Abstract: A method for generating a composite image obtained in a fluorescence imaging system, comprising: determining the physical locations of a pinhole mask relative to a sample required to construct a full composite confocal image; generating in a control module a randomized order for the determined physical locations; moving the photomask or the sample to the determined physical locations in the randomized order under control of the control module and using a translation stage; illuminating the sample through the photomask using an excitation light; capturing a plurality of images at each of the physical locations using a sensor in order to generate a set of data points; using the randomized order to generate a composite image based on the set of data points and measuring the brightness of at least some of the data points; and adjusting the brightness of some of the set of data points.

Abstract: Thermal control logic receives a temperature signal representative of a temperature of a liquid crystal display (LCD). The thermal control logic is configured to selectively drive a motion actuator to couple a heat conduction element with a heat sinking layer that receives heat from one or more processors. The heat conduction element is coupled between the heat sinking layer and the LCD.

Abstract: A backlight unit including an input coupler, a holographic display apparatus including the backlight unit, and a method of manufacturing the input coupler are provided. The backlight unit includes the input coupler configured to cause light incident on a light incident surface of a light guide plate to travel into the light guide plate, the input coupler has a binary grating structure in which a plurality of barriers are arranged parallel to one another at a constant grating period, and the plurality of barriers are tilted from the light incident on the light incident surface.

Abstract: Embodiments of the present disclosure disclose a display device, a display method and a head-mounted virtual display helmet. The display device includes: a display panel; and a first lens having a first focal length, a spatial filtering component configured for filtering and a second lens having a second focal length which are arranged in order at a light exit side of the display panel, wherein the second focal length is different from the first focal length.

Abstract: A near-eye display assembly presented herein includes an electronic display, an optical assembly, and scanning assembly. The electronic display has a first resolution. The optical assembly controls a field of view at an eye box and directs a plurality of light rays emitting from the electronic display toward the eye box. The scanning assembly shifts a direction of at least one of the light rays in accordance with emission instructions such that a virtual display is presented to the eye box, the virtual display having a second resolution greater than the first resolution. The display assembly can be implemented as a component of a head-mounted display of an artificial reality system.

Abstract: A drive-condition setting device applied to an optical scanning apparatus having a fiber and an actuator that vibrates a distal end of the fiber, the drive-condition setting device detects a scan pattern of the illumination light output from the fiber, measures resonance frequencies in the x direction and the y direction of the fiber, sets a drive frequency and a drive voltage based on the resonance frequencies such that conditional expressions below are satisfied: when fx>fy, fd<fy and Vx?Vy (1) or fd>fx and Vx?Vy (2), and when fx?fy, fd<fx and Vx?Vy (3) or fd>fy and Vx?Vy (4) where fd denotes the drive frequency, Vx denotes a maximum voltage of a X direction drive signal, and Vy denotes a maximum voltage of a y direction drive signal.

Abstract: The present disclosure generally relates to retroreflective elements including a core and a plurality of glass or glass-ceramic beads adjacent to the core. The retroreflective elements further include a plurality of particles having a diameter that is less than the diameter of the glass or glass ceramic beads in the retroreflective elements. The present disclosure also generally relates to articles (including, for example, retroreflective roadway liquid pavement markings) including these retroreflective elements and methods of making and using these retroreflective elements.

Abstract: Provided a reflecting device in which a mirror area is large, wide angle scanning is possible, and a size thereof is reduced, and particularly a downsized reflecting device that has a suitable specification as vehicle-mounted LiDAR. The reflecting device includes an oscillation part, and the oscillation part includes a mirror part supported on a support frame, and a hinge part engaging the mirror part and the support frame. The mirror part oscillates with respect to the support frame, and the hinge part has a tensile strength of 1500 MPa or higher. A mass M of the mirror part and a resonance frequency f0 of the oscillation part satisfy a relational expression (1) below, 0.49*f0+6.23?M?68.6*f0+46.

Abstract: Provided are a hybrid two-dimensional (2D) scanner system and a method of operating the same. The hybrid 2D scanner system includes a meta-surface based one-dimensional (1D) scanner and a mechanical scanner connected to the meta-surface based 1D scanner. In this scanner system, the mechanical scanner is operated as a 1D scanner. For this purpose, one of two rotational axes included in the mechanical scanner is maintained in a fixed position during a scanning operation. The meta-surface based 1D scanner may include a base substrate, a meta-surface that is arranged on the base substrate and includes a channel array, and a power supply configured to apply a voltage to the channel array.

Abstract: A beam expanding structure and an optical display module are disclosed. The beam expanding structure includes a plurality of transparent substrates in a stacked arrangement. Each transparent substrate includes a first reflective area and a second transflective. In each transparent substrate, the first area is to reflect a light beam incident thereon to the second area of one or more transparent substrate at downstream; the second area is to transmit part of a light beam received from one or more transparent substrate at upstream to an observation point, while reflecting rest of the light beam received from the one or more transparent substrate at upstream back to one or more transparent substrate at upstream; and the second area is further to at least partially reflect a light beam received from one or more transparent substrate at downstream back to one or more transparent substrate at downstream.

