Patents by Inventor Maciej Wojtkowski
Maciej Wojtkowski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230051920Abstract: A system for obtaining biomechanical parameters of ocular tissue includes an air-puff module to deliver an air-puff stimulus onto the ocular tissue, and an imaging device operatively coupled to the air-puff module. The air-puff module includes a transparent window at its front with a transparent through hole for delivering the air-puff stimulus. The hole is aligned with an imaging device optical axis, such that the air-puff stimulus delivered onto the ocular tissue can be centred on an apex of the ocular tissue and made collinear with the optical axis. The transparent window and through hole allow continuity of imaging of the ocular surface. The imaging device captures the 3D coordinates of points distributed on an ocular tissue surface in groups of simultaneous points. The system includes a component for selecting and changing location and distribution of captured points on the ocular tissue, and a processing component to process the points.Type: ApplicationFiled: February 2, 2021Publication date: February 16, 2023Inventors: Andrea CURATOLO, Susana MARCOS CELESTINO, Judith BIRKENFELD, Maciej WOJTKOWSKI, Karol KARNOWSKI, Ahmed ELSHEIKH, Ahmed ABASS, Ashkan ELIASY
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Patent number: 10856734Abstract: A system for examination of an eye of a subject includes a laser for irradiating a select portion of the retina with a short pulse light having a wavelength of about 800 nm to about 1400 nm at an intensity effective to stimulate two photon induced isomerization of visual pigments in the select portion of the retina of the subject's eye, and an input device to permit the subject to input a reaction or response of the subject to the irradiating light.Type: GrantFiled: May 30, 2018Date of Patent: December 8, 2020Assignee: POLGENIX, INC.Inventors: Grazyna Palczewski, Katarzyna Komar, Patrycjusz Emplewski, Maciej Wojtkowski
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Publication number: 20180271362Abstract: A system for examination of an eye of a subject includes a laser for irradiating a select portion of the retina with a short pulse light having a wavelength of about 800 nm to about 1400 nm at an intensity effective to stimulate two photon induced isomerization of visual pigments in the select portion of the retina of the subject's eye, and an input device to permit the subject to input a reaction or response of the subject to the irradiating light.Type: ApplicationFiled: May 30, 2018Publication date: September 27, 2018Inventors: Grazyna Palczewski, Katarzyna Komar, Patrycjusz Emplewski, Maciej Wojtkowski
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Publication number: 20160290784Abstract: The invention relates to applications of optical interference. It is already known to reduce speckle contrast by introducing arbitrary phase shifts in the reference light beam. According to the invention, such phase shifts are not introduced arbitrarily, but systematically whereby the phase changes are synchronised with the acquisition time intervals in such a way that interference fringes can be washed out in selected regions of the beam diameter maintaining high contrast of interference fringes in the desired regions at the same time. This technique can be used for enhancing the lateral resolution in imaging techniques and the bandwidth in optical communications.Type: ApplicationFiled: November 13, 2013Publication date: October 6, 2016Inventors: Maciej Wojtkowski, Maciej Nowakowski, Dawid Borycki
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Patent number: 9347880Abstract: The invention relates to a method and apparatus for measuring the spatial and velocity distribution of scattering structures of a sample in semi-transparent matter. The acquired spectral data I(k, t) are transformed in two steps to image data I(z, v). A Doppler shift is imposed on the light to a separate real and mirror images in the v space to suppress the complex ambiguity artifact.Type: GrantFiled: August 31, 2009Date of Patent: May 24, 2016Assignee: CANON OPHTHALMIC TECHNOLOGIES SP. Z O.OInventors: Maciej Szkulmowski, Maciej Wojtkowski, Anna Szkulmowska, Tomasz Bajraszewski
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Patent number: 8786862Abstract: The invention relates to an apparatus for generating a scannable optical delay for a beam of light and an apparatus for Fourier domain optical coherence tomography having said apparatus for generating a scannable optical delay in its reference arm (15). The light beam is directed to a pivotably driven mirror (10) from where it is reflected to a fixed mirror (12), and from there back retro reflected along the reference arm (5). Lens optics (9) are provided to ensure accurate optical alignment in several pivot positions of the pivotably driven mirror (10).Type: GrantFiled: July 10, 2009Date of Patent: July 22, 2014Assignee: Optopol Technology SP. Z O.OInventors: Maciej Wojtkowski, Maciej Szkulmowski, Tomasz Bajraszewski
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Patent number: 8570525Abstract: In an apparatus for imaging of objects by applying optical frequency domain tomography and provided with an adjusting system for setting a relative position of photosensitive elements (174) and a spectrum image (273), the adjusting system is an automatically controlled device causing a relative displacement of at least one photosensitive element (174) of the detection device (173) of the spectrum and the spectrum image (273) between each other. The adjusting system comprises at least one actuator (14, 16) acting on the dispersion device (171) and/or the set of optical elements (172) and/or the detection device (173) and movement of which causes the relative displacement between each other of at least one photosensitive element (174) of the detection device (173) of the spectrum and the spectrum image (273) of the resultant light beam (270).Type: GrantFiled: June 22, 2007Date of Patent: October 29, 2013Assignee: Optopol Technology S.A.Inventors: Pawel Wojdas, Grzegorz Slusarczyk, Tomasz Bajraszewski, Maciej Wojtkowski, Anna Szkulmowska, Piotr Targowski, Andrzej Kowalczyk
