Abstract: To provide a glass substrate with an antireflection film, which employs glass having high refractive index and which has excellent strength, and an optical member comprising it. A glass substrate with an antireflection film, comprising a glass substrate which consists of glass having refractive index (nd) of from 1.68 to 2.00 and which has plate thickness of from 0.01 to 2 mm, and an antireflection film formed on at least one principal plane of the glass substrate.

Abstract: An optical instrument comprises: an openable housing and a cover portion which together define an optical path cavity through which light travels for operation of the optical instrument; and one or more optical components mounted to the openable cover portion and located within or at least partially within the optical path cavity. The openable housing defines a housing aperture. The cover portion is moveable relative to the openable housing between: a closed position where the cover portion is located to cover the housing aperture to visually conceal the one or more optical components or at least portions of the one or more optical components; and an open position where the cover portion is located to uncover the housing aperture and visually expose the one or more optical elements or at least portions of the one or more optical components via the housing aperture.

Abstract: A vehicular vision system includes a forward viewing camera disposed at and viewing through a windshield of a vehicle. A driver viewing camera is disposed in the vehicle and views the driver's eyes. A control, responsive to processing of image data captured by the forward viewing camera to determine a light source ahead of the vehicle, and responsive to processing of image data captured by the driver viewing camera to determine a gaze direction of the eyes of the driver, determines a forward view path between the driver's eyes and the determined light source and determines a location where the determined forward view path intersects the windshield. The control, responsive to the determined light source having an intensity greater than a threshold level, controls the windshield to locally darken a region of the windshield that includes the location where the determined forward view path intersects the windshield.

Abstract: An antiglare transparent substrate includes a transparent substrate which includes a chemically strengthened glass and has a first main surface and a second main surface. The first main surface includes: a first smooth region having an arithmetic average roughness Ra of 0.05 nm or more and 2 nm or less; and a first rough region having an arithmetic average roughness Ra larger than the arithmetic average roughness Ra of the first smooth region. The second main surface includes, in at least a part of a region facing the first smooth region, a second smooth region having an arithmetic average roughness Ra of 0.05 nm or more and 2 nm or less.

Abstract: A projection lens unit of the present disclosure is a projection lens unit that enlarges and projects image light output from an image forming unit onto a projection target, the image light including first light and second light having a longer wavelength band than the first light. The projection lens unit includes a plurality of lenses coated with a first antireflection coating, and a wavelength selection filter having a first region in a center of the wavelength selection filter through which an optical axis passes and a second region around the first region. In the wavelength selection filter, a transmittance of the first light in the second region is lower than a transmittance of the first light in the first region.

Abstract: A prism block includes a first prism having first, second and third surfaces, a second prism having a fourth surface parallel to the first surface, a fifth surface facing the second surface, and a sixth surface, a third prism having seventh and eight surfaces respectively facing the second and fifth surfaces, and an optical path separation coating disposed between the fifth and eighth surfaces. Illumination light incident on the third surface is reflected by the second surface, and is emitted from the first surface. Projection light incident on the first surface is emitted from the fourth surface. Imaging light incident on the fourth surface is reflected by the optical path separation coating, and is emitted from the sixth surface. A projection axis plane including optical paths of the illumination light and the projection light, and an imaging axis plane including an optical path of the imaging light intersect each other.

Abstract: A synthetic polymer film (35), (36) having a surface which has a plurality of raised portions (35p), (36p), wherein a two-dimensional size of the plurality of raised portions is in a range of more than 20 nm and less than 500 nm when viewed in a normal direction of the synthetic polymer film, the surface having a microbicidal effect, and the synthetic polymer film includes a fluorine element in such a profile that a fluorine content is not constant in a thickness direction but is higher in a portion closer to the plurality of raised portions than in a portion farther from the plurality of raised portions.

Abstract: The present invention relates to anti-reflective films including: a light-transmitting substrate; a hard coating layer; and a low refractive layer, wherein the low refractive layer includes a first region including a binder resin and high refractive inorganic nanoparticles and a second region including a binder resin and low refractive inorganic nanoparticles, and when polarization ellipticity measured by ellipsometry is fitted to a Cauchy model for each of the first region and the second region, predetermined requirements are fulfilled.

