Abstract: A lens driving device having a housing, a bobbin disposed in the housing, a first coil disposed on an outer surface of the bobbin, a first magnet disposed on the housing, a second magnet disposed on the bobbin, and a first position sensor disposed opposite to the second magnet in order to sense the second magnet. The bobbin has a first seating groove. The second magnet is disposed in the first seating groove. A lower portion of the second magnet overlaps with the first coil in a direction perpendicular to an optical axis. The lower portion of the second magnet is disposed between the first coil and the housing.

Abstract: An optical member driving mechanism is provided, including a movable module, a first driving module, and a position detecting module. The movable module includes an optical member holder and a housing. The first driving module includes a first electromagnetic driving assembly disposed on the optical member holder and a second electromagnetic driving assembly disposed on the housing. The first driving module can drive the optical member holder to move relative to the housing. The position detecting module includes a magnetic member and a position detector. The magnetic member is disposed on the optical member holder. The position detector can detect the position of the optical member holder relative to the housing according to a variation in magnetic field direction.

Abstract: The present invention relates to the field of optical lenses, and provides a camera optical lens, including, from an object side to an image side, a first lens having a positive refractive power, a second lens a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, and a fifth lens. At least one of the first lens to the fifth lens has a free-form surface, and the camera optical lens satisfies: 0?R7; and R10?0, where R7 denotes a central curvature radius of an object side surface of the fourth lens, and R10 denotes a central curvature radius of an image side surface of the fifth lens. The camera optical lens provided by the present invention satisfies design requirements of a long focal length and ultra-thinness while having excellent optical performance.

Abstract: Provided is a camera optical lens including, sequentially from an object side to an image side: a first lens having a negative refractive power; a second lens having a refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a refractive power; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power. At least one of the first to seventh lenses comprises a free-form surface. The camera optical lens satisfies following conditions: ?3.00?f4/f3??1.00; 2.90?d9/d10?8.50; and 2.00?d11/d12?15.00. The camera optical lens can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses.

Abstract: A photographing optical 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, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. The second lens element has positive refractive power. The eighth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the eighth lens element has at least one convex shape in an off-axis region thereof, and both an object-side surface and the image-side surface thereof are aspheric. The photographing optical lens system has a total of eight lens elements. An air gap in a paraxial region is located between every two lens elements of the photographing optical lens system that are adjacent to each other.

Abstract: Various embodiments include a camera having one or more bumper arrangements to cushion lateral movement of one or more camera components. In some embodiments, the bumper arrangement(s) may cushion lateral movement of a moveable platform as the moveable platform approaches a stationary structure. According to some embodiments, the bumper arrangement(s) may include one or more bumper features attached to (and/or defined by) the moveable platform and/or the stationary structure.

Abstract: A camera module includes a housing; a plurality of movable lens modules disposed in an internal space of the housing and configured to be movable in an optical axis direction, each of the plurality of movable lens modules comprising at least one lens; and a stopper configured to prevent contact between at least two of the plurality of movable lens modules, wherein the stopper includes a frame mounted on the housing; an extension portion extending from the frame into the internal space of the housing to face a side of one movable lens module of the plurality of movable lens modules in the optical axis direction; and a damping member disposed on the extension portion to face the side of the one movable lens module in the optical axis direction.

Abstract: A lens barrel having one end and the other end includes: a first frame that is movable and holds optical members; a second frame that is arranged to be relatively movable toward the other end with respect to the first frame, and holds optical members; and a third frame that is mounted on the first frame so as to be movable, and holds an optical member. The first frame includes a first stopper portion that comes into contact with the third frame to limit movement toward the one end. The first frame includes a second stopper portion that comes into contact with, when the first frame is most distant from the second frame, the third frame to limit movement toward the other end. The second frame includes a third stopper portion that has a contact surface located close to the one end with respect to the second stopper portion, and that comes into contact with, when the second frame is located within a range on the optical axis where the third frame is movable, the third frame to limit movement toward the other end.

Abstract: An optical system includes, 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, an intermediate unit including one or more lens units, and a final lens unit having a negative refractive power. The second lens unit is moved toward an image plane, and a lens unit closest to the image plane in the one or more lens units included in the intermediate unit is moved toward the object in focusing from infinity to a short distance. The second lens unit satisfies a predetermined inequality.

