Abstract: An imaging lens assembly includes lens elements, a metal spacing structure and at least one blocking sheet. At least one lens element is a plastic lens element. The metal spacing structure is for maintaining the plastic lens element in a space between two sides thereof and two of the lens elements adjacent thereto, respectively. The metal spacing structure includes, in order from an object side to an image side, a first spacing ring having a first through hole and a second spacing ring having a second through hole, wherein the second through hole is larger than the first through hole. At least one of the first spacing ring and the second spacing ring is made of metal material. The blocking sheet is disposed between two of the lens elements, and is not disposed between the first spacing ring and the second spacing ring.

Abstract: An imaging lens system includes eight lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one lens element of the imaging lens system has at least one lens surface having at least one inflection point. The imaging lens system has a total of eight lens elements.

Abstract: A correction lens is used in an optical system in which a light-transmissive cover member having radii of curvature different from each other in a predetermined first direction and a second direction perpendicular to the first direction is disposed on an object side. Radii of curvature of an image-side surface of the correction lens are different in the first direction and the second direction, and satisfy a predetermined condition.

Abstract: A image capturing lens assembly includes six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex thereof; a second lens element having negative refractive power; a third lens element; a fourth lens element; a fifth lens element with positive refractive power having an object-side surface being convex and an image-side surface being convex thereof; and a sixth lens element having an image-side surface being concave in a paraxial region thereof, the image-side surface having at least one convex critical point in an off-axial region thereof, and an object-side surface and the image-side surface being aspheric.

Abstract: A lens attachment module is configured for coupling with a zoom module of a finite conjugate optical assembly. The lens attachment module includes a lens assembly that has a positive focal length, and exhibits a pupil size of between 16 and 25 mm and a pupil depth greater than 50 mm.

Abstract: A lens system is provided. The lens system includes a positive first lens group, an aperture diaphragm, a positive second lens group, and a third lens group, disposed sequentially from a subject side. The first lens group includes at least three positive lenses and at least one negative lens. The second lens group includes four or more lenses including at least one cemented lens. A negative lens with a concave surface toward the subject side is disposed at the subject side. The third lens group includes three or more lenses including at least one positive lens and at least one negative lens. When focusing is moving from an infinity-distance subject to a short-distance subject, the first lens group, the aperture diaphragm, and the second lens group move integrally toward the subject side, while the third lens group is fixed with respect to an image surface.

Abstract: Provided is a zoom lens including, in order from an object side to an image side, a positive first lens unit, a negative second lens unit, a positive third lens unit, a positive fourth lens unit and a rear lens group consisting of at least one lens unit. An interval between each pair of adjacent lens units is changed during zooming. The rear lens group includes a negative N-th lens unit configured to move during focusing. The second lens unit and the third lens unit are configured to move during zooming. A focal length of the second lens unit, a focal length of the third lens unit, a focal length of the fourth lens unit, a lateral magnification of the fourth lens unit at a wide angle end and a lateral magnification of the fourth lens unit at a telephoto end are appropriately set.

Abstract: A microscope is provided. The microscope includes an illumination source configured to provide illumination beams to image a portion of a biological sample. The microscope also includes an optical unit configured to enable both phase contrast imaging and multicolor fluorescence imaging of the portion of the biological sample utilizing parallel point scanning. The microscope further includes a detector configured to simultaneously acquire multiple point images at different locations of the portion of the biological sample.

Abstract: Luminescence imaging apparatus, methods and computer program products are disclosed. A time-resolved luminescence imaging apparatus (100A) comprises: an optical assembly (2) operable to generate an array of beams; a scanner (4A) operable to scan the array of beams with respect to a sample (8), along a single scanning axis; and a detector assembly (10) having an array of detector elements, adjacent detector elements being spaced apart by an inter-element gap, each detector element being operable to detect emissions generated by the sample (8) in response to the array of beams. In this way, different locations on the sample (8) may be simultaneously scanned and imaged by the detector assembly (10) in order to image multiple parts of the sample (8) simultaneously. Also, by scanning along a single scanning axis, the complexity of the scanner (4A) is significantly reduced and the speed of scanning is increased compared to scanners which have to scan in two dimensions, such as a traditional raster scan mechanism.

