A light-emitting element (10) includes: a light-emitting part (30) including a light-emitting region; a first optical path control unit (71) which has positive optical power and to which light emitted from the light-emitting region enters; a second optical path control unit (72) which has positive optical power and to which light exited from the first optical path control unit (71) enters; and a bonding member (35) interposed between the first optical path control unit (71) and the second optical path control unit (72), in which an optical axis (LN.sub.1) of the first optical path control unit (71) is displaced from an optical axis (LN.sub.2) of the second optical path control unit (72).

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 lens includes an optical portion; and a rib portion extending to an external side of the optical portion in a radial direction and including a light transmitting region and a light-shielding region, wherein the light-shielding region includes an ester-based compound and a hydrocarbon-based compound, and wherein the hydrocarbon-based compound includes a saturated hydrocarbon compound.

A lens includes an optical portion; and a rib portion extending to an external side of the optical portion in a radial direction and including a light transmitting region and a light-shielding region, wherein the light-shielding region includes an ester-based compound and a hydrocarbon-based compound, and wherein the hydrocarbon-based compound includes a saturated hydrocarbon compound.

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.

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.

An imaging device includes a photoelectric converter and a microlens. The microlens is provided above the photoelectric conversion layer. In a cross-section of the imaging device, an upper surface of the microlens forms a contour line in which a first curve projecting upward is connected to a second curve projecting downward at a first inflection point located between the first curve and the second curve. In this cross-section, a curvature radius of the second curve at a lower end of the second curve is larger than a distance in a thickness direction of the microlens from an upper end of the first curve to the first inflection point.

An image sensor includes imaging pixels and a patterned liquid crystal polarizer (LCP). The imaging pixel include subpixels. The patterned LCP is disposed over the subpixels and configured to direct a particular polarized portion of imaging light to particular subpixels.

A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and, depending on whether glare control is not needed, the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening and if lessening glare is needed, also on the TIR outer reflective surface. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness.