Abstract: A zoom optical system includes a plurality of lens groups, and upon zooming distances between adjacent lens groups change. The zoom optical system has a focusing lens group that moves upon focusing and an image-side lens group disposed adjacent to an image side of the focusing lens group. The zoom optical system satisfies the conditional expression 0.000<dL0t/dL1t<1.000, where dL0t denotes a distance on an optical axis between the focusing lens group and the image-side lens group upon focusing on an infinity object in a telephoto end state, and dL1t denotes a distance on the optical axis between the focusing lens group and the image-side lens group upon focusing on a short-distance object in the telephoto end state.

Abstract: A zoom lens system includes at least six lens groups, each of which has power. An interval between each pair of lens groups that are adjacent to each other among the at least six lens groups changes while the zoom lens system is zooming. Each of three lens groups, which are respectively located closest, second closest, and third closest to an image plane, out of the at least six lens groups consists of one or more bonded lenses.

Abstract: The invention provides a wide-aperture spherical primary mirror off-axis afocal optical system, including a primary mirror, a secondary mirror and an aberration compensation mirror group. The primary mirror is a spherical reflector, the secondary mirror are higher-order aspherical reflectors. The primary mirror and the secondary mirror form an off-axis two-mirror system to compress the beam aperture. The aberration compensation mirror group is a coaxial reflective system that is used off-axis. The aberration compensation mirror group has focal power to produce compensation aberrations. The incident beam passes through and is reflected by the primary mirror and secondary mirror sequentially and enters the aberration compensation mirror group thereafter.

Abstract: Systems and methods can be employed for trans-tympanic membrane access to the middle ear for delivery of a formulation or implant device to a target location under direct visualization. The systems and methods can also be used to improve accessibility and visualization for various otological surgical procedures, such as, but not limited to, cholesteatoma removal, tympanic membrane repair and ossicular chain repair.

Abstract: The present description relates to a device that includes: a microscope lens with an optical axis; a mounting that includes a distal portion, in which the microscope lens is arranged; a first end piece fixed in a removable manner, in a first operating mode for in vivo microscopic analysis of the skin, to the distal portion of the mounting; a second end piece fixed in a removable manner, in a second operating mode for ex vivo microscopic analysis of a sample, to the distal portion of the mounting; a sample carrier with a receiving surface; a support that cooperates with the second end piece in the second operating mode so as to receive the mounting so that the optical axis of the microscope lens is substantially aligned in a predetermined direction with respect to the receiving surface.

Abstract: A method for manipulating at least one beam path in a microscope includes ascertaining a refractive index of a sample arranged in a sample volume and/or of an optical medium arranged in the sample volume. At least one microscope parameter is set in dependence on the ascertained refractive index for manipulating the beam path.

Abstract: An electromagnetic wave detecting device comprising: an emission unit configured to emit electromagnetic waves having coherence; an electromagnetic wave modulating unit configured to modulate one or both of a phase and an amplitude of the emitted electromagnetic waves and to change a state of the modulation relative to an imaging target; and a post-modulation electromagnetic wave intensity detecting unit configured to detect an intensity of post-modulation electromagnetic waves, which are the modulated electromagnetic waves acquired by modulating the electromagnetic waves emitted from the emission unit using the imaging target and the electromagnetic wave modulating unit, using one pixel.

Abstract: A high-throughput optical sectioning three-dimensional imaging system which includes: a light beam modulation module configured to modulate a light beam into a modulated light beam capable of being focused on a focal plane of an objective lens and being defocused on a defocusing plane of the objective lens; an imaging module configured to employ a camera to image, in different rows of pixels, a sample under illumination of the modulated light beam; a cutting module configured to cut off an imaged surface layer of the sample; a demodulation module configured to demodulate a sample image of one sample strip of one surface layer into an optical sectioning image, and reconstruct the optical sectioning image of each sample strip of each surface layer into a three-dimensional image. The present disclosure achieves imaging of a whole sample by dividing the sample into at least one surface layer, dividing the at least one surface layer into at least one sample strip, and imaging each sample strip.

