The present disclosure describes optoelectronic modules that include an optical system tilted with respect to a focal plane. For example, an optoelectronic module can includes an optical system including a vertical alignment feature. An optoelectronic sub-assembly includes an active optoelectronic device, wherein the vertical alignment rests on a surface of the optoelectronic sub-assembly and wherein an optical axis of the optical system is tilted with respect to a focal plane in the sub-assembly.

A light irradiation device includes: a light source configured to output light having coherence; a light focusing element having a focusing axis and a non-focusing axis intersecting with the focusing axis and configured to focus the light on a focusing line so as to generate planar light; and an aperture mask having an opening part that limits a part of luminous fluxes of the light transmitted from the light source to the light focusing element. The opening part of the aperture mask has opening edges disposed to extend in a direction along the focusing axis of the light focusing element, and, in a case in which the opening edges are projected onto the focusing line, corresponding projected portions have linear spreads.

Embodiments of the disclosure provide a micro shutter array, an optical sensing system, and an optical sensing method. The optical sensing system includes a laser emitter configured to sequentially emit a series of laser beams and a steering device configured to direct the series of laser beams in different directions towards an environment surrounding the optical sensing system. The optical sensing system further includes a receiver configured to receive the series of laser beams at a plurality of time points returning from the environment. The receiver includes a micro shutter array configured to sequentially open a portion of the micro shutter array at a specified location at each time point, to allow the corresponding laser beam to pass through the micro shutter array at that time point and to reflect the ambient light by a remaining portion of the micro shutter array at that time point. The receiver further includes an image sensor configured to receive the ambient light reflected by the remaining portion of the micro shutter array.

A laser beam generating device which includes a housing. A laser light generator is disposed in the housing and is operable to generate two output beams which project outside of the housing. The laser light generator includes a light source and a leveling mechanism on which the laser light generator is disposed. A mounting member is disposed on the housing and is configured to mount the laser beam generating device on a screw thread. The mounting member is movable relative to the housing between a first position and a second position.

Provided is a projection device that comprises a projection optical system for projecting periodic pattern light onto an object, the projection device having an aperture stop that is placed on a pupil plane of the projection optical system, wherein conditional expressions L.sub.1/L.sub.2>S.sub.1/S.sub.2 and L.sub.1>S.sub.1 are satisfied, where L.sub.1 represents a dimension of the periodic pattern light in a periodic direction and L.sub.2 represents a dimension in a direction vertical to the periodic direction, for an image intensity distribution of a light source, which is formed in the pupil plane by light emitted from the light source, and S.sub.1 represents a dimension in the periodic direction of the periodic pattern light and S.sub.2 represents a dimension in the direction vertical to the periodic direction, for an opening of the aperture stop.

A three-dimensional printing approach based on stereolithography with variable printing resolutions to solve the trade-off between throughput and resolution. In this technology, the variable fabrication resolutions are achieved by switching light wavelength. The apparatus includes an optical filter based on high-contrast gratings. In one embodiment, the minimum printing resolution of the accordingly constructed stereolithography apparatus is reduced to 37 μm.

Embodiments of the disclosure provide a receiver of an optical sensing system, and an optical sensing method. The receiver includes a micro shutter array configured to sequentially receive a series of laser beams returned from an environment at a plurality of time points. The micro shutter array sequentially opens a portion of the micro shutter array at a specified location at each time point, to allow a respective laser beam to pass through the micro shutter array at that time point and to reflect the ambient light by a remaining portion of the micro shutter array at that time point. The receiver further includes a photodetector configured to detect the laser beam that passes through the micro shutter array at each time point to obtain point cloud data and an image sensor configured to receive the ambient light reflected by the remaining portion of the micro shutter array to obtain image data. The receiver also includes a controller configured to fuse the point cloud data obtained from the photodetector with the image data obtained from the image sensor.

Embodiments of the disclosure provide a micro shutter array, and an optical signal filtering method. The micro shutter array is used for filtering a series of optical signals at a plurality of time points. The optical signal at each time point includes a laser beam. The micro shutter array includes a plurality of micro shutter elements arranged in an array and a driver. The driver is configured to sequentially open a subset of the micro shutter elements at a specified location at each time point to allow a respective laser beam to pass through the micro shutter array at that time point.

Embodiments are disclosed of a lighting apparatus including a fixture adapted to accommodate a camera having imaging optics that define an optical axis, wherein the fixture includes an open end through which the imaging optics can capture an image. One or more side-emitting illumination light sources are positioned adjacent to the open end, the plurality of side-emitting light sources positioned to direct light toward a plane intersected by the optical axis. Other embodiments are disclosed and claimed.

A texture image acquiring device, a display device and a collimator are disclosed. The texture image acquiring device includes a collimator and an image sensor. The collimator includes a lens array, a first diaphragm layer, and a second diaphragm layer. The lens array allows light rays to be converged and incident on the first diaphragm layer. The first diaphragm layer allows light rays incident on the first diaphragm layer to pass through and be incident on the second diaphragm layer, and restricts an angle of light rays capable of passing through the first diaphragm layer. The second diaphragm layer allows light rays incident on the second diaphragm layer to pass through, and restricts an angle of light rays capable of passing through the second diaphragm layer. The image sensor senses light rays incident on the image sensor for acquiring a texture image.