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公开(公告)号：US20210405365A1
公开(公告)日：2021-12-30
申请号：US17195402
申请日：2021-03-08
Applicant: DigiLens Inc. , Rockwell Collins, Inc.
Inventor： Milan Momcilo Popovich , Jonathan David Waldern , Alastair John Grant
Abstract: An image generation device comprises: a spatial light modulator; a source of light; a beam deflector; an illumination waveguide and an image transport waveguide, each waveguide containing at least one switchable grating; and a coupler for directing scanned light into a first set of TIR paths in said illumination waveguide. A switchable grating in the illumination waveguide diffracts light onto said SLM, a switchable grating in said image transport waveguide diffracting image-modulated from the SLM into a waveguide path.
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公开(公告)号：US20210349328A1
公开(公告)日：2021-11-11
申请号：US17214362
申请日：2021-03-26
Applicant: Digilens Inc.
Inventor： Milan Momcilo Popovich , Jonathan David Waldern , Alastair John Grant
Abstract: There is provided an illumination device comprising: a laser; a waveguide comprising at least first and second transparent lamina; a first grating device for coupling light from the laser into a TIR path in the waveguide; a second grating device for coupling light from the TIR path out of the waveguide; and a third grating device for applying a variation of at least one of beam deflection, phase retardation or polarization rotation across the wavefronts of the TIR light. The first second and third grating devices are each sandwiched by transparent lamina.
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公开(公告)号：US20210255463A1
公开(公告)日：2021-08-19
申请号：US17144000
申请日：2021-01-07
Applicant: DigiLens Inc.
Inventor： Milan Momcilo Popovich , Jonathan David Waldern , Alastair John Grant
Abstract: A waveguide display is provided comprising: an input image generator providing image light projected over a field of view; a waveguide having first and second external surfaces; and at least one grating optically coupled to the waveguide for extracting light towards a viewer. The waveguide has a lateral refractive index variation between said external surfaces that prevents any ray propagated within the waveguide from optically interacting with at least one of the external surfaces.
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公开(公告)号：US20210247620A1
公开(公告)日：2021-08-12
申请号：US17107398
申请日：2020-11-30
Applicant: DigiLens Inc.
Inventor： Milan Momcilo Popovich , Jonathan David Waldern
IPC: G02B27/48 , G02B5/02 , G02B5/32 , G02F1/1334 , G02F1/1333 , G02F1/29 , F21V8/00 , G02B27/28 , G03B21/00 , G03B21/20
Abstract: A device for reducing laser speckle using a micro scanner and a holographic diffuser. The micro scanner includes a first transparent optical substrate with an input surface and an output surface and a second transparent optical substrate with an input surface and an output surface and a variable refractive index medium sandwiched between the output surface of the first substrate and the input surface of the second substrate. Transparent electrodes are applied to the output surface of the first substrate and the input surface of the second substrate. The electrodes are coupled to a voltage generator. The input surface of the first substrate is optically coupled to a laser source. The input surface of the second substrate is configured as an array of prismatic elements. At least one of the input surface of the first substrate or the output surfaces of the second substrate is planar.
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公开(公告)号：US20210239984A1
公开(公告)日：2021-08-05
申请号：US17118285
申请日：2020-12-10
Applicant: DigiLens Inc.
Inventor： Milan Momcilo Popovich , Jonathan David Waldern , Alastair John Grant
Abstract: An optical display comprises: a first waveguide comprising a first surface and a second surface, an input coupler, a fold grating, and an output grating. The input coupler receives collimated first wavelength light from an Input Image Node causes the light to travel within the first waveguide via total internal reflection between the first surface and the second surface to the fold grating. The fold grating provides pupil expansion in a first direction directs the light to the output grating via total internal reflection between the first surface and the second surface. The output grating provides pupil expansion in a second direction different than the first direction and causes the light to exit the first waveguide from the first surface or the second surface. At least one of the input coupler, fold grating and output grating is a rolled k-vector grating, and the fold grating is a dual interaction grating.
