One embodiment provides a method, including: producing, using one or more optical engines of an augmented reality display, an augmented reality scene; determining, using at least one sensor, a location of a gaze of the user on the augmented reality display; identifying, based upon the location of the gaze, at least one object a user is viewing; and adjusting, based upon identification of the at least one object, luminance within the augmented reality scene. Other aspects are described and claimed.

A structured light projector includes a light source configured to emit light, a structured light pattern mask configured to receive the light emitted by the light source and including a first region configured to generate a first structured light having a first polarization and a second region configured to generate a second structured light having a second polarization that is different from the first polarization, and a polarization multiplexing deflector configured to deflect the first structured light and the second structured light generated by the structured light pattern mask, to different directions, respectively.

Optical element (1) comprising a sealed volume (15), a first window (11), a second window (12) and a membrane (13), wherein the membrane (13) encloses the sealed volume (15) in lateral directions and the membrane (13) encloses the sealed volume (15) in directions perpendicular to lateral directions, or the first window (11) and the second window (12) enclose the sealed volume (15) in directions perpendicular to lateral directions, wherein the sealed volume (15) is deformable by tilting the first window (11) with respect to the second window (12), wherein the first window (11) and the second window (12) being spaced apart by a solid structure (14), and the solid structure (14) is arranged to guide a motion of the first window (11) with respect to the second window (12), so that a pressure in the sealed volume (15) is constant.

A light source apparatus can avoid double-counting of particles in a flow cytometer for measuring and analyzing a plurality of particles flowing in a flow cell. A light source apparatus for a flow cytometer includes a semiconductor laser for emitting a laser beam, a collimating lens for collimating the laser beam emitted from the semiconductor laser in a spread light state, a first beam conversion unit composed of prisms and a second beam conversion unit composed of prisms for matching a flow cell length direction with a slow axis direction of the collimated laser beam in a flow cell after reducing the beam diameter in a fast axis direction and increasing the beam diameter in the slow axis direction, and a focusing lens for focusing the laser beam passed through these beam conversion units in the flow cell.

An optical system is provided. The optical system includes a first optical module with a first light-entering hole, a second optical module with a second light-entering hole, and a third optical module with a third light-entering hole. The second light-entering hole is close to the first light-entering hole and the third light-entering hole. The focal length of the second optical module is different from the focal length of the first optical module and the focal length of the third optical module.

In various embodiments, one or more prisms are utilized in a wavelength beam combining laser system to regulate beam size and/or to provide narrower wavelength bandwidth.

An optical device, its use, and a method for interference structuring of a sample. A laser emits a laser beam that is split into at least two partial beams by a beam splitter. A first cylindrical lens and a second cylindrical lens for refracting the partial beams into an interference area are arranged in the beam path. The partial beams interfere in such a way that a structure having linear structure elements may be formed in a structural region of the sample. The cylinder axis of the first cylindrical lens is aligned parallel to the cylinder axis of the second cylindrical lens.

In an embodiment, an augmented reality display provides an expanded eye box and enlarged field of view through the use of holographic optical elements. In at least one example, an incoupling element directs an image into a waveguide, which transmits the image to a set of outcoupling gratings. In one example, a set of holographic optical elements opposite the outcoupling elements reflect the image to the user with an enlarged field of view while maintaining an expanded eye box.

Control instructions are transmitted to receivers by modulating light sources to generate light beams that are modulated with digital data streams for inducing control instructions in the light beams. Each light beam is applied to a pixel shaper element of a pixel shaper assembly to produce a light pixel, each light pixel carrying the control instructions of the light beam, each light pixel having a perimeter defined by the pixel shaper element. The pixel shaper assembly combines the light pixels into an image without significant overlap or voids between the light pixels emitted by the pixel shaper assembly. The light pixels are directed toward a projector lens for transmission toward the receivers. In a receiver, an optical receiver detects a light pixel. A controller decodes the control instructions received in the detected light pixel and uses the control instructions to control a function of the receiver.

Methodology of forming a substantially flat-top illuminating light beam, from a beam at the laser output having a conventionally non-uniform distribution of irradiance, with the use of only a birefringent prismatic element and light-focusing optics. Preferably, the cross-sectional area of such illuminating light distribution is shaped to be elongated or even substantially rectangular to have it used advantageously in various metrological situations such as, for example, the operation of a moving particle analyzer.