Abstract: The beam distributor includes a housing, at least one beam entrance, two or more beam exits, a motor, and a beam turning part fixed to a rotary axis member of the motor and changing a direction of a beam input to the inside of the housing through the beam entrance so as to guide the input beam to the beam exit. A rotary axis of the motor is arranged parallel to an optical axis of the beam so as to input the beam to the beam turning part at a constant angle independently of a rotational angle about the rotary axis of the motor. The beam exit is arranged in a direction to which the direction of the beam is changed by the beam turning part in response to rotation of the rotary axis member. A storage stores an angular information recorded in advance about the rotary axis.

Abstract: The present invention discloses a fiber optic connector comprising a housing, a spring, a ferrule assembly and a crimping seat. Before being inserted into the housing, the ferrule assembly is pre-assembled into the crimping seat in a manner of being movable relative to the crimping seat. The spring is pre-assembled into the housing before the ferrule assembly is inserted into the housing. After the pre-assembled ferrule assembly and crimping seat are inserted into the housing, the crimping seat is snap-fitted in the housing, and the spring pushes the ferrule assembly, so that the ferrule assembly is capable of being moved against the spring relative to the crimping seat. Before inserted into a housing of the fiber optic connector, some components may be pre-assembled together to form an integral assembly having a size less than that of a housing of the fiber optic connector. Accordingly, the integral assembly may be smoothly pulled through a small long pipe.

Abstract: An adapter with novel alignment features engages alignment features on a plug, providing general alignment of the ferrule holders and ferrules in the plug. After the plug engages the adapter, the ferrule holders engage a second set of alignment features in the adapter to provide fine alignment for the ferrules.

Abstract: A fiber optic drop terminal assembly includes a housing, a spool and a fiber optic distribution cable. The housing has a first exterior surface and an oppositely disposed second exterior surface. A plurality of ruggedized adapters is mounted on the first exterior surface of the housing. The ruggedized adapters include a first port accessible from outside the housing and a second port accessible from inside the housing. The spool is engaged with the second exterior surface and includes a drum portion. The fiber distribution cable is coiled around the drum portion. The distribution cable includes a first end and an oppositely disposed second end. The second end is disposed inside the housing.

Abstract: Examples disclosed herein relate to a baffle with an integrated optical connector. One example includes a component to attach to an interconnect device where the component allows a heat exchanging medium to flow through an opening in itself. This example can include a sot in the component for integration of an optical connector into the component. The slot can also be used to secure the optical connector to the interconnect device and to align the optical connector to enable communication with the interconnect device.

Abstract: A high density fiber enclosure system includes a chassis, cassette trays, an optional unification clip, cassettes, and an optional trunk cable management system. The chassis, cassette trays, and cassettes are configured such that individual cassettes may be installed, removed, and otherwise positioned for easy access by a user. The unification clip allows two adjacent cassette trays to be connected to one other such that cassette trays move as one unit. The trunk cable management system is designed to organize trunk cables and trunk cable furcation legs as well as relieve strain on the trunk cables and trunk cable furcation legs.

Abstract: An optical fiber cable includes: a cable main body including a core that includes optical fibers, at least a pair of tension members that face each other with the core interposed therebetween, and an inner sheath that covers the core and the tension members; a cylindrical outer sheath that accommodates the cable main body; a reinforcing sheet provided between the cable main body and the outer sheath; and a rip cord provided between the reinforcing sheet and the cable main body. The reinforcing sheet surrounds an entire circumference of the cable main body, the reinforcing sheet includes an overlapping portion in which portions of the reinforcing sheet overlap each other in a portion in a circumferential direction of the cable main body, and the reinforcing sheet is formed of a metal.

