An optical scanning device includes an optical mode converter to change, in accordance with a change in wavelength of a light output from a light source or phase of the light output from the light source, a radiation direction of the light, and an actuator to rotate the optical mode converter about each of two shafts orthogonal to each other.

A wearable display device includes a light source, a beam scanner, a pupil-replicating lightguide, and a detector. The light source is configured to emit an image beam and a ranging beam. The beam scanner co-scans both beams. The image beam is used to form an image in angular domain for displaying to a user of the wearable display device, and a ranging beam is used to scan outside environment at the same time. Light reflected from objects in the outside environment is detected by the detector, and a 3D map of the outside environment is built using time-of-flight measurements of the reflected signal and/or triangulation. For triangulation measurements, the detector may include a digital camera.

A system includes an initiating optics layer interposed between an electromagnetic (EM) source and a lenslet steering layer, where the lenslet steering layer includes a first positive lens element and a second negative lens element. The lenslet steering layer is interposed between the initiating optics layer and a concluding optics layer. The system includes a steering controller configured to steer an EM beam from the EM source by controlling a first relative rotation between the first positive lens element and the second negative lens element, and further by controlling a second absolute rotation of the lenslet steering layer. The system includes a rotating actuator responsive to rotation commands from the steering controller, where the rotating actuator selectively rotates the first positive lens element and/or the second negative lens element.

The present invention relates to a stereo eye tracking technique. The eye tracking device comprises a processing unit configured and operable for receiving at least one image being indicative of a user's eye; identifying in the image a first data being indicative of pupil's parameters; receiving a second data being indicative of an alternative eye tracking, wherein the second data is more accurate than the first data; and correlating between the first and second data and determining a three-dimensional position and gaze direction of the user's eye.

The image display apparatus includes a light attenuation section that reflects a portion of light emitted from a light source and a scanning section that scans the light reflected by the light attenuation section. The light attenuation section transmits a portion of light emitted from the light source. The light attenuation section has reflectance and transmittance and the reflectance is smaller than the transmittance. The image display apparatus further includes a light receiving element on which the light transmitted through the light attenuation section is incident. The image display apparatus also includes a control section that controls activation of the light source in accordance with detection results of the light receiving element.

A method of pose calculation for a portable three-dimensional scanning device including a first sensor and a second sensor the method including utilizing data from the first sensor and data from the second sensor to acquire data defining six degrees of freedom of the scanning device to optimize a first pose calculation, receiving data comprising one of data from the first sensor and data from the second sensor, selecting a subset of the six degrees of freedom of the scanning device, utilizing the data from the first sensor and the received data for the selected subset of six degrees of freedom to optimize a second pose, wherein the unselected degrees of freedom are retained from the first pose and storing received data associated with the second camera pose in a point cloud database.

A Light Detection and Ranging (LiDAR) module for a vehicle can include a semiconductor integrated circuit with a microelectromechanical system (MEMS) and a substrate, the MEMS comprising a micro-mirror assembly including a mirror and a gimbal structure. The gimbal can be configured concentrically around and coplanar with the mirror. When rotated, the gimbal drives the mirror to oscillate at or near a resonant frequency and is coupled to the mirror via mirror-gimbal connectors. A support structure can be coupled to a backside of the mirror and gimbal structures and can increase the stiffness of the mirror to help the mirror better resist dynamic deformation. To limit the added rotational moment of inertia, the support structure can be etched to form a matrix of cells (e.g., formed by a mesh of circumferential and radial ridges) such that up to approximately 90% of the support structure material forming the support structure is removed.

A projection exposure device projects exposure light onto a substrate via a microlens array. The projection exposure device includes a scanning exposure unit that moves the microlens array along a scanning direction from one end toward another end of the substrate, and a microlens array shift unit that moves the microlens array in a shift direction intersecting with the scanning direction during movement of the microlens array caused by the scanning exposure unit.

The present invention relates to a head device of a three-dimensional modelling equipment, and a modelling plane scanning method using the same, the head device of a three-dimensional modelling equipment comprising: a modelling light source array having a plurality of modelling light sources; a light guide part, installed at a given position above a modelling plane, having a function of reflecting modelling rays from the modelling light source array so as to be incident on the modelling plane; and a controller for controlling the operations of the modelling light source array and the light guide part in a conjoined manner, wherein a plurality of modelling rays generated from the plurality of modelling light sources are irradiated while forming one line scan having a first axial direction on the modelling plane, and the light guide part continuously or intermittently moves the one line scan on the modelling plane to irradiate the modelling light rays across the modelling plane. The present invention has the effects of enabling high-speed scanning to be performed, and modelling precision to be enhanced through precise scanning control.

To provide an optical module and a scan-type image projection display device at low power consumption in a configuration of enhancing a heat radiation property with excellent assembly performance. An optical module for coupling and irradiating laser beams from a plurality of laser diodes, and onto a desired position is characterized in that a first protruded part corresponding to a first laser holder for holding a first laser diode 1a and a second protruded part corresponding to a second laser holder for holding a second laser diode are provided on a base for placing the optical module thereon, and heat conductive materials are provided between the first protruded part and the first laser holder and between the second protruded part and the second laser holder, respectively.