Abstract: Apparatuses, systems and methods for generating color video with a monochrome sensor include the acts of (i) selectively energizing each of a plurality of light sources in a sequence, (ii) capturing a monochrome image of the illuminated sample at a monochrome sensor at each stage of the sequence, and (iii) generating a color video from the monochrome images. The sequence can have a series of stages with each stage of the sequence corresponding to activation of a different wavelength of light from the light sources to illuminate a sample. Generating the monochrome video can include the acts of compiling a plurality of monochrome images captured at the monochrome sensor with a single light source into a series of monochrome video frames comprising the monochrome video.

Abstract: An illumination lens consists of a first lens and a second lens that are arranged in this order from a light source side toward an irradiation target side. The surface of the first lens close to the light source side and the surface of the first lens close to the irradiation target side are spherical convex surfaces, and the surface of the second lens close to the light source side is a spherical convex surface. Conditional expression determined in advance about the radii of curvature of the surfaces of the first and second lenses is satisfied.

Abstract: Embodiments of the disclosure provide micromachined mirror assemblies and hybrid driving methods thereof. In one example, a micromachined mirror assembly includes a base and an array of micro mirrors affixed on the base. The base is configured to tilt around a base tilting axis. Each micro mirror in the array of micro mirrors is configured to tilt around a respective mirror tilting axis. Each of the mirror tilting axes is parallel to one another and is nonparallel to the base tilting axis.

Abstract: A method for manufacturing an optical device includes: preparing a semiconductor substrate that includes a portion corresponding to a base, a movable unit, and an elastic support portion; forming a first resist layer in a region corresponding to the base on a surface of a first semiconductor layer which is opposite to an insulating layer; forming a depression in the first semiconductor layer by etching the first semiconductor layer using the first resist layer as a mask; forming a second resist layer in a region corresponding to a rib portion on a bottom surface of the depression, a side surface of the depression, and the surface of the first semiconductor layer which is opposite to the insulating layer; and forming the rib portion by etching the first semiconductor layer until reaching the insulating layer using the second resist layer as a mask.

Abstract: Examples are disclosed that relate to pixel-shifting devices for increasing display resolution. An example pixel-shifting device comprises an outer frame, an inner frame coupled to the outer frame via a flexure, a path-shifting optical element mounted to the inner frame, and one or more piezoelectric actuators configured to drive motion of the inner frame.

Abstract: A laser scanner determines the direction and distance of one or more targets by emitting two substantially parallel beams and receiving respective return beams. Components for handling the received beams are affixed to a monolithic block to ensure fixed relative placement. The direction of the target is determined using an optical encoder to reduce the timing window for interpolation to a fraction of the time it takes for the scanner to make a full revolution. A PLL trained by recent segment timing further improves accuracy and precision. A detection algorithm adapts detection thresholds for the different signatures of return signals depending on the distance to the target. Distance calculations are also adjusted for thermal expansion of the scanner components by including a temperature-variant thermometer output signal in the distance calculation algorithm.

Abstract: A lens protection device includes a housing, a first and a second sliding cover. The housing includes an opening and a connecting portion. The first sliding cover includes a first cover plate, a first connecting shaft, and a first and a second magnet. One end of the first connecting shaft connects to the first cover plate and another end pivotally connects to the connecting portion. The first connecting shaft is rotated to move the first cover plate. The first and the second magnet are disposed at a front and a rear end of the first cover plate, respectively. The second sliding cover includes a second cover plate and a second connecting shaft. One end of the second connecting shaft connects to the second cover plate, and another end pivotally connects to the connecting portion. The second connecting shaft is rotated to move the second cover plate.

Abstract: The invention relates to a waveguide display element comprising a waveguide body and an in-coupling grating (21) arranged to the waveguide body. The in-coupling grating (21) is configured to couple incoming light into the waveguide body into two separate directions (26A, 26B) using opposite diffraction orders (IC:+1, IC:?1) for splitting the field of view of the incoming light. Further the in-coupling grating (21) is configured, typically by setting its period suitably short, such that said coupling takes place only at wavelengths below a threshold wavelength residing in the visible wavelength range. The invention also relates to a waveguide stack (51 A, 51 B, 51 C).