Abstract: A lens apparatus includes a first barrel configured to hold a first lens unit, a fixed barrel configured to hold a final lens unit, a focus lens unit driven by an actuator, and a positioning mechanism configured to determine positions of the first barrel and the fixed barrel in a rotational direction around an optical axis. The first barrel and the fixed barrel are directly connected, and the actuator and the focus lens unit are provided in a space formed by the first barrel and the fixed barrel.

Abstract: A lens apparatus of which an image side part is detachably mountable to an accessory includes a lens unit that includes a lens disposed closest to the image side part and a holding member that holds the lens, and is movable in an optical axis direction, and a restrictor configured to restrict a movement of the lens unit. When the lens unit is located at a first position, the accessory is not mountable to the lens apparatus, and when the lens unit is located at a second position, the accessory is mountable to the lens apparatus. The restrictor restricts the lens unit from moving without bringing the lens unit into contact with the accessory when the accessory is attached to the lens apparatus.

Abstract: A camera module includes a housing having an internal space, a reflecting module including a reflecting member on a movable holder movably supported by an inner wall of the housing in the internal space, and a lens module disposed behind the reflecting module in the internal space, and including lenses aligned in an optical axis direction so that light reflected by the reflecting member is incident thereto. The movable holder is configured to move the reflecting member in a first axis direction approximately perpendicular to the optical axis direction and a second axis direction approximately perpendicular to the optical axis direction and the first axis direction with respect to the housing. The lens module includes at least two lens barrels disposed on sidewalls of the housing, linearly movable in approximately the optical axis direction, and including the lenses divided and disposed therein.

Abstract: An embodiment comprises: a housing including first side parts and second side parts; a bobbin arranged inside the housing, and including first side parts corresponding to the first side parts of the housing and second side parts corresponding to the second side parts of the housing; a first coil arranged on an outer surface of the bobbin; a first magnet arranged on the first side parts of the housing; a second magnet arranged on any one among the second side parts of the bobbin; and a position sensor arranged on any one of the second side parts of the housing, and sensing a strength of the magnetic field of the second magnet, wherein the second magnet is located outside the first coil, and the outside of the first coil is an opposite side of a central side of the bobbin on the basis of the first coil.

Abstract: This disclosure describes an afocal attachment that allows for alteration of received electromagnetic radiation (or “light”) prior to entry into the telescope. For example, a rifle scope may have a base magnification of 2×, and the afocal attachment may allow magnification of a received image at levels ranging from 2× to 4×. In this example, the entire telescope system with the afocal attachment installed will have an overall magnification of 4× to 8×. In another example, the magnification of the telescope can be increased, transforming a telescope with a 4× magnification into a telescope with a higher effective magnification. In some instances the afocal attachment's optical axis can be configured to permit independent adjustment, allowing for easy removal and reinstallation of the afocal attachment without a need to re-adjust the telescope itself.

Abstract: A lens device includes: a movable lens capable of being moved in a direction of an optical axis; a target position information acquiring unit that acquires information of a target position of the movable lens; a target position information transmitting unit that transmits the information of the target position to a movable lens operation device including a movable operating member for moving the movable lens and an operating member driving unit that drives the operating member; and a movable lens driving unit that performs first driving for moving the movable lens based on a position of the operating member detected by an operating member position detection unit that detects the position of the operating member, and the operating member driving unit drives the operating member based on the information of the target position.

Abstract: Provided is a lens unit. A second lens is provided with a flange surface section that surrounds a lens surface. An image-side flange surface has an image-side flange surface inner-circumferential section which is shaped like a ring-shaped groove, and also has a ring-shaped image-side flange surface outer-circumferential section formed to the outside of the inner-circumferential section. The image-side flange surface inner-outer circumferential section is coated with black ink. The image-side flange surface outer-circumferential section is provided with boss-shaped positioning surface at six equidistant locations along the outer circumference. Ejector pin contact sections are formed between adjacent positioning surface, and said contact sections contact the ejector pins at the time of separation from the mold during resin molding.

Abstract: Provided are a device and method for molding an FPC and a plastic part, which belongs to the field of FPC processing technology. The method for molding an FPC and a plastic part includes preprocessing a preform and connecting an FPC to the outer cylindrical surface of the preform; and forming a coating on the outer cylindrical surface of the preform by using the device for molding an FPC and a plastic part.

Abstract: A lens module, including: a lens barrel having a receiving space, a set of lenses received in the receiving space, the set of lenses including at least a first lens and a second lens close to the first lens, and a positioning structure fixing the first lens to the second lens. The first lens includes a first optical portion for imaging and a first fixing portion surrounding the first optical portion, and the second lens includes a second optical portion for imaging and a second fixing portion surrounding the second optical portion. The positioning structure includes a positioning part arranged on one of the first fixing portion and the second fixing portion, and a holding part arranged on the other one of the first fixing portion and the second fixing portion. The holding part holds the positioning part.

