Abstract: A lens module includes a lens barrel, a lens holder, and an extension member. The lens barrel is received in the lens holder. The lens holder includes at least one first guiding portion. The extension member defines a receiving through hole and includes at least one second guiding portion corresponding to the at least one first guiding portion. The lens holder is fixedly received in the receiving through hole by engagement between the at least one first guiding portion and the at least one second guiding portion.

Abstract: An optical element mount has an inner member suspended within an outer member by a plurality of flexures. A first and a second translational adjustment apparatus are disposed to translate the inner member within a translation plane that is orthogonal to an optical axis, wherein each translational adjustment apparatus has an actuator movable within the outer member along a linear travel path that is parallel to the translation plane and a shaft extending between the outer and inner members, the shaft coupled to the actuator with a first ball-and-socket joint and coupled to the inner member with a second ball-and-socket joint. The linear travel path of the actuator for the first translational adjustment apparatus is substantially orthogonal to the linear travel path of the actuator for the second translational adjustment apparatus.

Abstract: A lens barrel includes a plurality of lens groups each having at least one lens; a plurality of lens retaining frames which retain a corresponding one of the plurality of lens groups; a telescopic cylinder containing therein the plurality of lens groups and the plurality of lens retaining frames; a lens retaining frame driving device configured to drive at least one of the lens retaining frames; a moving member which moves in a direction along the photographing optical axis; and a position detector configured to detect a change in a position of the moving member, wherein the plurality of lens retaining frames including a retractable lens retaining frame configured to retract the at least another one of the plurality of lens groups from the photographing optical axis to a retracted position out of the telescopic cylinder in the collapsed state.

Abstract: A projection type image display apparatus includes a lens group, being disposed adjacent to an image display element, which is configured to include a plural number of lenses, and a mirror, which is configured to reflect emission lights from the lens group, so as to project upon the screen obliquely. A ratio (Lo/Lp) between a distance (Lp) from a center of the mirror up to the screen and a diagonal size (Lo) of the screen is at least 2.

Abstract: The present invention relates to an optical mount, in particular a lens mount, which is divided by a plurality of cuts in the mount material into a stationary outer mounting ring, a laterally adjustable inner mounting ring and three bent lever manipulator units which are offset by 120° relative to one another and which comprise a bent lever having a first element, one end of which is connected by way of a bent lever flexure hinge to one end of a second element, the other end of the first element being connected to the inner mounting ring, the other end of the second element being connected to the outer mounting ring, and with the first and second elements enclosing a bent angle smaller than 180°. By manipulating the three bent lever manipulator units, any center position of the inner mounting ring can be adjusted relative to the center of the outer mounting ring within an intended displacement range.

Abstract: An optical package is provided comprising a lens system, the lens system comprising an adjustable lens component, a plurality of magnetic elements, and a multi-directional lens flexure. The adjustable lens component is mechanically coupled to a lens mounting portion of the multi-directional lens flexure. The magnetic elements comprise at least one fixed magnetic element and at least one motive magnetic element. The arrangement of the fixed and motive magnetic elements relative to each other forms a first fixed/motive element pair and a second fixed/motive element pair. The motive magnetic element of each fixed/motive element pair is mechanically coupled to a motive portion of the multi-directional lens flexure.

Abstract: In the subject three-axis pointing system, the elevation and tip mirror axes are permanently mounted with their rotation axes orthogonal to each other to eliminate gimbal lock over the hemisphere, to avoid high accelerations as the zenith or nadir pointing directions are approached, and to provide optimal two-axis beam pointing control.

Abstract: An image pickup apparatus enabling construction of a small bending optical system with high magnification. A first lens group is movably disposed toward an object on a first optical axis. A second lens group is movably disposed radially inward of the first lens group. The second lens group comprises a drive frame drivingly controlled along the first optical axis and a lens holding frame for holding the second lens group. A prism is disposed on the first optical axis, for bending light incident on the prism to thereby guide the light along a second optical axis. The prism is retracted along the second optical axis in a non-shooting state. In the non-shooting state, the second lens group is retracted and accommodated in a space defined by the drive frame and the lens holding frame and a space occupied by the prism in a shooting state.

