Optical device comprising a micro-optical system and a retainer, and method for producing an optical device

    公开(公告)号:US10690877B2

    公开(公告)日:2020-06-23

    申请号:US15500643

    申请日:2015-07-24

    摘要: The present invention relates to an to an optical device comprising a micro-optical system and a retainer, and to a method for producing an optical device. In the case of the device according to the invention, the micro-optical system (10) is fastened in such a way that the micro-optical system is oriented in relation to a surface (50) of the retainer (60). The device is characterized in that the retainer (60) has a round, tapered recess (40) and the micro-optical system (10) is fastened on a spherical cap (20) and the spherical cap (20) is fastened to the retainer (60), wherein the spherical cap (20) at least partially protrudes into the recess (40) and lies against a partial surface (30) of the recess (40) or an edge (41) in the recess (40), wherein the spherical cap (20) is fastened to the retainer (60) in the recess (40), but is not fastened where the spherical cap lies in contact. Because the spherical cap lies in contact, shrinking of a fasting means cannot cause a shift or rotation of the spherical cap and thus cannot cause a misadjustment.

    MOLECULAR SENSOR FOR NMR/MRI BASED ON ANALYTE-DEPENDENT SPECTRAL CHANGES OF TEMPORARILY ENCAPSULATED HYPERPOLARIZED 129XE

    公开(公告)号:US20190307907A1

    公开(公告)日:2019-10-10

    申请号:US16315368

    申请日:2017-07-28

    摘要: The present invention relates to a precursor of a molecular sensor for determining analyte concentrations and/or measuring analyte concentration changes comprising a host for an active nucleus, an NMR-modulating moiety and an interacting moiety, wherein said NMR-modulating moiety changes the resonance frequency or the chemical exchange saturation transfer (CEST) signal of the active nucleus-host complex, and wherein said interacting moiety specifically responds to an environmental parameter, to an analyte or to a target molecule that binds the analyte or said interacting moiety specifically binds to a target molecule in an analyte-dependent manner. The present invention further relates to a molecular sensor comprising an active nucleus and said precursor. The present invention further relates to a molecular sensor for determining analyte concentrations and/or measuring analyte concentration changes inside a cell, wherein moiety/ies of the sensor are expressed in said cells and then assembled inside said cell. The present invention further relates to uses of the molecular sensors as well as to an in vitro method for determining metal concentration and/or measuring metal concentration changes and a method for diagnosing and/or monitoring treatment of diseases causing changes in metal concentrations.

    Laser diode with distributed feedback and method for producing

    公开(公告)号:US10348056B2

    公开(公告)日:2019-07-09

    申请号:US15736631

    申请日:2016-03-09

    IPC分类号: H01S5/12 H01S5/20 H01S5/026

    摘要: Laser diode comprises an active layer; a waveguiding region at least partially surrounding the active layer; a rear facet; a front facet designed for outcoupling laser radiation, wherein the active layer extends at least partially along a first axis (X) between the rear facet and the front facet; and a grating operatively connected to the waveguiding region, wherein the grating comprises a plurality of bridges and trenches designed such that an average increase of a coupling parameter P for the plurality of trenches along the grating is non-zero, wherein the coupling parameter P of a trench is defined by the equation, wherein dres is a distance of the trench to the active layer, w is a width of the trench and Δn is the refractive index difference between a refractive index of the trench and a refractive index of a material surrounding the trench.

    MODULATOR FOR A DIGITAL AMPLIFIER
    45.
    发明申请

    公开(公告)号:US20190131999A1

    公开(公告)日:2019-05-02

    申请号:US16092883

    申请日:2017-04-12

    发明人: Florian HÜHN

    摘要: The present invention relates to a modulator for a digital amplifier and a device comprising such a modulator and a digital amplifier.The modulator (100) comprises a pulse shaper (110) and a control unit (120) for controlling the pulse shaper (110) to convert an input signal into a bit stream (130) configured for a digital amplifier which encodes an amplitude value per clock of a carrier signal. The pulse shaper (110) can represent a respective amplitude value of the input signal with different bit patterns. The bit pattern respectively used by the pulse shaper is determined by the control unit (120) by means of a corresponding, associated control command. The modulator (100) is characterized in that in the control unit (120) an assignment (160) of the control commands to associated amplitude values resulting from amplification of the associated bit patterns with the digital amplifier (400) is stored or at least is provided in that the control unit (120) selects a control command per clock by means of the assignment (160) and the amplitude value of the input signal and drives the pulse shaper (110) accordingly.

    OPTICAL SYSTEM AND METHOD FOR SPECTROSCOPY

    公开(公告)号:US20180095040A1

    公开(公告)日:2018-04-05

    申请号:US15725448

    申请日:2017-10-05

    IPC分类号: G01N21/65 G01N21/53

    摘要: Optical systems and methods for spectroscopy are described. The optical system may be particularly suitable for Raman spectroscopy and includes a multispectral excitation source, designed to emit monochromatic excitation radiation successively at at least two different excitation wavelengths along a common beam axis; an elongated flow volume with a longitudinal axis, designed to direct a particle flow along the longitudinal axis; an excitation beam path, designed to irradiate the monochromatic excitation radiation into the flow volume at a first position and the second position that are located in the flow volume and the first position is spaced apart from the second position; and a detection device, designed to wavelength-selectively filter and detect a portion of a radiation scattered from the first position at a first filter wavelength and to wavelength-selectively filter and detect a portion of a radiation scattered from the second position at a second filter wavelength.