Abstract: An optical device for a lighting module. The invention relates to an optical device and a lighting module including a light source provided with a plurality of emitting elements and with said optical device. One face of a lens of the device comprises an array of recessed patterns, each of which is organized with a specific profile so as to produce an optimized light distribution. The profile in particular has a rotational symmetry.

Abstract: A black structure includes a black layer and a light transmitting portion in a same plane, in which the black layer has a fine uneven structure having a period of 380 nm or less on a surface of the black layer on the viewing side, and a surface of the black layer opposite to the surface having the fine uneven structure is bonded to a base material. A self-luminous image display device includes a self-luminous image display panel and the black structure.

Abstract: An annular light trapping component includes an inner surface, an outer surface, an object-side surface and an image-side surface. The inner surface includes multiple L-shaped annular grooves. The annular light trapping component includes multiple stripe-shaped structures in the L-shaped annular grooves. The L-shaped annular grooves include an object-side L-shaped annular groove closest to the object-side surface and an image-side L-shaped annular groove closest to the image-side surface. A bottom diameter of the image-side L-shaped annular groove is larger than a bottom diameter of the object-side L-shaped annular groove. Each L-shaped annular groove includes a first side and a second side located between the object-side surface and the image-side surface. The stripe-shaped structures are disposed on the first side or the second side. A degree of inclination between the first side and the central axis is larger than a degree of inclination between the second side and the central axis.

Abstract: Embodiments of the present disclosure generally relate to optical devices. More specifically, embodiments described herein relate to optical devices and methods of manufacturing optical devices having optical device structures with at least one of varying depths or refractive indices across the surface of a substrate. According to certain embodiments, an inkjet process is used to deposit a volumetrically variable optical device that is etched to form a diffractive optic element (DOE). Volumetrically variable can relate to the thickness of the optical device, or the relative volume of two or more diffractive materials deposited in combination. According to other embodiments, a single-profile DOE is deposited on a substrate and an inkjet process deposits a volumetrically variable organic material over the DOE. The DOE and organic material are etched to modify the profile of the structure, after which the organic material is removed, leaving the modified-profile DOE.

Abstract: Inorganic coatings that may be used to coat and protect galvanized steel are disclosed. The protective inorganic coatings include a liquid composition portion comprising water, alkali metal oxide components and a silicate-containing component. The coatings also include a powder composition portion comprising microspheres, metal oxide powder and optional microfibers. When applied to galvanized steel, the coatings provide chemical and physical protection.

Abstract: An optical lens with an antireflective film includes: a lens substrate; and an antireflective film disposed on the lens substrate. The antireflective film is formed of layers each having a physical thickness of 140 nm or less. In order from an air side, the antireflective film has: a first layer formed as an MgF2 layer, a second layer, a fourth layer, a sixth layer, an eighth layer, and a tenth layer each having a refractive index of 2.0 or more and 2.3 or less, and a third layer, a fifth layer, a seventh layer, and a ninth layer each formed as an SiO2 layer.

Abstract: A laser crystallization apparatus includes a plurality of laser generators which generate a plurality of laser beams, a plurality of attenuators which adjust energy intensity of the plurality of laser generators, and an optical module which overlap outputs of the plurality of attenuators to output a line beam. A first attenuator of the plurality of attenuators attenuates the energy intensity of the corresponding laser beam, and a second attenuator of the plurality of attenuators maintains the energy intensity of the corresponding laser beam.

Abstract: The transparent windscreen display (100) has a multilayer structure comprising at least the following layers: a transparent substrate layer (110); a transparent adhesive layer (120); a transparent display module (130); and a transparent protective layer (140). The display module (130) is configured to have a plurality of pixel units or pixel array units with an inter-pixel space therebetween. There is a predetermined distance (d) between the adjacent pixel units or pixel array units in both longitudinal and transversal directions of the display module (130), said distance being about 20-80% of the width of one pixel unit. The inter-pixel space is filled with a transparent material and involves flexible electric conductors for electrically connecting the adjacent pixel units or pixel array units.

Abstract: A plastic barrel includes an object-end portion, an image-end portion, a tube portion and a plurality of wedge structures. The object-end portion includes an outer object-end surface, an object-end hole and an inner annular object-end surface. The image-end portion includes an outer image-end surface, an image-end opening and an inner annular image-end surface. The tube portion connects the object-end portion and the image-end portion, and includes a plurality of inclined surfaces. The wedge structures are disposed on at least one surface of the inner annular object-end surface, the inner annular image-end surface and the inclined surfaces, wherein the wedge structures are regularly arranged around the central axis, and each of the wedge structures includes an acute end and a tapered section. The tapered section connects the surface, which the wedge structure is disposed on, and the acute end.