Abstract: A camera module includes a lens module including lenses and a reflecting module disposed in front of the lens module. The reflecting module is configured to change a path of light to direct the light toward the lens module. The reflecting module includes a holder in which a reflecting member configured to change the path of the light is mounted and a first housing supporting the holder. The holder is configured to slide with respect to the first housing to enable rotation of the reflecting member with respect to a first axis and a second axis.

Abstract: The invention relates to a long-range optical device comprising at least one sight channel and an image capturing channel with a camera module, wherein the sight channel and the image capturing channel are coupled to one another by means of an adjusting mechanism such that a first image detail observed in the sight channel essentially corresponds to a second image detail captured by the camera module; at least one interface module for establishing a connection with an electronic terminal; a processing unit; at least one memory unit, wherein the memory unit is formed for storing parameters and/or functions, wherein an electronic operating button is provided for retrieving a preselected parameter and carrying out a function. The invention moreover relates to an observation and image capturing system and a method for the retrieval of parameters and/or the execution of functions with an observation and image capturing system.

Abstract: A system and method are provided for utilizing a focus state calibration object for determining calibration data for a variable focal length (VFL) lens system which includes a VFL lens (e.g., a tunable acoustic gradient lens). The calibration object includes a planar tilted pattern surface on which a set of focus state reference regions (FSRRs) are distributed (e.g., a tilted grating). The FSRRs have known geometric relationships relative to the planar tilted pattern surface and have known region relationships relative to one another. A plurality of camera images is acquired at different phase timings of the periodic modulation, and calibration data is determined based at least in part on analyzing the plurality of camera images. The determined calibration data indicates respective phase timings of the periodic modulation that correspond to respective effective focus positions of the VFL lens system.

Abstract: An optical unit includes: a first actuator for driving a first movable barrel; a second actuator for driving a second movable barrel; a first contact surface for defining a first frontmost end position which the first movable barrel takes; a second contact surface for defining a rearmost end position which the first movable barrel takes; a third contact surface for defining a frontmost end position which the second movable barrel takes; a fourth contact surface for defining a rearmost end position which the second movable barrel takes; and a contact member formed on the first movable barrel, having a fifth contact surface which is brought into contact with a distal end surface of the second movable barrel, and defining a first stop position or a second stop position.

Abstract: A zoom lens, comprises: in order from an object, a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; a third lens group (G3) having positive refractive power; a fourth lens group (G4) having negative refractive power; and a fifth lens group (G5) having positive refractive power, wherein, upon zooming from a wide-angle end state to a telephoto end state, a distance between each of lens groups and a lens group adjacent thereto changes to satisfy the following conditional expression: 2.90<|MV5/MV2|<11.50 where, MV5 denotes, upon zooming from a wide-angle end state to a telephoto end state, a moving amount of the fifth lens group with an image surface as a reference; and MV2 denotes, upon zooming from the wide-angle end state to the telephoto end state, a moving amount of the second lens group with the image surface as the reference.

Abstract: A zoom lens, comprises: in order from an object, a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; a third lens group (G3) having positive refractive power; a fourth lens group (G4) having negative refractive power; and a fifth lens group (G5) having positive refractive power, wherein, upon zooming from a wide-angle end state to a telephoto end state, a distance between each of lens groups and a lens group adjacent thereto changes to satisfy the following conditional expression: 2.90<|MV5/MV2|<11.50 where, MV5 denotes, upon zooming from a wide-angle end state to a telephoto end state, a moving amount of the fifth lens group with an image surface as a reference; and MV2 denotes, upon zooming from the wide-angle end state to the telephoto end state, a moving amount of the second lens group with the image surface as the reference.

Abstract: An apparatus controlling a position of a camera module includes an operating coil disposed on a housing of the camera module to face a magnetic member disposed on a lens barrel of the camera module, a driving circuit providing a driving current to the operating coil, a capacitor circuit having a capacitor value to form a resonance circuit together with the operating coil to resonate at a resonance frequency varied depending on an inductance value of the operating coil; a resonance maintaining circuit maintaining a level of a resonance signal generated by the operating coil and the capacitor circuit, a resonance frequency detecting circuit detecting a resonance frequency signal from the resonance signal generated by the operating coil and the capacitor circuit, and a control circuit configured to control the driving circuit in response to the resonance frequency signal from the resonance frequency detecting circuit.