Abstract: A device (100) for imaging an object (101), wherein the device (100) comprises an objective lens (102) adapted to manipulate a beam of electromagnetic radiation (103) transmitted through the object (101), a collimator lens (104) adapted to manipulate the beam of electromagnetic radiation (103) transmitted through the objective lens (102), and an actuator (105) adapted for displacing the objective lens (102) in a direction essentially parallel and in a direction essentially perpendicular to a propagation direction of the beam of electromagnetic radiation (103) between the objective lens (102) and the collimator lens (104), wherein the objective lens (102) and the collimator lens (104) are arranged so that the beam of electromagnetic radiation (103) between the objective lens (102) and the collimator lens (104) is essentially parallel.

Abstract: Disclosed is a technique that prevents the inclination of a lens barrel in a downward direction and does not hinder a reduction in size. A pair of sliding portions that slides along slide shafts is provided on both sides of a plate-shaped flange in which an opening for attaching a lens barrel is provided. The sliding portions are formed at different heights. Circular through holes through which the columnar slide shafts pass are formed in the sliding portions to extend in the height direction. When the sliding portions slide along the slide shafts, the flange is shifted in the height direction. The lens barrel attached to the flange is shifted in the height direction together with the flange.

Abstract: A lens barrel includes a support ring movable in an optical axis direction; a displaceable optical element supported by the support ring movable between a photographing position and a radially-displaced position in which the displaceable optical element is eccentrically displaced from the optical axis; and an advancing/retracting optical element supported by the support ring. When the lens barrel is in a ready-to-photograph state, the displaceable optical element is held at the photographing position, and the displaceable optical element and the advancing/retracting optical element are aligned in the optical axis direction. When the lens barrel moves from the ready-to-photograph state to an accommodated state, the displaceable optical element is held at the radially-displaced position, and the displaceable optical element and the advancing/retracting optical element are relatively moved so as to at least partially coincide with each other in a direction orthogonal to the optical axis.

Abstract: A camera module includes a rear lens barrel, a front lens barrel assembled to the rear lens barrel, the front lens barrel and the rear lens barrel together forming a housing space, a lens holder that holds an imaging optical system and is housed in the housing space, a guiding mechanism that movably supports the lens holder along the optical axis of the imaging optical system, and a driving unit that moves the lens holder along the optical axis of the imaging optical system, the driving unit including a magnet provided in the lens holder and a coil that faces the magnet. The rear lens barrel has a bottom wall that faces the housing space. The coil includes first and second coils disposed in the rear lens barrel on opposite sides of the optical axis in the housing space.

Abstract: An optical-element driving mechanism is configured to drive an optical element, and includes a uniaxial driving mechanism that includes a linear actuator that drives in a first direction, and a link mechanism that converts a displacement in a direction orthogonal to the first direction. The linear actuator is level with the link mechanism in an optical-axis direction. The uniaxial driving mechanism is arranged in order of the link mechanism and the linear actuator in a radial direction when viewed form an optical axis of the optical element.

Abstract: A projection optical unit for a projection display apparatus, which displays an image upon a projection surface, obliquely, includes a front lens group disposed in a direction from an image display element to a projection surface, a rear lens group, and a reflection mirror formed so that a curvature of a portion for reflecting a light beam incident upon a lower end portion of the projection surface is larger than a curvature of a portion for reflecting a light beam incident upon an upper end of the projection surface. An optical axis of the front lens group and the rear lens group is more inclined with respect to a direction of the portion of the reflection mirror for reflecting the light beam incident upon the lower end portion of the projection surface than a normal line direction of the image display element.

