Abstract: Embodiments of present invention provide a method of splicing optical fibers. The method includes holding a first and a second fiber respectively by a first and a second rotary clamp; aligning axes of the first and second fibers to a common reference; moving the first and second fibers that are being held by the first and second rotary clamps onto a splicing machine; and causing the first and second fibers being spliced together by the splicing machine. A fiber splicing apparatus or system is also provided for performing the method thereof.

Abstract: Embodiments of an optical assembly and methods of making it are provided. The optical assembly includes a first waveguide, a second waveguide, and an optical adhesive for transmitting optical signals between the first waveguide and the second waveguide. The adhesive includes about 20% to about 60% by volume of first monomers. The first monomers have at least two acrylate or methacrylate groups. The optical adhesive also includes about 40% to about 80% by volume of second monomers. The second monomers have at least one fluorine atom and at least one acrylate or methacrylate group. The optical adhesive has a refractive index of from about 1.40 to about 1.55, and in the temperature range of about 10° C. to about 85° C., the refractive index of the optical adhesive has a thermal drift dn/dT of less than the absolute magnitude of |4×10?4/° C.| and the sign of that value is negative.

Abstract: Improved passive optical coupling to photonic integrated circuit (PIC) chips is provided. An interposer unit (108) having one or more flexible optical waveguide members (112, 114, 116) is employed. The flexible optical waveguide members are coupled to the PIC chip (118) via their tips. The PIC chip includes alignment features to facilitate lateral, vertical and longitudinal passive alignment of the flexible optical waveguide members to on-chip optical waveguides of the PIC.

Abstract: An assembly for splicing first and second optical fibers is contemplated. The assembly typically comprises a splicing member disposed within a barrel member. A first optical fiber can be inserted through a first end of the barrel member, and a second optical fiber can be inserted through a second end of the barrel member to splice ends of the first and second optical fibers in the splicing member. A recess at the second end of the barrel can be used to lock the second optical cable, and a clamping member can be used to hold the second optical fiber. An optical fiber stub holder can couple the first end of the barrel member and an optical fiber stub from which the first optical fiber extends. Thus, the first and second optical fibers can be effectively secured in a splicing relationship using the assembly.

Abstract: A telecommunication enclosure is described herein wherein the telecommunications enclosure is configured for making an external optical connection. The enclosure includes a base having at least one port having an integral exterior section disposed around the port outside of the enclosure and an optical coupling disposed at least partially within the port. The optical coupling has a first connector housing disposed within the exterior section of the port and a second connector housing disposed within the interior of the telecommunication enclosure. In an exemplary aspect, the optical coupling is secured directly within the port of the telecommunication enclosure.

Abstract: Active optical cable (AOC) includes at least one optical fiber constituting a signal transmission medium and a plurality of optical data transceivers disposed at separate connector ends of the AOC assembly. The AOC includes a common laser source in a common laser hub (CLH) providing a source optical signal to the optical data transceivers. The optical data transceivers modulate the source optical signal to form modulated optical data signals. In some scenarios described herein, the CLH is disposed at an intermediate location along a length of the AOC between the separate connector ends of the AOC. Further, a central processor can be provided in the CLH to facilitate consolidated data processing operations for the plurality of optical data transceivers.

Abstract: An optical connector according to the present disclosure includes: optical transmission paths that have end faces aligned in a predetermined region, and transmit optical signals. The optical transmission paths correspond to transmission channels or reception channels. The optical transmission paths of the transmission channels are distributed and arranged on a periphery of the predetermined region as compared with a case where the optical transmission paths of the transmission channels are concentrated and arranged at a center of the predetermined region. This configuration can increase an output of an optical signal, and make it possible to improve transmission quality at a low cost while improving a safety standard.

Abstract: An LED light projector comprising a housing, a motor seated in the housing, and a projection carousel mounted distally on the motor and configured to rotate therewith in the housing. The projection carousel comprises a disk with a plurality of windows each having a plano-convex lens mounted therein. In addition, an LED circuit board is mounted on the motor, the LED circuit board including a number of LEDs for emitting a plurality of light beams. A focal assembly is mounted on the motor overtop the LED circuit board and it too includes windows each having a plano-concave lens for collimating the light beams. A partition is mounted in the housing adjacent (outside) the focal assembly and projection carousel, and it includes windows each having a removable image slide for passing the light beams and projecting an image thereon. The projected images result in a unique kaleidoscopic pattern.

