Abstract: The disclosure relates to an optical system, such as a projection exposure apparatus for semiconductor lithography, including a manipulable correction arrangement for reducing image aberrations. In some embodiments, the system includes at least one manipulator configured to reduce image aberrations. The manipulator can include at least one optical element which can be manipulated by at least one actuator. The manipulator can be formed in changeable fashion together with an actuator.

Abstract: A lens barrel comprises barrier blades that open and close in a directional orthogonal to an optical axis; an optical system retention frame that includes a first surface along a direction orthogonal to the axis, the optical system retention frame retaining the optical system and movable with respect to the barrier blades in a direction along the axis; and a coupling plate includes a second surface relatively movable with respect to the first surface, the coupling plate causing the barrier blades to open and close by the coupling plate rotating about the axis; wherein, when the barrier blades are opened, the first surface is can move in the axis direction without abutting against the second surface and, when the barrier blades are closed, the first surface abuts against the second surface and movement of the first surface in the axis direction is restricted.

Abstract: A lens barrel including a telescopic cylinder configured to be accommodated within a fixed frame; a plurality of lens groups configured to be retained in the telescopic cylinder; a lens driving device configured to drive the plurality of lens groups along a longitudinal axis of the telescopic cylinder between a collapsed position in which at least one portion of the plurality of lens groups is stored in the fixed frame and an extended position in which the at least one portion of the plurality of lens groups is extended out of the fixed frame; and a retractable lens group configured to be retracted into the fixed frame through an opening in a wall of the fixed frame when the telescopic cylinder is in the extended position.

Abstract: Provided is a lens driving unit for an optical pickup and an optical disc drive that employs the lens driving unit. The lens driving unit includes a lens frame in which an object lens and a plurality of driving coils are installed, and a plurality of suspension wires connected to the driving coils. The lens frame also includes a plurality of winding posts disposed on opposing sides of the lens frame and extending in a direction in which the suspension wires extend. According to various examples, coil ends of the driving coils are wound around the winding posts to electrically connect the driving coils to the suspension wires.

Abstract: Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (?) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.

Abstract: A piezoelectric actuator having reduced sizes, a lens barrel and an optical device. A piezoelectric actuator is provided with: a first actuator including first piezoelectric elements to be displaced in a first direction; a second actuator, which includes second piezoelectric elements to be displaced in a second direction intersecting with the first direction, and is arranged in a direction intersecting with the first direction with respect to the first actuator; and a relative displacement member, which is arranged between the first actuator and the second actuator and can be relatively displaced in the first direction with respect to the first actuator.

Abstract: Provided is a lens barrel comprising a lens holding member that holds a lens; a guide bar that has a magnetic pattern in which a pair of magnetic poles repeat in a longitudinal direction and that has the longitudinal direction thereof oriented in a direction of an optical axis of the lens to guide the lens holding section to move in the direction of the optical axis; a control portion that is disposed on an outer circumferential surface of the lens holding member and that includes a magnetic body generating magnetic force between itself and the magnetic pattern of the guide bar; and a drive coil that is arranged in a manner to not contact the guide bar and that generates magnetic drive force between itself and the guide bar.

Abstract: The present invention provides a supporting device that supports an optical element, comprising: a first supporting member that is fixed to an outer circumference of the optical element; a plurality of members that is connected to an outer circumference of the first supporting member; and a second supporting member that supports the first supporting member via the plurality of members, wherein each of the plurality of members is configured such that the a rigidity thereof in a first direction inclined relative to a direction orthogonal to an optical axis of the optical element in a plane including the optical axis is lower than a rigidity thereof in each of two directions that are orthogonal to the first direction and that are orthogonal to each other.

Abstract: A lens barrel that can realize increased shooting magnification and slimming down of an image pickup apparatus without increasing drive load and optical accuracy error in driving the lens barrel along an optical axis. A cam follower follows cam grooves in a cam cylinder to move along the optical axis, and engages with a lens holding frame to move the same from a retracted state to a shooting state. A compression coil spring urges the cam follower and the lens holding frame in such a direction as to draw them away from each other, and when the cam follower moves from the shooting state to the retracted state, engages with the lens holding frame to move the same toward an image plane. A fixed portion coming into abutment with the lens holding frame restricts movement of the lens holding frame toward the image plane.

