Abstract: A window assembly comprises a plurality of dynamic electrochromic zones formed on a single transparent substrate in which at least two electrochromic zones are independently controllable. In one exemplary embodiment, the window assembly comprises an Insulated Glass Unit (IGU), and at least one transparent substrate comprises a lite. In another exemplary embodiment, the IGU comprises at least two lites in which at least one lite comprises a plurality of independently controllable dynamic zones.

Abstract: An imaging lens consists of a front group having positive refractive power as a whole and a rear group in this order from an object side. The front group consists of three positive lenses, a negative lens with its concave surface facing an image side, a positive lens with its convex surface facing the object side, a negative lens with its concave surface facing the image side, a stop, a negative lens with its concave surface facing the object side and plural positive lenses in this order from the object side. The rear group has positive refractive power and consists of a positive lens and a negative lens in this order from the object side.

Abstract: An imaging lens consists of a front group having a positive refractive power, a stop, and a rear group having a positive refractive power. The front group is composed of a front group negative lens group constituted by two or more negative lenses and a front group positive lens group constituted by a plurality of lenses with a positive lens being disposed on the most object side to have a positive refractive power, in order from the object side. The rear group includes at least one negative lens. When the Abbe number of the most object side positive lens in the front group positive lens group with respect to the d-line is taken as ?p, the imaging lens satisfies a conditional expression (1): ?p<30.

Abstract: A system and method for determining an objective quality metric for image data collected by a wavefront aberrometer. The method may include quantifying a plurality of characteristics of the image data and calculating the objective quality metric based on the quantified characteristics of the image data. The objective quality metric can be a weighted sum of the quantified characteristics of the image data. The weightings for the weighted sum can be determined based on subjective quality metrics assigned to a set of training image data by a human expert.

Abstract: A zoom lens consists of five lens groups including, in order from the object side, positive, negative, positive, positive, and positive lens groups. During magnification change, the first and fifth lens groups are fixed relative to the image plane, and the second, third, and fourth lens groups are moved to change distances therebetween. During magnification change from the wide-angle end to the telephoto end, the second lens group is moved from the object side toward the image plane side, and the fourth lens group is moved from the image plane side toward the object side. The fifth lens group includes at least two negative lenses, and satisfies the condition expression (1) below: 1.90<LABnd??(1).

Abstract: An apparatus is described that selectively absorbs electromagnetic radiation. The apparatus includes a conducting surface, a dielectric layer formed on the conducting surface, and a plurality of conducting particles distributed on the dielectric layer. The dielectric layer can be formed from a material and a thickness selected to yield a specific absorption spectrum. Alternatively, the thickness or dielectric value of the material can change in response to an external stimulus, thereby changing the absorption spectrum.

Abstract: An optical measuring device is provided. An actuator of a reference mirror set drives a reference mirror to move back and forth at a scan velocity. A first light source module transmits a first light beam to an optical coupling module transmitting two parts of the first light beam respectively to an examinee object and the reference mirror set. The first light beam then is reflected by the examinee object and reference mirror set and then transmitted to the optical coupling module and the processing unit. The second light source module transmits a second light beam to the examinee object. Then the second light beam is reflected and then transmitted to the second sensing unit. The second sensing unit provides a sensing signal to the processing unit which accordingly provides a value of the relative velocity. The thickness is calculated according to the relative velocity and the scan velocity.

Abstract: A window system is provided that includes an electro-optic element having a first substantially transparent substrate defining first and second surfaces. The second surface has a first electrically conductive layer and a second substantially transparent substrate defines third and fourth surfaces. The third surface has a second electrically conductive layer and a primary seal disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic medium is disposed in the cavity that is variably transmissive such that the electro-optic element is operable between substantially clear and darkened states. A polymeric dust cover is positioned away from the electro-optic element defining at least two major surfaces and at least one indicia disposed in the dust cover. The indicia includes a plurality of damage channels having an aspect ratio greater than about 10:1.

Abstract: The present disclosure relates generally to a system and method for determining the pupillary distance of a person, more particularly determining the person's pupillary distance by using a computerized screen. The system and method do not require the trip or expense of a doctor or store visit, and are optimized for convenience and cost effectiveness. In a general embodiment, the present disclosure provides a method for determining a pupillary distance of a person without physically measuring the pupillary distance with a device. The method includes receiving a front facial image of the person, determining a scale of the image based on an estimated canthal distance, and determining the pupillary distance of the person based, in part, on the determined scale of the image.

Abstract: The invention discloses a four-piece optical lens for capturing image and a four-piece optical module for capturing image. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens with positive refractive power; a second lens with refractive power; a third lens with refractive power; and a fourth lens with refractive power; and wherein at least one of the image-side surface and object-side surface of each of the four lens elements is aspheric whereby the optical lens can increase aperture value and improve the imagining quality for use in compact cameras.

