Abstract: In some aspects, an afocal adaptor for an optical device comprises a housing. The housing includes a first and a second optical channel. A divider is configured between the first optical channel and the second optical channel to prevent transmission of electromagnetic radiation between the first optical channel and the second optical channel. At least one lens is associated with each of the first optical channel and the second optical channel. A particular at least one lens is configured to provide a focal point for each of the first optical channel and the second optical channel and to guide a particular type of electromagnetic radiation through each of the first optical channel and the second optical channel. The electromagnetic radiation is guided into a corresponding first receiving optical channel and a second receiving optical channel associated with the optical device. A coupling mechanism is attached to the housing and configured to permit attachment of the housing to the optical device.

Abstract: A device for tunable optical filter includes a substrate, one or more piezos, a bottom mirror, and a top mirror. The one or more piezos are placed on the substrate. The one or more piezos have a piezo thickness. The bottom mirror is placed on the substrate. The bottom mirror has a bottom mirror thickness greater than the piezo thickness. The top mirror is placed on the bottom mirror. The top mirror is attached to the one or more piezos.

Abstract: Provided is a reading apparatus of the present invention, including: an image pickup element configured to pick up an image of an object; a first optical system including at least one reflection surface configured to reflect a light flux from the object, the first optical system being configured to form an intermediate image of the object; and a second optical system configured to image the intermediate image onto a light-receiving surface of the image pickup element, in which: the at least one reflection surface includes a first reflection surface which is closest to the light-receiving surface on an optical path, and which has a positive power; and the following condition is satisfied: 5?TD/IML?20 where TD represents a maximum distance from the first reflection surface to the light-receiving surface on the optical path, and IML represents a maximum image height of the second optical system.

Abstract: An optics arrangement for a solid immersion lens (SIL) is disclosed. The arrangement enables the SIL to freely tilt. The arrangement includes a SIL having an optical axis extending from an engaging surface and a rear surface of the SIL; a SIL housing having a cavity configured to accept the SIL therein while allowing the SIL to freely tilt within the cavity, wherein the cavity includes a hole positioned such that the optical axis passes there-through, to thereby allow light collected by the SIL to propagate to an objective lens; and, a SIL retainer attached to the SIL housing and configured to prevent the SIL from exiting the cavity.

Abstract: A display device being switchable between a normal display mode and an anti-peeping display mode and a display system comprising the display device are disclosed. The display device comprises: a housing; a display panel mounted within the housing and provided with a polarizer only on a light incidence side thereof, the polarizer being configured to polarize light to be incident into the display panel; and a polarization analyzing structure fitted onto the housing, and configured to selectively analyze light emitted out from an active display area of the display panel so as to achieve a normal display mode, in which a user is able to directly view an image displayed in the display device, and anti-peeping display mode, in which the user is able to view the image displayed in the display device only by means of an additional polarization analyzer, of the display device.

Abstract: The present invention relates to an optical multilayer coating placed on or above a substrate. The optical multilayer coating includes a high-refractive index layer with a refractive index of 1.76 to 2.7, a magnesium oxyfluoride layer, and a magnesium fluoride layer. The high-refractive index layer, the magnesium oxyfluoride layer, and the magnesium fluoride layer are stacked on or above the substrate in this order and are in contact with each other. The magnesium oxyfluoride layer has a composition represented by the following formula: MgxOyFz??(1) where z/x is not less than 0.01 nor greater than 1.45 and z/y is not less than 0.01 nor greater than 3.17.

Abstract: Provided is a camera lens, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object side to an image side of the camera lens in turn. The first lens is of a positive focal power, an object side surface of the first lens is convex; an object side surface of the fourth lens is concave; the fifth lens is of a positive focal power; the seventh lens is of a negative focal power. The camera lens further includes an aperture stop arranged between a photographed object and the second lens, the camera lens meets the following formula: TTL/ImgH<2.4; 1.5<CT1/CT2<4.

Abstract: A telephoto lens includes in order from an object side, a first unit having a positive refractive power, a second unit having a negative refractive power, and a third unit having a positive refractive power, and a focusing from an infinite object point to an object point at a short distance is carried out by moving the second unit toward an image side, and the following conditional expression (17) is satisfied: 0.2<Y2/Y1a<0.32??(17) where, Y2 denotes a maximum height of an axial light ray on a surface of incidence of the second lens unit, and Y1a denotes a maximum height of an axial light ray on a surface of incidence of the first lens unit.

Abstract: Telescope with optical resolution and continuity of the field of view comprising a spherical primary mirror, wherein: a) said telescope is equipped with a field of view and a system of repartitioning the field of view, b) said system of repartitioning the field of view is placed in proximity of die focus of the primary mirror, and is constituted by a secondary mirror composed of n planar reflective surfaces, c) said n planar reflective surfaces are contiguous sine to the other and form a continuous multifaceted prismatic reflector, so as to obtain continuity of the field of view over the whole field, d) said n planar reflective surfaces are followed by a corresponding number of optical cameras that form n portions of image in n distinct focal planes, and e) a collecting and recording element is positioned on each n-th focal plane.