Abstract: A camera lens module includes an image sensor and a lens assembly. The image sensor includes a photosensitive chip defining a photosensitive path, wherein the lens assembly is coupled to the image sensor along the photosensitive path of the photosensitive chip. The lens assembly includes at least one optical lens module and an aperture member coupled at the optical lens module, wherein the optical lens module includes a lens barrel and at least an optical lens supported within the lens barrel. A relative position of the lens assembly with respect to the image sensor is adjustable for calibration and the relative position of the optical lens module is permanently fixed after calibration.

Abstract: An optical image capturing system including an imaging lens assembly having at least three lens elements for capturing image is provided. The optical image capturing system includes at least three pieces of lens elements; a first image plane for visible ray; a second image plane for infrared ray; and an image sensing device located between the first image plane the second image plane. The distance on the optical axis can be minimized by the design of said optical lens elements to improve the imaging quality of both visible ray and infrared ray in compact cameras.

Abstract: An optical member driving module is provided, including a moving mechanism, a base, a suspension wire, and an electromagnetic driving mechanism for driving the moving mechanism to move relative to the base. The moving mechanism includes an optical member holder, and the base has a first surface, a second surface, and an opening. The second surface faces the optical member holder and is opposite to the first surface. The opening extends from the first surface to the second surface. The suspension wire extends through the opening, and the opposite ends of the suspension wire are respectively affixed to the first surface and the moving mechanism.

Abstract: An imaging system includes a metering structure and a plurality of foldable members disposed around a periphery of the metering structure. Each foldable member in the plurality of foldable members includes an arm comprising a strain deployable composite and a reflector disposed on the arm. The arm in a respective foldable member in the plurality of foldable members is configured to hold the respective foldable member toward the metering structure in a first state and to hold the respective foldable member away from the metering structure in a second state such that the reflector of the respective foldable member forms part of a sparse aperture in the second state.

Abstract: An image pickup element performs photoelectric conversion on an optical image formed by an interchangeable lens. A ranging unit measures a distance to each object from signals for detecting a phase difference from the image pickup element. A body microcomputer calculates a de-focusing amount of each object, generates a focus guide for each object with a size or a (detailed or simple) content according to the de-focusing amount, and displays the focus guide on a display unit in a superimposed manner on an image captured by the image pickup element. A user adjusts the focus of the interchangeable lens using a focus ring by referring to the screen of the display unit.

Abstract: An annular optical element includes a first side surface, a second side surface, an outer annular surface and an inner annular surface. The outer annular surface connects the first side surface and the second side surface, and surrounds a central axis of the annular optical element. The inner annular surface connects the first side surface and the second side surface, surrounds the central axis, and is closer to the central axis than the outer annular surface is to the central axis. The inner annular surface includes a plurality of protrusion circles surrounding the central axis and arranged along a direction from the first side surface towards the second side surface. Each of the protrusion circles includes a plurality of protrusion structures and a plurality of separation structures, and the protrusion structures and the separation structures are alternately arranged to surround the central axis.

Abstract: A photographing optical lens system includes at least six lens elements, wherein the photographing optical lens system includes at least one cemented lens group cemented by two of the lens elements adjacent to each other. The at least one cemented lens group includes, in order from an object side to an image side, a first cemented lens element, a cemented layer and a second cemented lens element. The first cemented lens element has a cemented image-side surface being aspheric. The cemented layer has a cemented object-side surface and a cemented image-side surface. The second cemented lens element has a cemented object-side surface being aspheric. An aspheric coefficient of the cemented image-side surface of the first cemented lens element is different from an aspheric coefficient of the cemented object-side surface of the second cemented lens element. One of the lens elements closest to an imaged object has positive refractive power.

Abstract: An optical image capturing system including an imaging lens assembly having at least three lens elements for capturing image is provided. The optical image capturing system includes at least three pieces of lens elements; a first image plane for visible ray; a second image plane for infrared ray; and an image sensing device located between the first image plane the second image plane. The distance on the optical axis can be minimized by the design of said optical lens elements to improve the imaging quality of both visible ray and infrared ray in compact cameras.