Abstract: A light converter and method of manufacture is provided. A light conversion layer (301), comprising light conversion particles (301a) in a binding material (301b) is provided for generating emission light from excitation light incident on the light conversion layer (301). A planarization layer (304) is on a surface of the light conversion layer (301) and at least one optical coating (305) is part of or on a surface of the planarization layer (304) that is relatively smooth in comparison with the surface of the light conversion layer (301).

Abstract: A virtual visor system is disclosed that includes a visor having a plurality of independently operable pixels that are selectively operated with a variable opacity. A camera captures images of the face of a driver or other passenger and, based on the captured images, a controller operates the visor to automatically and selectively darken a limited portion thereof to block the sun or other illumination source from striking the eyes of the driver, while leaving the remainder of the visor transparent. The virtual visor system advantageously detects whether the driver of other passenger is performing particular head gestures and updates the optical state of the visor using suitable modified procedures that accommodate the intent or goals of the driver or other passenger that are inferred from the predefined head gesture. In general, the modified procedures reduce distracting or frustrating updates to the optical state of the visor.

Abstract: Disclosed is a cover for an electronic device and includes a transparent substrate including a first surface and a second surface opposite to the first surface, a pattern layer having a first color and formed on a first area and a second area of the second surface of the transparent substrate, the pattern layer including one or more holes formed in a portion of the pattern layer corresponding to the second area, a light reflection layer formed beneath the pattern layer and including a reflecting surface facing the pattern layer, and a color layer having a second color different than the first color, the color layer being formed between the pattern layer and the light reflection layer, wherein the reflecting surface is formed such that light reflected on the reflecting surface passes through the color layer and at least a portion of the one or more holes.

Abstract: According to one embodiment, a display device includes a backlight source, liquid crystal panel, and color separating element substrate. The liquid crystal panel includes an adherence area with a predetermined width in a peripheral part of the transparent material substrate in the incident surface side of the backlight, and the color separating element substrate includes a step with a predetermined height, in the peripheral part of the surface opposed to the liquid crystal panel, and an upper surface of the step of the color separating element substrate and the adherence area of the transparent material substrate of the liquid crystal panel are adhered through a film therebetween.

Abstract: A portable communication device may include a display, a back panel that is disposed below the display, a support member that is disposed below the back panel, a sensor that is disposed such that at least a portion of the sensor faces a back surface of the display through a sensor hole formed at the support member, a first adhesive member that adheres at least a portion of the sensor on one side of the support member, and a second adhesive member that is disposed between the sensor (or a sensor structure including the sensor) and the sensor hole.

Abstract: The present disclosure relates to a solid-state imaging device capable of further decreasing reflectivity, a method of manufacturing the same, and an electronic device. The solid-state imaging device includes a semiconductor substrate on which a photoelectric converting unit is formed for each of a plurality of pixels, and an antireflection structure provided on a light incident surface side from which light is incident on the semiconductor substrate in which a plurality of types of projections of different heights is formed. The antireflection structure is formed by performing processing of digging a light incident surface of the semiconductor substrate in a plurality of stages with different processing conditions. The antireflection structure is the structure in which a second projection lower than a first projection is formed between the first projections of predetermined height. The present technology may be applied to a CMOS image sensor, for example.

Abstract: To provide a glass resin laminate of the present invention, in which the glass substrate and the resin layer containing a TFE polymer are strongly laminated, is hardly warped and is excellent in the electrical properties, a composite laminate further having a metal foil, and methods for producing them. A glass resin laminate comprising a glass substrate 10 having an uneven surface 12 with an arithmetic mean roughness of at least 5 nm, and a resin layer containing a tetrafluoroethylene polymer in contact with the uneven surface 12, wherein the uneven surface 12 has specific convex portions 21 and 22 which narrow at at least a part of the root portion as compared with the tip portion.