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Patent number: 8405834Abstract: In one aspect, the invention relates to a method of acquiring optical coherence tomographic data from a sample. The method includes the steps of scanning a first location on the sample to obtain a first set of optical coherence tomographic data, scanning a second location on the sample to obtain a second set of optical coherence tomographic data, and defining a fiducial position relative to a location on the sample using one of the two sets of optical coherence tomographic data. In one embodiment, the first set of optical coherence tomographic data is survey data. However, in another embodiment the first set of optical coherence tomographic data is sample measurement data.Type: GrantFiled: December 28, 2010Date of Patent: March 26, 2013Assignee: Massachusetts Institute of TechnologyInventors: Vivek Srinivasan, James Fujimoto, Tony Ko, Maciej Wojtkowski, Robert Huber
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Publication number: 20110164791Abstract: The invention relates to a method and apparatus for measuring the spatial and velocity distribution of scattering structures of a sample in semi-transparent matter. The acquired spectral data I(k, t) are transformed in two steps to image data I(z, v). A Doppler shift is imposed on the light to a separate real and mirror images in the v space to suppress the complex ambiguity artifact.Type: ApplicationFiled: August 31, 2009Publication date: July 7, 2011Applicant: OPTOPOL TECNOLOGY S.A.Inventors: Tomasz Bajraszewski, Anna Szkulmowska, Maciej Szkulmowski, Maciej Wojtkowski
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Publication number: 20110134394Abstract: In one aspect, the invention relates to a method of acquiring optical coherence tomographic data from a sample. The method includes the steps of scanning a first location on the sample to obtain a first set of optical coherence tomographic data, scanning a second location on the sample to obtain a second set of optical coherence tomographic data, and defining a fiducial position relative to a location on the sample using one of the two sets of optical coherence tomographic data. In one embodiment, the first set of optical coherence tomographic data is survey data. However, in another embodiment the first set of optical coherence tomographic data is sample measurement data.Type: ApplicationFiled: December 28, 2010Publication date: June 9, 2011Applicant: Massachusetts Institute of TechnologyInventors: Vivek Srinivasan, James Fujimoto, Tony Ko, Maciej Wojtkowski, Robert Huber
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Publication number: 20110122413Abstract: The invention relates to an apparatus for generating a scannable optical delay for a beam of light and an apparatus for Fourier domain optical coherence tomography having said apparatus for generating a scannable optical delay in its reference arm (15). The light beam is directed to a pivotably driven mirror (10) from where it is reflected to a fixed mirror (12), and from there back retro reflected along the reference arm (5). Lens optics (9) are provided to ensure accurate optical alignment in several pivot positions of the pivotably driven mirror (10).Type: ApplicationFiled: July 10, 2009Publication date: May 26, 2011Applicant: OPTOPOL TECHNOLOGY S.A.Inventors: Maciej Wojtkowski, Maciej Szkulmowski, Tomasz Bajraszewski
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Publication number: 20110063620Abstract: In an optical set for examining of objects comprising at least a slit lamp (140) having a body and comprising a positioning arrangement (130) for moving the slit lamp (140) with respect to an examined object (101), an optical arrangement and a projector (142) generating a beam of light, on the body (148) of the slit lamp (140) there is mounted, via a coupling arrangement (150), movably with respect to the body (148) of the slit lamp (140), a device for imaging objects using spectral optical coherence tomography (a SOCT device) (160), having at least part of an optical arrangement (163) comprising an object beam during examination of the object (101) by means of the SOCT device (160) situated between the optical arrangement (146) of the slit lamp (140) and the examined object (101).Type: ApplicationFiled: February 12, 2009Publication date: March 17, 2011Applicant: OPTOPOL TECHNOLOGY S.A.Inventors: Maciej Wojtkowski, Pawel Wojdas, Maciej Szkulmowski
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Patent number: 7884945Abstract: In one aspect, the invention relates to a method of acquiring optical coherence tomographic data from a sample. The method includes the steps of scanning a first location on the sample to obtain a first set of optical coherence tomographic data, scanning a second location on the sample to obtain a second set of optical coherence tomographic data, and defining a fiducial position relative to a location on the sample using one of the two sets of optical coherence tomographic data. In one embodiment, the first set of optical coherence tomographic data is survey data. However, in another embodiment the first set of optical coherence tomographic data is sample measurement data.Type: GrantFiled: January 20, 2006Date of Patent: February 8, 2011Assignee: Massachusetts Institute of TechnologyInventors: Vivek Srinivasan, James Fujimoto, Tony Ko, Maciej Wojtkowski, Robert Huber
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Publication number: 20090262359Abstract: In an apparatus for imaging of objects by applying optical frequency domain tomography and provided with an adjusting system for setting a relative position of photosensitive elements (174) and a spectrum image (273), the adjusting system is an automatically controlled device causing a relative displacement of at least one photosensitive element (174) of the detection device (173) of the spectrum and the spectrum image (273) between each other. The adjusting system comprises at least one actuator (14, 16) acting on the dispersion device (171) and/or the set of optical elements (172) and/or the detection device (173) and movement of which causes the relative displacement between each other of at least one photosensitive element (174) of the detection device (173) of the spectrum and the spectrum image (273) of the resultant light beam (270).Type: ApplicationFiled: June 22, 2007Publication date: October 22, 2009Applicant: OPTOPOL TECHNOLOGY S.A.Inventors: Tomasz Bajraszewski, Maciej Wojtkowski, Anna Szkulmowska, Piotr Targowski, Andrzej Kowalczyk, Pawel Wojdas, Grzegorz Slusarczyk