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公开(公告)号：US11567331B2
公开(公告)日：2023-01-31
申请号：US17683507
申请日：2022-03-01
Applicant: Lumus Ltd.
Inventor： Yuval Rubin , Elad Sharlin
Abstract: 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,φ) of the optical system across a lateral dimension x of the exit pupil and an angular 20 span φ of the FOV. The control unit (20) modifies the image data which is to be input in the optical system by applying thereto intensity modulation based on a correction intensity map that at least partially compensates intensity non-uniformity in the intensity transfer function map I1(x,φ) of the optical system, such that the light output at the exit pupil of the optical system and indicative of the image, has a modulated intensity map which is observed by the viewer with improved intensity uniformity.
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公开(公告)号：US11561335B2
公开(公告)日：2023-01-24
申请号：US17768983
申请日：2020-12-03
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Elad Sharlin
Abstract: A transparent substrate has two parallel faces and guides collimated image light by internal reflection. A first set of internal surfaces is deployed within the substrate oblique to the parallel faces. A second set of internal surfaces is deployed within the substrate parallel to, interleaved and in overlapping relation with the first set of internal surfaces. Each of the internal surfaces of the first set includes a first coating having a first reflection characteristic to be at least partially reflective to at least a first subset of components of incident light. Each of the internal surfaces of the second set includes a second coating having a second reflection characteristic complementary to the first reflection characteristic to be at least partially reflective to at least a second subset of components of incident light. The sets of internal surfaces cooperate to reflect all components of light from the first and second subsets.
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公开(公告)号：US11262587B2
公开(公告)日：2022-03-01
申请号：US17044418
申请日：2019-05-22
Applicant: Lumus Ltd.
Inventor： Yuval Rubin , Elad Sharlin
Abstract: 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,φ) of the optical system across a lateral dimension x of the exit pupil and an angular 20 span φ of the FOV. The control unit (20) modifies the image data which is to be input in the optical system by applying thereto intensity modulation based on a correction intensity map that at least partially compensates intensity non-uniformity in the intensity transfer function map I1(x,φ) of the optical system, such that the light output at the exit pupil of the optical system and indicative of the image, has a modulated intensity map which is observed by the viewer with improved intensity uniformity.
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公开(公告)号：US11221294B2
公开(公告)日：2022-01-11
申请号：US17043842
申请日：2019-04-07
Applicant: Lumus Ltd.
Inventor： Chaim Aldaag , Tzofia Lavi , Dror Hermoni , Jonathan Gelberg , Yosef Lavian , Netanel Goldstein , Elad Sharlin , Elad Lavi , Kobi Greenstein , Amir Shapira , Mordechai Gilo , Tsion Eisenfeld
Abstract: 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.
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