Abstract: A telephoto lens includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit, and the first lens unit includes a front-side lens unit having a positive refractive power and a rear-side lens unit, and the second lens unit moves at the time of focusing, and the third lens unit has a positive lens and a negative lens, and the front-side lens unit includes lenses positioned closer to the object side than a predetermined negative lens that satisfies Conditional Expression (a), and the rear-side lens unit has the predetermined negative lens and a positive lens, and Conditional Expressions (1A) and (14) are satisfied: 0.5?|f/fLn|??(a), 0.015?DGFGR/f?0.25??(1A), and 0.19?DGFairmax/DGF?1.0??(14).

Abstract: A coalignment system including wedge-prism assembly that can be attached to a conventional night vision scope, for example. This could allow a standard handheld night vision scope to be deployed in different modes such as on headmounted goggles or as an augmentation scope in front of a day sight a weapon while enabling Line of sight/point of impact (LOS/POI) correction. In order to ensure maximum compatibility, the coalignment system includes diopter adjustment.

Abstract: An imaging lens system includes, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a second lens element with negative refractive power; a third lens element with refractive power, wherein an object-side surface and an image-side surface thereof are aspheric; a fourth lens element with refractive power, wherein an object-side surface and an image-side surface thereof are aspheric; and a fifth lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, which are both aspheric. The imaging lens system is further provided with an aperture stop, and there is no lens element with refractive power disposed between the aperture stop and the first lens element.

Abstract: A camera shake correction apparatus (100) comprising a coil (8) provided at the movable member (2), a magnet (41) used for driving provided at the stationary member (4), facing the coil (8) in the direction orthogonal to the optical axis (C), a yoke (43) provided at the stationary member (4), facing the coil (8) and the magnet (41) used for driving in the direction of the optical axis, the yoke and the magnet used for driving constituting a magnetic circuit (6), and a magnet (11) used for biasing provided at the movable member (2), facing the yoke (43) in a non-contact manner on the opposite side of the coil (8) and the magnet (41) used for driving, the magnet (41) used for biasing applying a magnetic suction force to the yoke (43).

Abstract: A photographing 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, and a fourth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The third lens element having positive refractive power has an image-side surface being concave, and an object-side surface and the image-side surface thereof being aspheric. The fourth lens element has an object-side surface being concave, and the object-side surface and an image-side surface thereof being aspheric. The photographing lens system further includes an aperture stop, and no lens elements are disposed between the aperture stop and the first lens element. The photographing lens system has a total of four lens elements.

Abstract: The invention relates to a microscope slide holder for an optical microscope. The slide holder comprises a base portion, a slide holder portion arranged on the base portion and having a mounting zone capable of receiving microscope slides of one or more slide types, the slide holder portion being movably arranged on the base portion, and a manipulator for moving the slide holder portion with respect to the base portion in three orthogonal dimensions. According to the invention, the base portion is dimensioned to fit into a mounting zone designed for at least one of the one or more microscope slide types. The invention allows for convenient sample movement in microscopes whose sample stage is not inherently designed for scanning microscopy.

Abstract: A light control member includes a light-transmissive first substrate, a light diffusing portion which is defined on a first surface of the first substrate, and a light shielding layer which is defined in a first region other than a second region in which the light diffusing portion is formed on the first surface and includes a light emitting end surface in contact with the first substrate, and a light incident end surface opposite the light emitting end surface and having a first area larger than a second area of the light emitting end surface, and structured such that a height from the light incident end surface to the light emitting end surface is larger than a layer thickness of the light shielding layer.

Abstract: A camera assembly comprises a lens assembly supported on a support structure, wherein the lens assembly includes an autofocus actuator arrangement and the camera assembly includes an optical image stabilization assembly arranged to move the lens assembly in a plane perpendicular to the optical axis. A flexible printed circuit tape connected between the support structure and the lens assembly and providing an electrical connection to the auto-focus actuator arrangement is bent around a corner, thereby allowing the flexible printed circuit tape to accommodate the motion of the lens assembly perpendicular to the optical axis. A crimp plate connected to the lens assembly which crimps shape memory alloy wires has features extending out of the plane of the crimp plate for reducing flexibility. At least part of the optical image stabilization assembly overlaps the lens assembly in the direction along the optical axis, thereby reducing the height of the camera assembly.

Abstract: Provided is a laser scanning microscope including a stage on which a sample is placed, an objective lens that is disposed below the stage and that focuses laser light from a light source onto the sample, a scanner that scans the laser light focused by the objective lens over the sample, a condenser lens disposed opposite the objective lens with the stage interposed therebetween, and a light blocking cover that is disposed in an optical path between the condenser lens and the stage and that blocks external light entering the objective lens or the condenser lens from above the sample via the stage.

