An optical unit for a laser processing system includes a laser diode including a plurality of laser emitters which emit laser light, a lens unit including a plurality of lenses, a holding block having a light-transmitting property, and a light-shielding film. The holding block and the laser diode are bonded to each other with a first adhesive, and the lens unit and the holding block are bonded to each other with a second adhesive. The light-shielding film is located between the lens unit and the holding block.

Wide-angle optical functionality is beneficial for imaging and image projection devices. Conventionally, wide-angle operation is attained by a complicated assembly of optical elements. Recent advances have led to meta-surface lenses or meta-lenses, which are ultra-thin planar lenses with nanoantennas that control the phase, amplitude, and/or polarization of light. Here, we present a meta-lens capable of diffraction-limited focusing and imaging over an unprecedented >170° angular field of view (FOV). The lens is integrated on a one-piece flat substrate and includes an aperture on one side and a single meta-surface on the other side. The meta-surface corrects third-order Seidel aberrations, including coma, astigmatism, and field curvature. The meta-lens has a planar focal plane, which enables considerably simplified system architectures for imaging and projection. The meta-lens design is generic and can be readily adapted to different meta-atom geometries and wavelength ranges to meet diverse application demands.

Provided is an imaging device including a sensing array including a plurality of sensing elements, an imaging lens array including a plurality of imaging optical lenses, each of the plurality of imaging optical lenses having a non-circular cross-section perpendicular to an optical axis, and configured to transmit light received from an outside of the imaging device, and a condensing lens array including a plurality of condensing lenses disposed between the imaging lens array and the sensing array, and configured to transmit the light passing through the imaging lens array to the sensing elements, wherein a number of the plurality of imaging optical lenses is less than a number of the plurality of condensing lenses.

Wide-angle optical functionality is beneficial for imaging and image projection devices. Conventionally, wide-angle operation is attained by a complicated assembly of optical elements. Recent advances have led to meta-surface lenses or meta-lenses, which are ultra-thin planar lenses with nanoantennas that control the phase, amplitude, and/or polarization of light. Here, we present a meta-lens capable of diffraction-limited focusing and imaging over an unprecedented >170 angular field of view (FOV). The lens is integrated on a one-piece flat substrate and includes an aperture on one side and a single meta-surface on the other side. The meta-surface corrects third-order Seidel aberrations, including coma, astigmatism, and field curvature. The meta-lens has a planar focal plane, which enables considerably simplified system architectures for imaging and projection. The meta-lens design is generic and can be readily adapted to different meta-atom geometries and wavelength ranges to meet diverse application demands.

The invention provides a lighting module (100) which comprises a plurality of first light sources (101) configured for emitting first light (102) in a first predetermined direction, and at least one second light source (103) configured for emitting second light (104). The lighting module (100) further comprises a light guide (105) which comprises at least one light in-coupling portion (106) to couple at least part of the second light (104) into the light guide (105), and a plurality of light out-coupling portions (107) to couple at least part of the second light (104) out of the light guide (105). The light guide (105) is arranged to guide the second light (104) coupled into the light guide (105) at the at least one light in-coupling portion (106) via total internal reflection (108) to the plurality of light out-coupling portions (107) for generating out-coupled light in a second predetermined direction. The light guide (105) is mechanically coupled to and extends along the plurality of first light sources (101). The light out-coupling portions (107) cover a larger first area (109) than a second area (110) covered by the plurality of first light sources (101). A total luminous flux generated by the at least one second light source (103) is lower than a total luminous flux generated by the plurality of the first light sources (101). The first predetermined direction and the second predetermined direction at least partly overlap.

Wide-angle optical functionality is beneficial for imaging and image projection devices. Conventionally, wide-angle operation is attained by a complicated assembly of optical elements. Recent advances have led to meta-surface lenses or meta-lenses, which are ultra-thin planar lenses with nanoantennas that control the phase, amplitude, and/or polarization of light. Here, we present a meta-lens capable of diffraction-limited focusing and imaging over an unprecedented >170 angular field of view (FOV). The lens is integrated on a one-piece flat substrate and includes an aperture on one side and a single meta-surface on the other side. The meta-surface corrects third-order Seidel aberrations, including coma, astigmatism, and field curvature. The meta-lens has a planar focal plane, which enables considerably simplified system architectures for imaging and projection. The meta-lens design is generic and can be readily adapted to different meta-atom geometries and wavelength ranges to meet diverse application demands.

A lighting apparatus comprising a single point-like light source, preferably a LED, and a transmissive lens structure optically connected to said light source defining a plurality of optically functional, mutually different segments dedicated for controlling the light, e.g. distribution and direction, originally emitted by said single light source. A corresponding transmissive element is presented.

A head-mounted display (HMD) includes an electronic display element, a microlens array, and an optics block. The electronic display element outputs image light via sub-pixels having different colors, the sub-pixels separated from each other by a dark space region. The sub-pixels have associated emission distributions that describe ranges of angles of light emitted from the plurality of sub-pixels. The microlens array includes microlenses that are each coupled to at least one corresponding sub-pixel, of the sub-pixels, where the microlenses concentrate the emission distributions and direct the emission distributions toward a target region. The optics block, which is located in the target region optically corrects the image light and directs the optically corrected image light from the microlens array to an exit pupil of the HMD corresponding to a location of an eye of a user of the HMD.

A case, for an electronic device such as a mobile phone, containing an insert located near a camera, still image recorder, or video recorder and a flash of the device is disclosed. The placement, material, color, and properties of the insert helps reduce and/or eliminate problems associated with the case affecting the resultant flash/light from the camera causing and adding erroneous colors, effects, and information on the resulting pictures, images, sensors, or videos.

A case, for an electronic device such as a mobile phone, containing an insert located near a camera, still image recorder, or video recorder and a flash of the device is disclosed. The placement, material, color, and properties of the insert helps reduce and/or eliminate problems associated with the case affecting the resultant flash/light from the camera causing and adding erroneous colors, effects, and information on the resulting pictures, images, sensors, or videos.