A biometric imaging device characterized by comprising: an image sensor comprising a plurality of pixels forming a photodetector pixel array; a first aperture layer comprising openings in locations aligned with pixels of the pixel array; a first filter layer comprising a transparent material configured to block light within a predetermined first wavelength range; a transparent spacer layer arranged on the first filter layer, wherein the transparent spacer layer is configured to absorb light within a predetermined second wavelength range; and an array of microlenses arranged on the transparent spacer layer, wherein the microlenses are aligned with the openings in the aperture layer.

A display device including a display to generate a real image, and an optical system. The optical system includes a plurality of lenslets, each having one cluster of object pixels, where the assignation of object pixels to clusters may change periodically in time intervals. Each lenslet produces a ray pencil from each object pixel of its cluster which has waists laying close to a waist surface. The ray pencils are projected towards an eye position. The ray pencils are configured to generate a partial virtual image from the real image of its corresponding cluster. At least two of the lenslets cannot be made to coincide by a simple translation rigid motion. Foveal rays are a subset of rays emanating from the lenslets.

Provided is an image sensor including a light sensing element, a planarization layer disposed on the light sensing element, a color filter array layer disposed on the planarization layer, the color filter array layer including color filters, and a microlens disposed on the color filter array layer, wherein the color filters include a green filter, a blue filter and a red filter, and wherein a refractive index of the green filter is greater than 1.7 for a green light wavelength range of 500 nm to 570 nm.

An image sensor includes a first photoelectric conversion unit that converts light incident through a first opening to an electric charge, a second photoelectric conversion unit that converts light incident through a second opening which is smaller than the first opening to an electric charge, and a signal output wiring that outputs a first signal generated by the electric charge converted by the first photoelectric conversion unit and a second signal generated by the electric charge converted by the second photoelectric conversion unit. The second photoelectric conversion unit is disposed between the second opening and the signal output wiring.

In a general aspect, a wearable display system includes a microlens array projector including a plurality of elemental microlens relays (EMRs). Each EMR of the plurality of EMRs includes a microLED microdisplay including a plurality of pixels, and is configured to generate a subset of light associated with an image. Each EMR also includes a microlens configured to receive the subset of light from the microdisplay. The system also includes a lightguide, an incoupling element optically coupled with the lightguide, and an outcoupling element optically coupled with the lightguide. The microlens is configured to relay the subset of light to the incoupling element. The incoupling element is configured to incouple the subset of light into the lightguide. The outcoupling element is configured to outcouple portions of the subset of light at a plurality of respective locations along the lightguide, where outcoupled light of the plurality of EMRs represents the image.

A structure includes: a near infrared transmitting filter that shields light in a visible range and allows transmission of at least a part of light in a near infrared range; and a member that is provided on an optical path of the near infrared transmitting filter on at least one of an incidence side into the near infrared transmitting filter or an emission side from the near infrared transmitting filter, allows transmission of light in a near infrared range, and has a refractive index of 1.7 or higher for the light in the near infrared range.

Micro light-emitting diode display driver architectures and pixel structures are described. In an example, a driver circuit for a micro light emitting diode device includes a current mirror. A linearized transconductance amplifier is coupled to the current mirror. The linearized transconductance amplifier is to generate a pulse amplitude modulated current that is provided to a set of micro LEDs connected in parallel to provide fault tolerance architecture.

Systems and techniques are provided for meta-lens cameras. For example, an apparatus can include a first substrate including a first aperture and a second substrate including a first meta-lens. The first substrate and the second substrate are mechanically coupled such that at least a first portion of the first aperture is disposed over at least a second portion of the first meta-lens.

The present disclosure relates to the technical field of display, and discloses a lens grating, including a substrate and at least two lenses arranged at any side of the substrate, where a light-shading structure is arranged corresponding to a junction region between adjacent lenses in the at least two lenses. light emitted towards the lens grating is shaded by at least one light-shading structure formed in the junction region between the adjacent lenses in the at least two lenses of the substrate, thereby solving a problem of wrong light projection position of subpixels caused by a distortion region formed by an irregular cross-sectional structure in the junction region between the adjacent lenses of the lens grating, and reducing or eliminating crosstalk of images for left and right eyes. The present disclosure further discloses a manufacturing method of the lens grating.

Disclosed is an image sensor including: a center pixel group including 2x2 pixels having different colors in a center area of a 6x6 unit pixel group; and first to fourth color pixel groups having the same color as one pixel of the center pixel group, disposed as units of 2x4 pixels or 4x2 pixels to have a shape surrounding the center pixel group, and having different colors.