Patents by Inventor Elad Sharlin
Elad Sharlin 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: 20220155629Abstract: A system for uniform optical illumination of an image light provider in a smaller (compact) configuration than conventional implementations includes a lightguide having: a first external surface and a second external surface mutually parallel, and a first sequence of facets, at least a portion of which are: a plurality of parallel, partially reflecting, and polarization selective surfaces, at an oblique angle relative to the first and second external surfaces, and between the first and second external surfaces, and a front-lit reflective polarization rotating image modulator: deployed to spatially modulate light coupled-out from the first external surface, outputting reflected light corresponding to an image, and deployed such that the reflected light traverses the lightguide from the first external surface via the first sequence of facets to the second external surface.Type: ApplicationFiled: February 8, 2022Publication date: May 19, 2022Inventors: Elad SHARLIN, Yochay DANZIGER
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Publication number: 20220137274Abstract: A method of fabricating a light-guide optical element having a plurality of partially reflecting surfaces is disclosed. The method includes providing a plurality of transparent plates, each plate polished on two opposite surfaces such that the surfaces are parallel to each other, coating a first of the surfaces of a subset of plates with a first coating, coating a second of the surfaces of the subset of plates with a second coating; bonding together the plurality of transparent plates to form a stack, and cutting the stack along parallel planes obliquely angled to the faces of the transparent plates so as to form the optical element, wherein the first coating is a partially reflective coating have a first set of mechanical properties, and the second coating is selected from the group consisting of: a coating similar to the first coating and a non-reflective coating having a second set of mechanical properties substantially similar to the first set of mechanical properties.Type: ApplicationFiled: April 14, 2020Publication date: May 5, 2022Inventors: Elad SHARLIN, Dror HERMONI
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Publication number: 20220113549Abstract: A collimated image projector that receives light from an illuminating source and propagates the light along a light path towards an exit pupil, the projector comprising: a first homogeneous dielectric polarizing beam splitter (PBS) deployed along the light path and defining a first transition from a first light path segment to a second light path segment; a second homogeneous dielectric PBS deployed parallel to the first PBS along the second light path segment and defining a second transition from the second light path segment to a third light path segment; and collimating optics deployed along the light path after the second PBS so as to direct a collimated image towards the exit pupil; wherein the first and second PBSs are deployed such that either the first and second transitions are both performed via transmission, or the first and second transitions are both performed via reflection.Type: ApplicationFiled: February 27, 2020Publication date: April 14, 2022Inventors: Yochay DANZIGER, Elad Sharlin, Ronen CHRIKI
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Publication number: 20220091037Abstract: Optical sample characterization facilitates measurement and testing such as transmittance or reflectance at any discrete angle in a full range of angles of light propagation through a coated glass plate having a higher than air index of refraction. A rotatable assembly includes a cylinder having a hollow, and a receptacle including the hollow. The receptacle also contains a fluid having a refractive index matching the refractive index of the cylinder and coated plate. An optical light beam is input normal to the surface of the cylinder, travels through the cylinder, then via the index matching fluid through the coating, the coated glass plate, the fluid, the other side of the cylinder, and is collected for analysis. Due at least in part to the index matching fluid surrounding the coated plate, the plate can be rotated through a full range of angles (±90°, etc.) for full range testing of the coating.Type: ApplicationFiled: December 7, 2021Publication date: March 24, 2022Inventors: Chaim ALDAAG, Tzofia LAVI, Dror HERMONI, Jonathan GELBERG, Yosef LAVIAN, Netanel GOLDSTEIN, Elad SHARLIN, Elad LAVI, Kobi GREENSTEIN, Amir SHAPIRA, Mordechai GILO, Tsion EISENFELD