Abstract: Disclosed herein is a lens actuating module for realizing focus adjustment and optical zooming. The lens actuating module includes a rod which is disposed on one side of a lens barrel on which at least one lens is mounted, and has an axis direction corresponding to an optical axis direction of the lens barrel, a driving force transmission member which has a conjoining recess to be conjoined with an outside surface of the rod and has magnetism so as to be conjoined with the outside surface of the rod due to a magnetic force, and a piezoelectric actuator which is disposed on one side of the driving force transmission member in the optical axis direction to provide an axis direction driving force to the rod via the driving force transmission member.

Abstract: A voice coil motor includes a movable barrel and a spring plate. The movable barrel includes a top end and a number of locating members. Each locating member includes a locating post on the top end, and a blocking portion on the locating post. The spring plate includes a top surface, a bottom surface, and an inner frame. The spring plate defines a through hole passing through the top surface and the bottom surface. The inner frame surrounds the through hole. The inner frame defines a number of locating holes. Each locating hole receives a corresponding locating post. The spring plate is positioned between the blocking portions and the top end. The blocking portions lock the inner frame to the movable barrel. The inner surface of each locating hole defines spaced gaps. Each gap passes through the top and the bottom surfaces.

Abstract: In a lens driving device, a rack gear portion is used as a gear portion so that the gear portion can be disengaged from the terminal end of the lead screw in the radial direction. To efficiently utilize a guide shaft formed with high precision, the guide shaft extends through a spring supporting frame of a lens holder that holds a lens, a movable member having the rack gear portion that meshes with the lead screw, whereby the movable member and the lens holder are linearly guided along the guide shaft, and the guide shaft also serves as the rotation axis of the movable member. A compression coil spring is wound around the guide shaft, and the rack gear portion is pressed against the lead screw by using the compression coil spring.

Abstract: A lens module includes a lens barrel, a first lens, a second lens, and a spacer. The lens barrel includes an object-side end and an image-side end opposite to the object-side end. The first lens is received in the lens barrel, and adjacent to the object-side end. The second lens is received in the lens barrel, and adjacent to the image-side end in relative to the first lens. The spacer is an annular plate, and includes an object-side surface, an image-side surface opposite to the object-side surface, and an inner sidewall. The spacer is positioned between the first lens and the second lens. The object-side surface faces the first lens, and the image-side surface faces the second lens. The intersection of the object-side surface and the inner sidewall forms a chamfer.

Abstract: A voice coil motor includes an outer shell, a fastening member, magnetic members, a base, first and second elastic members, and a movable assembly. The outer shell has a through hole defined therein and includes sidewalls surrounding the through hole. The first elastic member includes a ring-shaped first elastic portion. The fastening member fastens the first elastic member on the outer shell. The magnetic members are mounted on the inside of the sidewalls, respectively. The second elastic member is fixed on the base and includes a ring-shaped second elastic portion. The movable assembly includes a retainer wrapped in a coil of wire, the retainer is connected to the first and second elastic portions, and is movable in the outer shell under an interaction between the magnetic members and the coil of wire. A camera module using the voice coil motor is also provided.

Abstract: An optical module includes at least a carrying stage, at least an actuator unit and at least an optical assembly. The carrying stage has a first aperture. The actuator unit is disposed at one side of the carrying stage and has a second aperture. The optical assembly is connected with the actuator unit, and the actuator unit adjusts the position of the optical assembly. A radiated wave enters from one side of the optical module and passes through the first aperture, the second aperture and the optical assembly. A microscope with the optical module has compact size and is easily assembled and carried. The optical module and microscope can efficiently reduce the effect of ambient temperature variations so as to improve the measuring stability thereof.

Abstract: An exemplary piezoelectric actuator includes a fixed barrel defining a first receiving cavity, a movable barrel in the first receiving cavity for receiving a lens module, a piezoelectric driving module driving the movable barrel to move relative to the fixed barrel along an optical axis of the lens module, and a preloading module. The movable barrel defines a second receiving cavity for receiving the lens module. The piezoelectric driving module includes a piezoelectric member attached on the sidewall of the fixed barrel, and a friction member attached on the sidewall of the movable barrel. The piezoelectric member is opposite to the friction member. The preloading module is arranged between the fixed barrel and the movable barrel. The preloading module is opposite to the piezoelectric driving module for exerting a pressure to the movable barrel, thereby making the friction member resist against the piezoelectric member.

Abstract: A projector includes an optical module, a lens and a heat conducting member. The heat conducting member is disposed between the optical module and the lens. The heat conducting member is used for conducting heat from the lens to the optical module.