Abstract: A projection type image display apparatus includes an image display element, a first lens group disposed in a light direction with respect to the image display element and configured to include a plurality of lenses, a second lens group disposed in a light direction with respect to the first lens group and configured to include a plurality of lenses, a reflection mirror, configured to reflect lights emitted from the first and/or second lens groups so as to project upon the screen obliquely, a first mounting base on which the first lens group is mounted, a second mounting base on which the second lens group is mounted, and a chassis configured to store the first and second lens groups, the reflection mirror, and the first and second mounting bases. The first mounting base is fixed at a bottom of the chassis, while the second mounting base is moveable.

Abstract: A variable focus lens system that can be used in eyeglasses is disclosed. The system consists of superimposed first and second transparent thin lenses with surfaces divided into Fresnel zones and zone boundaries. The lenses are relatively slidable for focus adjustment. The Fresnel zone boundary surfaces are made parallel to the user's optical line of sight to reduce visual obstructions, and the zone boundaries may be restricted to areas near the lens periphery to further reduce visual obstructions. An opaque light absorbing coating may be applied to the zone boundaries to reduce light scattering. A fixed prescription lens, having the user's distance and astigmatism corrections, may be superimposed on the other two lenses.

Abstract: A protective shell for an electronic device is adapted to accommodate the electronic device. The electronic device includes a camera lens. The protective shell includes a shell body and a lens device. The shell body is adapted to accommodate the electronic device. The lens device is mounted on the shell body, and includes a plurality of lenses. The lens device is operable to move relative to the shell body such that a selected one of the lenses correspondingly overlaps one side of the camera lens of the electronic device to permit switching among different modes of use, thereby enabling the camera lens to have different functions, such as close-up, filtering, wide-angle, and polarizing functions.

Abstract: The projection lens that projects a light flux from an object onto a projection surface. The projection lens includes a negative lens unit having a negative optical power, and a correction mechanism that tilts the negative lens unit with respect to an optical axis of the projection lens such that field tilt is generated in a direction opposite to a direction of field curvature generated at the projection surface. The projection lens reduces the generation of field curvature and its variation using a simple configuration.

Abstract: An actuator capable of attaining two-dimensional positioning with a simple configuration includes an electromechanical transducer 11 which makes mechanical displacement in accordance with a voltage applied thereto, a driving shaft 12 which is axially displaced and inclined by the mechanical displacement of the electromechanical transducer 11, a movable member 13 which frictionally engages on the driving shaft 12, and a driving circuit for superposing a direct-current driving voltage leading to an inclination of the driving shaft 12 at a desired angle at a low rate of change preventing slide displacement of the movable member 13 relative to the driving shaft 12 and an alternating driving voltage for causing axial vibrations of the driving shaft 12 so as to cause slide displacement of the movable member 13 relative to the driving shaft 12 and applying the superposed voltages to the electromechanical transducer 11.

Abstract: A replacement apparatus for an optical element mounted between two adjacent optical elements in a lithography objective has a holder for the optical element to be replaced, which holder can be moved into the lithography objective through a lateral opening in a housing of the same.

Abstract: A projector includes a light source device, a light modulation device, and an exterior casing. The projector is arranged so as to be installed in a desktop mount position and a ceiling suspension position. The light source device includes an elliptic reflector having a nearly ellipsoidal reflection surface and converging and outputting a luminous flux radiated from a light source lamp in a certain direction, and a parallelizing lens that parallelizes the converged light of the elliptic reflector, and a lens supporting part that supports the parallelizing lens and makes a position of the parallelizing lens relative to the light source device main body changeable according to the position of the projector is provided.

Abstract: An optical element is moved in six-degrees-of-freedom. Three first displacement sensors are disposed on a base plate and measure respective displacement amounts of three mutually different points on the optical element in a first direction. A second displacement sensor measures a displacement amount of one point on the optical element in a second direction. Two third displacement sensors measure respective displacement amounts of two mutually different points on the optical element in a third direction. A transformation processor transforms the six measured displacement amounts. A calibration processor calibrates the transformed displacement amounts with a calibration matrix of which coefficients are previously obtained to calibrate the displacement amounts in the six-degrees-of-freedom, which have errors due to measurement errors of the displacement sensors. A controller outputs command values based on differences between the calibrated displacement amounts and target displacement amounts.