Abstract: Provided are external lens devices for a dual lens camera smart device. Generally, the external lens device comprises a lens holder, a plurality of lenses held within the lens holder and means for securing the lens holder over the dual lens camera smart device. Securing the lens holder to the dual lens camera may be effected by direct engagement of the lens holder with the dual lens camera or by a clip which when slid over the smart device positions the lens holder over the dual lens camera. Also provided are handheld camera systems with the dual lens camera smart device and the external lens device removably secured over the camera.

Abstract: An optical imaging module includes six lens elements, the six lens elements being, 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 and a sixth lens element. The first lens element has negative refractive power. The second lens element has an image-side surface being concave. The third lens element has an image-side surface being convex. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an object-side surface being concave and an image-side surface being convex. The sixth lens element has an image-side surface being concave, wherein an object-side surface and the image-side surface of the sixth lens element are both aspheric, and the image-side surface of the sixth lens element includes at least one inflection point.

Abstract: A photographing optical lens system includes, 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. The second lens element has positive refractive power. The eighth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the eighth lens element has at least one convex shape in an off-axis region thereof, and both an object-side surface and the image-side surface thereof are aspheric. The photographing optical lens system has a total of eight lens elements. An air gap in a paraxial region is located between every two lens elements of the photographing optical lens system that are adjacent to each other.

Abstract: The present invention provides a projection optical system including a first concave reflecting surface, a first convex reflecting surface, a second concave reflecting surface, and a third concave reflecting surface, wherein the first concave reflecting surface, the first convex reflecting surface, the second concave reflecting surface, and the third concave reflecting surface are arranged such that light from an object plane forms an image on an image plane by being reflected by the first concave reflecting surface, the first convex reflecting surface, the second concave reflecting surface, the first convex reflecting surface, and the third concave reflecting surface in an order named.

Abstract: A lighting unit (10) configured to illuminate a surface (32) having a proximal portion (34) and a distal portion (36) in relation to the lighting unit. The lighting unit includes a light source (12) configured to emit a light beam (28), and an optic (40) positioned between the light source and the surface to modify the emitted light beam to have a largely uniform vertical illumination distribution along the surface. The input surface (39) of the optic faces the light source and has a convex lens portion (41) that directs a portion of the emitted light beam at the distal portion of the surface, and a concave lens portion (43) that directs a portion of the emitted light beam at the proximal portion of the surface.

Abstract: To enable observation of the operating site to be continued more easily in the case in which the picture of the operating site is no longer displayed normally. Provided is a surgical microscope device including: a microscope unit that images an observation target, and outputs a picture signal; a support unit that supports the microscope unit, and is configured as a balance arm; and an auxiliary observation device that is attachable to the microscope unit or the support unit, and is configured to enable observation of an observation range provided by the microscope unit.

Abstract: A microscope system includes: a stage for placing a sample and movable in a direction; a position detecting unit that detects the stage position; an imaging unit that captures an image of the sample; an image generating unit that combines the acquired image based on the detected position; a position searching unit that searches for the position of an image on the generated combined image as the stage position; a switching detecting unit that detects switching of an optical member; and a control unit that corrects, when switching is detected, the stage position based on a difference between the stage position detected by the position detecting unit and the stage position searched by the position searching unit so that the stage position detected by the position detecting unit coincides with the stage position searched by the position searching unit.

Abstract: Provided is a microscope system including: a stage on which a sample is placed and that is movable in a direction orthogonal to an observation optical axis; a detecting unit that detects a position of the stage; an imaging unit that acquires an image of the sample on the stage; an image generating unit that generates an overlapped image by overlapping the acquired image with the position of the stage; a searching unit that searches for a position of the acquired image in the generated overlapped image; and a control unit that performs control including causing the image generating unit to stop the overlapping process and causing the searching unit to execute the position search when detection by the detecting unit fails, and causing the image generating unit to resume the overlapping process starting from a search position of the searching unit when the search is successful.