Abstract: Gloss of a surface having a concave-convex structure is measured, and R/V, which is a ratio of a diffuse specular reflection intensity R to a sum total V of diffuse reflection intensities (in formula, the diffuse specular reflection intensity R represents a diffuse reflection intensity measured at an aperture angle of 1 degree by a variable-angle photometer in a diffuse specular reflection direction when visible light is radiated, at an angle of 45 degrees from a normal line, to the surface having the concave-convex structure of the anti-glare film, and the sum total V of diffuse reflection intensities represents a sum total of diffuse reflection intensities measured at an aperture angle of 1 degree by a variable-angle photometer for every 1 degree from ?45 degrees up to 45 degrees, including 0 degrees, with respect to the diffuse specular reflection direction when visible light is radiated, at an angle of 45 degrees from a normal line, to the surface having the concave-convex structure of the anti-glare film

Abstract: The antiglare film of the present invention is provided with an antiglare layer having a haze value set in a range from 0.5% to 20%, transmission image clarity at an optical comb width of 0.5 mm is a value in a range from 60% to 96%, and, in a state where the antiglare film is mounted on a surface of a display, a standard deviation of luminance distribution of the display is a value in a range from 0 to 12.

Abstract: The present disclosure relates to a layered optical composite, in particular for use in an augmented reality device. In particular, the disclosure relates to a layered optical composite and a process for its preparation, a device comprising the layered optical composite and a process for its preparation, and the use of a layered optical composite in an augmented reality device. The present disclosure relates to a layered optical composite comprising: a. a substrate having a front face and a back face, b. a coating comprising: i. a type T layer, and ii. a type C region comprising one or more type C layers; in which the substrate has: i. a thickness tG in the range from 0.2 to 1.2 mm; ii. a refractive index nG at a wavelength ? in the range from 1.6 to 2.4; and iii. an optical absorption coefficient KG at the wavelength ? of less than 10 cm?1; in which the type C layers individually and independently have: i. a thickness tC in the range from 9 to 250 nm; ii.

Abstract: Embodiments of a vehicle interior system are disclosed. In one or more embodiments, the system includes a base with a curved surface, and a display or touch panel disposed on the curved surface. The display includes a cold-bent glass substrate with a thickness of 1.5 mm or less and a first radius of curvature of 20 mm or greater, and a display module and/or touch panel attached to the glass substrate having a second radius of curvature that is within 10% of the first radius of curvature. Methods for forming such systems are also disclosed.

Abstract: The light emitting device includes a substrate, and a laminated structure provided to the substrate, and including a plurality of columnar parts, wherein the columnar part includes a first semiconductor layer, a second semiconductor layer different in conductivity type from the first semiconductor layer, and a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer, the laminated structure includes a third semiconductor layer which is connected to an opposite side to the substrate of the second semiconductor layer, and is same in conductivity type as the second semiconductor layer, the second semiconductor layer is disposed between the light emitting layer and the third semiconductor layer, the third semiconductor layer is provided with a recessed part, an opening of the recessed part is provided to a surface at an opposite side to the substrate side of the third semiconductor layer, and a diametrical size in a bottom of the recessed part is smaller than a diamet

Abstract: The present invention relates to an anti-reflective film including: a hard coating layer; and a low refractive index layer containing a binder resin containing a copolymer of a polyfunctional (meth)acrylate-based monomer, and inorganic particles dispersed in the binder resin, wherein the polyfunctional (meth)acrylate-based monomer includes a 2- to 4-functional (meth)acrylate-based monomer and a 5- to 6-functional (meth)acrylate-based monomer in a weight ratio of 9:1 to 6:4, and a polarizing plate and a display apparatus using the same.

Abstract: A spacer, including a spacer body, a light transmissive film, and a light absorbing film, is provided. The spacer body has an outer side surface, an inner inclined surface, an object side surface, and an image side surface. The object side surface faces an object side and connects the outer side surface with the inner inclined surface. The image side surface faces an image side and connects the outer side surface with the inner inclined surface. The inner inclined surface is located between an optical axis of the spacer and the outer side surface, and includes an inner edge adjacent to the optical axis and an outer edge away from the optical axis. The inner edge forms a light through hole. The light transmissive film and the light absorbing film are disposed on the inner inclined surface. All surfaces facing the optical axis are inclined relative to the optical axis.