Abstract: A lens barrel includes a stationary barrel, a rotary barrel, and a movable barrel. The movable barrel includes a cam follower fitted to a straight groove in the stationary barrel and a cam groove in the rotary barrel. The surface of the cam follower to be in contact with the inner wall surface of the cam groove and the surface of the cam follower to be in contact with the inner wall surface of the straight groove have an arc shape convex toward the outside, and the cam follower is in point contact with the inner wall surfaces of the cam groove and the straight groove. The cam follower includes a first slit that is cut in from the distal end toward a proximal end thereof in parallel to an axis and a second slitcut in from an outer peripheral portion of the cam follower toward an inner peripheral portion.

Abstract: A linear driving mechanism capable of moving a driven object smoothly and lengthening its service life. A first vibration element and a second vibration element sandwich a friction member therebetween. A first holding member holding the first vibration element is rotatably supported by a first shaft. A second holding member holding the second vibration element is rotatably supported by a second shaft. An urging part moves the first holding member and the second holding member to press these vibration elements against the friction member. A coupling member couples the first holding member with a driven object. A pressing part presses the coupling member against a moving body including the first and second holding members. A direction of a pressing force of the pressing part intersects with the first shaft when the coupling member couples with the first holding member.

Abstract: A photographing optical lens assembly includes lens elements including, in order from an object to an image side, a first lens group, a second lens group and a third lens group. The first lens group includes a first lens element and a second lens element. The second lens group includes a third lens element, a fourth lens element and a fifth lens element. The third lens group includes a sixth lens element, a seventh lens element and an eighth lens element. The first lens element has positive refractive power. The seventh lens element has an object-side surface and an image-side surface being both aspheric. The eighth lens element has an image-side surface being concave in a paraxial region thereof, wherein both an object-side surface and the image-side surface thereof are aspheric, and the image-side surface of the eighth lens element has at least one reflection point.

Abstract: A camera lens assembly is described. The camera lens assembly includes a support member. The camera lens assembly also includes a moving member having a major planar surface and AF terminal pads located at or near the major planar surface, wherein the moving member is mounted to the support member. And, the camera lens assembly includes an auto focus assembly having AF terminal pads, wherein the auto focus assembly is mounted to the moving member and the AF terminal pads of the auto focus assembly are electrically connected to the AF terminal pads of the moving member.

Abstract: An embodiment relates to a camera module comprising: a lens module which generates an optical image of an object; a circuit board unit which processes the optical image generated by the lens module and has elements mounted on first and second surfaces thereof; and a cable unit which supplies power to the circuit board unit, wherein the circuit board unit comprises a connector coupled to the cable unit, and wherein the camera module is arranged between the connector and the circuit board unit and fixes the connector on the circuit board unit.

Abstract: An imaging lens assembly has an optical axis and includes a plastic barrel, a lens set and a retaining element. The plastic barrel includes a first channel and a second channel. The lens set is disposed in the plastic barrel and includes at least one adjustable lens element, wherein an outer diameter surface of the adjustable lens element includes a plurality of axial rotation structures, each of the axial rotation structures is in a protruding strip shape, and at least one of the axial rotation structures is disposed correspondingly to the second channel of the plastic barrel and exposed. The retaining element is disposed in the plastic barrel and includes an anti-releasing structure, which is disposed correspondingly to the first channel of the plastic barrel to avoid the lens set being released from the plastic barrel.

Abstract: An optical unit includes: a fixing part including a front frame portion, a rear frame portion, and a fixing part main body; a movable part arranged slidably relative to the fixing part main body; and a voice coil motor including a magnetic portion, and a coil arranged at the fixing part main body and positioned on a radially outer side of the fixing part main body with respect to the magnetic portion, the voice coil motor being capable of moving the movable part relative to the fixing part main body along a direction of the optical axis. A maximum dimension of the fixing part main body in a first direction parallel to a magnetization direction of the magnetic portion is greater than a maximum dimension of the fixing part main body in a second direction perpendicular to the first direction and the direction of the optical axis.

Abstract: A lens moving mechanism includes a first lens guide unit which guides a lens mount, on which a lens for projecting light is mounted, in two orthogonal axis directions among three orthogonal axis directions including an optical axis direction of the light. The first lens guide unit includes a first track rail and a second track rail which are disposed to intersect each other in the two orthogonal axis directions, and one or a plurality of slider blocks which are mounted to be relatively movable on both or either of the first track rail and the second track rail. The one or plurality of slider blocks are disposed at an intersecting portion between the first track rail and the second track rail in one axis direction orthogonal to the two orthogonal axis directions, or are disposed to at least partially overlap each other in the one axis direction.