Abstract: A focus adjustment apparatus includes an imaging unit, a focus detection unit configured to detect a focusing state based on a signal output from the imaging unit, a determination unit configured to determine whether an in-focus position is present within a predetermined range from a current position of a focus lens based on the detected focusing state, a control unit configured to perform control to correct the position of the focus lens moved by a manual operation according to a result of the determination made by the determination unit, and an acquisition unit configured to acquire from a storage unit a movement speed of the focus lens corresponding to the manual operation, wherein the control unit performs control to move the focus lens at a speed determined based on the movement speed acquired from the storage unit.

Abstract: Autofocusing a camera while zooming may include zooming the lens to a first zoom position, measuring a first object distance from the camera to an object on which to focus, determining a first focus start position using the first object distance, performing a first autofocus using the first focus start position as a starting point, thereby determining a first focus position. A first lookup object distance may be determined based on the first determined focus position. A first correction factor may be calculated as a ratio between the first lookup object distance and the first object distance. The lens may be zoomed to a second zoom position, and a second focus position may be determined using a second object distance based on the first object distance and a second correction factor based on depths of field at the second and first zoom positions.

Abstract: An immersion objective has a numerical aperture of 1.42 or higher, and includes in order from the object side a positive first lens group, a positive second lens group, and a negative third lens group. The first lens group includes a first cemented lens that includes a plano-convex lens and a first meniscus lens, and a positive lens. The second lens group includes a plurality of cemented lenses. The third lens group includes in order from the object side a second cemented lens that includes a positive lens and a negative lens, a negative lens that has a concave surface facing the object side, and a positive lens. When H is a maximum height of an axial marginal ray, f is a focal length of the objective, and NAob is the numerical aperture, the objective satisfies a conditional expression below 3.5?(H/f)×NAob?5.2??(1).

Abstract: A camera lens is provided and includes: in sequence from an object side to an image side, a first lens having a positive refractive power; a second lens having a refractive power; a third lens having a negative refractive power; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power; a sixth lens having a negative refractive power. The camera lens satisfies the following relation: f/f6<?1.0; f/f4>1.5; in which, f denotes an effective focal length of the camera lens, f4 denotes an effective focal length of the fourth lens, f6 denotes an effective focal length of the sixth lens. The above-mentioned camera lens facilitates high resolution while improvement of field angle, and miniaturization of the camera lens.

Abstract: A six-piece optical lens for capturing image and a six-piece optical module for capturing image are provided. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power and a sixth lens with refractive power. At least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.

Abstract: A photographing optical lens assembly 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 and a seventh lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has negative refractive power. The sixth lens element has at least one of an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the sixth lens element comprises at least one inflection point. The seventh lens element has an object-side surface and an image-side surface being both aspheric.

Abstract: An optical lens assembly includes a first lens of a concave image surface near its periphery, a second lens of a plastic material, a third lens of a concave object surface near the optical-axis and a concave image surface near its periphery, a fourth lens of a concave object surface near the optical-axis, a fifth lens of a concave object surface near its periphery and a convex image surface near the optical-axis.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens has positive refractive power and a convex image-side surface. The second lens has negative refractive power. The third lens has negative refractive power. The fourth lens has negative refractive power and an inflection point formed on an image-side surface thereof. The fifth lens has positive refractive power and a convex image-side surface.

Abstract: An imaging lens includes first, second, third, fourth, fifth, sixth and seventh lens elements arranged in a sequence from an object side to an image side along an optical axis. Each lens element has an object-side surface and an image-side surface. The object-side of the third lens element has a convex portion in a vicinity of a periphery. The object-side of the fifth lens element has a convex portion in a vicinity of the optical axis and a concave portion in a vicinity of a periphery. The object-side of the sixth lens element has a concave portion in a vicinity of a periphery. All of lens elements having refracting power of the imaging lens are the first, second, third, fourth, fifth, sixth and seventh lens elements.

Abstract: An imaging lens system comprises, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with refractive power; a third lens element with refractive power having object-side and image-side surfaces being aspheric, at least one surface thereof having at least one inflection point; a fourth lens element with refractive power having a concave object-side surface and a convex image-side surface; a fifth lens element with refractive power having an aspheric object-side surface and an aspheric concave image-side surface, the image-side surface thereof having at least one inflection point.