Abstract: A light-enhancement device includes a wavelength conversion member and a wavelength controlling element. The wavelength conversion member includes a light-transmissive substrate and wavelength conversion material which is disposed within the light-transmissive substrate for converting a portion of light with a first wavelength into another light with a second wavelength. The wavelength controlling element is disposed on a surface of the light-transmissive substrate for reflecting another portion of the light with the first wavelength into the light-transmissive substrate and enabling the portion of the light with the second wavelength to pass through the wavelength controlling element. A roughness of the surface of the light-transmissive substrate facing towards the wavelength controlling element is configured to be 0-1 ?m.

Abstract: A method for correcting deformations of the surface of an object equipped with a device for correcting deformations, the device including a piezoelectric layer including first and second surfaces, a first plurality of electrical tracks arranged on the first surface, a second plurality of electrical tracks arranged on the second surface, the tracks of the first plurality forming a plurality of lines and the tracks of the second plurality forming a plurality of columns, each column of the plurality of columns being perpendicular to the lines of the plurality of lines, the crossing of a line and a column forming a pixel. The method includes measuring the deformations of the surface; identifying the pixels for correcting the deformations and applying, for each identified pixel, with the line and the column corresponding to the pixel, an electric field greater than the coercive field of the piezoelectric material of the piezoelectric layer.

Abstract: Systems, devices, and methods for transparent displays that are well-suited for use in wearable heads-up displays are described. Such transparent displays include one or more scanning projector(s) that is/are mounted on or proximate the lens portion(s) thereof, directly in the field of view of the user. Each scanning projector includes a respective light source that sequentially generates pixels or other discrete portions of an image and a respective dynamic optical beam-steerer that controllably steers the modulated light directly towards select regions of the eye of the user. Successive portions of the image are generated in rapid succession until the entire image is displayed to the user by projection directly onto the eye of the user from one or more point(s) within the user's field of view.

Abstract: A housing for an optical element has a first holding surface contact holding a first surface of an optical element and a second holding surface contact holding a ridge line separated from the first surface of the optical element. A first pressing member presses the optical element toward the first holding surface, and a second pressing member presses the optical element toward the second holding surface. An intersection angle obtained by extrapolating and extending the first and second holding surfaces is an acute angle, and a first pressing position at which the first pressing member presses on the optical element is closer to the second holding surface than to a center of the optical element. A second pressing position at which the second pressing member presses on the optical element is farther from the first holding surface than from the center of the optical element.

Abstract: An image forming apparatus includes a control unit: starting up a rotary polygon mirror based on a first signal output by a driving unit thereof; causing a light source to emit a laser-beam while controlling a rotational speed of the rotary polygon mirror based on the first signal to acquire a second signal output from a detecting unit of the laser-beam; turning off the light source after acquiring a phase relation between the first and second signals; causing a charging unit to charge a photosensitive member; making the laser-beam to enter onto the detecting unit without exposing the photosensitive member based on the phase relation in response to the rotational speed reaching a target speed; controlling the rotational speed based on the second signal in response to the laser-beam being entered; and starting image formation in response to the rotational speed converging within a predetermined range including the target speed.

Abstract: A gaze detection system includes a head mounted display including a gaze detection device detecting a gaze of a user; and a tracking unit that determines a gaze point of the user in the three-dimensional image on the basis of the gaze directions of the right and left eyes, in which the first detection unit calculates a right eye gaze vector indicating the gaze direction of the right eye, and the second detection unit calculates a left eye gaze vector indicating the gaze direction of the left eye, wherein a display unit displays a three-dimensional image consisting of a plurality of layers in a depth direction, and a tracking unit identifies the layer that the user is gazing at by selecting the layer having a shortest distance between intersection points of the right eye gaze vector and the left eye gaze vector with each layer.