Abstract: Various embodiments include a damper arrangement that may be used to dampen motions of a dynamic component. In some embodiments, the damper arrangement may be used in a camera module that includes a stationary component and a dynamic component. For instance, the dynamic component may hold a lens such that the lens moves together with the dynamic component. In various examples, the damper arrangement may include an interface member that extends from the stationary component or the dynamic component to at least partially into a viscoelastic material within a pocket configured in the stationary component, the dynamic component, or both. The interface member may be configured to traverse within the viscoelastic material to dampen motion of the dynamic component, for example, during operation of a lens actuator to move the dynamic component along an optical axis of the lens.

Abstract: An optical sensor housing includes a sensor housing body including an enclosure wall upstanding from a bottom portion and a substantially open top portion defining a cavity in which the optical sensor assembly is located, at least one aperture, and at least one engaging part projecting orthogonally from an outside surface of the sensor housing body, a sensor housing cover including an open central portion, at least one integrally molded compliant flange configured to engage the sensor housing body engaging part and to secure the sensor housing cover to the sensor housing body, and longitudinal ridges extending outwardly and disposed substantially along the length of the sensor housing cover. The sensor housing engaging parts and flanges can provide a quick-lock mechanism operable to secure the sensor housing cover to the sensor housing body without the use of tools or fasteners.

Abstract: An imaging module of the invention includes: an image-sensing unit that includes an image-sensing device; a lens that has a front end and is optically connected to the image-sensing device; and a frame that is fixed in position with respect to the image-sensing device and includes a lens barrel having an insertion space, into which the front end is to be inserted in at least an optical axis direction. In a state where movement of the lens in a direction intersecting with the optical axis direction is limited, the insertion space is capable of receiving the lens in the direction such that the lens approaches the image-sensing device. The lens is fixed to the lens barrel at a position at which the lens is optically connected to the image-sensing device.

Abstract: At least one embodiment of an optical system includes, in order from an object side to an image side, a front unit having a plurality of lenses, an aperture stop, and a rear unit having a positive refractive power. In at least one embodiment, a positive lens and three or more negative lenses are disposed in the front unit, and the material of negative lenses included in the front unit, the focal length of the front unit, and the focal length of the entire optical system are set appropriately.

Abstract: An imaging apparatus of the disclosure includes a base that has a power transmitter for transmitting power wirelessly; and a movable unit that has a power receiver for receiving power wirelessly from the power transmitter, an imager operating on the basis of power received by the power receiver, and a first communicator transmitting image information acquired by the imager wirelessly. The movable unit is movable relative to the base. According to the disclosure, it is possible to improve reliability of transmission and reception of a signal and power, and it is possible to alleviate deficiency due to limitation on the number of operation times caused by a mechanical contact.

Abstract: Systems are presented with special mechanical means to switch a set of lens elements to form a compound lens from a storage position to an imaging position. In the storage mode, these arrangements offer highly efficient space saving schemes suitable for use in application where space is a premium. In the imaging mode, a plurality of lens singlets are brought together on a common imagine axis whereby they operate to form very high quality images at a single image plane. Singlet lenses are held in a lens mount device of a disk element. A plurality of similar cooperating disk elements move against adjacent coupled disks to cause well-regulated desirable motion and positioning. Specifically, portions of the disk include a cam system which permits smooth movement as disk elements are counter rotated with respect to each other thus driving the preferred positioning.

Abstract: The imaging apparatus to which an interchangeable lens is mountable includes an imaging device, a shake detector that detects a shake amount of the imaging apparatus, an image stabilization unit that performs an image stabilization operation by moving the imaging device based on the detected shake amount and a focal length of the interchangeable lens, a display unit that displays a setting screen for inputting focal length information item of the interchangeable lens, and a controller that controls the display unit and the image stabilization unit. The controller reflects the focal length information item displayed in the setting screen in the image stabilization operation performed by the image stabilization unit while causing the display unit to display and overlay the setting screen on a live view image.

Abstract: In order to align the various components of an instrument, the beam produced by a spectrally-controlled light source is aligned with the optical axis of the instrument and the first component is placed at its predetermined position along the optical axis. Then, configuring the spectral modulation of the source such that one surface of the component is used as the reference surface, the spectrum of the source is modulated so as to produce a correlogram formed by reflections from the reference surface and from the other surface of the optical component. The correct alignment of the component is determined by adjusting its position so as to cause the correlogram to conform to the bullseye configuration that meets predetermined design parameters. The procedure is repeated with each other component of the instrument, the alignment of each component being based on interference fringes created independently of other components.