Abstract: A variable power optical system composed of a first optical part, a second optical part, and a third optical part, with the first optical part being movable with respect to the second and third optical parts to change the focal length of the entire system. The first optical part is movably held between the second optical part and the third optical part. The first optical part moves in the direction perpendicular to the optical axis over a distance between the position on the optical system of the entire system and the position of retraction from the optical axis of the entire system.

Abstract: A projection device, having an optical engine device and an adjusting device is provided. The optical engine device has an optical engine and a fixing device coupled to the optical engine. A first thread hole is formed in the optical engine along a Z-axis direction. An image is projected parallel to the Z-axis. The adjusting device further has an adjusting frame in which a second thread hole is formed along the Z-axis direction and an adjusting bolt screws through the second thread hole and the first thread hole. The operation of the adjusting bolt, the fixing device as well as the optical engine is moved relatively to the adjusting frame along the Z-axis. Thereby, the optical engine has a built-in adjustment mechanism to ensure the focal length maintained as the design value after assembly, such that the image quality of the projection device is enhanced.

Abstract: A field changer device (4) comprising: a rotary magazine (5) of spherical general shape mounted so as to rotate about a rotation axis (R) coincident with an axis of symmetry of the magazine (5), which is inclined to a fixed principal optical axis (X); and at least three optical channels (A, B, C) provided in said magazine (5) and having concurrent respective optical axes (XA, XB, XC) inclined at the same angle (?) to the rotation axis (R), it being possible for said magazine (5) to rotate about its rotation axis (R) through predetermined rotation angles (?1, ?2, ?3) in order to place each of the optical channels (A, B, C) alternately along the principal optical axis (X), the optical channels (A, B, C) being arranged in the magazine (5) in such a way that at least two of the rotation angles (?1, ?2, ?3) of the magazine (5) are different.

Abstract: A support for a vibrating component of an optical assembly that is adjacent to a frame includes an elastomeric rod having one end that is attachable to the component. A rigid sleeve is fastened to the frame and movable relative to the frame. The sleeve has a bore that opens to an inner end of the sleeve and is sized to receive the free end of the rod therein.

Abstract: An optical element module includes an optical element, and a plurality of actuator elements. In the module, the plurality of actuator elements are arranged such that a direction of width of the oblong strip shape of the plurality of actuator elements is a direction of the optical axis and such that a direction of thickness of the plurality of actuator elements is perpendicular to the optical axis , another end part in a direction of length of the plurality of actuator elements is fixed such that one end part in the direction of length of the plurality of actuator elements is displaced by the bending to move the optical element, and at least one actuator element A of the plurality of actuator elements is disposed such that a direction in which the one end part of the actuator element A is displaced by the bending (X-direction) is orthogonal to a direction in which the one end part of another actuator element B is displaced by the bending (Y-direction).

Abstract: A lens unit includes: a first lens group arranged in a first optical axis direction of the lens unit, on which a light flux from an object is incident; a second lens group provided closer to an image side than the first lens group and arranged in a second optical axis direction; a bending section provided between the first and the second lens groups, which bends the first optical axis in the second optical axis direction, wherein the first and second lens groups are movable in the respective optical axes when a zooming operation is carried out; an actuator which drives the first and second lens groups; a first drive mechanism which moves the first lens group; a second drive mechanism which moves the second lens group; and a coupling member which concurrently transmits drive force from the actuator to the first and second drive mechanisms.