Abstract: The present invention describes articles comprising a substrate including opposed front and back surfaces, wherein the front surface and the back surface each comprise surface structures that are randomly oriented on each surface, wherein the front surface and the back surface each have a surface roughness and a gloss value, and wherein the surface roughness of the front surface does not equal the surface roughness of the back surface and/or the gloss value of the front surface does not equal the gloss value of the back surface. Display system stacks utilizing the described articles are also provided.

Abstract: A switchable privacy display apparatus comprises a spatial light modulator, a light control film, and a polar control retarder that comprises plural retarders arranged between a display polariser of the spatial light modulator and an additional polariser. The display achieves high image visibility to an off-axis user in a public mode of operation and high image security to an off-axis snooper in privacy mode of operation.

Abstract: Embodiments of the present invention include a device for removing energy from a beam of electromagnetic radiation. Typically, the device can be operatively coupled to a turbidity measuring device to remove energy generated by the turbidity measuring device. The device can include a block of material having one of a plurality of different shapes coated in an energy absorbing material. Generally, the device can include an angled or rounded energy absorbing surface where the beam of electromagnetic radiation can be directed. The angled or rounded energy absorbing surface can be configured to deflect a portion of the beam of electromagnetic radiation to a second energy absorbing surface.

Abstract: Provided is a transparent member having fine uneven portions, which is applied to a portable device, has a reduced thickness and improved concealment, and reduces a haze and a step caused by a print layer. The transparent member includes an attachment layer applied to a transparent substrate or an anti-scattering film. The transparent substrate or the anti-scattering film, which is translucent due to the fine uneven portions, becomes transparent due to the attachment layer that penetrates into a space between the fine uneven portions.

Abstract: Provided is a supporting element having an object-side mechanical surface, an image-side mechanical surface, an inner-side connecting surface having a first and a second plane inner walls extending from at least one of the object-side and the image-side mechanical surfaces, and an outer-side connecting surface having a first and a second outer cutting surfaces respectively adjacent to the first and the second plane inner walls. The supporting element satisfies the following conditional expression. 4?R/SD?30. R represents half of a distance between the first and the second outer cutting surfaces. SD represents a smaller one of a first and a second distances, the former being the minimum distance between the first outer cutting surface and the first plane inner wall, the latter being the minimum distance between the second outer cutting surface and the second plane inner wall. A portable optical imaging lens is also provided.

Abstract: An array of microstructures or frustums on a substrate for reducing glare for electronic device displays or windows. The microstructures are designed to nearly perfectly align with the pixels on the display to avoid adverse viewing effects, such as Moiré effects. Substantially all light from the environment illuminating the front side of the film containing the microstructures from all angles is not reflected to the primary viewer (often viewing at an angle normal to the film). Light illuminating the microstructure from the environment will reflect off the microstructures at angles greater than a defined threshold outside the primary viewers field of view. Thus, glare to the primary viewer is minimized while glare to other views who view from other angles than the primary viewer is increased. This increased glare for other viewers adds privacy for the viewing by the primary viewer.

Abstract: A display device is provided, and includes a display panel, a multi-layered polarizer layer, and a cover layer. The multi-layered polarizer layer is disposed on the display panel. The cover layer is coated on the multi-layered polarizer layer.

Abstract: Systems and apparatus for a bezel assembly for a heads-up display (HUD) unit located in an instrument panel of a vehicle, the instrument panel being adjacent to a front windshield of the vehicle. The bezel assembly includes a bezel having a rear edge aligned with a front edge of the instrument panel and an interior border defining a bezel opening. The bezel assembly also includes a chute located beneath the bezel and above the HUD unit. The chute includes an exterior border defining a top chute opening aligned with the bezel opening, and an interior border defining a bottom chute opening aligned with a display screen of the HUD unit and having a shape corresponding to the display screen of the HUD unit.

Abstract: Provided is a lens module, including a lens barrel and a lens group. The lens barrel includes a first barrel wall and a second barrel wall. The lens group at least include a first lens and a second lens. The first barrel wall has an image-side surface, including a first planar surface horizontally extending from a joint between the first barrel wall and the second barrel wall towards an optical axis, a protruding portion connected to the first planar surface and protruding towards the first lens, and a second planar surface horizontally extending from the protruding portion towards the optical axis. The first lens has a first peripheral portion, including a third planar surface, a recess portion connected to the third planar surface and a fourth planar surface connected to the recess portion. The protruding portion is attached to the recess portion.

Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit configured to emit light, a display panel positioned in front of the backlight unit, and an optical film positioned in front of the display panel. The optical film includes a base layer positioned adjacent to the display panel, a first refractive layer positioned in front of the base layer and having a pattern including a first inclined portion totally reflecting some of light waves emitted from the backlight unit, and a second refractive layer positioned in front of the first refractive layer and having a lower refractive index than the first refractive layer.

Abstract: A fingerprint recognition device includes a first substrate and at least one photosensitive detector on the first substrate, each of the at least one photosensitive detector including a first electrode, a photosensitive layer on the first electrode, and a second electrode on the photosensitive layer. A side of the photosensitive layer facing away from the first electrode has a curved shape.

Abstract: A mirror magnifying attachment sheet apparatus for magnifying a portion of a mirror includes a magnifier body having a body back side, a body front side, and a body perimeter. The magnifier body is transparent and the body front side is convex to create a magnifying effect. The magnifier body is sufficiently flexible to be rolled for storage and transport. The body back side selectively engages a mirror. A storage tube has an open tube top side to receive the magnifier body. A cap is selectively engageable with the open tube top side of the storage tube.

Abstract: A photographing module includes an imaging lens assembly. The imaging lens assembly includes a plurality of lens elements, wherein one of the lens elements is a plastic lens element. At least one surface of an object-side surface and an image-side surface of the plastic lens element includes an effective optical portion and a peripheral portion. The peripheral portion surrounds the effective optical portion, and includes a plurality of rib structures, a first fitting section and an isolation section. Each of the rib structures has a strip shape along a radial direction of an optical axis of the imaging lens assembly, and the rib structures are arranged around the effective optical portion. The first fitting section surrounds the effective optical portion, and is connected to another one of the lens elements adjacent to the surface. The isolation section is disposed between the rib structures and the first fitting section.

Abstract: A lens barrel including a first main shaft and a first sub-shaft that guide the movement of a third front lens group (G3a), a second main shaft and a second sub-shaft that guide the movement of a fourth lens group (G4), a hall element that is used to detect the position of the third front lens group (G3a), and an MR sensor that is used to detect the position of the fourth lens group (G4) are disposed on a straight line passing through an optical axis in a cross section orthogonal to the optical axis. The first main shaft and the second main shaft overlap each other in a direction of the optical axis. In a drive unit for each lens group, a plurality of drive magnets are arranged symmetrically with respect to the straight line.

Abstract: The present invention relates to an anti-reflective film exhibiting one or more peaks (qmax) at a scattering vector of 0.0758 to 0.1256 nm?1, in a graph showing a log value of scattering intensity to a scattering vector defined in small-angle X-ray scattering.

Abstract: The present invention relates to an anti-reflective film exhibiting one or more peaks (qmax) at a scattering vector of 0.0758 to 0.1256 nm?1, in a graph showing a log value of scattering intensity to a scattering vector defined in small-angle X-ray scattering.

Abstract: In a first aspect, a low haze polymer film includes a polymer and a refractive index-matching nanoparticle aggregate. The polymer includes a polyimide, a polyamide imide or a polyester imide, and the refractive index-matching nanoparticle aggregate includes a first nanoparticle having a refractive index that is less than the refractive index of the polymer and a second nanoparticle having a refractive index that is greater than the refractive index of the polymer. A difference in the refractive indices of the polymer and the refractive index-matching nanoparticle aggregate is less than 0.1, and the low haze polymer film has a thickness in a range of from 1 to 150 ?m and a haze of less than 4%. In a second aspect, an electronic device includes the low haze polymer film of the first aspect.

Abstract: A semiconductor device package includes a first substrate and a second substrate arranged above the first substrate. A first connector is disposed on the first substrate, and a first conductor passes through the second substrate and connects to the first connector.

Abstract: An information processing apparatus includes a first detection unit configured to detect a first object located on a first direction side of a refracting surface from an image obtained by an imaging apparatus located on the first direction side, a second detection unit configured to detect a second object located on a second direction side of the refracting surface from an image obtained by an imaging apparatus located on the second direction side, an obtaining unit configured to obtain position information indicating at least either one of a positional relationship between the first and second objects and positions of the first and second objects, and an identification unit configured to identify positions of the plurality of imaging apparatuses in a common coordinate system, based on a result of detection performed by the first detection unit, a result of detection performed by the second detection unit, and the position information.