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| Number | Title | Issue Date |
| 5206710 | Method and apparatus for thermowave analysis A method and apparatus for thermowave analysis employs a single laser beam, which has an additive, two-frequency, intensity modulation, and is directed onto the object. The amplitude of the mixed frequency of the discrete modulation frequencies, which is ... | 04/27/1993 |
| 5180127 | Device for adjustably setting up an aerial photograph measuring chamber System for the adjustable, substantially horizontal aligning of an apparatus on at least two points of support in the case of at least one tilt axis, the points of support being connected with the pistons of hydraulic cylinders. A hydraulic connection exi... | 01/19/1993 |
| 5136429 | Modular illumination equipment Modular illumination system for transmitted-light microscopes, embodying the Koehler illumination principle, and usable on microscopes of short or long optical transmission length, including a telecentering lens disposed in the light beam path defined acc... | 08/04/1992 |
| 5094727 | Electrolyte for producing conversion coatings By means of an electrolyte free of ammonia, cyanide, and fluoride, hence low in harmful substances and inoffensive to the environment, optically black coatings having a thickness of less than 10 microns and substantially equal optical absorption and therm... | 03/10/1992 |
| 5075178 | Black surface layer on light metal The invention relates to a cyanide-free electrolyte being harmless to the environment and to health which makes feasible the production of black surface layers on light metals or on alloys of the latter, preferably titanium, remaining deeply-black and adh... | 12/24/1991 |
| 5056901 | Wide-angle objective A wide-angle objective for a picture-taking lens of an aerial mapping camera, consisting of 11 lenses and 14 glass-air surfaces, the first optical element of which after the center aperture on the picture side is a converging fluorspar or fluorspar-like l... | 10/15/1991 |
| 5035781 | Electrolyte for the production of black surface layers on light metals The invention relates to a cyanide-free electrolyte being harmless to the environment and to health which makes feasible the production of black surface layers on light metals or on alloys of the latter, preferably titanium, remaining deeply-black and adh... | 07/30/1991 |
| 5006981 | System bus expansion for coupling multimaster-capable multicomputer systems A system bus expansion which guarantees the coupling of multimaster-capable multicomputer systems and acts as an interface between spatially separated but mutually disposed system components. The expansion includes a separate expansion module, serving as ... | 04/09/1991 |
| 4979823 | Method and arrangement for background compensation in material analysis In a background compensation in material analysis, the value of the background signal is separated from the value of a gross analyte signal generated by athermal radiation excitation after thermal excitation. The thermal atomization takes place in a stepw... | 12/25/1990 |
| 4930878 | Achromatic phase retarder arrangement An achromatic phase retarder comprises at least one prismatic body with two total reflection surfaces. The light entry surface forms an angle of incidence , which is different from 90°, with the direction of incidence of a light beam, and a first ... | 06/05/1990 |
| 4879684 | Write-read circuit A read-write circuit has two data lines each of which is associated with a read circuit. The read circuit consists of three transistors connected in series, which operate in the low-signal mode in reading. By taking current from or into the bit lines acco... | 11/07/1989 |
| 4869590 | Geodetic instrument The invention relates to a geodetic instrument with a telescope, an objective with a reticle in the focal plane, a clinometer and optoelectronic elements with the objective of avoiding faulty measurements due to a vibrating or oscillating target image, as... | 09/26/1989 |
| 4856898 | Adjustable echelle spectrometer arrangement and method for its adjustment An adjustable Echelle spectrometer arrangement which can be used in single- and multi-element analysis by the emission or absorption of optical radiation. To compensate all the manufacturing and setup errors, the only arrangements present are those to cha... | 08/15/1989 |
| 4843256 | Controlled CMOS substrate voltage generator A controlled CMOS substrate voltage generator generates a rectangular wave pulse which is supplied to the pumping circuit by a pumping capacitor and controlled decoupling members. At the same time the decoupling members are activated by a control circuit ... | 06/27/1989 |
| 4831319 | Method for the phase synchronization of step-drive controlled equipment A method for the phase synchronization of equipment controlled by stepping drives, especially optical modulating systems for multiple-beam spectral photometers. Each time that the equipment is started up, a reference signal is made synchronous with a sync... | 05/16/1989 |
| 4826318 | Apparatus for electrothermal atomization In an apparatus for electrothermal atomization, which can be used for flameless atomic absorption spectroscopy as well as for flameless atomic emission spectroscopy, a platform positioned in a graphite tube is divided into two functional axially adjacent.... | 05/02/1989 |
| 4758851 | Method for the determination and indication of the supply of film in aerial photography cameras A method is provided for determining and indicating a supply of film remaining in an aerial photography camera, which results in greater measuring precision and improved indication options. While film is advanced during a film step from a film feed spool ... | 07/19/1988 |
| 4739167 | Device for synchronous modulation, synchronous light-path switch-over and control-signal derivation for step-drive controlled modulation and switch-over devices Device for synchronous modulation, synchronous light-path switch-over and control-signal derivation for step-drive controlled modulation and switch-over devices, especially for multibeam spectral analysis equipment and preferably for the infrared region o... | 04/19/1988 |
| 4735487 | Optical apparatus for analyzing two-dimensional input objects An apparatus for analyzing two-dimensional input objects comprising an illumination system including a lighting unit, a Fourier transform module and a receiver unit. The lighting unit generates an incoherent illuminating beam of predetermined form and are... | 04/05/1988 |
| 4734724 | Method and arrangement for the automatic control of aerial photographic cameras A method and an arrangement for the automatic control of aerial photography cameras, in which a lens portrays the terrain overflown on a projected area, at least two photodetector rows being disposed on the projected area perpendicularly to the direction ... | 03/29/1988 |