Abstract: A lighting device includes a light source generating a beam of illumination light, a ring-shaped aperture shielding a central portion of the illumination light and transforming the beam of illumination light into ring-shaped illumination light, and an object lens focusing the ring-shaped illumination light such that a specimen can be illuminated with the ring-shaped illumination light. An inspection apparatus including the light device also has a beam splitter and an image sensor picking up light reflected and/or diffracted from the specimen through the beam splitter. Because a central portion of the illumination light is shielded, lens flare of light transmitted by the beam splitter and the object lens is prevented thereby preventing speckles in the image produced by the image sensor.

Abstract: A stereo microscope of the Greenough type includes two separate imaging channels. The imaging channels have, starting from a common reference plane, beam paths that extend parallel to one another. An optical assembly sets a stereo angle in a Greenough stereo microscope.

Abstract: A camera module is provided. The camera module includes a housing, a lens assembly received in the housing and including at least one lens, an aperture including an aperture blade having an opening for adjusting an amount of external light incident on the at least one lens and a rotary shaft formed on a side of the aperture blade, in which the rotary shaft is coupled to the lens assembly such that the aperture blade is rotated about the rotary shaft, a magnet disposed on the aperture so as to be adjacent to the rotary shaft, at least one coil disposed on one surface of the housing so as to face the magnet, control circuitry that rotates the aperture using the coil, and a lens driving unit that moves the lens assembly in an optical axis direction of the lens.

Abstract: A micromechanical device with electromagnetic actuation includes a base and a micro electro mechanical system (MEMS). The MEMS includes a mobile rotating element based on one or two axes of rotation. The base includes stators each forming a first internal pole, an external pole and an air gap. In order to increase the reliability and the mechanical stability of the device, the first internal poles are mounted in a connected manner to each other onto the base.

Abstract: Systems and methods are provided for monitoring properties of a microelectromechanical systems (MEMS) oscillating structure. A system includes a MEMS oscillating structure configured as a non-linear resonator to oscillate about a rotation axis; a driver configured to generate a driving force for driving the MEMS oscillating structure about the rotation axis according to an operating response curve during which the MEMS oscillating structure is in resonance, the driver further configured to decrease the driving force when the MEMS oscillating structure is at a predefined tilt angle to induce an oscillation decay of the MEMS oscillating structure; a measurement circuit configured to measure an oscillation frequency and a tilt angle amplitude of the MEMS oscillating structure during a decay period; and processing circuitry configured to determine at least one characteristic of the MEMS oscillating structure based on at least one of the measured oscillation frequency and the measured tilt angle amplitude.

Abstract: A projector including a light source, a first prism, a second prism and a digital micro-mirror device (DMD) is provided. The light source emits light. The first prism includes a first surface, a second surface and a third surface which are connected to each other around the perimeter thereof, and the illumination light enters the first prism through the first surface. The second prism has a fourth surface and a fifth surface which are connected to each other, and the fourth surface faces the second surface of the first prism. The DMD faces the third surface. The illumination light sequentially passes through the first surface, is reflected by the second surface, passes through the third surface, and reaches the DMD. The DMD converts the illumination light into image light, and the image light sequentially passes through the third surface, the second surface, the fourth surface and the fifth surface.

Abstract: A display device, a display system, and a mobile object. The display device includes a light source configured to emit light, a light deflector to deflect the light incident on the light deflector in a main scanning direction and a sub-scanning direction, a divergence optical system to diverge the light deflected by the light deflector to form a virtual image to be visually recognized by an observer, and a dioptric system disposed on an optical path between the light deflector and the divergence optical system to refract the light deflected by the light deflector to be made incident on the divergence optical system. In the display device, the dioptric system has a refractive power different in the main scanning direction than in the sub-scanning direction. The display system includes the display device, an imaging optical system, and a reflector. The mobile object includes the display system.

Abstract: A Cascaded Mirror Array optical scanning system applies an array of reflectors, with each reflector (called array reflector for convenience) movable between discretized angular positions and independently switched by digitized electrical signals, to process a light beam by cascaded reflections to generate desired deflection angle of the beam. The precision of the discretized angular positions of each array reflector is maintained by a support structure, which supports the reflector while allowing it to rotate or tilt, and a set of positioning limiting structure, which limits the allowable angular position of the array reflector between a finite number of angular positions corresponding to the discretized angular positions.