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Patent number: 11262587Abstract: A display device (10) for producing images to be viewed by an observer includes an optical system (14) and a control unit (20). The optical system receives input light indicative of an image into a light propagation channel (14A) and produces, at an exit pupil (14B), output light having a field of view (FOV) corresponding to the image to be presented to the observer (18). The light propagation channel has an intensity transfer function map I1(x,?) of the optical system across a lateral dimension x of the exit pupil and an angular 20 span ? of the FOV.Type: GrantFiled: May 22, 2019Date of Patent: March 1, 2022Assignee: LUMUS LTD.Inventors: Yuval Rubin, Elad Sharlin
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Patent number: 11243434Abstract: A system for uniform optical illumination of an image light provider in a smaller (compact) configuration than conventional implementations includes a lightguide having: a first external surface and a second external surface mutually parallel, and a first sequence of facets, at least a portion of which are: a plurality of parallel, partially reflecting, and polarization selective surfaces, at an oblique angle relative to the first and second external surfaces, and between the first and second external surfaces, and a front-lit reflective polarization rotating image modulator: deployed to spatially modulate light coupled-out from the first external surface, outputting reflected light corresponding to an image, and deployed such that the reflected light traverses the lightguide from the first external surface via the first sequence of facets to the second external surface.Type: GrantFiled: July 19, 2018Date of Patent: February 8, 2022Assignee: LUMUS LTD.Inventors: Elad Sharlin, Yochay Danziger
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Patent number: 11221294Abstract: Optical sample characterization facilitates measurement and testing such as transmittance or reflectance at any discrete angle in a full range of angles of light propagation through a coated glass plate having a higher than air index of refraction. A rotatable assembly includes a cylinder having a hollow, and a receptacle including the hollow. The receptacle also contains a fluid having a refractive index matching the refractive index of the cylinder and coated plate. An optical light beam is input normal to the surface of the cylinder, travels through the cylinder, then via the index matching fluid through the coating, the coated glass plate, the fluid, the other side of the cylinder, and is collected for analysis. Due at least in part to the index matching fluid surrounding the coated plate, the plate can be rotated through a full range of angles (±90°, etc.) for full range testing of the coating.Type: GrantFiled: April 7, 2019Date of Patent: January 11, 2022Assignee: LUMUS LTD.Inventors: Chaim Aldaag, Tzofia Lavi, Dror Hermoni, Jonathan Gelberg, Yosef Lavian, Netanel Goldstein, Elad Sharlin, Elad Lavi, Kobi Greenstein, Amir Shapira, Mordechai Gilo, Tsion Eisenfeld
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Publication number: 20210055218Abstract: Optical sample characterization facilitates measurement and testing such as transmittance or reflectance at any discrete angle in a full range of angles of light propagation through a coated glass plate having a higher than air index of refraction. A rotatable assembly includes a cylinder having a hollow, and a receptacle including the hollow. The receptacle also contains a fluid having a refractive index matching the refractive index of the cylinder and coated plate. An optical light beam is input normal to the surface of the cylinder, travels through the cylinder, then via the index matching fluid through the coating, the coated glass plate, the fluid, the other side of the cylinder, and is collected for analysis. Due at least in part to the index matching fluid surrounding the coated plate, the plate can be rotated through a full range of angles (±90°, etc.) for full range testing of the coating.Type: ApplicationFiled: April 7, 2019Publication date: February 25, 2021Inventors: Chaim ALDAAG, Tzofia LAVI, Dror HERMONI, Jonathan GELBERG, Yosef LAVIAN, Netanel GOLDSTEIN, Elad SHARLIN, Elad LAVI, Kobi GREENSTEIN, Amir SHAPIRA, Mordechai GILO, Tsion EISENFELD
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Publication number: 20210033872Abstract: A display device (10) for producing images to be viewed by an observer includes an optical system (14) and a control unit (20). The optical system receives input light indicative of an image into a light propagation channel (14A) and produces, at an exit pupil (14B), output light having a field of view (FOV) corresponding to the image to be presented to the observer (18). The light propagation channel has an intensity transfer function map I1(x,?) of the optical system across a lateral dimension x of the exit pupil and an angular 20 span ? of the FOV.Type: ApplicationFiled: May 22, 2019Publication date: February 4, 2021Inventors: Yuval RUBIN, Elad SHARLIN