Abstract: A lens barrel includes a linear guide member, a linearly advancing/retracting member guided by the linear guide member along an optical axis of an imaging optical system to be movable between operating and retracted positions, and a displaceable element supported by the linearly advancing/retracting member to be movable between an on-axis position in which the displaceable element is positioned on the optical axis and an off-axis displaced position in which the displaceable element is displaced from the optical axis. The linear guide member includes a linear guide projection which extends in a direction parallel to the optical axis to be engaged with the linearly advancing/retracting member. The linear guide projection includes an accommodation through-cutout formed through the linear guide projection in a radial direction, at least part of the displaceable element entering the accommodation through-cutout when the linearly advancing/retracting member is in the retracted position.

Abstract: A projection optical unit for obliquely projecting an image displayed on an image display element upon a projection surface, enlargedly, comprises: a lens group, being disposed neighboring to the image display element, and including a plural number of projection lenses therein; and a reflection mirror for reflecting lights emitting from the lens group, to be projected onto the projection surface, obliquely, wherein assuming that a light beam, emitting from a center of the display screen of the image display element, passing through a center of an entrance pupil of the lens group, and entering into a screen center on the projection surface, is a screen center light beam, then the screen center light beam is incident upon the projection surface, obliquely, with respect to a normal line thereon, the lens group comprises a front lens group including a plural number of refraction lenses, being disposed thereafter directing from the image display element to the projection surface and having rotationally symmetric s

Abstract: A lens actuator for driving a lens received in a lens barrel includes a plate shaped body comprising a through hole defined in the center thereof, an inner portion surrounding the through hole, an outer portion for mounting the lens barrel thereon, and a plurality of resilient portions connected between the inner portion and the outer portion. A plurality of piezoelectric structures formed on the respective resilient portions. The piezoelectric structures are configured for mounting the lens thereon and driving the lens to move relative to the lens barrel.

Abstract: An imaging device includes a rectangular image sensor, and an imaging optical system which includes an on-axis lens element and a radially-retractable lens element. The radially-retractable lens element is supported by a free end of a swingable arm pivoted about an axis eccentric from the imaging optical axis. The on-axis lens element is non-circular, defined by a removed portion from a reference circle thereof along a long side of the image sensor. When in the off-axis displaced position, the radially-retractable lens element utilizes the removed portion of the on-axis lens element and the radially-retractable lens element is offset from a plane through the imaging optical axis and parallel to the short sides of the rectangular imaging surface. The swing axis is on the on-axis lens element side, in the long side direction, closer to the optical axis of the radially-retractable lens element in the off-axis displaced position.

Abstract: A lens module includes a lens barrel, a first lens, a plurality of first electro-active polymer (EAP) units and a plurality of second EAP units. The first lens is suspended in the lens barrel by the plurality of first EAP units and second EAP units. The lens barrel receives a second lens, a spacer and a third lens. The second lens and the third lens are spaced apart by the spacer.

Abstract: Improved optical alignment precision to a passive optical cavity is provided by including a combination of a weak focusing element and a translation plate in the input coupling optics. Adjustment of positions and angles of these optical elements, preferably after all other input optical elements are fixed in place, advantageously provides for high-precision optical alignment to the cavity, without requiring excessively tight fabrication tolerances. Fabrication tolerances are relaxed by making the optical power of the weak focusing element significantly less than the optical power of a strong focusing element in the input optics. The position and angles of the beam with respect to the cavity can be adjusted, as can the size of the beam at the cavity. Differential adjustment of the beam size in two orthogonal directions (e.g., tangential plane and sagittal plane) at the cavity can also be provided.

Abstract: The present invention provides a lens unit including: a first lens group; a second lens group; an optical-path bending member; a movable frame holding the first lens group; a stationary frame holding the movable frame movably in an direction of the first optical axis, and adopted to telescopically house the movable frame therein; and a bending-member moving mechanism for moving the optical-path bending member. When an image is taken, the movable frame protrudes from the stationary frame and the optical-path bending member is arranged at a position so as to bend the first optical axis in the direction of the second optical axis. When the lens unit retracts, the bending-member moving mechanism moves the optical-path bending member to retreat the optical-path bending member from an area where the first lens group to be housed in the stationary frame.

