A TOF depth sensing module and image generation method are provided. The TOF depth sensing module includes a light source, a polarization filter, a beam shaper, a first optical element, a second optical element, a receiving unit and a control unit. The light source is configured to generate a beam. The polarization filter is configured to obtain a beam. The beam shaper is configured to obtain a first beam whose FOV meets a first preset range. The control unit is configured to obtain an emergent beam. The control unit is further configured to control the second optical element to deflect, to the receiving unit, a reflected beam obtained by reflecting the emergent beam. In the method, a spatial resolution of a finally obtained depth image of the target object can be improved.

To ascertain an image of an object which emerges when the object is illuminated with illumination light from a partly coherent light source with a target illumination setting having an illumination-side numerical aperture NA_illu and an imaging-side numerical aperture NA_detection, the following procedure is performed: initially, a section of the object is illuminated with illumination light from a coherent measurement light source with an illumination setting having an illumination-side numerical aperture NA_i, which is at least as large as NA_detection. Then, a diffraction image of the illuminated section is recorded. This is implemented by way of a spatially resolved detection in a far field detection plane of a diffraction intensity of illumination light diffracted by the illuminated section with a recording-side numerical aperture NA by way of a plurality of sensor pixels. This recording-side aperture must be greater than or equal to the maximum of NA_illu and NA_detection. From the recorded diffraction image data, the image of the section of the object for the target illumination setting is then ascertained from the recorded diffraction image data. An apparatus for carrying out the method comprises a measurement light source for providing the illumination light and a spatially resolving detector, arranged in the detection plane, for recording the diffraction image. This yields a method and an apparatus by means of which a flexible image ascertainment of sections of the object is facilitated, in particular for different target illumination settings.

The invention relates to a laser beam device for generating an effective laser beam and an illuminating laser beam, having a coupling element for coupling the illuminating laser beam into a beam path of the effective laser beam. The laser beam device is characterized in that the coupling element has a first sub-region and a second sub-region that is different from the first sub-region, and the effective laser beam, the illuminating laser beam and the coupling element are arranged relative to one another such that the effective laser beam is directed onto the first sub-region and the illuminating laser beam is directed onto the second sub-region, the first sub-region being transparent to the effective laser beam and the second sub-region being designed to reflect the illuminating laser beam in parallel with the effective laser beam.

A method of operating an AR system to display an image viewable by a user's eyes includes tracking, by an eye-tracking subsystem, a position of the user's eyes and determining, based on the position, a focus depth of the user's eyes. The method also includes selecting, from a plurality of light-guiding optical elements, a subset of light-guiding optical elements configured to focus light at a depth plane corresponding to the focus depth of the user's eyes, producing a plurality of light beams using a subset of sub-light sources of a plurality of sub-light sources, the subset of sub-light sources being configured to illuminate the subset of light-guiding optical elements, and imaging the plurality of light beams through an imaging system and onto the subset of light-guiding optical elements such that the image is generated at the depth plane corresponding to the focus depth of the user's eyes.

An optical assembly includes a light source for providing a beam of light, a lens system configured to expand and collimate the beam of light, and a configurable beam injector, wherein the beam injector contains a first grid plate and a second grid plate to block individual beams of light. The first grid plate and the second grid plate may be configured such that each grid plate respectively corresponds to particular MEMS mirrors. The grid plates can be configured to have pathways that allow for beams of light to be passed through and other pathways which are blocked to prevent the passage of light. The first grid plate and second grid plate may thus block or allow for transmission of beams of lights to those particular MEMS mirrors. The second grid plate can be configured to be easily swappable during or removable to allow for a different set of beams of light, corresponding to a different set of MEMS mirrors, to be blocked. The second grid plate can be configured to be rotated or slid linearly within a housing.

The present invention is related to a thermal laser evaporation system (10), the thermal laser evaporation system (10) comprising: a laser light source (30) for providing a thermal laser beam (34) for evaporating one or more materials (22) from a source (20); a thermal laser beam shaping system (40) comprising a collimation lens (42) and a focusing lens (44) for directing the thermal laser beam (34) onto the source (20); a vacuum chamber (12); a vacuum window (14) for conducting the thermal laser beam (34) into the vacuum chamber (12); and an aperture (16) arranged within the vacuum chamber (12) between the vacuum window (14) and the source (20).

Further, the present invention is related to a method of providing a thermal laser beam (34) at a source (20) in order to evaporate one or more materials (22) from the source (20); the method comprising the steps of: providing a thermal laser beam (34); directing the thermal laser beam (34) via a thermal laser beam shaping system (40) comprising a collimation lens (42), a shaping device (60) and a focusing lens (44) into a vacuum chamber (12) comprising a vacuum window (12) for conducting the thermal laser beam (34) into the vacuum chamber (12) and through an aperture (16) arranged within the vacuum chamber (12) at the source (20).

The present disclosure provides a dynamic framing system for shaping a light beam. The framing system comprises a first shutter system comprising a first blade and a second blade, a second shutter system comprising a third blade and a fourth blade, and a blade divider forming an aperture. The first shutter system and the second shutter system are arranged on opposite sides of the blade divider. Each blade constitutes an intermediate bar in a five-bar linkage between two sets of outer bars, each set comprising a motorized bar and a passive bar. At least one of the motorized bars has a length being larger than a diameter of the aperture.

A light irradiation device includes a Gaussian beam output unit for outputting light having a light intensity distribution that conforms to a Gaussian distribution, a spatial light modulator for receiving the light and modulating the light by presenting a CGH, an optical system for converging the modulated light, and an amplitude mask arranged on at least one of an optical axis between the Gaussian beam output unit and the spatial light modulator and an optical axis between the spatial light modulator and the optical system. The amplitude mask has a circular-shaped first region centered on the optical axis and an annular-shaped second region that surrounds the first region. Transmittance in the second region continuously decreases as a distance from the optical axis increases.

Light from an array of laser light sources are spread to cover the modulating face of a DMD or other modulator. The spread may be performed, for example, by a varying curvature array of lenslets, each laser light directed at one of the lenslets. Light from neighboring and/or nearby light sources overlap at a modulator. The lasers are energized at different energy/brightness levels causing the light illuminating the modulator to itself be modulated (locally dimmed). The modulator then further modulates the locally dimmed lights to produce a desired image. A projector according to the invention may utilize, for example, a single modulator sequentially illuminated or separate primary color modulators simultaneously illuminated.

Embodiments of the disclosure include a receiver of an optical sensing system. The receiver may include a mask configured to resonate during a scanning procedure performed by the optical sensing system. The receiver may also include a photodetector array positioned on a first side of the mask. The photodetector array may be configured to detect light that passes through the mask during the scanning procedure to generate a frame. The receiver may further include a light collector array aligned with the photodetector array and configured to concentrate the light that passes through the mask during the scanning procedure before directing the light to the photodetector array.