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Patent Agency Ranking
公开(公告)号：US10942430B2
公开(公告)日：2021-03-09
申请号：US16162280
申请日：2018-10-16
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Alastair John Grant , Milan Momcilo Popovich
Abstract: Systems integrating display resolution-multiplication solutions can be implemented in a variety of different ways. In many embodiments, the system includes an image projector for projecting image light, an image processor for computing a native image and at least one image shifted in a predefined direction, and at least one switchable grating capable of being switched between diffracting and non-diffracting states. In some embodiments, the switchable grating is optically coupled to the image projector. In a number of embodiments, the switchable gratings have a first configuration for propagating the native image light and at least one other configuration for propagating shifted image light having an angular displacement corresponding to the image shift in a predefined direction. By displaying the native and shifted images sequentially within a human eye integration period, the display resolution can be multiplied.
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公开(公告)号：US10914950B2
公开(公告)日：2021-02-09
申请号：US16242979
申请日：2019-01-08
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Milan Momcilo Popovich , Alastair John Grant
Abstract: Systems and methods for generating head-up displays (HUDs) using waveguides incorporating Bragg gratings in accordance with various embodiments of the invention are provided. The term HUD is typically utilized to describe a class of displays that incorporates a transparent display that presents data without requiring users to look away from their usual viewpoints. HUDs can be incorporated in any of a variety of applications including (but not limited to) vehicular and near-eye applications, such as googles, eyewear, etc. HUDs that utilize planar waveguides that incorporate Bragg gratings in accordance with various embodiments of the invention can achieve significantly larger fields of view and have lower volumetric requirements than HUDs implemented using conventional optical components.
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公开(公告)号：US20210026297A1
公开(公告)日：2021-01-28
申请号：US16936198
申请日：2020-07-22
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Alastair John Grant , Milan Momcilo Popovich , Ratson Morad
Abstract: Systems and methods for recording holographic gratings in accordance with various embodiments of the invention are illustrated. One embodiment includes a holographic recording system including a first movable platform configured to support a first plurality of waveguide cells for exposure, at least one master grating, and at least one laser source configured to provide a set of recording beams by directing light towards the at least one master grating, wherein the first movable platform is translatable in predefined steps along at least one of two orthogonal directions, and wherein at each the predefined step at least one waveguide cell is positioned to be illuminated by at least one recording beam within the set of recording beams.
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公开(公告)号：US20200348531A1
公开(公告)日：2020-11-05
申请号：US16932482
申请日：2020-07-17
Applicant: DigiLens Inc.
Inventor： Milan Momcilo Popovich , Jonathan David Waldern , John James Storey
IPC: G02B27/48 , G03H1/32 , G02F1/1334 , G02F1/13357 , G03B21/20 , G02B5/18 , F21V8/00 , G02B27/42 , G02F1/01 , G02F1/1335 , G02F1/137 , G03H1/02
Abstract: An Electrically Switchable Bragg Grating (ESBG) despeckler device comprising at least one ESBG element recorded in a hPDLC sandwiched between transparent substrates to which transparent conductive coatings have been applied. At least one of said coatings is patterned to provide a two-dimensional array of independently switchable ESBG pixels. Each ESBG pixel has a first unique speckle state under said first applied voltage and a second unique speckle state under said second applied voltage.
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公开(公告)号：US20200341194A1
公开(公告)日：2020-10-29
申请号：US16544732
申请日：2019-08-19
Applicant: DigiLens Inc.
Inventor： Jonathan David Waldern , Alastair John Grant , Milan Momcilo Popovich
Abstract: Systems and methods for holographic waveguide illumination homogenizers in accordance with various embodiments of the invention are illustrated. One embodiment includes an illumination device that includes a laser source emitting light of at least a first wavelength, a light modulator, a dynamic micromirror device for reflecting incident collimated light modulated with image data by said light modulator into directions within a field of view, and at least one waveguide substrate with a first and second total internal reflection surface, each said substrate supporting at least one input grating for coupling light of a first polarization from said laser into a total internal reflection path in said substrate and at least one switchable grating beam splitter for diffracting said first polarization light and receiving light of a second polarization reflected from said dynamic micromirror device and transmitting it through a second surface of the waveguide.
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