Abstract: An optical lens assembly includes five lens elements and provides a TTL/EFL<1.0. In an embodiment, the focal length of the first lens element f1<TTL/2, an air gap between first and second lens elements is smaller than half the second lens element thickness, an air gap between the third and fourth lens elements is greater than TTL/5 and an air gap between the fourth and fifth lens elements is smaller than about 1.5 times the fifth lens element thickness. All lens elements may be aspheric.

Abstract: A zoom lens forms an intermediate image at a position conjugate to a reduction side imaging plane and forms the intermediate image again on a magnification side imaging plane. The zoom lens includes a plurality of lens groups including at least two movable lens groups, which move by changing spacings between the groups adjacent to each other in a direction of an optical axis during zooming, at a position closer to the reduction side than the intermediate image. Among the plurality of lens groups, a final lens group closest to the reduction side has a positive refractive power, and remains stationary with respect to the reduction side imaging plane during zooming. The zoom lens satisfies predetermined conditional expressions (1) and (2).

Abstract: On embodiment of the invention discloses an optical lens including five lens group and an aperture stop. Each lens group includes at least one lens with refractive power, and the aperture stop is fixed in a position between a second lens group and a third lens group. Further, a distance between a first lens group and a fifth lens group remains fixed during zooming or focusing, and respective distances of the second lens group and a fourth lens group relative to the fifth lens group vary during zooming or focusing.

Abstract: Provided is a microscope system including: an optical fiber in which laser light emitted from a light-source apparatus propagates; a microscope that irradiates a specimen with the laser light propagated in the optical fiber and that obtains an image of the specimen; a mode-scrambling device portion that causes elastic waves to propagate in the optical fiber to form elastic wave interference fringes in the optical fiber; and a control device that controls the driving of the mode-scrambling device.

Abstract: A surgical system has a surgical microscope with an imaging optical unit and a control unit for setting imaging parameters of the microscope. The system further has an image processing device for overlaying an overlay image stored in the image processing device with an image generated by the microscope. A data processing unit is connected to the control unit of the microscope and to the image processing device. The control unit is configured such that, before a change of at least one imaging parameter of the microscope from a first value to a second value, it stores both the first value and the second value and makes them available to the data processing unit. The image processing device is configured in such a manner that it modifies the overlay image in a manner corresponding to the stored first and second values of the at least one imaging parameter.

Abstract: The disclosure relates to a pixel array for an electrofluidic display element, comprising a plurality of adjacent pixels that form the pixel array, each pixel having a pixel chamber with a polygonal, preferably rectangular, pixel surface and a height. Each pixel has at least one main reservoir channel which opens, via a first width (D) and length (L), into the pixel chamber and a single- or multi-part reservoir channel which surrounds the chamber, borders the pixel surface and opens, along its length and a second width into the pixel chamber. A polar and/or electrically conductive liquid is or can be held in the pixels, said liquid being capable of motion back-and-forth between the reservoir channels and the pixel chamber by the application of an electric field, and the reservoir channels surrounding adjacent pixels run towards each other in a corner region in which the adjacent pixels border one another.

Abstract: A device disclosed herein includes a feedback measuring circuit to measure a signal flowing through a movable MEMS mirror. Processing circuitry determines a time at which the signal indicates that a capacitance of the movable MEMS mirror is substantially at a maximum capacitance. The processing circuitry also determines, over a window of time extending from the time at which the signal indicates that the capacitance of the movable MEMS mirror is substantially at the maximum to a given time, a total change in capacitance of the movable MEMS mirror compared to the maximum capacitance. The processor further determines the capacitance at the given time as a function of the total change in capacitance, and determines an opening angle of the movable MEMS mirror as a function of the capacitance at the given time.

Abstract: A mems scanner package and a scanning projector including the same are disclosed. The MEMS scanner package includes a MEMS scanner including a mirror surface for reflecting light, a magnet disposed behind the MEMS scanner, a lower case having an accommodation space formed therein to accommodate the magnet, an upper case having an opening formed therein to pass light, reflected from the MEMS scanner, therethrough, and a transparent cover unit for covering the opening. The transparent cover unit is embodied as a transparent member, and is coupled to the upper case while being inclined at a predetermined inclination angle with respect to the MEMS scanner.