| 4711572 | Method and arrangement for multielement analyse The invention relates to an arrangement and method for multielement analyse of chemical elements in which light cables are used to transmit spectral lines or bands produced by an optical dispersion means from a sample material radiation to an array of pho... | 12/08/1987 |
| 4691110 | Laser spectral fluorometer In order to improve the sensitivity and the spectral resolution in measuring the luminescence of diverse sample materials, adapted optical imaging relationships at variable excitation output are provided for the different optical paths of the luminescence... | 09/01/1987 |
| 4690559 | Optical system for spectral analysis devices The invention relates to an optical system for spectral analysis devices particularly for use in atomic emission spectroscopy in which the aberrations, astigmatis and coma are compensated separately, comprising two concave spherical reflectors adjacently ... | 09/01/1987 |
| 4660976 | Method and device for electrothermal atomization of a sample material The invention relates to a method and device for electrothermal atomization of a sample material, particularly for use in atomic absorption or atomic fluorescence spectroscopy in which an atomizing apparatus including a graphite tube sealed towards ambien... | 04/28/1987 |
| 4656408 | Xy-surface drive having limited $c;-rotation and z-movement An xy-surface drive of limited $c;-rotation and z-movement, has three box coils, positioned at mutual angles of 120°, the coils being mechanically connected to each other, and guided in the working air-gap of the magnet ring segment system such that w... | 04/07/1987 |
| 4633090 | Method and apparatus for particle irradiation of a target Method and apparatus for particle irradiation of a target, wherein the anisotropic contrast deflection of an irradiation modulator for producing the exposure pattern is produced step by step, the magnitude of the potential difference between the electrode... | 12/30/1986 |
| 4600283 | Apparatus and method for the automatic control of an aerial photographic camera Method and apparatus for automatically controlling aerial photographic cameras. An exact and reliable control device of low electronic and optical cost, which unburdens the operator, is realized by means of two photoreceiver lines positioned parallel to e... | 07/15/1986 |
| 4466717 | Optical system for lantern slide projection This invention relates to an optical system for lantern slide projection, especially for star projectors in planetariums, with the aim of increasing the available light for the projection. The development consists in attaining an increase in brightness an... | 08/21/1984 |
| 4441812 | Method and apparatus for automatic alignment of an angle-measuring instrument A method and an arrangement for automatic alignment of a geodetic angle measuring device, especially an electronic tachymeter for topographical survey, in the marking and measuring of points. The object of the invention consists in a rapid and precise, ye... | 04/10/1984 |
| 4442497 | Measuring system for alignment and measurement with an electronic tachymeter A system for alignment and measurement of positions includes an electronic tachymeter and a reflector system. A processing system calculates the difference, in given coordinates, between the position of the reflector system and a position of known coordin... | 04/10/1984 |
| 4441789 | Resonance absorber An improvement in a resonance absorber of refractive index n and absorption coefficient k wherein a medium of refractive index na is disposed frontally thereof is disclosed in which the thickness of the absorption material is made equal to mλ/... | 04/10/1984 |
| 4417060 | Amino-substituted 2-cumaryl-(3)-chromenylium salts The present invention is directed to novel amino-substituted 2-cumaryl-3'-chromenylium salts of the general formula ##STR1## wherein R3 and R7 are a dialkyl or cycloalkyl disubstituted amino group, hydrogen, or hydroxy group, pr... | 11/22/1983 |
| 4401368 | Projecting screen for optical purposes A projecting screen for optical purposes which meets the stringent requirements for the reproduction of macroscopic as well as microscopic images in transmission operation. The object comprises providing a projection screen comprising several scattering m... | 08/30/1983 |
| 4349244 | High quality objective using air bearing The invention is directed to improving alignment of optical components within an overall objective cylinder along an optical axis by providing an outside source of compressed air which flows into and out of the outer hollow cylinder of the objective, thro... | 09/14/1982 |
| 4347739 | Measuring equipment for the determination of terrestrial refraction A measuring arrangement is described for determining the terrestrial refraction in geodetic measurements, (such as trigonometric height transfers when staking out and for precision tachymetry, controlling devices for building machinery using a laser beam,... | 09/07/1982 |
| 4335935 | Arrangement for the induced absorption of electromagnetic radiation An absorption device for electromagnetic radiation includes a plurality of layers positioned to the path of the radiation, in the following order: a transparent layer, an absorbing layer, a plurality of non-absorbing layers having alternate low and high r... | 06/22/1982 |
| 4318614 | Emission spectral analysis device In a device for the emission spectral analysis of samples, including an evaporating tube for receiving and thermally evaporating a sample, and a hollow cathode and anode for athermally exciting the evaporated sample, the evaporation tube forms said cathod... | 03/09/1982 |
| 4308085 | Process for the preparation of high molecular thermoplastic epoxide-amine-polyadducts High molecular linear, thermoplastic, epoxide-amine-adducts containing the structural segment ##STR1## are prepared by a solvent-free reaction of equivalent amounts at 20 to 200° C. of N,N'-bis(aralkyl) diamines (for example, N,N'-dibenzyl-ethy... | 12/29/1981 |
| 4289401 | Optical system for spectral devices The invention relates to an optical system for spectral devices which improves the resolution of a spectral line image up to the edge portions by use of at least two collimators. The collimators are adjacently located in direction of dispersion and differ... | 09/15/1981 |
| 4126376 | Manipulation device for precision adjustments including a double microscope having adjustable optical axes The invention relates to a manipulation device for precision adjustment of plane pattern bearing substrates being provided with two adjustment marks which are at different distances relative to a reference mark, which is, for example, a graduation plate. ... | 11/21/1978 |