Abstract: Head-mounted display systems with power saving functionality are disclosed. The systems can include a frame configured to be supported on the head of the user. The systems can also include a head-mounted display disposed on the frame, one or more sensors, and processing electronics in communication with the display and the one or more sensors. In some implementations, the processing electronics can be configured to cause the system to reduce power of one or more components in response to at least in part on a determination that the frame is in a certain position (e.g., upside-down or on top of the head of the user). In some implementations, the processing electronics can be configured to cause the system to reduce power of one or more components in response to at least in part on a determination that the frame has been stationary for at least a threshold period of time.

Abstract: A laminate including: a first ply having a first surface and a second surface, where the first surface is an outer surface of the laminate; a second ply having a third surface facing the second surface and a fourth surface opposite the third surface, where the fourth surface is an inner surface of the laminate; an interlayer between the plies; and an enhanced p-polarized reflective coating positioned over at least a portion of a surface of the plies. When the laminate is contacted with radiation having p-polarized radiation at an angle of 60° relative to normal of the laminate, the laminate exhibits a LTA of at least 70% and a reflectivity of the p-polarized radiation of at least 10%. A display system and method of projecting an image in a heads-up display is also disclosed.

Abstract: Computer-implemented methods of operating an augmented reality device can involve capturing camera images, processing the camera images, and displaying virtual display images. The camera images can be captured automatically using a camera disposed within an augmented reality device worn by a user. The camera images can be processed automatically using a processor located within the augmented reality device. The virtual display images can be displayed automatically to the user within the augmented reality device while the user is looking through the augmented reality device and simultaneously viewing real objects through the augmented reality device. The virtual display images can be based on the processed camera images. Additional steps can include accepting a first user input, storing camera image(s) on a memory located within the augmented reality device based on the first input, accepting a second user input, and displaying stored image(s) to the user based on the second input.

Abstract: A head-up display device (10) includes one picture generation unit (20) that emits both first light (L1) and second light (L2) and includes an optical path adjuster (40) disposed in an optical path of at least one of the first light (L1) and the second light (L2) and having light transmission properties and substantially zero optical power. The optical path adjuster (40) gradually separates the first light (L1) and the second light (L2) as compared with a state before at least one of the first light (L1) and the second light (L2) enters the optical path adjuster (40) in such a manner that the first light (L1) creates a first virtual image (V1) in a position closer to an operator and the second light (L2) creates a second virtual image (V2) in a position farther from the operator than the first virtual image (V1).

Abstract: A display has an image generator; a partially transmissive mirror having a curved surface; a beam splitter to reflect incident light toward the curved surface; and an optical image relay that defines a path to relay light to a curved focal surface of a partially transmissive mirror, the curved focal surface is between a curved reflective surface of the partial mirror and the beam splitter. A prism has a folding surface in the optical path for light from the image generator, wherein an aperture stop for the relay lies within the prism. A first plano-aspheric lens, against the prism input surface, guides light from the image generator toward the folding surface; a second plano-aspheric lens, in optical contact against the prism output surface, directs light to the curved focal surface. The relay, curved mirror, and beam splitter form an exit pupil for viewing the scene with a 2D image superimposed.

Abstract: Systems and methods are described herein for controlling a smart glass display based on environmental conditions. The smart glass display may be configured for presenting a media asset. Further, the smart glass display is configured with a transparent display function that adjusts the presentation of the media asset based on the environmental conditions. The smart glass display may identify environmental information and determine a hazard based on the environmental information. Further, a smart glass display may observe the user's eye movement and may execute a specific function corresponding to the user's eye movement.

Abstract: Systems and methods for manipulation of the polarization state of light emitted by a laser projector to reduce the angle range of a scanning mirror articulated by a micro-electromechanical system MEMS to reduce power consumption are disclosed. A system includes a light source configured to emit laser light, a scanning mirror, and an angle expander disposed between the light source and the scanning mirror, the angle expander being configured to cause the laser light from the light source to be reflected at least once from the angle expander and at least twice from the scanning mirror.

Abstract: A display subsystem for a virtual image generation system for use by an end user comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a collimation element mounted to a distal end of the optical fiber for collimating light from the optical fiber. The virtual image generation system further comprises a mechanical drive assembly to which the optical fiber is mounted to the drive assembly. The mechanical drive assembly is configured for displacing the distal end of the optical fiber, along with the collimation element, in accordance with a scan pattern. The virtual image generation system further comprises an optical waveguide input apparatus configured for directing the collimated light from the collimation element down the planar waveguide apparatus, such that the planar waveguide apparatus displays image frames to the end user.

