An actuator device, a projection device including the actuator device, and a projection method applicable to the actuator device, are provided. The actuator device includes a base, a frame, an optical element, and at least one driving assembly. The projection method includes the following steps. The frame is disposed in the base, the optical element is disposed in the frame, and the at least one driving assembly is disposed between the base and the frame. The at least one driving assembly is controlled to drive the frame through a first signal, so that the optical element swings reciprocally relative to the base based on a first swing angle, a second swing angle, and a third swing angle of a first actuating shaft.

A laser projection device, including at least one reflector unit having at least one reflector element that is configured to deflect at least one laser beam to be projected, and having at least one drive unit that is configured to excite at least the reflector element into resonant vibration. The laser projection device includes at least one temperature compensation unit, which is configured to acquire a vibrational frequency of at least the reflector element and to ascertain the temperature of the reflector unit from it.

A light detection and ranging system includes at least one laser that emits a laser beam. A beam steering device steers beams emitted by the laser at a desired angle. A curved mirror reflects the steered beams at any desired angle or direction. A method of providing a light detection and ranging system is also provided.

A light detection and ranging system includes synchronously scanning transmit and receive mirrors that scan a pulsed fanned laser beam in two dimensions. Imaging optics image a receive aperture onto an arrayed receiver that includes a plurality of light sensitive devices. Scanning mirror assemblies include stationary permanent magnets and MEMS devices with attached mirrors and conductive coils.

The present disclosure relates to systems, methods, and vehicles that facilitate a light detection and ranging (LIDAR or lidar) system that may take advantage of “dead angles” where the lidar system is oriented toward support structure or another “uninteresting” feature. In such scenarios, light pulses may be redirected toward more-interesting features in the environment. An example system includes a lidar system configured to emit light pulses into an environment of the system so as to provide information indicative of objects within a default field of view. The system also includes a reflective surface optically coupled to the lidar system. The reflective surface is configured to reflect at least a portion of the emitted light pulses so as to provide an extended field of view. The lidar system is further configured to provide information indicative of objects within the extended field of view.

Provided is a beam steering apparatus including a driving pixel unit including a plurality of driving pixels that are respectively configured to supply a voltage or a current, a light modulator including a plurality of pixels corresponding to the plurality of driving pixels, each pixel of the plurality of pixels being configured to modulate incident light, and a wiring layer including a wiring structure configured to electrically connect the plurality of driving pixels to the plurality of pixels, wherein the wiring structure includes a first conductive wire connected to the plurality of driving pixels, a second conductive wire connected to the plurality of pixels, and at least one third conductive wire connected between the first conductive wire and the second conductive wire, and wherein the first conductive wire, the second conductive wire, and the at least one third conductive wire form a step structure.

There is provided a system and a method of testing an optical device in a scanner for scanning a semiconductor specimen, the method comprising controlling, by a processor and memory circuitry (PMC) operatively connected to the scanner, an optical element optically connected to the optical device to deviate an optical path of light transmitted by the optical device so to transmit towards an imaging sensor, thereby enabling acquiring, by the imaging sensor, image data informative of the optical device, wherein in a scanning mode the optical element enables light transmitting from the optical device towards another optical device comprised in the scanner, and processing the acquired image data to obtain results informative of operability of the optical device.

A method of processing by controlling one or more beam characteristics of an optical beam may include: launching the optical beam into a first length of fiber having a first refractive-index profile (RIP); coupling the optical beam from the first length of fiber into a second length of fiber having a second RIP and one or more confinement regions; modifying the one or more beam characteristics of the optical beam in the first length of fiber, in the second length of fiber, or in the first and second lengths of fiber; confining the modified one or more beam characteristics of the optical beam within the one or more confinement regions of the second length of fiber; and/or generating an output beam, having the modified one or more beam characteristics of the optical beam, from the second length of fiber. The first RIP may differ from the second RIP.

An electromagnetic radiation system for directing an electromagnetic radiation beam (11) at a target (28) having a first arrangement (12) in which the radiation beam (11) is directed along a marking beam path that is within a marking range of the electromagnetic radiation system and a second arrangement (12, 15) in which the radiation beam (27) is directed along a different beam path (27) that is not within the marking range of the electromagnetic radiation system, wherein a positional relationship between the marking beam path (11) and the different beam path (27) satisfies a predetermined condition at the target (28) when the electromagnetic radiation system is at a predetermined distance (29) from the target (28).

A mirror unit includes a mirror device includes a support portion and a movable mirror portion configured to be movable with respect to the support portion, and a package including a light incident opening and accommodating and holding the mirror device such that light incident from the light incident opening is able to be incident on the movable mirror portion. The package is provided with a ventilation port communicating an inside and an outside of the package.