Abstract: Certain filters have been found to enhance color discrimination for individuals with color vision deficiency (CVD), aka color-blind individuals. The filters generally include a multilayer optical film with a strong, narrow reflection band in part of the green region of the visible spectrum. The film has an average internal transmission from 420-680 nm of at least 50%, 60%, or 70%, and an average internal transmission?10%, 5%, 2%, or 1% over a 10 nm wide range that includes 550 nm associated with a reflection band having a width (FWHM) of 60 nm or 50 nm or less. The filter may include a magenta layer disposed on a viewer side of the multilayer optical film to reduce glare, the magenta layer selectively absorbing green light. The magenta layer combined with the multilayer optical film may provide a rejection band whose width (FWHM) is 60 nm or less.

Abstract: A microscope including an imaging objective for imaging a sample on a detector and means for illuminating the sample with a light sheet in the focus plane of the imaging objective. The illumination means includes an illumination source which emits coherent light, and Bessel optics which generate at least two plane waves from the light beam and give propagation directions for the plane waves. The propagation direction of each of the plane waves encloses an acute angle with the focus plane in each instance, the magnitude of the acute angle being identical for each of the plane waves, so that the plane waves undergo constructive interference in the focus plane so that a light sheet is generated. Similarly, the illumination means can also include an optical element by which a rotationally symmetric Bessel beam is generated from the light beam for dynamic generation of a light sheet.

Abstract: A multi-spectral weapon sight optical system, a multi-spectral weapon sight, and a multi-spectral weapon sight system are disclosed. The multi-spectral weapon sight optical system includes first and second catadioptric optical systems arranged along a common axis and have a common aperture. The first catadioptric optical system forms a first on-axis image from first radiation having a first wavelength band while substantially transmitting second radiation to the second catadioptric optical system wherein the second radiation has a second wavelength band. The second catadioptric optical system forms a second on-axis image using the second radiation. First and second image sensors respectively receive the first and second images and form respective first and second digital images, which are then electronically fused to form a fused image. The fused image is displayed on a display and viewed as a visible display image using a day sight.

Abstract: Systems and methods for creating fully custom products from scratch without exclusive use of off-the-shelf or pre-specified components. A system for creating custom products includes an image capture device for capturing image data and/or measurement data of a user. A computer is communicatively coupled with the image capture device and configured to construct an anatomic model of the user based on the captured image data and/or measurement data. The computer provides a configurable product model and enables preview and automatic or user-guided customization of the product model. A display is communicatively coupled with the computer and displays the custom product model superimposed on the anatomic model or image data of the user. The computer is further configured to provide the customized product model to a manufacturer for manufacturing eyewear for the user in accordance with the customized product model.

Abstract: A mirror reflective element assembly for a vehicle includes an electrically variable reflectance mirror reflective element that includes front and rear substrates with an electrochromic medium disposed therebetween and bounded by a perimeter seal. A perimeter layer is disposed at a second surface of the front substrate proximate a perimeter edge of the front substrate that conceals the perimeter seal from view by a driver of a vehicle. At least a portion of the mirror reflector extends from under the perimeter seal outward towards at least a portion of the perimeter edge of the rear substrate. The mirror reflective element includes a more curved outboard region and a less curved inboard region. A laser-etched demarcation may demarcate the more curved outboard region of the mirror reflective element from the less curved inboard region of the mirror reflective element.

Abstract: A multifocal ophthalmic lens has an optic zone that includes at least one first zone having a dioptric power that satisfies a distance refraction need of a patient; and at least one second zone having a dioptric power that is greater than the dioptric power of the at least first zone. The at least one first zone and the at least one second zone are configured so that 1) an image quality on the retina of the patient is superior to the image quality both in front of the retina and behind the retina, and 2) an image quality in front of the retina of the patient is superior to the image quality behind the retina. The multifocal ophthalmic lens prevents and/or slows myopia progression.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having positive refractive power, a fourth lens unit having negative refractive power, and a rear group that includes one or more lenses and has positive refractive power. In the zoom lens, a distance between lens units arranged next to each other changes during zooming. At least one of the lens units provided on the image side of the third lens unit includes a resin lens having positive refractive power and a resin lens having negative refractive power. A material of the resin lens having positive refractive power and a material of the resin lens having negative refractive power are set appropriately.

Abstract: An annular optical spacer includes a first side portion, a second side portion, an outer annular portion, an inner annular portion and an anti-reflective layer. The second side portion is opposite to the first side portion. The outer annular portion connects the first side portion with the second side portion. The inner annular portion connects the first side portion with the second side portion. A vertical distance between the inner annular portion and a central axis of the annular optical spacer is shorter than a vertical distance between the outer annular portion and the central axis of the annular optical spacer. The inner annular portion includes at least one rugged surface. The rugged surface includes a plurality of annular protruding structures, and the annular protruding structures are coaxially arranged around the central axis. The anti-reflective layer is on top of the rugged surface.

Abstract: A microscope optical system includes a first lens group having a positive power, a second lens group, and a third lens group including a positive lens. The first lens group includes: a first lens component arranged closest to an object, the first lens component including a first meniscus lens that has a meniscus shape with a concave surface facing the object side; a second lens component having a positive power that has a meniscus lens shape with the concave surface facing the object side; and a cemented lens including a positive lens and a negative lens that is made of a higher-dispersion material than a material of the positive lens. When NA, ?G3, DG3i, DG23 represent a numerical aperture of the microscope optical system, a lateral magnification of the third lens group, a spacing between the third lens group and an image plane, a spacing between the second lens group and the third lens group, the microscope optical system satisfies the following conditional expressions: 0.25<NA?1.51 ??(1); 0.