Abstract: Present embodiments provide for an optical imaging lens. The optical imaging lens includes 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 positioned sequentially from an object side to an image side. Through arrangement of convex or concave surfaces of the six lens elements, the length of the optical imaging lens may be shortened while providing better optical characteristics and imaging quality.

Abstract: An imaging optical system includes a positive or negative first lens group including a negative lens element closest to the object, a diaphragm, and a positive second lens group. The negative lens element closest to the object has an object-side aspherical surface including a paraxial convex surface, a paraxial curvature that is the greatest within the effective aperture, and a portion within the effective aperture having a curvature less than ½ of the paraxial curvature. These conditions are satisfied: R1/f<1.35 D1/f>0.4 ?2.5<f1/f<?1.3 V>56 “f” designates the overall focal length; f1, R1 and D1 respectively designate the focal length, paraxial radius of curvature of an object-side surface, and thickness, of the negative lens element closest to the object; and V designates the Abbe number regarding the d-line of a lens element, within the second lens group, closest to the diaphragm.

Abstract: An optical scanner comprises a light source, an MEMS mirror and a position detector. The light source emits a light beam. The MEMS mirror deflects the light beam emitted from the light source. The position detector detects the position of the MEMS mirror. The position detector is configured on the same semiconductor substrate with the MEMS mirror.

Abstract: A color filter plate, a display device including the color filter plate, and a color filter plate fabrication method are provided. The color filter plate comprises a substrate, a black matrix formed on the substrate, a color barrier layer formed on the black matrix, a protective layer formed on the black matrix and the color barrier layer, and a plurality of photo spacers formed on the protective layer. At least one hole is formed in the protective layer and between any two adjacent photo spacers, such that lower parts of adjacent photo spacers are no longer in contact with each other, and the adjacent photo spacers are fully separated from each other.

Abstract: An antiglare film in which occurrence of screen scintillation and white muddiness can be sufficiently prevented at a high level while maintaining hard coating properties and antiglare properties, and excellent display images with a high contrast can be provided. The antiglare film includes a light-transmitting substrate; and an antiglare layer having a surface roughness on at least one surface of the light-transmitting substrate, wherein the antiglare layer contains an aggregate composed of two or more types of fine particles, and the aggregate forms a projection of the surface of the antiglare layer to form a surface roughness on the antiglare layer.

Abstract: The invention concerns a device for emitting a light beam (10) intended to form an image, the device comprising one or more sources (4, 5, 6), each emitting a laser-type beam (7, 8, 9), the device being configured to form the light beam (10) from the one laser beam or from the combination of laser beams (7, 8, 9), the device comprising attenuation means (12) disposed downstream of the source(s) (3, 4, 5), enabling the optical power of the light beam (10) to be varied.

Abstract: A planar optical device, comprised of sets of nanometer-scale holes milled into a thin metal or ceramic film of subwavelength thickness serves to form arbitrary waveform of light. The holes form a pattern, preferrably rings, of various sizes in order to achieve a given phase front of light due to photonic effect. When designed as a lens, the device focuses incident light into a tight focal spot. In symmetric design, the focusing property of the device does not depend on the incident polarization angle. The lens can be manufactured based on high-throughput fabrication methods and easily integrated with a chip or placed at the end of an optical fiber.

Abstract: Swimming goggles are developed to allow a swimmer to see the end of the pool without moving their head while swimming in backstroke. Using a light reflector, a swimmer can see through a backstroke viewing window, allowing them to see along the direction that they are moving when swimming backstroke. Using a motion sensor and electric control circuits, a swimming goggle can provide optimum views for the swimmer wearing the swimming goggle. Using a sound speaker, a swimming goggle can play music and provide voice reports to the swimmer.

Abstract: An optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element and a third lens element. The first lens element with positive refractive power has an object-side surface being convex, and the object-side surface and an image-side surface thereof are aspheric. The second lens element with negative refractive power has an image-side surface being concave, and an object-side surface and the image-side surface thereof are aspheric. The third lens element with refractive power has an object-side surface being concave, and the object-side surface and an image-side surface thereof are aspheric. The optical lens assembly further includes a stop with no lens element having refractive power disposed between the stop and the first lens element. The optical lens assembly has a total of three lens elements with refractive power.

Abstract: Provided is a zoom lens, including, in order from an object side to an image side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; and a third lens unit having a positive refractive power. In the zoom lens, during zooming, the first lens unit is configured not to move, and the second lens unit and the third lens unit are configured to move along mutually different loci, and a focal length (fw) of the zoom lens at a wide angle end, a focal length (ft) of the zoom lens at a telephoto end, a focal length (f2) of the second lens unit, and a focal length (f3) of the third lens unit are appropriately set.

Abstract: A laser system and associated method are provided for controlling the wave front of a primary laser beam. The laser system includes a laser medium for producing a primary laser beam and at least one optical element to which the primary laser beam is directed. The laser system also includes a secondary laser source for producing a secondary laser beam. The laser system may further include a spatial light modulator configured to receive the secondary laser beam and to spatially modulate the secondary laser beam to create a spatially modulated secondary laser beam having a spatial intensity pattern. The spatially modulated secondary laser beam may impinge upon at least one of the laser medium or the at least one optical element in order to selectively modify the temperature of portions of the laser medium or the at least one optical element upon which the spatially modulated secondary laser beam impinges.