rowland circle, and an optical transmission system. According to the invention, the entrance slit (3) is mounted so as to be displaceable along the Rowland circle (1), on either side of a central position, the optical transmission system comprises a first, fixed part (I) associated with the light source (5; 8) and a second, movable part (II) associated with the entrance slit (3) and mounted so as to be displaceable parallel to itself in a direction (a1, a2; b1, b2; c1, c2) parallel to the tangent (T) to the Rowland circle (1) at the central position of the entrance slit (3), and the device comprises means for controlling the displacement, in synchronism, of the entrance slit (3) along the Rowland circle (1) and of the movable part (II), parallel to the tangent (T), with maintenance of the direction of the optical axis of the assembly.

公开(公告)号：DE3833602A1

公开(公告)日：1990-02-15

申请号：DE3833602

申请日：1988-10-03

Applicant: KRUPP GMBH

Inventor： NICK KLAUS-PETER DR DIPL PHYS ,  CARLHOFF CHRISTOPH DR DIPL PHY ,  LORENZEN CLAUS-JUERGEN DR DIPL

IPC: G01J1/44 ,  G01J3/04 ,  G01J3/12 ,  G01J3/20 ,  G01J3/28 ,  G01J3/36

Abstract: A description is given of a polychromator in Paschen-Runge arrangement, in which polychromator the intensity measurement is made with a line of photodiodes. The spectral intensity distribution of at least two spectral ranges on the Rowland circle is transferred by image conductors to the line of photodiodes and measured there.

公开(公告)号：DE3519764A1

公开(公告)日：1986-12-04

申请号：DE3519764

申请日：1985-06-01

Applicant: GRUEN OPTIK WETZLAR GMBH

Inventor： OBERHEIM WOLFGANG DR

IPC: G01J3/02 ,  G01J3/20 ,  G01J3/28 ,  G01J3/447 ,  G01N21/31 ,  G01J3/12 ,  G01J3/42

Abstract: In a device for decomposing optical radiation, which is provided with a light entry opening, means for projecting the entry opening into a light exit plane and interposed dispersive components, a polarisation prism with a divided field of view is placed directly downstream of the light entry opening. As a result, two mutually shifted identical spectra, to which different polarisation states of a radiation to be analysed are assigned are generated in the light exit plane. The device can be used advantageously in a Zeeman atomic absorption spectrometer.

公开(公告)号：HU187188B

公开(公告)日：1985-11-28

申请号：HU379182

申请日：1982-11-25

Applicant: KOEZPONTI ELELMISZERIPARI

Inventor： NADAI BELA ,  CZABAFFY ANDRAS ,  HORVATH LORAND ,  KAFFKA KAROLY

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/10 ,  G01J3/20 ,  G01N21/25 ,  G01J3/18

公开(公告)号：DE2905361C2

公开(公告)日：1983-09-15

申请号：DE2905361

申请日：1979-02-13

Applicant: OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES, O.N.E.R.A., 92320 CHATILLON-SOUS-BAGNEUX, HAUTS-DE-SEINE, FR

Inventor： BERNARD, CLAUDE ROBERT, LONGJUMEAU, FR ,  DAIGNE, BERNARD, CHATILLON, FR ,  GIRARD, FRANCOIS, PARIS, FR

IPC: G01J3/18 ,  G01J3/20 ,  G01J3/36 ,  G01J3/28

Abstract: A spectrograph usable more particularly in the far ultraviolet range. It comprises along the Rowland circle measuring blocks including photo-detectors. Said measuring blocks are movably mounted along a guiding rail materializing the Rowland circle. Motion means are provided for the displacement of the various measuring blocks along the guiding rail. Transmission means between the motion means and a measuring block constantly direct the latter towards the diffraction grating.

公开(公告)号：DE3005352A1

公开(公告)日：1981-08-20

申请号：DE3005352

申请日：1980-02-13

Applicant: MAASSEN JUERGEN ING GRAD

Inventor： MAASSEN JUERGEN ING GRAD

IPC: G01J3/12 ,  G01J3/20 ,  G01J3/28 ,  G01N21/71

Abstract: The optical arrangement is for the generation of successive measurement beams of different wavelength from the beam from a polychromatic source (1) is applicable to testing absorption and emission. A large number of wavelengths can be rapidly provided within a given spectral range. This is for example the visible and ultraviolet or the rear infrared range, and the entire range can be repeated five times per second. A masking device (5) can be placed at the light input or output of a spectral separator (3). If the mask is at the input point only one gap (6a-6e) is illuminated at any time and only one monochromatic measurement beam is produced. If the mask is at the output point different monochromatic beams pass to the gaps and are selected by a successive gap opening and closing mechanism.

公开(公告)号：FR2305717B1

公开(公告)日：1978-10-13

申请号：FR7608474

申请日：1976-03-24

Applicant: KLOECKNER WERKE AG

IPC: G01J3/18 ,  G01N33/20 ,  G01J3/20 ,  G01J3/38 ,  G01N21/22

Abstract: An arrangement of the Rowland character includes a support and a concave grating on the support for producing the spectrum characteristic of a sample being investigated. The support has a series of slits thereon which are positioned on the Rowland circle and are adjusted to the spectral lines of samples to be investigated. An element on the support is provided with a primary slit for directing the radiation derived from a sample being investigated onto the concave grating. The primary slit is positioned on the Rowland circle and the element provided with the primary slit is mounted on the support for movement along the arc of the Rowland circle. The element is mounted in such a manner as to be arrestable in a plurality of positions. The element is favorably in the form of a plate. A preferred embodiment contemplates the provision of a pair of grooves in the support, which latter may be in the form of a housing, with the grooves following the curvature of the Rowland circle and the element being guided in the grooves. The edges of the element located in the grooves may be provided with openings in which there are accommodated spherical members as well as biasing elements for urging the spherical members into contact with the grooves.