Abstract: A bi-acylindrical lens collimates a divergent elliptical laser beam. A first surface of the bi-acylindrical lens is shaped to form a first acylindrical lens, and a second surface of the bi-acylindrical lens is shaped to form a second acylindrical lens. The first acylindrical lens collimates the divergent elliptical laser beam on the fast axis, and the second acylindrical lens collimates the diverging elliptical laser beam on the slow axis.

Abstract: An apparatus for mitigating contamination of an optical device comprises an open-topped, closed-sided, and closed-bottomed housing cup partially defining a protected volume to enclose the optical device. A housing cap encloses a top of the housing cup and partially defines the protected volume. The housing cap includes a top collar having an open central aperture. The top collar includes at least one drain channel extending longitudinally downward into a top collar top surface and extending across the top collar top surface laterally outward from the central aperture. A top cover laterally spans the central aperture of the top collar. An interface structure circumscribes the top cover to suspend the top cover downwardly into the housing cup from the top collar. The interface structure prevents direct contact between the top cover and the top collar.

Abstract: An external side mirror is pivotable relative to a vehicle to which it is attached. The external side mirror includes an outer cover, and a housing bracket within the outer cover. The housing bracket is mounted or attached to the outer cover. A gasket is removably attached to the underside of the housing bracket. The gasket has a plurality of hooks that extend upwardly and attach to the housing bracket. Support ribs extending from the outer cover trap the hooks against the housing bracket. This allows the gasket to pivot along with the external side mirror relative to the vehicle to keep the gasket hidden from view even when the external side mirror is pivoted.

Abstract: A media-defined optical logic circuit composed of a set of light-transmitting polyhedral prisms arranged so that a pair of adjacent prisms can exchange photonic signals through adjacent surfaces. Each prism contains one or more quantum dots that, when excited by a photonic signal received from an adjacent prism, respond by emitting light that becomes an incoming photonic signal for an adjacent prism. Photonic signals are propagated through the circuit in this manner along light-guide paths created by shading certain surfaces to render them fully or partially opaque. The prisms and shading are arranged such that the circuit performs a certain logic function. When the circuit receives a set of photonic input signals representing a binary input value, the circuit responds by emitting a set of photonic output signals that represent a binary output value determined by performing the logic function upon the binary input value.

Abstract: A head-up display device for displaying a virtual image superimposed over a field of view to a viewer is provided. The head-up display device includes a picture generating unit having an illumination source, such as a laser, to generate a real image following a first light beam. A windshield of a vehicle engages the first light beam, either at an inclined angle or perpendicular, to reflect the first light beam away from the viewer as reflected images. A combiner disposed on the windshield including a holographic optical element steers the first light beam toward the viewer as a third light beam to present the virtual image within the field of view of the viewer. Mirrors may direct and magnify first light beam onto the combiner. A method for displaying a virtual image superimposed over a field of view to a viewer using a head-up display device is also provided.

Abstract: An illustrative example MEMS device includes a base and a plurality of mirror surfaces supported on the base. The plurality of mirror surfaces are respectively in a fixed position relative to the base. The plurality of mirror surfaces are at respective angles relative to a reference. The respective angles of at least some of the mirror surfaces are different from the respective angles of at least some others of the mirror surfaces.

Abstract: Embodiments relate to microelectromechanical systems (MEMS) and more particularly to membrane structures comprising pixels for use in, e.g., display devices. In embodiments, a membrane structure comprises a monocrystalline silicon membrane above a cavity formed over a silicon substrate. The membrane structure can comprise a light interference structure that, depending upon a variable distance between the membrane and the substrate, transmits or reflects different wavelengths of light. Related devices, systems and methods are also disclosed.

Abstract: An optical device (1) includes two prism bodies (41, 42) and four side panels (71-74) attached to both prism bodies (41, 42). A cavity (9) is thereby enclosed. A first reflector (81) can be present at a first side face (81) of the first prism body (41), and a second reflector (82) can be present at a second side face (82) of the second prism body (42). At least one of the prism bodies (41, 42) and/or at least one of the side panels (71-74) can be at least in part made of a non-transparent dielectric material such as a printed circuit board. In some implementations, an optoelectronic component (90) can be attached to the respective constituent of the optical device (1).

Abstract: A microscope apparatus includes: an objective lens; an observation optical system that makes the specimen be irradiated with excitation light by the objective lens, and acquires image information of the specimen; a first stimulation optical system that includes a scanning section which scans stimulus light, makes the scanning section scan an irradiation position of the stimulus light and applies an optical stimulus to the specimen; a second stimulation optical system that includes an SLM arranged at a pupil conjugate position of the objective lens and capable of modulating a phase of the stimulus light, selectively switches the irradiation position of the stimulus light by the SLM and applies the optical stimulus to the specimen; and a light path selecting section that selects at least one of a light path of the first stimulation optical system and a light path of the second stimulation optical system.

Abstract: A machine is configured to perform hologram location within a scene to be generated. The machine accesses target motion data that describes movement of a target device. Based on the target motion data, the machine determines a target motion vector that indicates a target speed of the target device and indicates a target direction in which the target device is moving. The machine determines a hologram motion vector for a hologram to be generated for display by a user device. The hologram motion vector indicates a relative speed of the hologram and indicates a relative direction of movement for the hologram. The machine then causes the user device to generate a scene in which the hologram moves at a speed determined based on the target speed and on the relative speed, as well as moves in a direction determined based on the target direction and on the relative direction.