A head-up display device and a transportation device are provided. The head-up display device includes a light source, a scanner configured to scan light emitted from the light source to form scanned light, an angle adjuster configured to change an exit angle of the scanned light, a display unit configured to form an image according to the scanned light from the angle adjuster, and a projection assembly configured to project the image formed on the display component to a selected area.

A laser processing device for forming vias has a galvo mirror module, a first lens, a second lens, a focusing module, and a laser source. The laser source emits a laser beam through the first lens and the second lens to convert the laser beam into an incident ring beam. The galvo mirror module reflects the incident ring beam into a reflected ring beam into the focusing module to convert the reflected ring beam into a Bessel-like beam. The galvo mirror module has a scanning direction and shifts a reflection direction of the reflected ring beam to move an end of the reflected ring beam along the scanning direction. The focusing module has a third lens linearly slid along the scanning direction to reduce variations in shape and laser fluence of the Bessel-like beam focused at different positions.

An image projector includes a spatial light modulator (SLM) with a two dimensional array of pixel elements controllable to modulate a property of light transmitted or reflected by the pixel elements. An illumination arrangement delivers illumination to the SLM. A collimating arrangement collimates illumination from the SLM to generate a collimated image directed to an exit stop. The illumination arrangement is configured to sequentially illuminate regions of the SLM, each corresponding to a multiple pixel elements. A controller synchronously controls the pixel elements and the illumination arrangement so as to project a collimated image with pixel intensities corresponding to a digital image.

A line scanner assembly includes a cam with a cam surface, where the cam rotatable about a cam axis of rotation and includes a first ferromagnetic material. A mirror with a planar surface is configured to tilt about a mirror axis of rotation. A follower is attached to the mirror and has a second ferromagnetic material, where the first magnetic material and/or the second magnetic material includes a permanent magnet and where the follower maintains contact with the cam due to a magnetic attraction between the first ferromagnetic material and the second ferromagnetic material.

Embodiments of the disclosure are drawn to apparatuses and methods for a rotating optical reflector. Optical systems may have a limited field of view, and so in order to expand the area that the optical system collects data from, the field of view of the optical system may be scanned across a target area. The present disclosure is directed to a rotating optical reflector, which includes a transmissive layer which refracts light onto a reflective layer, which has a normal which is not parallel to the axis about which the optical reflector is rotated. The optical reflector may be both statically and dynamically balanced, which may allow an increased size of the optical reflector, which in turn may increase the aperture of an optical system (e.g., a lidar system) using the rotating optical reflector.

Embodiments of the disclosure are drawn to apparatuses and methods for a rotating optical reflector. Optical systems may have a limited field of view, and so in order to expand the area that the optical system collects data from, the field of view of the optical system may be scanned across a target area. The present disclosure is directed to a rotating optical reflector, which includes a transmissive layer which refracts light onto a reflective layer, which has a normal which is not parallel to the axis about which the optical reflector is rotated. The optical reflector may be both statically and dynamically balanced, which may allow an increased size of the optical reflector, which in turn may increase the aperture of an optical system (e.g., a lidar system) using the rotating optical reflector.

An optical apparatus includes a deflector configured to deflect illumination light from a light source to scan an object, and configured to deflect reflected light from the object, a light guide configured to guide the illumination light form the light source to the deflector, and configured to guide the reflected light from the deflector to a light receiving element, an optical member having a reflective area that makes first light which is part of the illumination light from the deflector incident on the deflector by reflection, and a controller configured to obtain information regarding the deflector on the basis of information of the first light from the reflective area. In a cross-section including the optical path from the reflective area to the light guide, a width of the reflective area is smaller than a width of the illumination light on the reflective area.

A wearable heads-up display includes a power source, laser sources, and a lightguide. A photodetector is positioned to detect an intensity of a test light emitted at a perimeter of the lightguide from an optical path within the lightguide. A laser safety circuit provides a control to reduce or shut off a supply of electrical power from the power source to the laser sources in response to an output signal from the photodetector indicating that the detected intensity is below a threshold.

An optical assembly in a laser scanning microscope, having an optical scanning unit providing a first pupil plane, a first beam deflecting device, made of a first scanner arranged on the first pupil plane, for scanning excitation radiation in a first coordinate direction, a first focusing device generating a second pupil plane, optically conjugated to the first pupil plane, and a second beam deflecting device for deflecting the excitation radiation. The second deflecting device is arranged on the second pupil plane. A second focusing device to generate a third pupil plane, is optically conjugated to the first pupil plane and the second pupil plane. A third beam deflecting device is arranged on the third pupil plane, and a variable beam deflecting device is provided to switch an optical beam path between a first beam path and a second beam path.

Provided is an optical device capable of suppressing variations in the range for scanning light. This optical device comprises: a light source that emits a laser beam; a MEMS mirror that scans the laser beam toward a predetermined range; and a diffraction grating that guides the laser beam to the MEMS mirror by guiding the laser beam in a direction corresponding to the wavelength thereof. The optical device also comprises an MEMS control unit that performs control such that, by employing a change in the optical path of the laser beam caused through the diffraction grating by a change in the wavelength of the laser beam, variations in the scanning range of the laser beam by the MEMS mirror are suppressed.