Abstract: A see-through type display apparatus includes a see-through type optical system configured to transmit a first image via a first-path light, which is light traveling on a first path, to an ocular organ of a user, and a second image via a second-path light, which is light traveling on a second path, to the ocular organ of the user; and an incident light-dependent lens unit provided between the see-through type optical system and the ocular organ of the user and having different refractive powers according to characteristics of incident light, where the incident light-dependent lens unit has a positive first refractive power with respect to the first-path light and has a second refractive power different from the first refractive power with respect to the second-path light.

Abstract: Systems, devices, and methods for preventing eyebox degradation in wearable heads-up displays (“WHUDs”) are described. A WHUD may provide an eyebox defined by multiple spatially-separated exit pupils, where the size of the eyebox is influenced by the spacing between the exit pupils. A larger eyebox is achieved with larger spacing between the exit pupils but a larger spacing between exit pupils is susceptible to the formation of gaps or blind spots in the eyebox (eyebox degradation) if bright environmental light causes the user's pupil to constrict to a size that is smaller than the spacing between the exit pupils. A material of variable chromism is included in the user's field of view to reduce the perceived brightness of environmental light and thereby prevent the user's pupil from constricting to a size smaller than the spacing between the exit pupils.

Abstract: Systems, devices, and methods for preventing eyebox degradation in wearable heads-up displays (“WHUDs”) are described. A WHUD may provide an eyebox defined by multiple spatially-separated exit pupils, where the size of the eyebox is influenced by the spacing between the exit pupils. A larger eyebox is achieved with larger spacing between the exit pupils but a larger spacing between exit pupils is susceptible to the formation of gaps or blind spots in the eyebox (eyebox degradation) if bright environmental light causes the user's pupil to constrict to a size that is smaller than the spacing between the exit pupils. A material of variable chromism is included in the user's field of view to reduce the perceived brightness of environmental light and thereby prevent the user's pupil from constricting to a size smaller than the spacing between the exit pupils.

Abstract: Systems, articles, and methods that integrate photopolymer film with eyeglass lenses are described. One or more hologram(s) may be recorded into/onto the photopolymer film to enable the lens to be used as a transparent holographic combiner in a wearable heads-up display employing an image source, such as a microdisplay or a scanning laser projector. The methods of integrating photopolymer film with eyeglass lenses include: positioning photopolymer film in a lens mold and casting the lens around the photopolymer film; sandwiching photopolymer film in between two portions of a lens; applying photopolymer film to a concave surface of a lens; and/or affixing a planar carrier (with photopolymer film thereon) to two points across a length of a concave surface of a lens. Respective lenses manufactured/adapted by each of these processes are also described.

Abstract: Systems, articles, and methods that integrate photopolymer film with eyeglass lenses are described. One or more hologram(s) may be recorded into/onto the photopolymer film to enable the lens to be used as a transparent holographic combiner in a wearable heads-up display employing an image source, such as a microdisplay or a scanning laser projector. The methods of integrating photopolymer film with eyeglass lenses include: positioning photopolymer film in a lens mold and casting the lens around the photopolymer film; sandwiching photopolymer film in between two portions of a lens; applying photopolymer film to a concave surface of a lens; and/or affixing a planar carrier (with photopolymer film thereon) to two points across a length of a concave surface of a lens. Respective lenses manufactured/adapted by each of these processes are also described.

Abstract: A wearable electronic apparatus is provided. The wearable electronic apparatus includes: a head-mounted headphone having two sound generators and an elastic headband connected to the two sound generators; a display assembly having two end parts and a central part located between the two end parts; and two connecting mechanisms. Each of the two connecting mechanisms is connected to one of the two sound generators corresponding to the connecting mechanism and connected to one of the two end parts of the display assembly corresponding to the connecting mechanism, so that the end part of the display assembly is configured to deflect with respect to the sound generator.