Abstract: A control system for a variable transmittance optical filter assembly includes a controller in communicatively coupled to a pair of load terminals, and a memory communicatively coupled to the controller and having encoded thereon statements and instructions executable by the controller to transition the optical filter assembly between operating states when coupled to the pair of load terminals. The controller is operable to perform any one or more of: allowing the optical filter assembly to transition to a dark state by shorting the load terminals together, maintaining the optical filter assembly in a hold mode by applying a pulse width modulated voltage signal across the load terminals, and transitioning the optical filter assembly between operative states by applying a voltage signal having voltage pulses of opposite polarities to the load terminals.

Abstract: A tracking and display system for an eye of a person is incorporated into eyewear having at least one lens and being positionable in front of the eye or eyes with attachment hardware. A circuit with a power source is fixed with the eyewear and includes at least one multispectral LED adapted to project light towards the eye and at least one multispectral light detector adapted to receive light reflected from the eye. As such, movement, anatomy and physiology of the eye are determined according to an organized pattern of projected light reflected and received by the at least one detector. To display an image, light from the at least one multispectral LED is conveyed by at least one optical fiber to an eye-facing surface of a lens of the eyewear and then onto the retina of the person's eye to form a visible heads-up display image.

Abstract: A head mountable device for measuring eye movement includes: a frame; a camera system comprising a first camera, wherein the camera system is coupled to the frame, and is configured to obtain a first set of images of a first eye of a user; and a first liquid crystal display (LCD) shutter configured to control passage of light to the first eye based at least in part on a first control signal, the first LCD shutter is configured to operate in a first primary mode and a first secondary mode, wherein the first LCD shutter is configured to allow less light to reach the first eye in the first secondary mode than in the first primary mode.

Abstract: An imaging lens includes first to sixth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant lens parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.

Abstract: An optical scanning apparatus includes first and second light source units including respective light sources; a rotating polygon mirror that performs deflection scanning of laser beams emitted from the light sources included in the first and second light source units; and a positioning member including a first abutting portion on which the first light source unit abuts and a second abutting portion on which the second light source unit abuts, the positioning member positioning the first and second light source units. The first and second light source units are positioned by the positioning member and arranged next to each other in a rotation axis direction of the rotating polygon mirror. The positioning member is a single member disposed between the first and second light source units in the rotation axis direction.

Abstract: The present invention has, in order along the optical axis from the object side: a first lens group (G1) that has positive refractive power; a second lens group (G2) that has negative refractive power; a third lens group (G3) that has positive refractive power; a fourth lens group (G4) that has positive refractive power; and a fifth lens group (G5). The fourth lens group (G4) is constituted by a single positive lens (L41), and the fifth lens group (G5) is constituted by a single lens (L51), which is fixed with respect to an image plane while power is being varied. The following conditional expression (1) is satisfied. 0.9<?2t·?3w/(?2w·?3t)<1.7 . . . (1), where ?2w denotes a magnification of the second lens group (G2) in the wide-angle end state, ?3w denotes a magnification of the third lens group (G3) in the wide-angle end state, ?2t denotes a magnification of the second lens group (G2) in the telephoto end state, and ?3t denotes a magnification of the third lens group (G3) in the telephoto end state.

Abstract: An electrowetting display device includes a picture element having a first support plate and a second support plate. A surface of a second layer of the first support plate is non-planar and has a shape at least partly corresponding with a pattern of a first layer of the first support plate.

Abstract: A first lens group includes a plano-concave and negative first lens, a catoptric element having a flat object side surface and a flat image side surface, and a first cemented lens, for example. Here, the first cemented lens includes a negative second lens and a positive third lens in order from an object side. A second lens group includes an aperture stop and a positive second cemented lens, for example. The second cemented lens includes a positive fourth lens, a negative fifth lens, and a positive sixth lens in order from the object side. A zoom lens satisfies a conditional expression 1.59<n21<2.20, assuming that a value n21 indicates refractive index of the fourth lens on a side closest to an object in the second lens group.

Abstract: After a first wafer on which mirrors and terminals are formed and a second wafer for sealing are stacked and bonded together, the first wafer and the second wafer are diced to manufacture electro-optical devices. In doing so, in a second surface of the second wafer, recesses overlapping the mirrors in a plan view are previously formed, and also grooves overlapping the terminals in the plan view are previously formed. For this reason, when the second wafer is diced along the grooves by advancing a dicing blade for second wafer from a third surface of the second wafer, the dicing blade for second wafer can be prevented from coming into contact with the terminal.

Abstract: A Mach-Zehnder interferometer (MZI) structure based on a doubly-corrugated spoofed surface plasmon polariton (DC-SSPP) waveguide is presented. The dependence of phase change on the dielectric loading of the DC-SSPP structure causes the output from both arms to interfere and enhance features on the transmission spectrum of the MZI. The proposed MZI structure can be used for tag-free bio-molecular sensing. The highly localized electro-magnetic field at frequencies close to SSPP resonance is shown to reduce the sample amount needed to produce interference patterns without affecting the selectivity of the sensing structure.