DEVICE AND A METHOD FOR POLARIZATION DEPENDENT IMAGING

    公开(公告)号:US20230392984A1

    公开(公告)日:2023-12-07

    申请号:US18203125

    申请日:2023-05-30

    Applicant: IMEC VZW

    Abstract: According to an aspect of the present inventive concept there is provided a device for polarization dependent imaging, comprising a detector comprising an array of light sensitive elements; a plurality of light propagating units, each comprising: a funnel element having a collecting end and a transmitting end, the funnel element being configured to collect light at the collecting end and propagate the light to the transmitting end; a waveguide having a receiving end and a distributing end, the waveguide being configured to receive the light from the transmitting end at the receiving end and propagate the light to the distributing end, wherein the waveguide is configured to propagate the light through the waveguide in dependence of polarization such that a distribution of the light at different locations of the distributing end is dependent on polarization of the light.

    LIGHT SOURCE, SPECTROSCOPIC ANALYSIS SYSTEM, AND SPECTROSCOPIC ANALYSIS METHOD

    公开(公告)号:US20230168124A1

    公开(公告)日:2023-06-01

    申请号:US17906891

    申请日:2021-03-17

    CPC classification number: G01J3/10 G01J3/0216 G01J2003/102

    Abstract: A spectroscopic analysis system includes a light source including a light emitting diode (51X), a wavelength converter (52X) configured to convert a wavelength of light output from the light emitting diode (51X), and a condenser (54X) configured to condense light output from the wavelength converter (52X), the light source including a mixing section configured to mix light output from the plurality of light emitting elements, and the wavelength of the light output from the plurality of light emitting elements being different, and a spectroscopic measurement section configured to acquire spectroscopic data by dispersing light reflected from an object on which the light source emits the light.

    Light Delivery and Collection Device for Performing Spectroscopic Analysis of a Subject

    公开(公告)号:US20180136133A1

    公开(公告)日:2018-05-17

    申请号:US15461613

    申请日:2017-03-17

    Abstract: This invention relates to a light delivery and collection device for performing spectroscopic analysis of a subject. The light delivery and collection device comprises a reflective cavity with two apertures. The first aperture is configured to receive excitation light which then diverges and projects onto the second aperture. The second aperture is configured to be applied close to the subject such that the reflective cavity substantially forms an enclosure covering a large area of the subject. The excitation light enters and interacts with the covered area of the subject to produce inelastic scattering and/or fluorescence emission from the subject. The reflective cavity has a specular reflective surface with high reflectivity to the excitation light as well as to the inelastic scattering and/or fluorescence emission from the subject. The reflective cavity reflects the excitation light that is reflected and/or back-scattered from the subject and redirects it towards the subject. This causes more excitation light to penetrate into a diffusely scattering subject to produce inelastic scattering and/or fluorescence emission from inside of the subject hence enabling sub-surface measurement. In addition, the reflective cavity reflects the inelastic scattering and/or fluorescence emission from the subject unless the inelastic scattering and/or fluorescence emission either emits from the first aperture of the reflective cavity to be measured with a spectrometer device, or re-enters the subject at the second aperture. This multi-reflection process improves the collection efficiency of the inelastic scattering or fluorescence emission from the subject.

    METHOD AND APPARATUS FOR TRANSDERMAL IN VIVO MEASUREMENT BY RAMAN SPECTROSCOPY

    公开(公告)号:US20170273564A1

    公开(公告)日:2017-09-28

    申请号:US15508580

    申请日:2015-08-24

    Abstract: The use of a transdermal Raman spectrum to measure glucose or other substance concentration can give an inaccurate result if the Raman signals originate at a wrong skin depth. To predict whether a spectrum of Raman signals received transdermally in a confocal detector apparatus and having at least one component expected to have an intensity representing the concentration of glucose or another skin component at a point of origin of the Raman signals below the surface of the skin will accurately represent the concentration, peaks in the spectrum at 883/4 cm−1 and 894 cm−1 are measured to determine whether the Raman signals originate primarily within the stratum corneum so that the spectrum will be less likely to represent the concentration accurately or originate primarily below the stratum corneum so that the spectrum will be more likely to represent the concentration accurately.

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