Sharp Kabushiki Kaisha Corporation

Peter John Roberts

David James Montgomery

Koji Takahashi

Katsuji Iguchi

Hidenori Kawanishi

Noriaki Fujii

Nathan Cole

Emma Jayne Walton

Paul Antony Gass

Shin Itoh

Kengo Yamasawa

Lesley Ann Parry-Jones

An image display device includes a drive circuit substrate, micro LED elements, and a wavelength conversion layer that converts excitation light emitted from the micro LED elements and that emits converted long-wavelength light to a side opposite to the drive circuit substrate, the micro LED elements and the wavelength conversion layer being sequentially stacked on the drive circuit substrate. The micro LED elements include a first multilayer film that reflects the long-wavelength light converted by the wavelength conversion layer.

Image display device

A light-emitting structure includes a substrate, a sub-pixel stack over a surface of the substrate, and a bank including a first bank portion and a second bank portion. The sub-pixel stack has an emissive stack including an emissive layer between a first transport layer and a second transport layer, a first electrode layer coupled to the first transport layer, and a second electrode layer coupled to the second transport layer. The second bank portion is between the first bank portion and the sub-pixel stack, and the bank surrounding at least the emissive stack and the first electrode layer forms an interior space above the sub-pixel stack.

Dual bank structure for improved extraction from an emissive layer

[Object] To provide a technology in flash LiDAR applicable to a wide incidence-angle range. [Solution] An optical radar device () includes a light emitting unit () that diffusively radiates a laser beam, an arrayed light receiving unit () that receives the laser beam emitted from the light emitting unit () and reflected off an object whose range is to be determined (), the arrayed light receiving unit () including light receiving elements arrayed two-dimensionally, and a telecentric lens () disposed between the object whose range is to be determined and the light receiving element.

Optical radar device

[Object] To provide (i) a two-lens optical system, (ii) a beam combining module, (iii) a projector, and (iv) a method for assembling a two-lens optical system each of which allows for an improved lens positioning sensitivity [Means to Attain the Object] A two-lens optical system () includes a first lens () for use in collimation adjustment, the first lens being configured to move along only an optical axis of light emitted from a light source; and a second lens () for use in beam steering, the second lens being configured to move along only two axes perpendicular to the optical axis.

Two-lens optical system, beam combining module, projector, and method for assembling two-lens optical system

A light-emitting structure includes a substrate, a sub-pixel stack, a cover layer over the sub-pixel stack, and at least one interface between the substrate and the cover layer. The at least one interface has an interface roughness. The sub-pixel stack includes an emissive layer between a first transport layer and a second transport layer, a first electrode layer coupled to the first transport layer, and a second electrode layer coupled to the second transport layer. The sub-pixel stack is over the substrate and configured to emit light including a scattering component caused by the interface roughness and a cavity component separate from the scattering component. A ratio of a luminance of the scattering component to a luminance of the cavity component increases with a viewing angle relative to a display normal. An optical power of the scattering component is a fraction of an optical power of the cavity component.

Layered light-emitting structure with roughened interface

An embodiment of the present invention enables an improvement in image resolution. A projection device () includes: a light source (); a MEMS mirror () which reflects and two-dimensionally scans the laser beam emitted from the light source; and a free-form lens () which changes focusing properties of the laser beam reflected by the scanning section such that, after propagation of the laser beam to a screen () onto which the image is to be projected, a shape of the laser beam when viewed on the screen has a first width that is shorter than a second width of the shape, the first width being along a horizontal direction corresponding to a primary scanning direction in which the MEMS mirror scans the laser beam, the second width being along a vertical direction.

Projection device

An illumination system comprises a lightguide () having a plurality of light extraction features (LEFs); and a plurality of independently controllable light sources (). The LEFs have a preferred direction, with light that is incident on an LEF along the preferred direction of the LEF being extracted from the lightguide generally parallel to a reference plane, and light that is incident on an LEF not along the preferred direction of the LEF being extracted from the lightguide at an extraction angle to the reference plane, the extraction angle being related by a response function to an incidence angle between the light propagation direction and the preferred direction of LEF. The shape of the LEFs varies with distance from a reference point or respective reference point so that the response function becomes larger with increasing distance of the LEFs from the reference point.

Light steering backlight

A phosphor-based multi-colored display is provided which includes a spatial light modulator comprising an addressable array of apertures each corresponding to a respective sub-pixel in the display; an array of phosphor regions each indexed to a corresponding aperture of the spatial light modulator; and a backlight which provides quasi-monochromatic light to phosphor within each of the phosphor regions. The phosphor within each of the phosphor regions, upon being excited by the quasi-monochromatic light of the backlight, emits light having a color different from a color of the quasi-monochromatic light, through the corresponding aperture of the spatial light modulator.

Growing community of inventors

Oxford, United Kingdom

Peter John Roberts