Abstract: A lens barrel includes a tubular first fixing cylinder holding a lens group having one or more lenses, and a tubular second fixing cylinder fixedly coupled to one axial end part of the first fixing cylinder so that an axial direction thereof extends along that of the first fixing cylinder, and the second fixing cylinder is made of synthetic resin.

Abstract: Provided is a collapsible lens barrel including a base barrel, a drive device including a linear motion member reciprocating in an optical axis direction and a drive source for driving the linear motion member, a cam frame provided with a cam groove, a drive device frame that is engaged with the cam groove and causes the drive device to reciprocate in the optical axis direction, a focus lens group frame that holds a focus lens group, and a contact part and an arm that extend from the focus lens group frame toward an object side and are engaged with the linear motion member to cause the focus lens group frame to reciprocate in the optical axis direction.

Abstract: Multiple cameras are used for tool positioning, as-built documentation, and/or personnel monitoring in construction site. A camera unit comprises one or more imaging devices, a processing computer, and a communication device. The camera units are placed at multiple locations in a construction site to cover an area. The camera units are self-positioned by detecting a calibration target that moves within a working volume. The camera units can detect and calculate positions of objects, including measurement sticks, tools, personnel, etc., in the area.

Abstract: A gravity center obtained by combining a gravity center of an X-axis movable object, a gravity center of a Y-axis movable object, and a gravity center of a lens carrier is located in a triangle, as vertexes, having a contact portion in which an X-axis friction engagement portion comes into contact with an X-axis drive shaft, a contact portion in which a first X-axis support portion comes into contact with an X-axis movable object holding portion, and a contact portion in which a second X-axis support portion comes into contact with the X-axis movable object holding portion.

Abstract: In a linear driving apparatus including a vibration wave motor, a driving target body movable in a moving direction, a transmission member which is held by the driving target body and abuts against an abutment part of a moving member to synchronously move the vibration wave motor and the driving target body, and a biasing member which gives a biasing force between the transmission member and the abutment part, the direction of a pressure contact force which a vibrator receives from a friction member and the direction of a biasing contact force which the abutment part receives from the biasing member are parallel and opposite to each other, and the load center of the distribution load of the biasing contact force falls within the range of the vibrator.

Abstract: A light emitting device includes a casing, a lighting module, and a lens module. The lighting module is disposed in the casing for providing light and includes first and second light sources. The lens module faces the lighting module and includes a first lens aligned with the first light source, a second lens aligned with the second light source, a sliding frame, and a driving motor. The sliding frame is fixed to the first lens and has a thread portion. The driving motor has a screw rod for engaging with the thread portion, to make the sliding frame movable along the screw rod. The driving motor rotates the screw rod to make the thread portion drive the first and second lenses close to or away from the first and second light sources. Accordingly, the present invention reduces the manufacturing cost of the light emitting device and simplifies its mechanical design.

Abstract: Provided is a lens barrel having a movable frame that moves in a direction of an optical axis of an imaging optical system and a cylinder member that is movable in the direction of the optical axis and is rotatable about the optical axis. A hole is provided in any one of the movable frame and the cylinder member and a shaft portion of a fitted member fitted into the hole is fitted into a groove provided in the other, and thereby the movable frame and the cylinder member are engaged.

Abstract: An imaging apparatus, comprising a detection element that outputs analog signals in accordance with position of the operation member, an A/D converter that converts the analog signals to digital values, and a controller that detects position of the operation member, wherein the controller, when it is determined that the operation member is stopped, compares an average value of a first number of digital values with a first threshold value, and determines that the operation member is moving if it has been determined that the average value is greater than the first threshold value, and when it is determined that the operation member is moving, compares a difference between a newest digital value and a digital value that was acquired a second number previously with a second threshold value, and determines that the operation member has stopped if it is determined that the difference is smaller than the second threshold value.

Abstract: The invention relates to an optical imaging device, in particular an objective 1 for microlithography in the field of EUVL for producing semiconductor components, having a beam path 2, a plurality of optical elements 3 and a diaphragm device 7 with an adjustable diaphragm opening shape. The diaphragm device has a diaphragm store 7a, 7b with a plurality of different diaphragm openings 6 with fixed shapes in each case, which can be introduced into the beam path 2.