Abstract: A mirror driving mechanism includes a plate-shaped base portion, a mirror that is installed at the base portion, and a temperature detecting section that is installed at the base portion and that detects a temperature of the base portion. The base portion includes a thin portion that is disposed away from an outer edge of the base portion and that has a through hole extending through the base portion in a plate-thickness direction of the base portion, a thick portion that is connected to the thin portion, that is thicker than the thin portion in the plate-thickness direction of the base portion, and that extends along the outer edge so as to surround the thin portion, and a first shaft portion extends into the through hole from an outer periphery of the through hole.

Abstract: A light shielding sheet for a lens is provided, including: a metal substrate, including: a first surface; a second surface opposing the first surface; a first through light hole being in communication with the first surface and having hole radiuses gradually decreasing in a direction from the first surface to the second surface, a ratio of a depth of the first through light hole to a difference between two of the hole radiuses at two ends of the first through light hole being less than or equal to 0.5; and a second through light hole being in communication with the first through light hole and the second surface; and a light extinction film covering the first surface, the second surface, a hole wall of the first through light hole and a portion of a hole wall of the second through light hole of the metal substrate.

Abstract: An optical system is arranged on an object side relative to a first optical portion, the first optical portion including a plurality of lens portions each configured to form an image of an object, and a plurality of filters corresponding to the plurality of lens portions, and the optical system includes a second optical portion including an optical surface common to the plurality of lens portions, wherein the following conditional expression is satisfied: 1 2 × arctan ? { 2 × tan ? ? ? ? ? 1 - ? ? ? h ? ? 1 D ? ? 1 1 - tan ? ? ? ? ? 1 × ( tan ? ? ? ? ? 1 - ? ? ? h ? ? 1 D ? ? 1 ) } < ? ? ? 1.

Abstract: The embodiments herein use a corrector plate or a light field display in an AR/VR display device to compensate for sub-optimal collimation at the edge of the FOV. In one embodiment, the corrector plate is disposed between the collimator and the viewer so that the light at the edge of the FOV can be corrected so that the aberrations mentioned above do not occur. In another embodiment, rather than using a corrector plate, the AR/VR display device can include a light field display that can use color intensity to pre-distort emitted light to compensate for sub-optimal collimation at the edge of the FOV. In this manner, the AR/VR display device can mitigate aberrations or distortions as the user moves her eyes relative to the display device.

Abstract: A foldable display device may include a display panel, first-set light control members, and second-set light control members. The display panel may include a first display portion, a second display portion, and a folding portion disposed between the first display portion and the second display portion. The first-set light control members may overlap the first display portion and may extend parallel to each other. The second-set light control members may overlap the second display portion and may extend parallel to each other.

Abstract: A near-eye display system includes a display panel to display a near-eye lightfield frame including an array of elemental images and an eye tracking component to track a pose of a user's eye. The system further includes a de-magnification optical element and a rendering component to adjust the rendering of foveal image content in the integral lightfield frame based on the pose of the user's eye. A method of operation of the near-eye display system includes determining, using an eye tracking component of the near-eye display system, a first pose of a user's eye and decreasing a magnification level at which foveal image content is to be displayed within the foveal field of view for the first pose. The decreased magnification level of the foveal image content is perceptible at a resolution higher than a native resolution of the display panel.

Abstract: A backlight unit includes a light source and a lens that has an incident surface facing the light source and an emission surface that is a surface on the opposite side to the incident surface and faces a liquid crystal display unit of a light transmission type, and has a shape of condensing light incident on the incident surface from the light source toward the liquid crystal display unit. The lens is configured with a transparent layer and a diffusion layer for diffusing light placed on top of each other between the incident surface and the emission surface. The diffusion layer covers an entire surface of the transparent layer on the liquid crystal display unit side.

Abstract: A display device includes a display panel having a first emission region and one or more second emission regions disposed adjacent to the first emission region. The display device includes a plurality of light emitters, arranged in the first emission region, corresponding to a first color gamut and a plurality of light emitters, arranged in the one or more second emission regions, corresponding to a second color gamut that is distinct from the first color gamut. A method for making a display device with a plurality of light emitters corresponding to a first color gamut in a first emission region and a plurality of light emitters corresponding to a second color gamut in a second emission region is also described.