Abstract: A dual field of view sighting system uses liquid crystals, flip-polarizers and/or flip-mirrors to select between at least two fields of view.

Abstract: A replacement apparatus for an optical element mounted between two adjacent optical elements in a lithography objective has a holder for the optical element to be replaced, which holder can be moved into the lithography objective through a lateral opening in a housing of the same.

Abstract: A projection-type image display apparatus for projecting an image, enlargedly, onto a projection surface, comprises: an image display element; a lens group, being disposed behind the image display element, comprising therein, a front lens group made up with a plural number of lenses, including, at least, a refractive lens, having a positive power and being rotationally symmetric in a surface configuration thereof, and a rear lens group made up with a plural number of lenses, including, at least, a lens having a free curved surface configuration and being rotationally asymmetric, thereby emitting the image displayed on the image display element; a reflection mirror for reflecting the light from the lens group, thereby projection onto the projection surface, obliquely; a first mounting base, on which the rear lens group is mounted; and a rod member, which is provided on the mounting base for moving the mounting base.

Abstract: In some embodiments, the disclosure relates to an optical assembly that includes an optical element and a structure element. A gap runs between the optical element and the structure element. A sealing element may be present to seal the gap. At least one liquid layer may be arranged between the structure element and/or the optical element, and the sealing element so that a relative displacement of the sealing element with respect to the structure element and/or the optical element is possible in the direction of the layer plane.

Abstract: A projection-type image display apparatus for projecting an image, enlargedly, onto a projection surface, comprises: an image display element; a lens group, being disposed behind the image display element, comprising therein, a front lens group made up with a plural number of lenses, including, at least, a refractive lens, having a positive power and being rotationally symmetric in a surface configuration thereof, and a rear lens group made up with a plural number of lenses, including, at least, a lens having a free curved surface configuration and being rotationally asymmetric, thereby emitting the image displayed on the image display element; a reflection mirror for reflecting the light from the lens group, thereby projection onto the projection surface, obliquely; and a movement member for moving the plural number of lenses of the rear lens group.

Abstract: There is provided a lens barrel including an imaging optical system, and an image blur correction unit moving a shift lens forming the imaging optical system in a plane perpendicular to an optical axis of the imaging optical system. The image blur correction unit includes a second movable body holding the shift lens and provided to be movable in two directions perpendicular to each other on a plane perpendicular to the optical axis. A fixed lens holding frame holding a fixed lens forming the imaging optical system is placed in front of the second movable body. A movement control structure is provided in a region ranging from the second movable body to the fixed lens holding frame to allow movement of the second movable body in the two directions and control a range of movement of the second movable body.

Abstract: A frame member of an optical element holding device integrally includes an inner ring, an outer ring, six arms, and a lever connected to each arm. Each arm is rotatably connected to the inner ring and the lever. The lever is rotatable with respect to the outer ring. The orientation of the inner ring and the orientation of the optical element are adjusted in according with the displacement of the lever caused by a displacement module.

Abstract: A support structure comprises image formers, weapons and sighting systems. An image former system is completely practicable by individuals of short stature or limited mobility, especially those in wheelchairs. Ordinary telescope optics and extremely rigid and simplified mechanical structural system allow the imagers incident optical axis to move through three-dimensional space while the eyepiece image moves in one plane. Elevational rotation of the imager about the eyepiece allows the observer to view 360 degrees in elevation without eye movement. A main tube tangential to the objective and parallel to the incident optical axis concentrically receives optical supports which retain the optics. The optical elements may be installed, removed, replaced and cleaned without realignment of the optics. The optical support design receives reflective or refractive optics of varying focal lengths; the objective support accommodates cameras without focal adapters.