Abstract: There is provided a display system used for a head mounted display including a head mounted device having a lens for guiding image light to an eye of a user and configured to be mounted on a head of the user and a portable terminal having an imaging unit for photographing a front of a display surface and capable of being housed in the head mounted device. The display system includes a display control section configured to display a moving image on the display surface, an image information obtaining section configured to obtain image information photographed by the imaging unit, and a position information obtaining section configured to obtain position information of an optical axis of the lens on the display surface on the basis of position information of at least two reference positions whose relative positions with respect to the optical axis are determined in advance, the at least two reference positions being included in the image information.

Abstract: A display control device includes a first display control unit performing control so as to display a page, which is being displayed in a real space, in a first material as a presentation material used in a presentation by a presenter in a first position in a virtual reality space, a second display control unit performing control so as to display a second material in a second position which is different from the first position in the virtual reality space, and an operation input information acquisition unit acquiring first operation input information as operation input information which is input by a viewer experiencing the virtual reality space and which is about display of the second material, in which the second display control unit changes a display manner of the second material based on the first operation input information.

Abstract: A wearable device can include an inward-facing imaging system configured to acquire images of a user's periocular region. The wearable device can determine a relative position between the wearable device and the user's face based on the images acquired by the inward-facing imaging system. The relative position may be used to determine whether the user is wearing the wearable device, whether the wearable device fits the user, or whether an adjustment to a rendering location of virtual object should be made to compensate for a deviation of the wearable device from its normal resting position.

Abstract: An augmented reality or virtual reality display device is disclosed. A first input grating (6; 106; 306; 406; 506) is provided on a waveguide assembly to receive light from a first projector (2; 102; 202; 302; 402; 502) and to couple the light into the at least one waveguide. A second input grating (116; 316; 416; 516) is provided to receive light from a second projector (12; 112; 212; 312; 412; 512) and couple the light into the at least one waveguide. An output diffractive optical element couples light out of the at least one waveguide towards a notional viewing position. The first projector provides light to the first input diffractive optical element in a direction that is at a first angle to a waveguide normal vector, and the second projector is configured to provide light to the second input diffractive optical element in a direction that is at a second angle to the waveguide normal vector.

Abstract: An embodiment according to an aspect of the present disclosure provides a device for manufacturing a display lens, a method for manufacturing a display lens using the device, and a head-mounted display device including the display lens manufactured thereby. The device for manufacturing a display lens including a holographic optical element formed by recording a hologram on a photosensitive substrate, in which a substrate is coated with a photosensitive material, through irradiation of laser beams includes: a first laser light incidence unit configured to cause first laser light, converging along an irradiation direction, to be incident on one surface of the photosensitive substrate; and a second laser light incidence unit configured to cause second laser light, diverging at a plurality of points along an irradiation direction, to be incident on the other surface of the photosensitive substrate.

Abstract: Display backing components for head-mounted devices (HMDs) are described that reduce eddy currents in magnetic fields generated by a coil. A HMD may include a coil that is used to generate a magnetic field that may be used to track position of other devices with respect to the HMD. Display backing components, used to provide rigidity, are modified with holes or other gaps to interrupt the path of the eddy currents and reduce the interference with the magnetic field, thus improving the power efficiency of the coil and of the HMD. These modifications may be formed by casting, drilling, cutting or otherwise perforating the display backing during manufacture.

Abstract: A light guide plate includes: an optical glass, the optical glass having a refractive index nd of at least 1.75 or of at least 1.80 and including Nb2O5 in an amount of at least 15 mol % and P2O5 in an amount of at least 19 mol %, the light guide plate having an internal transmission of at least 0.80 or of at least 0.90, measured at a wavelength of 440 nm and a sample thickness of 10 mm.