Abstract: Adjustable mount assembly having two mount parts which are adjustable relative to one another and which themselves form adjustable mounts respectively comprising an outer mount frame and an inner mount frame. The mount assembly permits a highly precise adjustment of two optical components relative to one another in a plane perpendicular to an axis and an adjustment of the two mutually adjusted optical components relative to a reference base.

Abstract: Provided are a lens unit and a vehicle-mounted infrared lens unit capable of correcting a focal shift due to a temperature change without increasing the apparatus size, complicating a production process, and increasing the costs. In a vehicle-mounted infrared lens unit 4 configured such that a plurality of infrared lenses are held by a barrel 30 and a spacer 40 is interposed between two infrared lenses, a first infrared lens 10 is held sandwiched between the spacer 40 and a lens holding portion 31 of the barrel 30. The spacer 40 and the barrel 30 are formed of materials having different thermal expansion coefficients. An O-ring 60 is interposed between a lock portion 32 of the lens holding portion 31 and the first infrared lens 10. Thermal expansion of the spacer 40 allows the first infrared lens 10 to move in the axial direction against the elastic force of the O-ring 60. When the spacer 40 is shrunken, the elastic force of the O-ring 60 allows the first infrared lens 10 to move in the opposite direction.

Abstract: An optical system, in particular a projection objective, for microlithography, has an optical axis and at least one optical correction arrangement, which has a first optical correction element and at least one second optical correction element, wherein the first correction element is provided with a first aspherical surface contour, and wherein the second correction element is provided with a second aspherical surface contour, wherein the first surface contour and the second surface contour add up at least approximately to zero, wherein the correction arrangement has at least one drive for movement of at least one of the two correction elements. In this case, at least one of the two correction elements can rotate about a rotation axis which is at least approximately parallel to the optical axis, and the at least one drive is a rotary drive for rotation of one or both of the correction elements about the rotation axis.

Abstract: A lens module includes a holder, a connecting loop, engaging pins, an adjustment ring, a fixing pin; and a lens unit. The holder includes a barrel having a receiving space. The barrel defines sliding slots. The adjustment ring defines guiding grooves and a stopping slot. The connecting loop is received in the receiving space, the adjustment ring is sleeved over the barrel, and each engaging pin is secured with the connecting loop, an end of each engaging pin passing through a corresponding sliding slot and into a corresponding guiding groove. The fixing pin passes through the stopping slot and fixed with the barrel, the lens unit is secured with the connecting loop, the adjustment ring is rotated relative to the holder, and the engaging pin slides along the guiding groove, to cause the lens unit to axially move without rotating relative to the holder.

Abstract: A holding arrangement for an optical element includes a basic structure surrounding an optical element and a mounting device by which the optical element can be supported on the basic structure with two degrees of freedom for a rotational movement about an optical axis and a translational movement along a first axis which extends perpendicularly to the optical axis and intersects the optical axis in a center. The mounting device includes four joint locations arranged point-symmetrically with respect to the center and at least one parallel rocker which is displaceable parallel to the first axis. A manipulator unit includes a holding arrangement.

Abstract: This image reading apparatus, includes: a first retaining member that retains a lens unit; a second retaining member that retains a sensor unit; and a positioning member that sets a relative position between the first retaining member and the second retaining member, wherein the positioning member comprises: a first concave portion that is sagged from a first contact surface to be in contact with the first retaining member; and a second concave portion that is sagged from a second contact surface to be in contact with the second retaining member, and the positioning member is fixed to the first retaining member and the second retaining member by an adhesive filled in the first concave portion and the second concave portion.

Abstract: A lens driving device which can stably support a lead screw, and furthermore, can reduce driving load while maintaining a centering function for stabilizing a lens stop position. The lens driving device comprises a lens for holding member holding a photographic lens, a lead screw for moving the lens holding member forward and backward in a photographic optical axis direction, and a first support member and a second support member for rotationally supporting the lead screw. The second support member has a support concave portion having an apex for supporting the lead screw, and the lead screw has a support portion that is in point contact with the support concave portion having the apex.

Abstract: A lens-adjusting module includes a base, a lens device, a second tray, and an adjusting device. The lens device includes a first tray and a lens being fixed to and contacting the first tray. The first and the second trays are movably disposed on and contact the base. The first tray is movably disposed on the second tray and located between the second tray and the base. The adjusting device includes a first lever and a second lever pivoted to the base. A part of the first lever and a part of the second lever are slidingly disposed on the first tray. The first lever rotates to drive the first and the second trays to move relatively to the base along a first axis. The second lever rotates to drive the first tray to move relatively to the second tray and the base along a second axis.