Abstract: A three-dimensional display apparatus includes a display panel and an optical element. The display panel includes a display surface. The display surface extends in a first direction, extends in a second direction orthogonal to the first direction. The first direction corresponds to a parallax direction of user's eyes seeing an image. The display surface curves around a central axis extending in the second direction. The display surface includes subpixels arranged in a grid pattern in the first direction and the second direction within the display surface. The optical element is arranged along the display surface, and the optical element includes strip-shaped regions, each of which extends in a certain direction. The optical element is configured to define a beam direction of image light emitted from the subpixels. The display surface forms an arc in a cross-section that is orthogonal to the second direction.

Abstract: The present disclosure provides a virtual reality display device including an OLED display panel and an optical system. The optical system is disposed between the OLED display panel and a user viewing side. The optical system includes a first linear polarizing sheet disposed between the OLED display panel and the user viewing side, a first reflective-transmissive optical film disposed between the first linear polarizing sheet and the OLED display panel, and a first quarter-wave plate disposed between the first reflective-transmissive optical film and the OLED display panel.

Abstract: According to one embodiment, when displaying an image on a display panel, projecting an image which is displayed on the display panel, inclining the image which is projected from the display panel at a predetermined angle of bend, and reflecting the image which is projected from the display panel via a prism and guiding the image to a projection surface, a display device corrects input picture image of the prism based on characteristics contrary to the chromatic aberration characteristics of the prism.

Abstract: Provided is a head-mounted display 100 for displaying images transmitted from a rendering device 200. An orientation sensor 64 detects an orientation of the head-mounted display 100. An HDMI transmission/reception unit 90 receives frame data of an image to be displayed on the head-mounted display 100 and predicted orientation information of the head-mounted display 100 that is transmitted synchronously with the frame data of the image. A re-projection unit 60 corrects the frame data of the image on the basis of a difference between a latest orientation information detected by the orientation sensor 64 and the predicted orientation information so that the frame data of the image suits a latest orientation of the head-mounted display 100.

Abstract: A display device includes a display panel having a first emission region and one or more second emission regions disposed adjacent to the first emission region. The display device includes a plurality of light emitters, arranged in the first emission region, corresponding to a first color gamut and a plurality of light emitters, arranged in the one or more second emission regions, corresponding to a second color gamut that is distinct from the first color gamut. A method for making a display device with a plurality of light emitters corresponding to a first color gamut in a first emission region and a plurality of light emitters corresponding to a second color gamut in a second emission region is also described.

Abstract: An imaging assisting device includes a head-mounted display unit worn to a head of a user, and a control unit configured to control the head-mounted display unit. The head-mounted display unit includes a frame worn to the head of the user and a display screen of transmissive type supported by the frame at a position where the display screen covers a field of view of the user in a state that the frame is worn by the user, the display screen being configured to display an object defined in a virtual space such that the object is superimposed on a real space. The control unit displays a guide graphic on the display screen as an object defined in the virtual space, the guide graphic indicating an imaging range of an imaging module.

Abstract: A scent visualization system may comprise a display apparatus for generating a target image including a target object; an olfactory sensor for detecting a scent; and a scent visualization apparatus for generating target associative visualization information that reminds the scent from the target image received from the display apparatus and sensing information received from the olfactory sensor, and generating an associative image by combining the target associative visualization information and the target image. Therefore, a low-cost, high-efficiency, high-utilization, and high-convenience scent visualization system can be provided.

Abstract: A system for generating a frame for display on a see-through display, while correcting, at least partially, a rolling display effect.

Abstract: Systems, devices, and methods to perform alignment in a projector are described. Laser light emitted is directed to at least one lens, which directs the laser light to a diffractive optical element (DOE), which produces a diffracted light. A sensor measures a property of the diffracted light, and a position of at least one lens adjusted to improve a quality of the diffracted light. The lens is fixed in position to the improvement in the quality of diffracted light achieving a defined threshold. The characteristic may include brightness.

