Light emitting device for emitting diffuse ultraviolet light

    公开(公告)号:US11143799B2

    公开(公告)日:2021-10-12

    申请号:US16926934

    申请日:2020-07-13

    Abstract: A diffusive layer including a laminate of a plurality of transparent films is provided. At least one of the plurality of transparent films includes a plurality of diffusive elements with a concentration that is less than a percolation threshold. The plurality of diffusive elements are optical elements that diffuse light that is impinging on such element. The plurality of diffusive elements can be diffusively reflective, diffusively transmitting or combination of both. The plurality of diffusive elements can include fibers, grains, domains, and/or the like. The at least one film can also include a powder material for improving the diffusive emission of radiation and a plurality of particles that are fluorescent when exposed to radiation.

    Ultraviolet irradiation of fluids
    142.
    发明授权

    公开(公告)号:US11124750B2

    公开(公告)日:2021-09-21

    申请号:US16142965

    申请日:2018-09-26

    Abstract: Ultraviolet irradiation of fluids for the purposes of disinfection, sterilization and modification of a target organic compound found within the fluids. The target compound in the fluids can have an absorption spectra with an ultraviolet wavelength ranging from 230 nm to 360 nm. The absorption spectra includes a first and second set of wavelengths corresponding to absorption peaks and absorption valleys in the absorption spectra, respectively. A-set of ultraviolet radiation sources irradiate the fluids. The set of ultraviolet radiation sources operate at a set of peak wavelengths ranging from 230 nm to 360 nm with a peak full width at half maximum that is less than 20 nm. The set of peak wavelengths are proximate to at least one wavelength in the second set of wavelengths corresponding to the absorption valleys in the absorption spectra with a variation of a full width half maximum of the absorption valley.

    Illuminator with Ultraviolet and Blue-Ultraviolet Light Source

    公开(公告)号:US20200276345A1

    公开(公告)日:2020-09-03

    申请号:US16878509

    申请日:2020-05-19

    Abstract: An illuminator comprising more than one set of ultraviolet radiation sources. A first set of ultraviolet radiation sources operate in a wavelength range of approximately 270 nanometers to approximately 290 nanometers. A second set of ultraviolet radiation sources operate in a wavelength range of approximately 380 nanometers to approximately 420 nanometers. The illuminator can also include a set of sensors for acquiring data regarding at least one object to be irradiated by the first and the second set of ultraviolet radiation sources. A control system configured to control and adjust a set of radiation settings for the first and the second set of ultraviolet radiation sources based on the data acquired by the set of sensors.

    Ultraviolet surface illumination system

    公开(公告)号:US10517974B2

    公开(公告)日:2019-12-31

    申请号:US15478759

    申请日:2017-04-04

    Abstract: A diffusive ultraviolet illuminator is provided. The illuminator can include a reflective mirror and a set of ultraviolet radiation sources located within a proximity of the focus point of the reflective mirror. The ultraviolet radiation from the set of ultraviolet radiation sources is directed towards a reflective surface located adjacent to the illuminator. The reflective surface can diffusively reflect at least 30% the ultraviolet radiation and the diffusive ultraviolet radiation can be within at least 40% of Lambertian distribution. A set of optical elements can be located between the illuminator and the reflective surface in order to direct the ultraviolet radiation towards at least 50% of the reflective surface.

    Lateral/vertical semiconductor device with embedded isolator

    公开(公告)号:US10483387B2

    公开(公告)日:2019-11-19

    申请号:US15464609

    申请日:2017-03-21

    Abstract: A lateral/vertical device is provided. The device includes a device structure including a device channel having a lateral portion and a vertical portion. The lateral portion of the device channel can be located adjacent to a first surface of the device structure, and one or more contacts and/or a gate can be formed on the first surface. The device structure also includes a set of insulating layers located in the device structure between the lateral portion of the device channel and a second surface of the device structure opposite the first surface. An opening in the set of insulating layers defines a transition region between the lateral portion of the device channel and a vertical portion of the device channel. A contact to the vertical portion of the device channel can be located on the second surface.

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