Abstract: An adjustable optical mount embodiment includes a first plate configured to mount an optical element and a second plate disposed adjacent the first plate with a pivot point between the plates. At least one adjustable threaded member has a contact end in contact with a rear surface of the first plate and a threaded outer surface in threaded engagement with a threaded bore of the second plate. A lock collar having a threaded bore in threaded engagement with a threaded outer surface of the adjustable threaded member which extends from a rear surface of the second plate has a torqueable surface disposed at an adjustment end which is configured to be engaged for the application of torque from a rearward position relative to the adjustable optical mount.

Abstract: An SMA actuation apparatus comprises a camera lens element supported on a support structure by a plurality of flexures. An SMA wire at an acute angle to the movement axis and a biasing element are connected between the support structure and the movable element. A component of the force applied by the SMA wire perpendicular to the movement axis compresses the flexures causing them to apply a force to the movable element having a component along the movement axis in the same direction as the SMA wire. An end-stop limits the movement of the movable element, and the moment applied by the end-stop to the movable element about the center of stiffness is equal to the moment applied by the SMA wire about the center of stiffness at the point when the movable element loses contact with the end-stop on contraction of the SMA wire.

Abstract: An image pickup apparatus includes a first drive unit, a first lens unit configured to be driven by the first drive unit to perform a magnification-varying operation, a second drive unit, a second lens unit configured to be driven by the second drive unit, and a controller configured to control the first drive unit and the second drive unit so as to drive the second lens unit with reference to a position of the first lens unit in performing the magnification-varying operation. The controller controls the second lens unit so as to move only in a first direction in performing the magnification-varying operation.

Abstract: Disclosed is a piezo-electrically actuated micro-mechanical deformable member comprising a corrugated longitudinal beam (521) formed in a substrate, and having a first anchored end (502) and a second end (509), as well as a plurality of piezoelectric film (PZET) actuating segments (522, 523, 524) formed in or on at least some grooves and ridges of the corrugated beam, the beam (521) being configured to assume one of a number of different geometric configurations depending upon which of a corresponding set of electric actuation signals (105) are applied to the PZET elements, the electric actuation signals establishing corresponding electric fields in the associated PZET segments to thereby deform the member.

Abstract: A lens barrel includes a lens holding member that holds a lens, a positioning guide bar, a rotation blocking guide bar, an optical filter holding member that holds an optical filter, an optical filter supporting member that is disposed at a side of the lens holding member with reference to the optical filter holding member and that supports the optical filter holding member, and an image pickup element holding member that is disposed at a side of an image pickup element with reference to the optical filter holding member and that has a positioning guide bar holding portion that holds the positioning guide bar. The optical filter supporting member includes a rotation blocking guide bar holding portion that holds the rotation blocking guide bar, and the rotation blocking guide bar holding portion is positioned in an insertion and removal range of the optical filter holding member.

Abstract: A vibration actuator having excellent driving performance, a method for manufacturing the vibration actuator, a lens barrel and a camera. The vibration actuator is provided with: an electromechanical conversion element which converts an electric energy into a mechanical energy; an elastic body which generates vibration waves by oscillation of the electromechanical conversion element; a resin layer, which is formed of a conductive thermoplastic resin and bonds the electromechanical conversion element and the elastic body with each other; and a relatively moving member which is brought into contact with the elastic body with a pressure and is relatively moved to the elastic body by vibration waves.

Abstract: An auto focusing lens module is provided, which includes a casing, a photo interrupter and a lens holder. The casing has a containing space. The photo interrupter is fixedly disposed on the casing and has a light-emitting surface and a light-sensing surface opposite to the light-emitting surface. The lens holder is disposed in the containing space and has a first obstacle and a second obstacle. The space between the first obstacle and the second obstacle keeps a calibrating interval. The lens holder is capable of moving to-and-fro along an axial direction to bring the first obstacle, the calibrating interval or the second obstacle to the space between the light-emitting surface and the light-sensing surface. The invention also provides a calibrating method suitable for the above-mentioned auto focusing lens module.