Abstract: The disclosed head-mounted device may include a frame, a temple, at least one cable communicatively coupled to the temple and the frame, and a hinge assembly coupling the temple to the frame. The hinge assembly may include (1) a stationary member coupled to the frame, (2) a rotary member coupled to the temple and rotatable with respect to the stationary member about a rotational axis, (3) a wiring passage defined within the stationary member and the rotary member, the wiring passage surrounding and extending along the rotational axis and configured to accommodate at least one cable passing therethrough, and (4) a biasing member positioned to apply a biasing force to hold the rotary member in one of a plurality of selected orientations relative to the stationary member. Various other devices, assemblies, systems, and methods are also disclosed.

Abstract: Systems of the present disclosure can provide a head-mountable device that distributes forces along the user's head. A head-mountable device can include head securement element with a support element to engage the head of the user. The support element can be coupled to the frame or light seal module of the head-mountable device. The support element can be attachable or deployable from the head-mountable device. A head-mountable device can also distribute forces with a support portion extending from a band.

Abstract: AR glasses are provided with left and right temples extending well behind the ears of the wearer to establish a center of gravity of the glasses that is approximately vertically above the front portion of the ears of the wearer. Rear segments the temples may be detachably engaged with the temples and may hold one or more electrical components.

Abstract: A head-mounted-display includes an electronic display emitting image light and a varifocal block receiving the image light and outputting the image light in at least one of the focal planes of the varifocal block. The varifocal block includes a back optical element, a front optical element, and an actuator assembly coupled to the back and front optical element. The front optical element is positioned closer to an exit pupil than the back optical element, and separated from the back optical element by an adjustable distance, the magnitude of which determines in which of the focal planes the image light is presented. The actuator assembly simultaneously adjusts positions of the back optical element and the front optical element to vary the adjustable distance between the back optical element and the front optical element in accordance with an estimated vergence depth of the user.

Abstract: The present invention relates to a lens for eye-tracking applications. The lens comprises a first protective layer, arranged to face towards the eye to be tracked when the lens is used for eye-tracking. It also comprises at least one light source, at least partly arranged in the first protective layer, arranged to emit a first light from the first protective layer in a direction towards the eye. Moreover, it comprises at least one image capturing device, at least partly arranged in the first protective layer, arranged to receive the first light within the first protective layer. The lens further comprises an absorptive layer, arranged on the far side of the first protective layer seen from the eye to be tracked when the lens is used for eye-tracking, adapted to be absorptive for wavelengths of the majority of the first light.

Abstract: In various embodiments, laser delivery systems feature one or more optical elements for receiving a radiation beam and altering the spatial power distribution thereof, a lens manipulation system for changing a position of at least one optical element within the path of the radiation beam, and a controller for controlling the lens manipulation system to achieve a target altered spatial power distribution on a workpiece.

Abstract: An optical system, in particular for microlithography, includes a beam splitter, which has at least one light entry surface. The beam splitter is arranged in the optical system so that the angles of incidence with respect to the surface normal which occur at the light entry surface during operation of the optical system lie in the range of 45°±5°. The beam splitter is produced in [110] the crystal cut.

Abstract: A method for triggering switches in a defined order comprises providing two or more PCSS devices and a compatible optical trigger; projecting a beam from the optical trigger; splitting the optical beam into two or more paths toward the two or more PCSS devices, wherein each of the two or more paths has a different length such that each of the two or more PCSS devices are triggered with defined time differentials. Each of the defined path lengths may be determined with the speed of light from the optical trigger along the two or more paths in order to achieve the desired switch-timing differential. The optical path consists of at least one of an optical fiber, a mirror arrangement, and a lens arrangement. Path lengths may be controlled by different fiber lengths, and transmitting a beam through a solid having a higher index of refraction than other beam path(s).

Abstract: The technology relates to a long-range optical device for a firearm with an objective and an eyepiece, through which an observation beam path is formed for aiming at a target, the long-range optical device further comprising an opto-electronic display device, wherein the display device comprises an LCoS display for displaying variable data or a target mark, wherein a display beam path of the display device runs at least partly in the observation beam path for displaying the remote object.

Abstract: A light emitting diode display panel may comprise a substrate, a plurality of light emitting diodes located over the substrate, and an optical assembly located over the plurality of light emitting diodes. The optical assembly may include a lens array and a diffuser. An inner surface of the lens array may define a plurality of inner curves.

