An optical sensing system is provided, including a sensing module, a light emitter, and a light receiver. The sensing module has a substrate, an optical waveguide disposed on the substrate, and a sensing membrane disposed on the optical waveguide for carrying a specimen. The light emitter emits a sensing light to the optical waveguide, and the light receiver receives the sensing light that propagates through the optical waveguide.

A laser beam scanning (“LBS”) display device is configured with an optical system that includes a laser beam emitter configured to emit a laser beam. The optical system also includes a driver configured to generate a driving signal for controlling a mirror, such as a microelectromechanical systems (“MEMS”) mirror. The optical system also includes a controller configured to generate a driving signal while rejecting a system disturbance response.

A mixed reality direct retinal projector system that may include a headset that uses a reflective holographic combiner to direct light from a light engine into an eye box corresponding to a user's eye. The light engine may include light sources coupled to projectors that independently project light to the holographic combiner from different projection points. The light sources may be in a unit separate from the headset that may be carried on a user's hip, or otherwise carried or worn separately from the headset. Each projector may include a collimating and focusing element, an active focusing element, and a two-axis scanning mirror to project light from a respective light source to the holographic combiner. The holographic combiner may be recorded with a series of point to point holograms; each projector interacts with multiple holograms to project light onto multiple locations in the eye box.

A microelectromechanical systems (MEMS) scanner having actuator pairs adjacent to sides of a scanning mirror. Actuator pairs include individual actuators that are physically located adjacent to opposite sides of the scanning mirror and that, upon activation, induce angular rotation into the scanning mirror. Torsional beam flexures suspend the scanning mirror from a frame structure and facilitate rotation of the scanning mirror about a rotational axis. During operation of the MEMS scanner, a drive signal may be applied to the actuator pair to cause each individual actuator, of the actuator pair, to deform in unison, thereby generating some degree of tip deflection. Since the torsional beam flexures are connected to the tips of the actuators via the lever arms, this tip deflection serves as actuator stroke that induces torsional deformation into the torsional beam flexure—thereby causing rotation of the scanning mirror about the rotational axis.

A light detection and ranging system can have a photonic integrated circuit coupled to a grating coupler and a scanning array. The scanning array may consist of a mechanical actuator configured to move at least one detector in response to a calibration operation. As a result, coherent downrange detection can be achieved with light modulation, optical mixing, and balanced detection.

A method for scanning solid angles is provided using at least two electromagnetic beams, at least one electromagnetic beam being generated that is subsequently deflected along a horizontal angle and/or along a vertical angle with the aid of a rotatable mirror; the solid angles being scanned using the at least one electromagnetic beam; and at least one reflected electromagnetic beam being received, after being reflected off an object, by a receiving optics that is pivotable along the horizontal angle synchronously with the mirror. Furthermore, a LIDAR device for carrying out the method is provided.

A Lidar system, a mirror assembly for a Lidar system and method of operating the mirror assembly. The mirror assembly of the Lidar system includes a first frame and a first conductor. The first frame is rotatable about a first axis. The first conductor extends along the first frame to one side of the first axis. The first conductor extends through a first magnetic field on the one side of the first axis in a direction parallel to the first axis. A first current is passed through the first conductor to interact with the first magnetic field to induce a first rotation of the first frame about the first axis.

According to an example aspect of the present invention, there is provided a Microelectromechanical System, MEMS, mirror apparatus, comprising a MEMS mirror and at least two piezo actuators, wherein the at least two piezo actuators are connected to each other and configured to control, or controlling, movement of the MEMS mirror and a single supply drive signal connected to each of the at least two piezo actuators.

An image projection system includes a cascaded waveguide system including a first waveguide and a second waveguide arranged downstream along a transmission path from the first waveguide. The first waveguide includes a first output structure and is configured to receive a light beam having a first beam width and output a first expanded light beam at the first output structure, wherein the first expanded light beam has a second beam width greater than the first beam width. The second waveguide includes a second output structure and is configured to receive the first expanded light beam from the first waveguide and output the first expanded light beam multiple times from the second output structure as a plurality of output light beams. Each of the plurality of output light beams is output from a different area of the second output structure along a propagation direction of the second waveguide.

An imaging system can include a first and second camera configured to capture first and second sets of oblique images along first and second scan paths, respectively, on an object area. A drive is coupled to a scanning mirror structure, having at least one mirror surface, and configured to rotate the structure about a scan axis based on a scan angle. The first and second cameras each have an optical axis set at an oblique angle to the scan axis and include a respective lens to focus first and second imaging beams reflected from the mirror surface to an image sensor located in each of the cameras. The first and second imaging beams captured by their respective cameras can vary according to the scan angle. Each of the image sensors captures respective sets of oblique images by sampling the imaging beams at first and second values of the scan angle.