Abstract: The invention provides a light spot scanning device, a scanning method thereof, and a medical cosmetology device, belonging to the technical field of medical cosmetology, comprising a laser and a collimating lens and a reflector arranged in sequence along the optical path transmission direction of the laser. The reflector is also connected with a driving member, the laser beam emitted by the laser forms a linear light spot through the collimating lens, and the reflector is driven to continuously rotate according to a preset path through the driving member. A plurality of linear light spots formed by the continuous rotation are sequentially overlapped on the light exiting side of the reflector to form a scanning linear light spot. Each time the reflector rotates, a group of linear light spots is formed. After continuous rotation, multiple groups of sequentially overlapping linear light spots are formed on the light exiting side of the reflector, called scanning linear light spots.

Abstract: A system and a method include a substrate having a surface, such as an exterior surface of a vehicle. An electrophoretic display is disposed on the surface. A control unit is coupled to the electrophoretic display. The control unit is configured to selectively change one or more properties of the electrophoretic display.

Abstract: The present invention relates to an eyepiece optical system and a head-mounted display device. The system includes a first lens group, a second lens group, a third lens group, and a fourth lens group arranged coaxially and sequentially in an optical axis direction from an observation side of human eyes to a micro-image display side, wherein the first lens group has a positive effective focal length and is composed of a first lens close to a human eye side and a second lens away from the human eye side, the second lens group has a negative effective focal length and is composed of a third lens and a fourth lens, the third lens group has a positive effective focal length and is composed of a fifth lens, and the fourth lens group is composed of a sixth lens and a seventh lens. The system is suitable for head-mounted displays.

Abstract: A device (1) for modulating a physical property of a light beam in response to an electrical signal is provided, comprising at least one light modulating element (13) capable of modulating a physical property of a light beam in response to an electrical signal and an enclosure (10) enclosing the at least one light modulating element (13). The enclosure (10) is configured to be integrated on a printed circuit board (40, 100).

Abstract: A compact single-axis confocal endomicroscope is provided, capable of complying with 2.8 mm diameter endoscope space requirements. The single-axis confocal endomicroscope uses a folded path design achieved between a fixed mirror and a lateral plane scanning mirror thereby producing high numerical apertures that allow for diffraction-limited resolution in sub-surface scanning. The scanning mirror has a central aperture that allows for illumination beam expansion in the folded path design.

Abstract: A system for reducing glare experienced by a driver. The system includes a camera and a processor mounted on a vehicle and a display screen mounted on a windshield of the vehicle. The processor captures an image from the camera, detecting one or more headlights within the image using one or more Haar-Cascade classifiers and determining current measured positions of the headlights within the image. The processor is further configured for determining a location of one or more blots on the display screen, based on setup locations of the blots, Kalman filter predicted positions of the headlights within the image updated with the current measured positions. The processor is configured for sending commands to put pixels in the blots on the display screen into a low transparency state. The system includes controls configured for sending control signals for changing the setup location of the blots.

Abstract: An example system includes a first steering lens positioned between an EM source and a second steering lens, and the second steering lens positioned between the first steering lens and an emission lens. The example system includes the first and second steering lenses having a combined first effective focal length, and where the emission lens is a positive lens have a second focal length. The example system includes the first effective focal length being shorter than the second focal length. The example system includes a first steering actuator that move the first steering lens along a first movement course, and a second steering actuator that moves the second steering lens along a second movement course.

Abstract: An optical metasurface film includes a flexible polymeric film having a first major surface, a patterned polymer layer having a first surface proximate to the first major surface of the flexible polymeric film and having a second nanostructured surface opposite the first surface, and a refractive index contrast layer adjacent to the nanostructured surface of the patterned polymer layer forming a nanostructured bilayer with a nanostructured interface. The nanostructured bilayer acts locally on amplitude, phase, or polarization of light, or a combination thereof and imparts a light phase shift that varies as a function of position of the nano structured bilayer on the flexible polymeric film. The light phase shift of the nanostructured bilayer defines a predetermined operative phase profile of the optical metasurface film.

Abstract: A portable confocal optical scanning microscopic device includes an optical path module, a light source module, a light receiving module and an object stage, wherein the optical path module includes a beam splitter and a focusing lens; the light source module includes a light generator for generating an incident light and can be injected into the beam splitter; the light receiving module includes a spatial filter; the object stage is for setting a test specimen. The optical path module, the light source module, the light receiving module, and the object stage can be disassembled and assembled on the operating board to flexibly configure an adaptive combination capable of performing the optical scanning.

Abstract: An instrument for the manipulation of the light wavefront, and a method for the manipulation of the light wavefront. The instrument for the manipulation of the light wavefront comprises: two or more active light modulation areas, and an optical system that determines an optical path between the active light modulation areas, which conjugates the planes (2, 6; 9, 12) of the active light modulation areas, the optical system comprising at least one mirror (4; 11) and at least one lens (3, 5; 10), wherein the active light modulation areas have a phase modulation depth of equal to or less than ? radians.