Abstract: A mirror is used to form a beam of laser-radiation having a uniform intensity distribution from a beam of laser-radiation having a non-uniform intensity distribution. The mirror has a reflective surface that has a compound shape, which is two inclined surfaces joined by a rounded apex. The compound-mirror is achromatic and can form a uniform intensity distribution from a polychromatic beam of laser-radiation. The uniform intensity distribution may be an isotropic distribution or a flat-top distribution in a plane. The non-uniform intensity distribution may be a Gaussian distribution from a laser source.

Abstract: Disclosed herein are techniques for dynamically forming an optical component that automatically aligns with and changes positions with a scanning light beam to modify the wave front of the scanning light beam, such as collimating the scanning light beam. More specifically, a patterning beam that aligns with the scanning light beam may be scanned together with the scanning light beam to form the self-aligning and travelling optical component in an electro-optic material layer that is connected in serial with a photoconductive material layer to a voltage source, where the patterning beam optically modulates the impedance of the photoconductive material layer and therefore an electric field within the electro-optic material layer, the modulated electric field causing localized changes of refractive index in the electro-optic material layer to form the self-aligning and travelling optical component.

Abstract: Embodiments of the present application provide a 3D display apparatus and a method for driving the same. The apparatus includes: a backlight assembly forming bright stripes and dark stripes arranged alternately; a liquid crystal display panel displaying a left eye image of a 3D display signal by a first set of pixel units and display a right eye image by a second set of pixel units; a location tracking unit acquiring a location of a viewer; and a control unit adjusting position of the bright and dark stripes and deflection of liquid crystal of the liquid crystal display panel such that a light emitted from the bright stripes is allowed to pass through corresponding first set to be received by left eye and to pass through corresponding second set to be received by right eye respectively. Embodiments are used in manufacturing of a 3D display apparatus.

Abstract: The present invention relates generally to stereoscopic displays, and more particularly, but not exclusively, to stereoscopic displays with addressable focus cues.

Abstract: A three dimensional (3D) display panel and a display device are provided. The 3D display panel includes a two dimensional (2D) display panel, an image separation device, a polarizing structure, an image isolation structure, a lens assembly and a shielding component. The 2D display panel includes a plurality of pixels arranged in an array; the image separation device is configured to allow each pixel to be separated into two adjacent image pixels; the polarizing structure is configured to allow two adjacent image pixels separated from the same pixel to respectively form an image pixel of a left-eye image and an image pixel of a right-eye image; the image isolation structure is configured to allow the left-eye image and the right-eye image to produce parallax; the lens assembly is configured to form 3D image pairs; and the shielding component is configured to separate the left-eye image and the right-eye image.

Abstract: A 3D display device and a driving method thereof are disclosed. The 3D display device includes a backlight module, a liquid crystal display (LCD) panel and a control module; the backlight module includes a light guide plate (LGP) and a plurality of light sources; light emitted by the plurality of light sources is at least partially incident into the LGP; a plurality of grating pixels are disposed on a surface at a light-existing side of the LGP; the LCD panel includes a plurality of light-adjusting pixels; and the control module is connected with the backlight module and the LCD panel, and configured to drive the plurality of light sources to be lit sequentially or simultaneously within a time period of one frame and adjust a gray scale of each light-adjusting pixel in the LCD panel in a time period of lighting each light source.

Abstract: A display module is disclosed. The display module includes a display panel and a liquid crystal lens. The liquid crystal lens includes a liquid crystal layer; the liquid crystal lens is on a display side of the display panel and configured to gather, in a horizontal direction, light rays exiting from the display panel together to at least one observation position, which includes a primary observation position corresponding to a center of the display panel and subsidiary observation positions on both sides of the primary observation position. Also disclosed are a display device including the display module and a control method for the display module.