Abstract: In an aberration-correcting method according to an embodiment of the present invention, in an aberration-correcting method for a laser irradiation device 1 which focuses a laser beam on the inside of a transparent medium 60, aberration of a laser beam is corrected so that a focal point of the laser beam is positioned within a range of aberration occurring inside the medium. This aberration range is not less than n×d and not more than n×d+?s from an incidence plane of the medium 60, provided that the refractive index of the medium 60 is defined as n, a depth from an incidence plane of the medium 60 to the focus of the lens 50 is defined as d, and aberration caused by the medium 60 is defined as ?s.

Abstract: A device is provided for processing a light/optical radiation including at least two reflective optical elements defining a multi-pass cavity so that at least one of the optical elements reflects the light radiation at least twice, at at least two different reflection positions, and including at least one element, called a corrective element, having at least one position, called a corrective position, producing a reflection or a transmission of the optical radiation, and the surface of which is irregular so that the spatial phase profile of the corrective position has a different phase shift for several different reflection/transmission points of the corrective position.

Abstract: There is provided a head-up display apparatus including: a display device that is provided inside an instrument panel and projects display light, and an optical member that reflects the display light projected from the display device so as to guide the display light to a windshield. At least a part of the optical member is positioned outside the instrument panel.

Abstract: An anti-glare head-up display system for vehicles includes a projection imaging unit and a curved mirror. The projection imaging unit is in an upper region of a cabin of the vehicle. The curved mirror is on a top surface of an instrument panel of the vehicle. The curved mirror includes a doped glass, a high-reflection coating and a dark coating. The doped glass and the dark coating absorb visible light. The high-reflection coating is on a surface of the doped glass facing the projection imaging unit and has a high-reflection effect at wavelengths corresponding to light sources used by the projection imaging unit. The dark coating is on another surface of the doped glass opposite with the projection imaging unit. Light rays emitted by the projection imaging unit are projected onto the curved mirror, and light rays reflected from the curved mirror are projected onto the windshield to form a virtual image in front of the windshield.

Abstract: A system and method for canceling vibrations in a head-up display device displaying a projected image superimposed over a field of view of a driver of a vehicle includes a mounting plate fixed to the vehicle and supporting a combiner panel while allowing the combiner panel to be rotated about a rotation axis. An image source generates a signal corresponding to the projected image, which is then projected upon the combiner panel by a picture generating unit. A rotation sensor measures rotation of the combiner panel and causes a displacement compensation controller to shift the projected image to offset displacement caused by vibration which would otherwise cause the projected image to appear to move. In this way, unwanted movement of the projected image caused by vibration is effectively cancelled-out. Alternative arrangements of components of the system are disclosed. A method for vibration cancellation in a HUD device is also provided.

Abstract: Example systems and methods are described that help increase the situational awareness of a user of a helmet, such as a motorcycle helmet. One or more cameras are physically coupled to the helmet, where each camera includes a lens and an associated image sensor. Each camera is configured to generate a video feed, which is presented to a user on a display. The video feed represents a field-of-view around the helmet, and may be projected onto a surface, such as the visor of the helmet, thereby enabling enhanced situational awareness for the user of the helmet.

Abstract: A display system includes a display alignment tracker configured track the position of a first signal and the position of a second signal. The display alignment tracker optically multiplexes a portion of a first signal and a portion of the second signal into a combined optical signal and measures a differential between the first signal and the second signal.

Abstract: The present invention discloses a short-range optical amplification module, which includes a first phase delay plate, a transflective mirror, a second phase delay plate and a reflective polarizing plate that are arranged sequentially, wherein: the transflective mirror includes a first optical surface and a second optical surface; the first optical surface is adjacent to the second phase delay plate; the second optical surface is a transflective optical surface, and the second optical surface is adjacent to the first phase delay plate; the focal length fs2 of the reflection surface of the second optical surface meets the following condition: F?fs2?5F, wherein F is the system focal length of the short-range optical amplification module, and F meets the following condition: 10 mm?F?35 mm.

Abstract: A user wearing a virtual reality headset and holding a real-world input device, uses a finger to input data into the real-world input device under visual assistance within the virtual world. A corresponding virtual input device is positioned within the virtual world in a position similar to the position of the real-world input device relative to the headset, and a fingertip marker upon an input map of the virtual input device in the virtual world is positioned similar to the position of the real-world user's fingertip relative to the real-world input device, thus providing realistic visual assistance in the virtual world for reaching and stroking the desired key or point on the real-world input device.