Abstract: A display system includes an HMD and a PC. The HMD displays an image on a scene in a real space in an overlapped manner. The PC includes a first control unit. The first control unit causes the HMD to display a guide image indicating a direction set based on a robot to correspond to a robot arranged in the real space. On a tool of the robot, a tool coordinate system is set based on the tool. The first control unit displays the guide image indicating the tool coordinate system in accordance with a direction of the tool. The guide image includes an X-axis image, a Y-axis image, and a Z-axis image.

Abstract: Disclosed is a method for detecting a shadow in an image of an eye region of a user wearing a Head Mounted Device, HMD. The method comprises obtaining, from a camera of the HMD, an image of the eye region of the user wearing a HMD and determining an area of interest in the image, the area of interest comprising a plurality of subareas. The method further comprises determining a first brightness level for a first subarea of the plurality of subareas and determining a second brightness level for a second subarea of the plurality of subareas. The method further comprises comparing the first brightness level with the second brightness level, and, based on the comparing, selectively generating a signal indicating a shadow.

Abstract: A head-mounted display apparatus according to the present disclosure includes an image generating module, a first deflecting element including a first deflecting portion configured to deflect, along a second optical axis intersecting the first optical axis, imaging light from the image generating module, and a second deflecting portion configured to deflect the imaging light along a third optical axis, a first diffraction element configured to diffract the imaging light from the second deflecting portion, and a second diffraction element configured to diffract the imaging light from the first diffraction element. A distance along the first optical axis between the image generating module and the first deflecting portion is longer than a distance along the third optical axis between the first diffraction element and the second deflecting portion.

Abstract: A head-mounted display apparatus according to an aspect of the present disclosure includes an imaging light generating device, a first deflection element including a first deflection section configured to deflect imaging light in a first direction and a second deflection section configured to deflect the imaging light in a second direction, a first diffraction element, and a second diffraction element. When a plane surrounded by the principal ray passing plane, the first principal ray, the second principal ray, and the first deflection section is taken as a first plane, and a plane surrounded by the second deflection section, the first principal ray, the second principal ray, and the first diffraction element is taken as a second plane, the first plane overlaps with at least a part of the second plane when viewed from the third direction and does not overlap with the second plane when viewed from the fourth direction.

Abstract: A display system comprising a foveal display having a monocular field of view of at least 1 degree is positioned within a scannable field of view of at least 20 degrees, the foveal display positioned for a user. In one embodiment, the foveal display is positioned for the user's fovea.

Abstract: An optical system for displaying light from a scene includes an active optical component that includes a first plurality of light directing apertures, an optical detector, a processor, a display, and a second plurality of light directing apertures. The first plurality of light directing apertures is positioned to provide an optical input to the optical detector. The optical detector is positioned to receive the optical input and convert the optical input to an electrical signal corresponding to intensity and location data. The processor is connected to receive the data from the optical detector and process the data for the display. The second plurality of light directing apertures is positioned to provide an optical output from the display.

Abstract: Head-mounted display with an eye-tracking system and including a light-transmitting substrate (20) having two major surfaces and edges, optical means for coupling light into said substrate (20) by total internal reflection, partially-reflecting surfaces (22a-22c) carried by the substrate (20) that are not parallel with the major surfaces of the substrate (20), a near-infrared light source (78) and a display source (92) projecting within the photopic spectrum, wherein light from the light source (78) and light from the display source (92) are coupled into the substrate (20) by total internal reflection.

Abstract: A head-mounted display (HMD) apparatus comprises a head attachment unit comprising a first attachment member configured to attach the HMD to a user's head when the HMD is worn by the user and a first element having an adjustable weight distribution, and an adjustment unit configured to adjust a distribution of the weight of the HMD based on user profile information associated with the user, wherein the adjustment unit is configured to adjust the weight distribution of the first element of the HMD based on the user profile information by adjusting a configuration of one or more mobile components of the first element without adjusting a position or an orientation of the first element with respect to the HMD.

