G02B2027/0121

STANDARDIZED WEDGE PROFILE IN GLASS LAMINATE FOR GHOST REDUCTION

A heads-up display includes a windshield (10) with a standardized wedge profile and an embedded reflective polarizer (20) for p-polarised light and a display (40). The reflective polarizer is disposed between, and spaced apart from, opposing outermost first and second major glass surfaces (11, 12) of the windshield. The heads-up display forms a virtual image for viewing by the eye of a passenger. An image emitted by the display may include a first image ray emitted from a predetermined region of the display and incident on the outermost first major glass surface of the windshield at an angle of incidence greater than about 60 degrees, with at least 90% of the incident first emitted image ray polarized in a plane of incidence of the first emitted image ray. A heads-up display includes windshield (10) with a standardized wedge profile and an embedded reflective polarizer (20) for p-polarised light and a display (40). The reflective polarizer is disposed between, and spaced apart from, opposing outermost first and second major glass surfaces (11, 12) of the windshield. The heads-up display forms a virtual image for viewing by the eye of a passenger. An image emitted by the display may include a first image ray emitted from a predetermined region of the display and incident on the outermost first major glass surface of the windshield at an angle of incidence greater than about 60 degrees, with at least 90% of the incident first emitted image ray polarized in a plane of incidence of the first emitted image ray.

OPTICAL ASSEMBLY AND METHOD FOR REDUCING ZERO-ORDER LIGHT IN A HOLOGRAPHIC DISPLAY
20220326655 · 2022-10-13 ·

An optical assembly is provided for use in holographic display of a replay image. The optical assembly may be of particular use is an augmented reality headset. The optical assembly includes a light-modulation element arranged to be illuminated off-axis by a light beam. The light-modulation element modulates the incident light to generate a replay image and generates a zero-order light beam. A focusing system is arranged after the light-modulation element. A light remover is positioned after the focussing system and is configured to remove the zero-order light beam from the light focussed by the focussing system. The focussing system is configured to focus zero-order light from the light-modulation element in a first plane different from a second plane which is the plane of focus of parallel light of the replay image. The light remover removes the zero-order light in the first plane.

DIFFRACTIVE OPTICAL ELEMENT (DOE) ON AN IMAGING SENSOR TO REDUCE AND MINIMIZE FLARE

An imaging sensor assembly to reduce flare and ghost effects and enhance sharpness in a head-mounted device (HMD) is provided. The imaging sensor assembly may include a diffractive optical element (DOE). The imaging sensor assembly may also include a sensor substrate under the diffractive optical element (DOE). In some examples, the sensor substrate may include a plurality of color filters, and a plurality of photodiodes to detect optical illumination that passes through the diffractive optical element (DOE) to create one or more images.

Attachable image display device and ocular optical system
11630305 · 2023-04-18 · ·

An ocular optical system includes a light guiding prism that guides image light from a display element and an emission portion that emits the image light guided by the light guiding prism. The light guiding prism includes a plurality of sides arranged to surround a light path of the image light, and a reflection surface off which the image light is reflected to the emission portion. The plurality of sides include a first side that is arranged on an opposite side of a first plane including first and second optical axes and that is situated between the emission portion and the reflection surface, wherein the first optical axis is a portion of the image light before the image light is reflected off the reflection surface, and the second optical axis is a portion of the image light after the image light is reflected off the reflection surface.

Display devices and methods of making the same

A display device includes a display panel having a first emission region and a second emission region that surrounds the first emission region. The display device includes a first plurality of light emitters arranged in the first emission region, a plurality of activation lines for the first emission region, a second plurality of light emitters arranged in the second emission region, and a plurality of activation lines for the second emission region. A single activation line of the plurality of activation lines for the first emission region is electrically coupled with a first number of light emitters in the first emission region and a single activation line of the plurality of activation lines for the second emission region is electrically coupled with a second number, distinct from the first number, of light emitters in the second emission region.

FRESNEL LENSES WITH REDUCED OPTICAL ARTIFACTS

A system includes a light outputting device configured to output a divergent light. The system also includes a lens configured to convert the divergent light incident thereon from a first side of the lens to a collimated light substantially covering a light receiving region located at a second side of the lens, the lens including a plurality of Fresnel structures formed on at least one of a first lens surface or a second lens surface of the lens. Each Fresnel structure includes a slope facet and a draft facet. At least one of the draft facets is a first type of draft facet configured to not interact with a ray of the divergent light that is non-parallel with the at least one of the draft facets.

Near-eye optical system
11644673 · 2023-05-09 · ·

A near-eye optical system receiving an image beam including a first optical waveguide is provided. The first optical waveguide expands the image beam in a first direction and includes first and second surfaces, first and second beam-splitting surfaces, and a plurality of first and second reflective inclined surfaces. The first and second beam-splitting surfaces are located in the first optical waveguide and disposed in a tilted manner relative to the first and second surfaces. The first and second beam-splitting surfaces have opposite tilt directions. The first and second beam-splitting surfaces receive an image beam incident from the first surface so that a first portion of the image beam passes through and a second portion of the image beam is reflected. The near-eye optical system further reduces a thickness of the optical waveguide and alleviates the issue that the image beam is not completely projected to the optical waveguide.

Scanning display system in head-mounted display for virtual reality

Methods, systems, and computer programs are presented for the presentation of images in a head-mounted display (HMD). One HMD includes a screen, a processor, inertial sensors, a motion tracker module, and a display adjuster module. The motion tracker tracks motion of the HMD based on inertial data from the inertial sensors, and the display adjuster produces modified display data for an image frame to be scanned to the screen if the motion of the HMD is greater than a threshold amount of motion. The display data includes pixel values to be scanned to rows in sequential order, and the modified display data includes adjusted pixel values for pixels in a current pixel row of the image frame to compensate for the distance traveled by the HMD during a time elapsed between scanning a first pixel row of the image frame and scanning the current pixel row of the image frame.

LAMINATED GLASS

Provided is a laminated glass capable of suppressing multiple images. The laminated glass according to the present invention has one end, and the other end being at the opposite side of the one end and having a thickness larger than a thickness of the one end, and includes a first lamination glass member, a second lamination glass member, and an interlayer film arranged between the first lamination glass member and the second lamination glass member, and the interlayer film has a wedge angle of 0.10 mrad or more and 2.0 mrad or less, and the laminated glass has wedge angle of larger than the wedge angle of the interlayer film.

HEAD MOUNTED DISPLAY DEVICE
20220357573 · 2022-11-10 ·

A head mounted display device is provided. The head mounted display device includes a left eye display unit which displays an image for a left eye and is disposed along a trajectory of a left eye ellipse having a first eccentricity, and a left eye lens which faces the left eye display unit and refracts the image for the left eye in a direction of a user's left eye.