Abstract: There is provided a display control device capable of ensuring the user's field of vision while keeping the user safe when the user is using a see-through head-mounted display, the display control device including: a situation acquisition unit configured to acquire information about a situation where a see-through display is being used, and a display control unit configured to perform display control on the see-through display using the information acquired by the situation acquisition unit so that a display of the information on the see-through display gradually becomes clearly visible.

Abstract: An eyeglass-type display apparatus includes an eyeglass-front to be placed in front of the eyes of a user, left and right temples connected to the eyeglass-front and worn on the head of the user, a connector that adjusts the inclination of the eyeglass-front by rotating the eyeglass-front relative to the left and right temples, and an image display unit that is fixed to the eyeglass-front and projects image light onto an eyeball of the user. An axis of rotation of the connector is positioned on the eyeglass-front side of the center of the user's eyeball as viewed from the side.

Abstract: A display device displays video for a virtual image. The display device includes a video generation unit generates image light representing the video, a concave mirror has a reflective surface on which the image light is reflected, and a support mechanism adjusts a position of the concave mirror. The concave mirror has, in each position on the reflective surface, a first radius of curvature in the first direction and a second radius of curvature in a second direction. The first radius of curvature and the second radius of curvature individually change and have different rates of change. The reflective surface has a shape following a partial region on an outer surface of an ellipsoid. The ellipsoid has a radius along the first direction that is greater than a radius along the second direction and a radius along a third direction orthogonal to the first direction and the second direction.

Abstract: A display system of a vehicle includes a camera disposed at a vehicle and having a field of view interior of the vehicle that encompasses a head region of a driver of the vehicle. An image processor is operable to process image data captured by the camera to determine a location of both eyes of the driver of the vehicle. A display device is operable to display or project a first image and a second image for viewing by the driver of the vehicle. A first reflector element that is adjusted, responsive to image processing by the image processor of image data captured by the camera, to reflect the first and second images so that a left eye of the driver views the reflected first image and a right eye of the driver views the reflected second image.

Abstract: The present invention relates to an offset image wedge for use on a bore-sighted rifle that does not need to be exactly accurately mounted to the rifle because the offset image wedge is mounted directly onto the scope via a clamping mounting device and aligned optically by rotating the clamping mounting device on the scope until dual displayed images overlay each other. The offset image wedge allows for a dual image which allows it to be aligned in the field, and it allows for the user to choose either a bore-sighted image or an offset image without removing the wedge. This dual image capability is accomplished by having a wedge with a smaller diameter than the outer perimeter of the objective lens of the scope of the rifle. The use of a smaller diameter wedge allows the objective lens of the scope to continue to operate normally while the wedge delivers the offset image at the same time.

Abstract: A video wall display device can include a multi-panel unit including a first display panel and a second display panel, the first display panel having a first display area adjacent to the second display panel having a second display area; a first optical member disposed adjacent to a boundary between the first display area and the second display area; and a second optical member disposed on the first optical member, across the multi-panel unit and including a tapered portion, in which the tapered portion of the second optical member is inclined from an edge of the first display area or an edge of the second display area toward the boundary between the first display area and the second display area.

Abstract: A dynamic imaging system of an endoscope that adjusts path length differences or focal points to expand a usable depth of field. The imaging system utilizes a variable lens to adjust the focal plane of the beam or an actuated sensor to adjust the detected focal plane. The imaging system is thus capable of capturing and adjusting the focal plane of separate images captured on separate sensors. The separate light beams may be differently polarized by a variable wave plate or a polarized beam splitter to allow separate manipulation of the beams for addition of more frames. These differently focused frames are then combined using image fusion techniques.

Abstract: A 2D/3D switchable display device is disclosed. Said 2D/3D switchable display device comprises: a backlight panel, a first liquid crystal display panel at a light emergent side of the backlight panel, and a black-and-white second liquid crystal display panel at a light emergent side of the first liquid crystal display panel; wherein during 3D display, the second liquid crystal display panel is fully light-transmissive; during 2D display, liquid crystal molecules in the second liquid crystal display panel are arranged irregularly so as to scatter light emitted from the first liquid crystal display panel.