Abstract: A spectral instrument including a light source configured to produce a light beam, the light beam comprising a plurality of wavelengths, and the light beam being about collimated or pseudo-collimated. The spectral instrument also includes a spectral dispersion device in optical communication with the light source. The spectral instrument also includes a screen disposed in the optical path after the spectral dispersion device. The screen comprises a material configured to be substantially opaque to at least some of the plurality of wavelengths. The screen is sized and dimensioned to at least partially block selected ones of the plurality of wavelengths. The screen is movable with respect to an axis of the screen. The spectral instrument also includes an imaging lens disposed in the optical path and disposed either after the screen or before the screen.

Abstract: A MEMS-micro-mirror (30) is provided comprising a mirror body (50) that is rotatably arranged in a mirror frame (60) around a rotation axis (58) extending in a plane defined by the mirror body. The rotation axis extends through a first and a second mutually opposite end-portion (51, 53) of the mirror body. The mirror has a reflective first main surface (55) and opposite said first main surface a second main surface (57) provided with a first and a second pair of reinforcement beams. The pair of reinforcement beams (91a, 91b) extends from the first end-portion (51) in mutually opposite directions away from the rotation axis. The second pair of reinforcement beams (93a, 93b) extends from the second end-portion (53) in mutually opposite directions away from the rotation axis. Reinforcement beams of said first pair extend towards respective ones of said second pair.

Abstract: A lens driver or lens driver circuitry for an ophthalmic apparatus comprising an electronic system which actuates a variable-focus optic is disclosed herein. The lens driver is part of an electronic system incorporated into the ophthalmic apparatus. The electronic system includes one or more batteries or other power sources, power management circuitry, one or more sensors, clock generation circuitry, control algorithms and circuitry, and lens driver circuitry. The lens driver circuitry includes one or more power sources, one or more high voltage generators and one or more switching circuits. Specifically, the lens driver comprises an H-bridge/H-bridge controller for providing the proper voltage, including polarity, to drive the electronic included in the ophthalmic apparatus.

Abstract: A corrective lens adapter configured for attaching to a firearm scope that comprises a lens adapted to compensate for presbyopic vision deficiencies of a user, a cylindrical body adapted to receive and support the lens, and a shroud adapted to be placed over a proximate end of the scope. The shroud is formed of a flexible material to be operatively fit over the eye piece of the scope without marring or damaging the scope, and includes a cord for cinching the shroud closed.

Abstract: Translating contact lenses which are truncated for correcting presbyopia and whose design is optimized to maximize translation ability while maintaining comfort when the lens is worn on eye. Truncation of the lenses results in a non-round geometry while still retaining under-lid residency in select portions of the lens itself. Maximum thickness and back surface radius of curvature along with ramp shape can be optimized individually or in combination to maximize translation of the lens relative to the eye, when the lens is positioned on eye.

Abstract: A Fabry-Perot tunable filter comprises a membrane device. The membrane device includes a support structure having an optical port. Also, the membrane device has an optical membrane structure separated from the support structure over the optical port. The optical membrane structure includes a center body portion and an outer body portion. Tethers extend radially from the center body portion to the outer body portion of the optical membrane structure. The center body portion has an area that is about equal or smaller than the area of the optical port.

Abstract: The imaging device is constituted of a lens, an imaging device receiving the incident light and converting the incident light to be an electrical signal, a cylindrical member accommodating the lens, a holder holding the imaging device, a groove formed of an outer periphery surface of the cylindrical member and an inner periphery surface of the holder, an adhesive provided in the groove with the outer periphery surface and the inner periphery surface being contacted with each other, and an anchor mechanism provided in the groove, producing an anchor effect in combination with the adhesive, thereby increasing the strength of a joint between the cylindrical member and the holder.

Abstract: A pair of swimming goggles includes a frame having a first sub-frame and a second sub-frame. The first and the second sub-frames have a first opening and a second opening defined therein. A first lens is secured in the first sub-frame and a second lens is secured in the second sub-frame. A first eye-piece and a second eye-piece are arranged adjacent to the first sub-frame and the second sub-frame, respectively. A third lens is secured in the first eye-piece and a fourth lens is secured in the second eye-piece. A first connecting member and a second connecting member releasably secure the first eye-piece and the second eye-piece to the first and the second sub-frames, respectively. At least one of the third and the fourth lens may take the form of a corrective lens.

Abstract: A lens module includes a first lens having negative refractive power, an object-side surface thereof being convex and an image-side surface thereof being concave; a second lens having an object-side surface that is convex; a third lens having an object-side surface that is concave and an image-side surface that is convex; a fourth lens having an object-side surface that is concave; a fifth lens having an object-side surface that is concave and an image-side surface that is convex; and a sixth lens having an object-side surface is convex and having one or more inflection points on an image-side surface thereof. The first to sixth lenses are sequentially disposed in numerical order from the first lens to the sixth lens from an object side of the lens module toward an image side of the lens module.

Abstract: The present invention relates to improved contact lens products which not only have an improved and sustainable wettability. The contact lens product of the invention comprises a soft hydrogel contact lens immersed and autoclaved in a packaging solution including a polyoxyethylene-polyoxybutylene block copolymer and a high molecular weight copolymer of N-vinylpyrrolidone and at least one amino-containing vinylic monomer. The present invention also provides methods for making contact lens products of the invention.

Abstract: A vehicle mirror assembly having a housing or base member, a mirror lens and a connecting gasket member. The mirror lens is provided in the shape of a portion of an end of an ellipsoid. The lens has a varying radius of curvature. The center portion of the tens has a smaller radius of curvature than the outer portions along the major axis of the lens creating an improved field of view of the reflected image.