Abstract: A zoom lens system according to the disclosure, in order from an object side to an image side, includes a first lens group with positive optical power, a second lens group with negative optical power, and a subsequent lens group composed of at least three lens groups. During zooming operation, the first lens group moves along the optical axis and the second lens group does not move. The second lens group has an aperture stop. The second lens group satisfies following condition (1), ?9.0?fG1/fG2??2.0 ??(1) where fG1 is the focal length of the first lens group, and fG2 is the focal length of the second lens group.

Abstract: The present disclosure relates to optical stacks having nanostructure-based transparent conductive films and low diffuse reflection. Also described are display devices that incorporate the optical stacks.

Abstract: An optical film having a structured surface is described. At least 90% of the structured surface has a slope magnitude that is less than about 5 degrees. The optical film may have an optical haze of less than about 10% and an optical clarity of less than about 50%, or may have an optical haze of less than about 7.5% and an optical clarity of less than about 60%, or may have an optical haze of less than about 3% and an optical clarity of less than about 65%.

Abstract: An imaging optical system consists of a first optical system and a negative second optical system in order from a magnified side. The second optical system forms an intermediate image, and the first optical system forms the intermediate image on a magnified-side conjugate plane. The second optical system consists of a positive front group and a back group in order from the magnified side. Predetermined conditional expressions are satisfied.

Abstract: An interior rearview mirror system for a vehicle includes an interior rearview mirror assembly comprising a mirror head. The mirror head includes a first microphone operable to generate a first audio signal and a second microphone operable to generate a second audio signal. An audio sound processor is operable to process the first and second audio signals to enhance human voice to noise clarity. Responsive to processing by the audio sound processor of the first and second audio signals, an audio output is generated that, at least in part, distinguishes a human voice present in the vehicle from noise present in the vehicle. The audio output includes an input to an audio system of the vehicle that transmits wirelessly to a remote receiver. Processing by the audio signal processor of the first and second audio signals to enhance human voice to noise clarity utilizes electronic noise cancelation.

Abstract: An image-capturing device for a digital microscope is provided. The image-capturing device includes a camera sensor, an optical unit for imaging a sample in an image plane on the camera sensor The optical unit includes at least one lens group which is mounted so as to be movable perpendicularly with respect to an optical axis, and a moving device with a first drive for the relative movement of at least one part of the movably mounted lens group and thus of the imaging of the sample on the camera sensor parallel to the image plane. The first drive is coupled to the movably mounted part of the lens group via a first flexure bearing formed in the moving device.

Abstract: An imaging lens includes a first lens group having a negative refractive power, an aperture stop, and a second lens group having a positive refractive power. The first lens group, the aperture stop, and the second lens group are sequentially disposed in a direction from an object side to an image side. The first lens group includes a negative first lens and a negative second lens. The second lens group includes a positive third lens, a positive fourth lens, a negative fifth lens, and a positive sixth lens. Conditional formula (1) below is satisfied: 0.16<DL3/TL<0.32??(1) where DL3 is a center thickness of the third lens, and TL is distance between an object-side surface of the first lens and an image-side surface of the sixth lens along the optical axis.

Abstract: An optical image stabilization mechanism is provided, including a holder for holding a lens, a frame, a base, a first coil, a second coil, a displacement sensor, a first magnetic element, a second magnetic element, and a third magnetic element. The frame is movably connected to the holder and the base. The first coil is disposed on a side of the holder. The second coil is disposed on the base. The first and second magnetic elements are disposed on the frame and correspond to the first coil. The magnetic pole direction of the first magnetic element is opposite to that of the second magnetic element. The third magnetic element is disposed on the frame and corresponds to the second coil. The displacement sensor is disposed on the base to detect relative displacement between the lens and the base.

Abstract: An optical system includes a first lens having negative refractive power and having two concave surfaces, a second lens having positive refractive power, a third lens having refractive power, a fourth lens having refractive power, a fifth lens having refractive power, a sixth lens having refractive power, and a seventh lens having refractive power. The first to seventh lenses are sequentially disposed from an object side.

Abstract: An anamorphic optical element and an adjustment mechanism for selectively rotating the optical element either around an axis substantially in a vertical direction, an axis substantially in an optical axis direction, an axis substantially in a plane formed by the vertical direction and the optical axis direction, or combination of axes thereof is used to vary a vertical separation between two or more spots.

Abstract: On a surface of a screen, a first direction parallel to a virtual plane and a second direction orthogonal to the first direction are defined. A basic diffusion member of the screen diffuses and transmits each light ray at a first angle in a first plane parallel to the first direction, and diffuses and transmits the light ray at a second angle larger than the first angle in a second plane parallel to the second direction. An adjustment diffusion member of the screen diffuses and transmits each light ray at an adjustment angle larger than the first angle in the first plane. The basic diffusion member and the adjustment diffusion member are stacked on each other such that a diffusion angle of each light ray by the screen in the first plane is adjusted to a target angle larger than the adjustment angle.