Abstract: The invention relates to an apparatus, comprising a lens and a piezoelectric element. The piezoelectric element is configured to bend in response to a voltage applied thereto. The lens and the piezoelectric element are arranged so that the bending causes at least a portion of the lens to move in at least one movement direction. The invention further relates to an according method and computer-readable medium.

Abstract: A lens actuator is provided for moving a movable part including a lens, with respect to a fixed part in the optical axis direction of the lens. The lens actuator includes (a) a magnet disposed on the surface of the movable part facing the fixed part and magnetized in the optical axis direction, (b) a coil disposed on the surface of the fixed part facing the magnet, and (c) a pair of magnetic materials disposed on both sides of the magnet in the optical axis direction, to direct magnetic flux from the magnet toward the coil.

Abstract: A portable camera having a lens assembly switching mechanism is provided. The portable camera includes a camera main body, a camera module, a slab module and a coupling structure. The camera main body has a camera opening formed in a first surface thereof. The camera module is disposed within the camera main body and includes a lens assembly exposed through the camera opening. The slab module is used for carrying one or more selective lens assemblies with different shooting angles. The coupling structure is disposed between the first surface of camera main body and the camera module. The slab module is movable with respect to the coupling structure while the slab module is parallel with the first surface of the camera main body, so that one of the selective lens assemblies is aligned with the camera opening for providing an adjustable shooting angle.

Abstract: An optical axis tilting device of a laser optical system, includes a lens barrel inside of which provided with a laser optical system; a tilt frame supported at the lens barrel; a tilt sensor which is provided at the tilt frame and is configured to detect a preset reference position of the tilt frame; a fixed frame fixed to the lens barrel and provided with a tilting mechanism which tilts the tilt frame relative to a horizontal plane; a leveling mechanism which supports the lens barrel tiltably, and tilts the lens barrel so as to detect the reference position by the tilt sensor and then levels the tilt frame; a feed screw which is rotatably driven by a driving motor; a feed piece which is reciprocated by the feed screw and engages with the tilt frame and tilts the tilt frame relative to the reference position; a piece position detection device configured to detect a position of the feed piece; and a computing device configured to calculate a tilting angle based on the position of the feed piece detected by th

Abstract: A lens driving device includes a lens, a moving member that supports the lens, a stationary member that movably supports the moving member, a pitch drive mechanism that drives the moving member in the pitch correction direction, and a yaw drive mechanism that drives in the yaw correction direction. The pitch drive mechanism has first and second magnets provided to the stationary member, and first and second coils provided to the moving member. The yaw drive mechanism has a third magnet provided to the stationary member, and a third coil provided to the moving member. The first and second coils are arranged on opposite sides of the lens when viewed in a third direction that is perpendicular to the pitch and yaw correction directions, and the third coil is arranged on the same side as the first coil with respect to the lens when viewed in the third direction.

Abstract: A rifle scope system allows adjustment of the scope while a shooter maintains the shooting posture and the scope sight picture. The scope system comprises an adjustment system comprising an electromechanical mechanism that responds to a signal from a remote controller manipulated by the shooter without having to significantly disturb the shooting posture. The adjustment system allows the shooter to adjust the scope's point of aim to coincide with a bullet's point of impact at a target. Such adjustment can be performed either by the shooter. Alternatively, such adjustment could be performed by a processor configured to adjust the point of aim based on a ballistic parameter associated with the bullet or the shooting environment. The adjustment system allows such processor-determined adjustments to be effected in a quick manner.

Abstract: A lens mounting plate to which a projection lens unit is fixed is brought into contact with a sliding base. The lens mounting plate is pressed against the sliding base by the urging of a coiled spring. The pressing force is set such that the position of the projection lens unit can be held and shifted. A cover is provided with a pipe-shaped projection so as to surround the projection lens unit with a clearance corresponding to the shifting width of the projection lens unit between the pipe-shaped projection and the projection lens unit. A user shifts the position of the projection lens unit with his or her fingers laid on the pipe-shaped projection and the projection lens unit.