Abstract: A dual mode virtual reality (VR) and augmented reality (AR) headset includes a head-attachment, a main frame coupled to the head-attachment, and a pivot frame. The pivot frame includes a holder configured to accommodate an electronic device having a display screen, and a reflective screen configured to reflect content shown on the display screen. The pivot frame pivotally coupled to the main frame. In the first pivot frame position, the reflective screen at least partially intersects a field of view (?) of a user wearing the headset, and in the second pivot frame position the display screen at least partially intersects the ? when the electronic device is accommodated in the holder.

Abstract: A head-mounted display apparatus includes a display unit configured to emit image light to display an image, a support portion that supports the display unit, and a nose pad attached to the support portion. The support portion includes an attachment portion to which the nose pad is attached. The nose pad includes an insertion portion inserted into the attachment portion. The attachment portion includes an insertion opening into which the insertion portion is inserted, and a locking portion configured to lock the nose pad in a first position and a second position that are different from each other in a rotational direction of the nose pad centered at the insertion portion inserted into the insertion opening.

Abstract: An optical element including a body of optical material; and a plurality of microstructures along a surface of the body, wherein each microstructure of the plurality of microstructures has a sag profile. An optical system can include a light source; and an optical element having a body of optical material and a plurality of microstructures along a surface of the body, wherein each microstructure of the plurality of microstructures generates a super-cosine intensity profile that provides an irradiance over a field of view. Methods of making and using the optical element and optical system are also disclosed.

Abstract: An optical element comprising a body having a surface, wherein the surface has a plurality of regions periodically arranged in a tessellation, and wherein each region of the plurality of regions has a random spatial distribution of microstructures is disclosed. An optical system comprises a light source; and the optical element is also disclosed. Methods of making and using the optical element and the optical system are also disclosed.

Abstract: Various embodiments provide optical lenses that include phase shift layers that transmit incident light with four or more distinct phase quantizations. In one embodiment, a lens includes a substrate, a first immersion material layer on the substrate, and a plurality of anti-reflective phase shift layers on the first immersion material layer. The phase shift layers define a first anti-reflective phase shift region that transmits received light without a phase shift, a second anti-reflective phase shift region configured to transmit the received light with a first phase shift, a third anti-reflective phase shift region configured to transmit the received light with a second phase shift, and a fourth anti-reflective phase shift region configured to transmit the received light with a third phase shift. The first, second, and third phase shifts are different from one another.

Abstract: A multi-layer optical device may include one, two, or three layers. A first layer may include an array of Fourier-transforming optically transmissive elements to map optical radiation between each of a plurality of angles of incidence and corresponding coordinate locations proximate each respective optically transmissive element. A second layer may provide a modulation matrix of optically modulating sub-elements optically coupled to the array of transmissive elements, where each optically modulating sub-element corresponds to one of the coordinate locations of the first layer mapping. A third layer includes an array of inverse Fourier-transforming optically transmissive elements to inverse-map optical radiation from the optically modulating sub-elements of the modulation matrix for propagation at angles corresponding to the angles of incidence from which the optical radiation was received.

Abstract: In a general aspect, quantum electrodynamic (QED) interactions are generated using a parabolic transmission mirror. In some aspects, a system for generating a QED interaction includes an optical pulse generator and a vacuum chamber. The vacuum chamber includes a parabolic transmission mirror in an ultra-high vacuum region within the vacuum chamber. The parabolic transmission mirror is configured to produce the QED interaction in the ultra-high vacuum region based on an optical pulse from the optical pulse generator. The parabolic transmission mirror includes an optical inlet at a first end and an optical outlet at a second, opposite end. The parabolic transmission mirror also includes a parabolic reflective surface about an internal volume of the parabolic transmission mirror between the first and second ends. The parabolic reflective surface extends from the optical inlet to the optical outlet and defines a focal point outside the internal volume of the parabolic transmission mirror.

Abstract: A display device of the present disclosure includes, along an optical path of imaging light emitted from an imaging light generation device, a first optical portion having a positive power, a second optical portion including a first diffraction element and having a positive power, a third optical portion having a positive power, and a fourth optical portion including a second diffraction element and having a positive power. In the optical path, the first diffraction element and the second diffraction element diffract the imaging light at least along a primary diffraction plane and a secondary diffraction plane orthogonal to the primary diffraction plane, and a deflection force of the imaging light in the primary diffraction plane is greater than a deflection force of the imaging light in the secondary diffraction plane.