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Publication number: 20210033773Abstract: An optical device includes a lightguide having a first pair of external surfaces parallel to each other, and at least two sets of facets. Each of the sets including a plurality of partially reflecting facets parallel to each other, and between the first pair of external surfaces. In each of the sets of facets, the respective facets are at an oblique angle relative to the first pair of external surfaces, and at a non-parallel angle relative to another of the sets of facets. The optical device is particularly suited for optical aperture expansion.Type: ApplicationFiled: June 26, 2018Publication date: February 4, 2021Inventors: Yochay DANZIGER, Elad SHARLIN
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Publication number: 20200249481Abstract: A display has an image projector projecting collimated image illumination along a projection direction, and an optical element having two major surfaces and containing partially reflective surfaces which are internal to the optical element, planar, mutually parallel and overlapping relative to the projection direction. Each ray of the collimated image illumination enters the optical element and is partially reflected by at least two of the partially reflective surfaces so as to be redirected to exit the first major surface along a viewing direction. An alternative implementation, a first reflection from one of the partially reflective surfaces redirects part of the image illumination rays so as to undergo total internal reflection at the major surfaces of the optical element. The rays are then redirected by further reflection from another of the partially reflective surfaces to exit the optical element along the viewing direction.Type: ApplicationFiled: September 23, 2018Publication date: August 6, 2020Inventors: Yochay DANZIGER, Naamah LEVIN, Elad SHARLIN, Alexander CHAYET
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Publication number: 20200209667Abstract: A system for uniform optical illumination of an image light provider in a smaller (compact) configuration than conventional implementations includes a lightguide having: a first external surface and a second external surface mutually parallel, and a first sequence of facets, at least a portion of which are: a plurality of parallel, partially reflecting, and polarization selective surfaces, at an oblique angle relative to the first and second external surfaces, and between the first and second external surfaces, and a front-lit reflective polarization rotating image modulator: deployed to spatially modulate light coupled-out from the first external surface, outputting reflected light corresponding to an image, and deployed such that the reflected light traverses the lightguide from the first external surface via the first sequence of facets to the second external surface.Type: ApplicationFiled: July 19, 2018Publication date: July 2, 2020Inventors: Elad SHARLIN, Yochay DANZIGER
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Publication number: 20190377187Abstract: An optical system and method are presented for use in a near-eye display device for projecting a virtual image. The optical system comprises: an optical unit defining a light guiding channel for guiding input light indicative of the virtual image through said channel and providing output light with a field of view, said output light having a predetermined non-uniform intensity profile across said field of view; and a masking optical element optically coupled to an output of said optical unit for output light passage through the masking optical element, said masking optical element having a spatially varying transmission profile across said element configured in accordance with said predetermined non-uniform intensity profile, to affect regions of relatively high light intensity within said intensity profile to thereby apply intensity modulation to light passing through the masking optical element to provide virtual image with improved light intensity uniformity.Type: ApplicationFiled: January 3, 2018Publication date: December 12, 2019Inventors: Yuval RUBIN, Elad SHARLIN
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Publication number: 20140090976Abstract: A radiation conversion device is presented comprising at least one radiation conversion cell. The radiation conversion cell comprises a photo-absorber unit having a predetermined absorption spectrum for absorbing radiation of a certain wavelength range thereby converting the absorbed radiation into charge carriers, and at least partially reflective layer structure configured to be substantially reflective for said certain wavelength range.Type: ApplicationFiled: May 10, 2012Publication date: April 3, 2014Applicant: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.Inventors: Avner Rotschild, Hen Dotan, Ofer Kfir, Elad Sharlin