A display system is disclosed including an emitter system assembly for providing a light output. The emitter system assembly includes a first emitter that provides a first emission spectrum, a cavity at least partially surrounding the first emitter, a first aperture configured for transmitting therethrough at least a portion of the first emission spectrum from the first emitter, and a shaping element in optical communication with the first aperture. The cavity includes reflectors that reflect the first emission spectrum within the cavity and toward the aperture.

A semiconductor light emitter includes a substrate, a semiconductor multilayer structure including a light emission unit that emits light in an oblique direction with respect to the substrate in an emission region in a longitudinal direction and a lateral direction orthogonal to the longitudinal direction, and a shaping optical system that shapes a luminous flux emitted from the light emission unit, in which a lens closest to the light emission unit in the shaping optical system is a cylindrical lens having positive power in the lateral direction, a front major plane of the cylindrical lens is parallel to the light emission unit and a generatrix direction of the cylindrical lens is parallel to the longitudinal direction, and the following conditional equation (1) is satisfied in a case where a distance from the light emission unit to a light incident surface of the cylindrical lens is D, a distance from the light incident surface to the front major plane of the cylindrical lens is HA, and a focal length of the cylindrical lens is f,

D<f−HA  (1).

A light source system and a light-emitting device are provided. The light source system includes an array of light-emitting diodes, the light-emitting diodes including light-emitting diode chips; a collimating lens group located on a light path of light emitted by the array of the light-emitting diodes, the collimating lens group being configured to collimate light beams emitted by the light-emitting diode chips; and a fly-eye lens arranged on a light path of light outputted from the collimating lens group. The fly-eye lens includes micro lens units corresponding to the light-emitting diode chips, and for at least one light-emitting diode chip of the light-emitting diode chips, an image formed by each of at least one light-emitting diode chip on surfaces of the micro lens units is completely within a surface of one of the micro lens units. A ratio of side lobes is reduced, thereby improving the energy utilization rate.

A laser projection module is provided. The laser projection module includes a substrate assembly, a lens barrel assembly, a light source, a diffractive optical element and a collimation element. The lens barrel assembly includes a lens barrel and a stop member connected to the lens barrel. The lens barrel is disposed on the substrate assembly and configured to define a receiving cavity together with the substrate assembly. The light source is disposed on the substrate assembly, accommodated in the receiving cavity, and configured to emit laser to the receiving cavity. The diffractive optical element and the collimation element are accommodated in the receiving cavity. The light source, the collimation element and the diffractive optical element are sequentially disposed in an optical path of the light source. The stop member is configured to prevent the diffractive optical element from moving in a light-emitting direction of the laser projection module.

A lens unit includes a positive lens element provided with a convex surface on an incident surface and/or an exit surface; and a lens frame supporting the lens element and being provided with a projection that projects in an inner radial direction from inside the lens frame. The lens frame supports the lens element with the projection fixedly fitted into an outer peripheral portion of the lens element. The projection is provided, on an inner peripheral portion thereof, with a first surface positioned on an incident side in an optical axis direction, a second surface positioned on an exit side in the optical axis direction, and a third surface positioned between the first surface and the second surface. The first, second and third surfaces are tapered surfaces that are respectively inclined relative to the optical axis direction. A method of manufacturing the lens unit is also provided.

A lighting module for a vehicle includes a light source and a lens including an input dioptre oriented towards the light source and an output dioptre. The output dioptre includes at least one section through a horizontal plane having two convex portions separated by a concave portion, viewed from a side opposite the light source. The input dioptre includes a section through a vertical median plane having a lower convex portion and an upper concave portion, viewed from a side opposite the light source.

Apparatus include a plurality of laser diodes configured to emit respective laser diode beams having perpendicular fast and slow beam divergence axes mutually perpendicular to respective beam axes, and beam shaping optics configured to receive the laser diode beams and to circularize an ensemble image space and NA space of the laser diode beams at an ensemble coupling plane. In selected examples, beam shaping optics include variable fast axis telescopes configured to provide variable fast axis magnification and beam displacement.

A levelling laser for generating a laser projection line on a surface is disclosed. The levelling laser includes an optical projection lens with a three-dimensional lens surface. The projection lens can be described in a three-dimensional coordinates system having three axes, X, Y and Z, arranged orthogonally to one another. The Z-axis coincides with the optical axis of the projection lens. The lens surface of the projection lens has a shape with a surface inclination angle rising monotonically along the X-axis. A corresponding projection lens is also disclosed.

A lens housing, a lens module and a light source system are disclosed. The lens housing includes a lens holder, a leans barrel, and a fixed pressing plate. The lens holder includes an accommodating cavity having an internal thread. The lens barrel is provided with a receiving cavity along an axial direction and includes an adjustment structure along a circumferential direction. An outer circumferential wall of the lens barrel is provided with an external thread matching the internal thread. The lens barrel is embedded in the accommodating cavity of the lens holder and is in threaded connection with the lens holder. The fixed pressing plate is fixed to one side of the lens barrel away from the lens holder and is capable of moving axially relative to the lens holder.

A lighting device is described. The lighting device includes at least one first arrangement of light emitting elements and at least one second arrangement of light emitting elements spatially separated from the at least one first arrangement of light emitting elements. The lighting device also includes at least one first magnifying optical element arranged in correspondence with the at least one first arrangement of light emitting elements and at least one second magnifying optical element arranged in correspondence with the at least one second arrangement of light emitting elements. At least one optical projection element is arranged and configured to generate a combined image of a magnified image of the at least one first arrangement of light emitting elements and a magnified image of the at least one second arrangement of light emitting elements.