Abstract: An optical element includes a first translucent member that contains a resin material and a half mirror film formed on a surface of the first translucent member. The half mirror film includes a silver film, a first dielectric multilayer film positioned between the silver film and the first translucent member, and a second dielectric multilayer film positioned on an opposite side of the silver film than the first translucent member. The first dielectric multilayer film includes a first aluminum oxide film in contact with the silver film, and a titanium oxide film in contact with the first aluminum oxide film on the first translucent member. The second dielectric multilayer film includes a zirconium oxide-based dielectric film and a second aluminum oxide film in contact with the zirconium oxide-based dielectric film. One of the second aluminum oxide film and the zirconium oxide-based dielectric film is in contact with the silver film.

Abstract: A stereoscopic display device is provided. The stereoscopic display device includes: a display panel, including a plurality of first display units and a plurality of second display units arranged alternately; a grating, disposed on a light exiting side of the display panel and including a plurality of light-transmitting regions and a plurality of light-shielding regions, wherein the display device includes a lens with a light convergence action at a position corresponding to each of the light-transmitting regions of the grating. In this way, while reducing a distance from the grating to the display panel, it is possible to ensure a 3D displaying effect be obtained at a longer distance.

Abstract: Provided is a stereoscopic display device, including: a base member transmitting an incident beam; and a three-dimensional effect forming part on a first surface of the base member, wherein the three-dimensional effect forming part has a pattern, the pattern having multiple pattern units arranged in a concentric circular, elliptical or polygonal radial form, each of the pattern units having an inclined surface having an inclination angle with respect to the first surface, and wherein when an incident beam is incident to a central portion of the pattern, the pattern guides the incident beam in a first surface direction toward which the first surface looks or a second surface direction toward which a second surface opposite to the first surface looks, thereby displaying a line-shaped beam having a three-dimensional effect in a first path resulting a pattern arrangement direction.

Abstract: A display device for installation in a vehicle can include a first display configured to output first light forming first visual information; and a light synthesizing unit configured to pass the first light through the light synthesizing unit, and reflect second light and third light generated by different light sources, in which the light synthesizing unit includes a first light synthesizing portion disposed with a first surface of the first light synthesizing portion facing a first direction, and the first light synthesizing portion is configured to pass the first light through the first light synthesizing portion and reflect the second light; and a second light synthesizing portion disposed with a second surface of the second light synthesizing portion facing a second direction different from the first direction, and the second light synthesizing portion is configured to pass the first light through the second light synthesizing portion and reflect the third light.

Abstract: A device for measuring an aberration has an image sensor, projection optics for optically projecting onto the image sensor, an optical unit for influencing the optical projection onto the image sensor so that the result on the image sensor is a multiple image of a plurality of sub-images, wherein the optical unit has at least one region per sub-image, wherein the regions influence different lateral portions of a wavefront incident on the projection optics in different ways, and an evaluator configured to determine information relating to the aberration based on the multiple image.

Abstract: According to an embodiment of the present disclosure, an image capturing optical system includes a first lens group having a positive refractive power and disposed along an optical axis and to face an object. A second lens group has a negative refractive power and disposed along the optical axis and adjacent to the first lens group, and second lens group includes a focus correction lens to correct a difference in a focused position according to a variation in a position of the object. A third lens group has a positive refractive power and disposed along the optical axis. A subsequent lens group adjacent the third lens group and disposed along the optical axis and to face an image of the object, and the lens group subsequent to the second lens group includes a camera shake correction lens to move in a direction perpendicular to the optical axis.

Abstract: An image stabilization apparatus for a lens apparatus that moves an image stabilizing lens perpendicularly to optical axis includes a fixed barrel, a lens moving frame holding the image stabilizing lens and movable relative to the fixed barrel perpendicularly to the optical axis, an actuator that drives the lens moving frame relative to the fixed barrel, and the encoders used to determine the position of the lens moving frame relative to the fixed barrel. Each encoder includes a scale fixed to either the lens moving frame or the fixed barrel and a detector fixed to the other, the scale is arranged so that its grating is arranged in a radial direction about the optical axis so that the encoder has sensitivity to radial displacement of the lens moving frame about the optical axis which is higher than sensitivity to rotational displacement of the lens moving frame about the optical axis.