Abstract: Embodiments of the present disclosure generally relate to methods of forming a substrate having a target thickness distribution at one or more eyepiece areas across a substrate. The substrate includes eyepiece areas corresponding to areas where optical device eyepieces are to be formed on the substrate. Each eyepiece area includes a target thickness distribution. A base substrate thickness distribution of a base substrate is measured such that a target thickness change can be determined. The methods described herein are utilized along with the target thickness change to form a substrate with the target thickness distribution.

Abstract: An optical system for a head-worn computer includes an upper optical module adapted to convert illumination into image light by illuminating a reflective display through a field lens, wherein the image light is transmitted back through the field lens, then through a partially reflective partially transmissive surface and into a lower optic module adapted to present the image light to an eye of a user wearing the head-worn computer and the upper optical module being positioned within a housing for the head-worn computer and having a height of less than 24 mm, as measured from the reflective display to the bottom edge of the rotationally curved partial mirror.

Abstract: A light modulator includes a beam homogenizer having microstructure, and a curved light transmitting substrate having at least one curving surface, wherein the beam homogenizer is arranged on the curving surface of the curved light transmitting substrate to configure the microstructure of the beam homogenizer on the curving surface of the curved light transmitting substrate.

Abstract: A refrigerating appliance includes a lighting system having a lighting device arranged to operatively illuminate the interior of the refrigerating appliance based on a predetermined condition. The lighting device includes a light source and an electrochromic device. The light source is arranged to selectively provide a first light to the electrochromic device. The electrochromic device is selectively operable to emit a second light within the interior. The color, color temperature, and diffusion of the second light can be indicative of a status of the refrigerating appliance and can be selectable by a user.

Abstract: A lens groups includes a first lens, a transflective film, a second lens, a composite film, a third lens and a fourth lens arranged in sequence. The first lens includes a first surface and a second surface. The second lens comprises a third surface and a fourth surface, the third surface faces to the second surface. The transflective film is attached to the third surface and the composite film is attached to the fourth surface. The composite film includes a phase retardation layer and a reflective polarizing layer, and the phase retardation layer is attached to the fourth surface. The third lens includes a fifth surface and a sixth surface, the fifth surface faces to the fourth surface. The fourth lens comprises a seventh surface and an eighth surface, the seventh surface faces to the sixth surface. A near-to-eye display device is further disclosed.

Abstract: An optical imaging lens includes a first lens element to a seventh lens element. An optical-axis region of the object-side surface of the second lens element is convex, a periphery region of the image-side surface of the second lens element is concave, an optical-axis region of the image-side surface of the third lens element is convex, a periphery region of the object-side surface of the fifth lens element is concave, a periphery region of the object-side surface of the sixth lens element is concave, the lens elements included by the optical imaging lens are only the seven lens elements described above, and the optical imaging lens satisfies the relationship: (T2+T6)/T7?2.200.

Abstract: A dual-modulation laser projection system (100) includes a polarizing beamsplitter (110) for splitting laser light (180) into first (182) and second (184) polarized beams having mutually orthogonal polarizations, a phase spatial light modulator (120) for beam steering the second polarized beam (184), a mechanical amplitude spatial light modulator (130) for amplitude modulating a combination of the first polarized beam (182) and the second polarized beam (186) as beam steered by the phase spatial light modulator (120), and a filter (140) for removing, from the combination (190) of the first and second polarized beams, one or more of a plurality of diffraction orders introduced by the mechanical amplitude spatial light modulator (130), to generate filtered, modulated output light (192).

Abstract: An optical encoder comprises an emitter; a receiver; a reflector; and a code carrier, wherein the emitter emits electromagnetic radiation along an emission axis in the direction of the reflector and the reflector deflects the electromagnetic radiation along a reception axis in the direction of the receiver. The code carrier is movably supported and has a sequence of code sections to interrupt or to give way for the emitted electromagnetic radiation to impinge on the detector in dependence on the position of the code carrier, wherein the emission axis and the reception axis extend at an alignment angle with respect to one another that has a value in the range from 30 degrees to 150 degrees.

Abstract: An optical modulating device of the present disclosure includes an optical splitter, an optical phase modulator and an optical combiner. The optical splitter splits an inputting optical signal by an optical splitting ratio to generate a first split optical signal and a second split optical signal. The optical phase modulator phase modulates the first split optical signal and the second split optical signal to respectively generate a first modulating optical signal and a second modulating optical signal. The optical combiner combines the first modulating optical signal and the second modulating optical signal by a combining ratio to generate an outputting optical signal having a chirp, the combining ratio being equal to the optical splitting ratio, a value of the combining ratio being a positive number, and the value being less than one or more than one.

Abstract: A laser system includes a first laser cavity to output a laser light along a first path, a first mirror to receive the laser light from the first laser cavity, and redirect the laser light along a second path that is different than the first path, a second mirror to receive the laser light from the first mirror, and redirect the laser light along a third path that is different than the first path and the second path, a beam splitter located at a first position on the third path, a beam combiner located at a second position on the third path; and a coupling lens assembly, the coupling lens assembly including a lens located at a third position on the third path, wherein the coupling lens assembly moves the lens in x-, y-, and x-directions.