Abstract: A projection module adapted to be disposed in an electronic device is provided. The electronic device includes a main body and the projection module disposed in the main body. The projection module includes a chassis, a light source, a light valve, a first lens group, and a second lens group. The light source and the light valve are disposed on the chassis. The first lens group is fixed on the chassis. The second lens group is slidably assembled on the chassis and is disposed between the light valve and the first lens group. The light source is capable of providing a light beam, and the light beam is capable of emitting through the light valve, the second lens group, and the first lens group in sequence.

Abstract: A lens barrel holding frame whose back surface wall is positioned at a position on the reflection optical element, in a state before moving to the retraction position, opposite to the lens unit in a direction of the first optical axis, wherein a through hole, through which the lens unit can retract along the first optical axis, is formed on the back surface wall of the lens barrel holding frame.

Abstract: A zoom lens barrel includes a fixed frame, a rotary frame, a moving frame that moves in an optical axis direction with the rotary frame, a float key that is restricted from rotating and moves, an inner cam frame that has a cam follower, is rotationally driven by the rotary frame, and moves in the optical axis direction, a guide frame that has a cam follower, and moves in the optical axis direction, an outer cam frame moves in the optical axis direction with the guide frame, and moves relatively with respect to the guide frame, a second group zoom frame that holds a second group lens, has a cam follower, is restricted from rotating around the optical axis, and moves in the optical axis direction, and a first group zoom frame that holds a first group lens, has a cam follower, and moves in the optical axis direction.

Abstract: A lens device is disclosed. The lens device includes a fixed lens barrel, a rotating lens barrel, and a sensor. The rotating lens barrel is sleeved within the fixed lens barrel. The sensor is disposed within the fixed lens barrel for detecting the position of the rotating lens barrel.

Abstract: A zoom lens assembly includes a first barrel including a first lens group; a second barrel including a second lens group that is aligned with respect to an optical axis of the first lens group, the second barrel disposed in front of the first lens group so as to be position-adjustable along the optical axis with respect to the first barrel; and a first ray shielding plate disposed in front of the first barrel and between the first barrel and the second barrel, and whose position is varied to be close to a center of the optical axis or to be distant from the center of the optical axis so as to block a portion of incident light that enters into the first barrel according to relative positions of the first barrel and the second barrel.

Abstract: An interchangeable lens to be detachably attached to a camera body, that includes a holding unit at which a plurality of contacts is arranged, the interchangeable lens includes: a first communication contact system arranged at the holding unit; and a second communication contact system different from the first communication contact system, arranged at the holding unit at a position different from a position at which the first communication contact system is arranged. The fourth contact is arranged at a position closer to the second communication contact system than the first contact, the second contact, and the third contact are, and the seventh contact and the eighth contact are arranged at positions closer to the first communication contact system than the fifth contact and the sixth contact are.

Abstract: According to an aspect of the invention, a lens barrel having an eccentricity adjusting mechanism includes a lens frame, a pressing ring, an engaging part, a tool insertion hole, an engaging face, a non-engaging face. The lens frame holds a lens for an optical system of the lens barrel. The pressing ring is screw-connected to a fixed barrel of the lens barrel. A part of the lens frame is disposed between the pressing ring and the fixed barrel so that the lens frame is supported to be rotatable around the optical axis. The engaging part is formed on an outer circumferential face of the lens frame, protrudes from the outer circumferential face of the lens frame, the engaging part including a plurality of engaging parts formed in the circumferential direction of the outer circumferential face of the lens frame with predetermined intervals.

Abstract: An electromagnetic lens driving device includes a casing, a lens module, a positioning structure, and an electromagnetic driving module. The lens module is provided in a receiving space defined in the casing. The positioning structure, which is connected between the lens module and the casing, is configured to limit the lens module within the receiving space and generate a frictional force. The electromagnetic driving module is provided in the receiving space and corresponds in position to the lens module. When supplied with electricity, the electromagnetic driving module generates a magnetic force that drives the lens module to move along a central axis. Once the electricity is cut off, the lens module is fixed in position and prevented from moving freely by the frictional force of the positioning structure; hence, the electromagnetic lens driving features economical use of electricity.

Abstract: An optical module includes a substrate, an optical element directly built in a predetermined area of the substrate, and a piezoelectric element directly formed on the substrate along the circumference of the optical element. The piezoelectric element drives the optical element, by displacing the predetermined area of the substrate, in such a manner to displace the optical element in the direction of the optical axis of the optical element or to incline the optical axis of the optical element.

