The present invention belongs to the field of laser technology, particularly relates to a semiconductor laser, including a substrate, and lasers, fast axis collimation components, slow axis collimation components, steering compression optical systems, a polarization beam combination prism, a focusing lens and an optical fiber provided on the substrate, wherein the lasers can be arranged in two rows or one row. And lasers of the same row are all located in a same plane. Each laser is sequentially provided with a fast axis collimation component and a slow axis collimation component in the direction of an optical path. The lasers of the same row correspond to a group of steering compression optical systems used to steer and compress the light beams collimated by the fast axis collimation components and the slow axis collimation components. The polarization beam combination prism is used for combining two beams of lasers having been steered and compressed by two groups of the steering compression optical systems. And the laser combined by the polarization beam combination prism is coupled into the optical fiber by the focusing lens. The present invention has a compact structure and a simple optical path, effectively reduces the thickness of the substrate and improves the thermal dissipation capacity of the laser, so that the efficiency and reliability of the laser are improved.

An optical system for directing first and second laser pulses along an optical axis to a target to generate extreme ultraviolet radiation from said target. The optical system comprises a first optical component configured to redistribute a first laser pulse to form a shaped laser pulse having a hollow region. The optical system comprise a second optical component configured to focus the shaped laser pulse toward the target. The optical system comprises a third optical component configured to focus a second laser pulse toward the target within the hollow region of the shaped laser pulse. The first, second and third optical components are coaxially arranged on the optical axis.

An optical arrangement for disinfection in apparatuses operating with air or a liquid comprises at least one radiation source or at least one group of radiation sources, which emits or jointly emit radiation in the ultraviolet wavelength range, at least one beam collecting optical unit, which collects the radiation emitted by the radiation source or the group of radiation sources, a number of beam delivering optical units, each configured to receive the radiation collected by the at least one beam collecting optical unit, and also a number of effect zones spatially separated from one another, into which the radiation delivered via the beam delivering optical units is emitted in order to bring about a disinfecting effect.

An LED-based illumination system includes a layered optical sheet-form structure and a light source. The sheet-form structure comprises a first optically transmissive sheet with parallel channels formed in its first major surface. Each channel has a triangular cross-section with opposing planar walls configured for total internal reflection. A second optically transmissive sheet is bonded to the first sheet's surface using an optically transmissive adhesive, at least partially encapsulating the channels. An optically transmissive light diffusing sheet is provided as part of the sheet-form structure. The second sheet's outer surface has light deflecting microstructures. The light source comprises multiple LEDs configured to illuminate the layered structure at incidence angles from 0 to at least 75 degrees. The layered optical sheet-form structure may include additional features such as perpendicular channel arrays or specularly reflective side walls.

Provided is a daylighting device (10) including a daylighting member (11) that has a base having light transparency, a plurality of daylighting portions that are provided on one surface of the base and have light transparency, and gap portions provided between the plurality of daylighting portions; and a light diffusion member (12) that is arranged on a light output surface side of the daylighting member (11) and diffuses light output from the daylighting member (11).

An extreme ultraviolet generation device, including a chamber with an internal space; a plasma generator to generate plasma in the internal space; a condenser in the internal space to gather light generated from the plasma; and a monitor to monitor the internal space in an omnidirectional manner.

Embodiments described herein may relate to a system comprising a plurality of optical elements, comprising at least a first optical element and one or more secondary optical elements, a heliostat comprising the first optical element, where the heliostat is operable to move the first optical element to continuously reflect light from a non-stationary light source in a beam towards a first of the secondary optical elements, and where the secondary optical elements are arranged to re-direct the reflected beam of light towards an illumination target. The system further includes a controller configured to receive position data indicative of the position of the non-stationary light source over time, and in response to the position data, control at least the heliostat to continuously direct the beam of light towards the first of the secondary optical elements, such that the beam of light is continuously re-directed towards the illumination target.

A light-emitting table suitable for use in metrology includes a plurality of light sources and a field to be illuminated. Light-emitting centers of the light sources represent starting points of light source axes which perpendicularly intersect the field to be illuminated. The light-emitting centers of the light sources on one side and the field to be illuminated on the other side delimit an intermediate space in the interior of the light-emitting table. Located between the light source axes within the intermediate space are curved and mirrored surfaces, the focal points or caustics (K) of which are located within the intermediate space between the curved and mirrored surfaces and the field to be illuminated. A coordinate measuring machine for capturing the coordinates of a workpiece includes at least one optical sensor and a light-emitting table for illuminating the workpiece during measurement of the coordinates of the workpiece using the sensor.

An optical article for illuminating building interiors including a reflective grid and a light diffusing element positioned between the reflective grid and a light source. The reflective grid includes one or more arrays of transverse reflective surfaces and is configured to partially transmit and partially redirect incident light over a broad angular range.

An analysis and observation device includes: an electromagnetic wave emitter that emits a primary electromagnetic wave; a reflective object lens having a primary mirror provided with a primary reflection surface reflecting a secondary electromagnetic wave and a secondary mirror provided with a secondary reflection surface receiving and further reflecting the secondary electromagnetic wave; first and second detectors that receive the secondary electromagnetic wave and generate an intensity distribution spectrum; and a controller that performs component analysis of a sample based on the intensity distribution spectrum. A transmissive region through which the primary electromagnetic wave is transmitted is provided at a center of the secondary mirror. The transmissive region transmits the primary electromagnetic wave, which has been emitted from the electromagnetic wave emitter and passed through an opening of the primary mirror, thereby emitting the primary electromagnetic wave along an analysis optical axis of the reflective object lens.