Abstract: Provided is a beam deflector including a first sub deflector configured to deflect light of a first wavelength band in a first direction and a second direction that intersects the first direction, and convert a polarization direction of the light of the first wavelength band, and a second sub deflector configured to deflect light of a second wavelength band, that is different from the first wavelength band in the first direction and the second direction, and convert a polarization direction of the light of the second wavelength band, wherein the first sub deflector and the second sub deflector are sequentially provided such that the light of the first wavelength band and the light of the second wavelength band sequentially pass through the first sub deflector and the second sub deflector.

Abstract: A multiview backlight and display employ diffusion of directional light beams to provide an image of color regions of a color-tailored multibeam element having a size comparable to a size of the color-tailored multibeam element. The multiview backlight includes an array of color-tailored multibeam elements configured to provide the directional light beams and an optical diffuser configured to spread out directional light beams to provide the color region image. The multiview display includes an array of the color-tailored multibeam elements and the optical diffuser. The multiview display further includes an array of light valves configured to modulate the directional light beams as a multiview image.

Abstract: An optical film having a first surface, an opposing second surface, and a thickness normal to the first and second surfaces is cut. Cutting the film forms a channel at least partially through the thickness of the film. A light control material is printed proximate to a surface of the film. The ink traverses through the channel by capillary motion.

Abstract: This specification relates to a decoration member including: a substrate; a pattern layer comprising two or more unit pattern provided on one surface of the substrate; and an inorganic layer formed on the pattern layer, in which the inorganic layer includes a region in which a thickness t(x) of the inorganic layer formed on each unit pattern increases in a direction x in which the unit patterns are arranged.

Abstract: A multicolor static multiview display and method of multicolor static multiview display operation provide a color static multiview image using diffractive gratings to diffractively scatter light from guided light beams having a selectable color and different radial directions. The multicolor static multiview display includes a light guide configured to guide plurality of guided light beams and a multicolor light source configured to provide the guided light beam plurality having the selectable color and the different radial directions. The multicolor static multiview display further includes a plurality of diffraction gratings configured to provide from a portion of the guided light beams directional light beams having a color, intensities, and principal angular directions corresponding to color view pixels of the color static multiview image.

Abstract: An image light guide for conveying a virtual image has a waveguide that conveys image-bearing light, formed as a flat plate having an in-coupling diffractive optic with a first grating vector diffracting an image-bearing light beam into the waveguide and directing diffracted light. An out-coupling diffractive optic is formed as a plurality of overlapping diffraction gratings including a first grating pattern having first grating vector k1 and a second grating pattern having a second grating vector k2 for expanding and ejecting the expanded image bearing beams from the waveguide into an expanded eyebox within which the virtual image can be seen.

Abstract: A method of fabricating a blazed diffraction grating comprises providing a master template substrate and imprinting periodically repeating lines on the master template substrate in a plurality of master template regions. The periodically repeating lines in different ones of the master template regions extend in different directions. The method additionally comprises using at least one of the master template regions as a master template to imprint at least one blazed diffraction grating pattern on a grating substrate.

Abstract: An optical filter includes a near-infrared absorbing layer including a first material, the first material being configured to absorb light in a first wavelength spectrum belonging to a near-infrared wavelength spectrum. The optical filter includes a compensation layer adjacent to the near-infrared absorbing layer, the compensation layer including a second material different from the first material. The optical filter includes a metamaterial structure spaced apart from the near-infrared absorbing layer via the compensation layer, the metamaterial structure being configured to absorb or reflect light in a second wavelength spectrum at least partially overlapped with the first wavelength spectrum.

Abstract: A thin-film interference filter has a thin-film interference multi-layer stack composed of individual thin-film layers arranged in groups to form a plurality of repeat unit blocks. The thin-film interference filter is flexible enough to be bendable to a radius of curvature of 250 mm or even less without permanently damaging the thin-film interference filter. The thin-film interference filter may have a second thin-film interference multi-layer stack composed of individual thin-film layers arranged in repeat unit blocks may have a different optical transmission spectrum. At least one interlayer between the first thin-film interference multi-layer stack and the second thin-film interference multi-layer stack may block a range of wavelengths of infrared, visible, or ultraviolet light. A defect layer of a different optical thickness than neighboring thin-film layers forming the repeat unit blocks, thereby creating a Fabry Perot resonance cavity.