Display performance can be improved by reducing light leak in an oblique direction at the time of black display while increasing front brightness. Provided is a backlight unit including: a light collimating member in which a lens array is formed on one surface of a transparent substrate and a plurality of truncated cones are arranged on another surface of the transparent substrate; a light guide plate; and a light source, in which the truncated cone on the light collimating member has a shape in which a width decreases away from the transparent substrate in a height direction, a position of each of lenses of the lens array deviates from a position of the truncated cone corresponding to the lens to move away from the light source in a direction that connects a center of the lens and the light source most adjacent to the lens, an optical axis of the lens is arranged to pass through a slope of the truncated cone corresponding to the lens, the light guide plate and a surface of the truncated cone opposite to the transparent substrate are in contact with each other, and the shape of the truncated cone of the light collimating member satisfies specific expressions.

A laser apparatus includes a plurality of laser modules each generating a laser line in a working plane. The laser modules are juxtaposed so that the laser lines generated by the modules combine into a single laser line. Each of the laser modules includes at least one laser line generator. The laser line generator includes two linear arrays of strips of laser diodes each emitting a focused laser beam. The two linear arrays are arranged parallel to each other so that the strips are staggered. The two sets of parallel laser beams generated by the two linear arrays of strips, respectively, are merged into a single laser line by a set of mirrors. The linear arrays of strips of laser diodes and the mirrors are arranged so that the two sets of laser beams trace optical paths of the same length before being merged into a single laser line.

A light-emitting device includes: a substrate including a base and a side wall; a plurality of semiconductor laser elements disposed in a row direction and in a column direction on an upper surface of the base; a plurality of pairs of wires that penetrate the side wall in the row direction; and a lens array fixed to the substrate, the lens array comprising a plurality of lens sections disposed in the row direction and in the column direction above the plurality of semiconductor laser elements. Each laser beam that is emitted from the semiconductor laser elements and is incident on a light incident surface of the lens array has a beam shape with a greater width in the column direction than in the row direction.

A vehicle light includes a lighting unit with multiple light-emitting elements (LEEs), one or more couplers, a light guide and an extractor. The lighting unit has a curved elongate extension. Each of the couplers has an input aperture coupled with one or more of the LEEs and an exit aperture coupled with a first edge of the light guide and is configured to couple light from the LEEs into the light guide. The light guide is configured to propagate light via total internal reflection to a second edge of the light guide. The extractor has an input aperture coupled with the second edge of the light guide and an exit aperture configured to emit light into an ambient environment.

A device for shaping laser radiation (2), with a first array (7) of optical elements for deflecting and/or imaging and/or collimating the laser radiation (2), the first array (7) having a plurality of optical elements arranged side by side in a first direction (X), and a second array (8) of optical elements for deflecting and/or imaging and/or collimating the laser radiation (2), the second array (8) having a plurality of optical elements arranged side by side in the second direction (Y), wherein the optical elements of at least one of the arrays (7, 8) are mirror elements (9, 10).

Beam compressors include separated surfaces having positive and negative optical powers. A surface spacing is selected so that a collimated beam input to the beam compressor is output as a collimated beam. In some examples, beam compressors are situated to compress a laser beam stack that includes beams associated with a plurality of laser diodes. Beam compression ratios are typically selected so that a compressed beam stack focused into an optical waveguide has a numerical aperture corresponding to the numerical aperture of the optical waveguide.

A device includes an illumination device for emitting an illumination beam. The illumination device includes an emitter array including multiple light emitters; and a micro-lens array (MLA) including multiple micro-lenses. The MLA is positioned to receive light emitted from the emitter array. Light from the MLA forms the illumination beam. A first region of the MLA is offset from the emitter array by a first offset amount, and a second region of the MLA is offset from the emitter array by a second offset amount different than the first offset amount.

Imaging apparatus includes an illumination assembly, including a plurality of radiation sources and projection optics, which are configured to project radiation from the radiation sources onto different, respective regions of a scene. An imaging assembly includes an image sensor and objective optics configured to form an optical image of the scene on the image sensor, which includes an array of sensor elements arranged in multiple groups, which are triggered by a rolling shutter to capture the radiation from the scene in successive, respective exposure periods from different, respective areas of the scene so as to form an electronic image of the scene. A controller is coupled to actuate the radiation sources sequentially in a pulsed mode so that the illumination assembly illuminates the different, respective areas of the scene in synchronization with the rolling shutter.

A light source measurement apparatus includes an objective lens that collects light emitted from a light source having a plurality of light emission points, a first reflection attenuation filter, a second reflection attenuation filter, a condensing lens, a space filter, and a movable stage, in which the first reflection attenuation filter and the second reflection attenuation filter are disposed such that polarization directions are orthogonal to each other, in which the space filter has an opening through which light emitted from a measurement target light emission point among the plurality of light emission points is transmitted, and in which the opening has a shape in which a dimension of the measurement target light emission point in a fast direction is larger than a dimension of the measurement target light emission point in a slow direction.

A projector includes a light source unit group having light source units arranged in matrix, a mirror group arranged in a traveling direction of light beams emitted from the unit group, the mirror group including reflective mirrors that reflect, with reflective parts, the beams emitted from the unit group while each of the reflective mirrors narrows interval between the beams in a first direction, the mirrors being arranged stepwise so as to narrow interval between the beams in a second direction, and a cylindrical lens arranged in traveling directions of beams reflected by the mirrors, the lens causing the reflected beams reflected by the mirrors and traveling in the traveling directions different from each other to be parallel, the reflective parts being arranged to be bent in steps in the second direction so that the beams to be reflected in the second direction are close to each other.