Abstract: The present application discloses a 3D imaging method and apparatus, which divide a source 3D image light into two polarized light beams carrying image information through a birefringence effect, adjust optical paths of the two polarized light beams obtained through birefringence, and control the two polarized light beams to be alternately irradiated, thereby achieving 3D imaging; since the implementation of the above imaging method only requires one imaging apparatus having corresponding functions, the present application can simplify the system structure and reduce the system cost relative to a conventional 3D projection technology that requires two imaging devices; moreover, a viewer can directly see, with no need to wear corresponding 3D glasses, a 3D image due to the parallax caused by alternate irradiation of two polarized light beams carrying image information out of a projection device. As a result, the investment in configuring 3D glasses can be saved and the system cost is further reduced.

Abstract: A system for selectively controlling visibility of information in a work environment is provided. The system includes one or more polarized emissive screens located within the work environment. The screens have a first direction of polarization. Information displayed on the screens is visible from inside the work environment. The work environment includes at least one window which permits viewing of the polarized emissive screens from outside of the work environment. A polarizing filter having a second direction of polarization arranged at an angle to the first direction of polarization is positioned proximate to the window. From outside the work environment, the inside of the environment can be seen through the window, but with an altered view of the information on the displays.

Abstract: An angle-stable, miniaturized and integrate-able imaging system based on plasmon resonances or dielectric resonances for multispectral imaging maintaining full spatial resolution of the image sensor. Active tunability of the filter allows color recording, estimation of unknown spectra and determination of spectral singularities, for example laser lines, with the use of a conventional B/W camera. The system is characterized by high angular acceptance, cost-efficient fabrication and ease-of-use. This system can be used in conjunction with other commercial multispectral imaging systems such as RGB cameras to further enhance the spectral resolution. It can be adapted to different spectral ranges, depending on the application.

Abstract: A collimation lens and an optical module of the collimation lens. The collimation lens includes a front convex aspheric lens, a first polarizing filter, a Faraday rotation (FR) crystal, a second polarizing filter, and a rear convex aspheric lens. The front convex aspheric lens is coupled to a first end face of the collimation lens, and the rear convex aspheric lens is coupled to a second end face of the collimation lens. The first polarizing filter is coupled between the front convex aspheric lens and the FR crystal, and the second polarizing filter is coupled between the FR crystal and the rear convex aspheric lens.

Abstract: A spectral feature selection apparatus includes a dispersive optical element arranged to interact with a pulsed light beam; three or more refractive optical elements arranged in a path of the pulsed light beam between the dispersive optical element and a pulsed optical source; and one or more actuation systems, each actuation system associated with a refractive optical element and configured to rotate the associated refractive optical element to thereby adjust a spectral feature of the pulsed light beam. At least one of the actuation systems is a rapid actuation system that includes a rapid actuator configured to rotate its associated refractive optical element about a rotation axis. The rapid actuator includes a rotary stepper motor having a rotation shaft that rotates about a shaft axis that is parallel with the rotation axis of the associated refractive optical element.

Abstract: An inflatable eyeglass comprises a lens frame and two temples respectively pivoted to two sides of the lens frame. The lens frame, the temples or a soft pad at the temples is formed with a hollow chamber inside, which is filled with a gas. Therefore, the inflatable eyeglass can float on water, and the whole eyeglass is supported by the gas in the hollow chamber, effectively lightening the weight of the inflatable eyeglass to make the user feel comfortable while wearing the inflatable eyeglass.

Abstract: A nose pad for eyeglass comprises a main body which is set at the inner side of the eyeglass frame to correspond to human's nose. The main body is a hollow body and filled with a gas. Accordingly, the nose pad has the function of floating on the water. Furthermore, the hollow nose pad is supported on the user's nose to effectively decrease the weight pressed on the bridge of the user's nose, achieving the comfortable effect.

Abstract: A method for determining a pair of ophthalmic lenses adapted to a wearer, the method including: a wearer data providing, during which wearer data including at least an indication of the distortion dominant eye of the wearer and an indication of the prescription of the wearer are provided; an ophthalmic lenses determining, during which a pair of ophthalmic lenses adapted to the wearer is determined based at least on the wearer data.