Abstract: The present invention provides an exhausting structure for lens. The exhausting structure is used for being disposed and fixed between a lens and an optical apparatus. The exhausting structure is formed with an air channel. The air channel has a first opening and a second opening. A projecting outline of the first opening in a projecting direction is separated from a projecting outline of the second opening in the projecting direction. Thereby, the air channel allows air to flow therethrough. Further, an air pressure caused by the change of the temperature in the exhausting structure can be released so as to prevent the air from pressing the lens or apparatus. The exhausting structure can also prevent a light from entering into the base through the air channel.

Abstract: An exemplary lens module includes a lens barrel, and a first adjustable lens received in the lens barrel. The lens barrel includes a circumferential sidewall. The lens barrel also defines an accommodating cavity therein for receiving the first adjustable lens therein. The circumferential sidewall of the lens barrel defines an adjusting through hole therein. The adjusting through hole communicates with the accommodating cavity. The first adjustable lens has a circumferential side surface. The circumferential side surface defines a first adjusting notch therein. The first adjusting notch communicates with the adjusting through hole.

Abstract: Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (?) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.

Abstract: A linear motion device includes a guide shaft. A to-be-moved member is supported on the guide shaft, and is linearly movable along the guide shaft. A lead screw extends parallel to the guide shaft. A clamper meshes with the lead screw. The clamper moves as the lead screw rotates. An intermediate member is provided between the to-be-moved member and the clamper. An urging member operates for urging the to-be-moved member toward the clamper and enabling the intermediate member to be seated between the to-be-moved member and the clamper in a manner such that an axis of the intermediate member is nonparallel to the guide shaft.

Abstract: The lens barrel includes a first frame, a second frame configured to be rotatably supported by the first frame, a drive actuator that is disposed on the inside of the second frame, and a transmission mechanism disposed on the inside of the second frame and configured to transmit the drive force of the drive actuator to the second frame. The imaging device includes the above-mentioned lens barrel and an imaging element that converts an optical image formed by this lens barrel into image data.

Abstract: A lens apparatus is capable of adjusting only the inclination of an optical axis in a desired direction. A focus lens frame is movably supported by a first guide shaft and a second guide shaft. The first guide shaft is provided in a lens barrel with both end parts of the first guide shaft being fixed. A front end part of the second guide shaft is swingably supported, a rear end part thereof is fitted into a horizontal elongate hole, and the second guide shaft is movably supported only in a horizontal direction. The second guide shaft is inserted through a first elongate hole formed in a swinging frame, and when the swinging frame is swung, the second guide shaft is horizontally swung. Then, when the second guide shaft is horizontally swung, the focus lens frame is horizontally swung, whereby the horizontal inclination of the optical axis is adjusted.

Abstract: A method of locking of and a directionally adjustable mount including a first plate arranged to stabilize an anisotropic device, a second plate arranged to engage the first plate and provide a support, a second supporting member arranged to engage the second plate and to rollably support the first plate so as to define a local spacing between the plates, and a first supporting member arranged to have a first axis of symmetry and to contact the first plate and engage the second supporting member. In a locked position, the supporting members are arranged coaxially regarding the axis of symmetry, such that a sum of a positioning force applied by the first supporting member and a locking force applied by the second supporting member upon the first plate substantially vanishes, so that a resulting local moment of force oriented to deform the at least one first plate also substantially vanishes.

Abstract: An apparatus for adjusting a location of an optical element includes: a first barrel having a hollow cylindrical shape; a second barrel having a hollow cylindrical shape to support the optical element and rotatably coupled to the first barrel; a distance maintaining unit installed between the first barrel and the second barrel in a first region of the first barrel and maintaining a distance between the first barrel and the second barrel in the first region when the second barrel rotates relative to the first barrel; and a guiding unit installed between the first barrel and the second barrel in a second region of the first barrel and guiding a movement of the second barrel to change a relative position of the second barrel with respect to the first barrel in the second region when the second barrel rotates relative to the first barrel.

Abstract: Inclination of an image display unit is prevented at the time of using a wearable display unit in which the image display unit can move between a projection position where the image display unit comes in front of a user's eye and a retracted position where the image display unit has been retracted from the front of the user's eye. A display support member 27 is prevented from rotating in relation to a display support member housing part 31 in a direction included in a plane perpendicular to the longitudinal direction of the display support member 27, even in a state that the display support member can move. To that end, grooves 28a, 28b extending in the longitudinal direction are formed in the display support member 27, while guide rollers 34a, 34a in contact with these grooves are provided within the display support member housing part 31.