Abstract:
An interferometry system including: a first imaging system that directs a measurement beam at an object to produce a return measurement beam from the object, that directs the return measurement beam onto an image plane, and that delivers a reference beam to the image plane; and a beam combining element in the image plane, said beam combining element comprising a first layer containing an array of sagittal slits and a second layer containing an array of tangential slits, wherein each slit of the array of sagittal slits is aligned with a corresponding different slit of the array of tangential slits, wherein the beam combining element combines the return measurement beam with the reference beam to produce an array of interference beams.
Abstract:
Light dispersing device comprising a slit element having a slit for exposure to electromagnetic radiation, wherein the slit element is configured and disposed for turning the slit between at least two positions. The light dispersing device is used together with a streak camera, whereby in a first position the slit is adjusted to influence the temporal resolution of the streak camera and in a second postion the slit is adjusted to influence the spectral resolution of the streak camera.
Abstract:
A spectrograph with a first concave spectrographic diffraction grating is positioned to receive light from an input light source. The first concave spectrographic diffraction grating is configured to provide a diffracted light output dispersing the components of the input light source in a first dispersion direction with a first angular orientation with respect to the plane of the grating. The dispersion forms the input light into an intermediate spectrum. The intermediate spectrum is formed in a focal surface by the once diffracted light. A slit is substantially positioned on the focal surface. A second concave diffraction grating is positioned to receive once diffracted light from the slit and configured to provide a twice diffracted light output, the second concave diffraction grating dispersing the components of the input light source in a second diffraction direction with a second angular orientation with respect to the plane of the grating. The second dispersion angular orientation is different from the first dispersion angular orientation. The second dispersion forms the input light into an output spectrum.
Abstract:
Einstellbares Pinhole, insbesondere für den Beleuchtungs- und/ oder Detektionsstrahlengang eines Laser- Scanning- Mikroskopes, bestehend aus mindestens zwei planaren Grundbausteinen, die stegartige Gelenkstellen aufweisen, an denen mindestens eine in einer Richtung verschiebliche Schneidenkante angebracht ist, wobei der Grundbaustein vorteilhaft mindestens ein integriertes vorzugsweise optisches oder elekromagnetischens Positionierungselement enthält, an der Schneide oder mit dieser verbunden eine Einrichtung zur vorzugsweise optischen oder elektromagnetischen Erfassung der Position vorgesehen ist und vorteilhaft zur optischen Erfassung der Position zwei asymmetrische Öffnungen mit entgegengesetzter Orientierung, vorgesehen sind, die von mindestens einer Lichtquelle durchstrahlt werden, wobei vor oder hinter den Öffnungen ein vorzugsweise senkrecht zur Verschieberichtung orientierter Spalt vorgesehen ist und die Lichtmenge durch den Spalt für jede Öffnung separat detektiert wird.
Abstract:
Eine Spektrometer-Anordnung (10) enthält eine Strahlungsqeulle (11) mit kontinuierlichem Spektrum, einen Vormonochromator (2) zur Erzeugung eines Spektrums mit relativ geringer Lineardispersion aus welchem ein Spektrenausschnitt selektierbar ist, dessen spektrale Bandbreite kleiner oder gleich der Bandbreite des freien Spektralbereiches derjenigen Ordnung im Echelle-Spektrum ist, in der die Mittenwellenlänge des selektierten Spektrenausschnitts mit maximaler Blazeeffektivität messbar ist, ein Echelle-Spektrometer (4) mit Mitteln zur Wellenlängenkalibrierung, einen Eintrittsspalt (21) an dem Vormonochromator (2), eine Zwischenspalt-Anordnung (3) mit einem Zwischenspalt und einen ortsauflösenden Strahlungsempfänger (5) in der Austrittsebene des Spektrometers zur Detektion von Wellenlängen-Spektren. Die Anordnung ist dadurch gekennzeichnet, daβ die Breite des Zwischenspalts (3) gröβer ist, als das durch den Vormonochromator am Ort des Zwischenspaltes entstehende monochromatische Bild des Eintrittspaltes und Mittel zur Kalibrierung des Vormonochromators vorgesehen sind, durch welche die auf den Detektor abgebildete Strahlung der Strahlungsquelle mit kontinuierlichen Spektrum auf eine Referenzposition kalibrierbar ist.
Abstract:
An apparatus and method for producing a substantially straight instrument image (56) is provided. The apparatus and method for producing a substantially straight instrument image (56), according to the present invention, includes a curved slit (20). The curved slit (20) may be formed in a light beam controller (10). The curved slit (20) is capable of admitting a light beam (42) into the instrument (44). The instrument parameters associated with optical devices (46) located in the instrument (44) in the path of the light beam (42) are determined. One or more formulae are used to transform and process the instrument spectral parameters to determine the shape or curvature of the curved slit (20).
Abstract:
Spectrometer apparatus (10), for self-calibrating a color image scanner (30) of the line scanner or area scanner type, comprises a member (20), having an optical slit (18), movable into position on an optical axis (14) of the scanner between its polychromatic light source (12) and its focusable lens (16) in a plane occupied by a color image when it is scanned. A diffraction grating (24) is similarly movable onto the optical axis, a given distance from an image sensor (22) of the scanner. The light source illuminates the slit and the diffraction grating disperses transmitted polychromatic light according to its wavelength, forming duplicate spectra off-axis across respective halves of the image sensor, with longer wavelengths being diverted to respectively higher angles.
Abstract:
Apparatus for calibrating a slit width in a calibration system for spectroscopes. In conventional calibration systems, there has been a problem of no provision of slit width calibration function, though the precision of the slit width of spectroscopes is one of the important factors for its performance. In this invention, the bright line spectrum or the zero-order ray is utilized to calibrate the slit width. A peak value of the output signals from a photosensor (20) is detected by means of a peak discriminator (26), and the peak value is stored in a memory (28). The peak value is compared with the output of the photosensor (20) in a comparator (32). The slit width calibration may be performed on the basis of the amount of wave length scanning at which amount the peak value and the output of the photosensor are brought up to the coincidence with each other.
Abstract in simplified Chinese:本发明揭露一种光学波长分光设备,主要由一第一基板、一输入单元、一光栅以及一第二基板所组成。该输入单元形成于该第一基板上,并具有一狭缝以接收一光学信号;该光栅形成于该第一基板上,可根据该光学信号产生一输出之第一光束。其中,该输入单元以及该光栅系利用高能量光源对一光阻层进行曝光所形成。