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Patent
Publication NumberUS 20200150324Filing StatusPatent ApplicationAvailabilityUnknownFiling Date2020-01-17Publication Date2020-05-14
Optical beam steering and focusing systems, devices, and methods that utilize diffractive waveplates are improved to produce high efficiency at large beam deflection angles, particularly around normal incidence, by diffractive waveplate architectures comprising a special combination of liquid crystal polymer diffractive waveplate both layers with internal twisted structure and at a layer with uniform structure.
Patent
Publication NumberUS 20200150323Filing StatusPatent ApplicationAvailabilityUnknownFiling Date2020-01-17Publication Date2020-05-14
Methods, systems and devices for diffractive waveplate lens and mirror systems allowing electronically pointing and focusing light at different focal planes. The system can be incorporated into a variety of optical schemes for providing electrical control of transmission. In another embodiment, the system comprises diffractive waveplates of different functionality to provide a system for controlling not only focusing but other propagation properties of light including direction, phase profile…
Patent
Publication NumberUS 10557977Filing StatusIssued PatentAvailabilityUnknownFiling Date2018-12-14Publication Date2020-02-11
Methods, systems and devices for diffractive waveplate lens and mirror systems allowing electronically focusing light at different focal planes. The system can be incorporated into a variety of optical schemes for providing electrical control of transmission. In another embodiment, the system comprises diffractive waveplates of different functionality to provide a system for controlling not only focusing but other propagation properties of light including direction, phase profile, and intensi…
Patent
Publication NumberUS 20200025987Filing StatusPatent ApplicationAvailabilityUnknownFiling Date2018-12-07Publication Date2020-01-23
Methods of fabricating optical lenses and mirrors, systems and composite structures based on diffractive waveplates, and fields of application of said lenses and mirrors that include imaging systems, astronomy, displays, polarizers, optical communication and other areas of laser and photonics technology. Diffractive lenses and mirrors of shorter focal length and larger size, with more closely spaced grating lines, and with more exacting tolerances on the optical characteristics, can be fabric…
Patent
Publication NumberWO 2019229335 A1Filing StatusPatent ApplicationAvailabilityUnknownFiling Date2019-05-23Publication Date2019-12-05
The invention relates to a device (100) for detecting the position of a laser beam (15) with a predetermined diameter and emitted by a laser of an additive manufacturing machine, said detection device (100) comprising an upper portion (102) comprising a scanning zone (108) of the laser beam (15), said scanning zone (108) comprising, at the centre thereof, a circular hole (111) with a diameter substantially equal to the diameter of the laser beam and with a predetermined position; the detectio…
Patent
Publication NumberWO 2019229334 A1Filing StatusPatent ApplicationAvailabilityUnknownFiling Date2019-05-23Publication Date2019-12-05
Analysis system (310) for a powder jet of an additive manufacturing machine, said powder jet (21) comprising powder and gas, said analysis system (310) comprising a separation device (312), said separation device (312) comprising: - a separator element (326, 327) comprising a circular side wall (328) defining a cylinder and at least one separation wall (330) suitable for separating the inner volume of said separator element (326, 327) into n equal portions that are symmetric with respect to t…
Patent
Publication NumberFR 3081365 A1Filing StatusPatent ApplicationAvailabilityUnknownFiling Date2018-05-28Publication Date2019-11-29
Analysis system (310) for a powder jet of an additive manufacturing machine, said powder jet (21) comprising powder and gas, said analysis system (310) comprising a separation device (312), said separation device (312) comprising: - a separator element (326, 327) comprising a circular side wall (328) defining a cylinder and at least one separation wall (330) suitable for separating the inner volume of said separator element (326, 327) into n equal portions that are symmetric with respect to t…
Patent
Publication NumberFR 3081366 A1Filing StatusPatent ApplicationAvailabilityUnknownFiling Date2018-05-28Publication Date2019-11-29
The invention relates to a device (100) for detecting the position of a laser beam (15) with a predetermined diameter and emitted by a laser of an additive manufacturing machine, said detection device (100) comprising an upper portion (102) comprising a scanning zone (108) of the laser beam (15), said scanning zone (108) comprising, at the centre thereof, a circular hole (111) with a diameter substantially equal to the diameter of the laser beam and with a predetermined position; the detectio…
Patent
Publication NumberUS 10436957Filing StatusIssued PatentAvailabilityUnknownFiling Date2016-10-27Publication Date2019-10-08
Diffractive waveplate lenses, mirrors, devices, systems and methods for performing imaging over a broad spectral band in imaging systems, such as but not limited to astronomical imaging, surveillance imaging, and in communication systems, such as laser communication systems. Corrector mirrors are used with a flat diffractive wave diffractive waveplate lens so that chromatic aberrations of the diffractive waveplate lens are reduced with the imaging system.
Patent
Publication NumberUS 10423045Filing StatusIssued PatentAvailabilityUnknownFiling Date2016-11-14Publication Date2019-09-24
Optical beam shaping systems and methods can include an illumination source and a diffractive waveplate diffuser. The diffractive waveplate diffuser includes a layer of patterned optically anisotropic material. In one embodiment, the layer of patterned optically anisotropic material is fabricated in the form of patterned, optically anisotropic liquid crystal polymer. In another embodiment, the layer of patterned optically anisotropic material is a layer of liquid crystal, the diffractive wave…
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