Abstract: Precision optical mounts that carry and reliably position an optical element so that a plurality of such optical mounts can be arranged in a compact and optically efficient system, wherein opposing optical elements are held in relatively close proximity to one another without introducing distortion. A stationary back plate is arranged in spaced facing alignment with a face plate for importing a tilting or translational movement to the face plate and to an optical element that is to be carried thereby. The optical mount may be disposed in vertical, upstanding alignment with respect to a support surface to position the optical element (e.g. a mirror) to receive a beam of optical energy. In the alternative, the optical mount may function as a mounting platform to be disposed in horizontal alignment with respect to the support surface so that an optical element (e.g. a prism) can be supported thereupon.

Abstract: A coil unit on which a focus coil and tracking coils are formed is arranged in a magnetic gap of a magnetic circuit including at least one magnet polarized on two poles in the focusing direction. The magnet and the tracking coils are arranged so that the boundary between the north pole and the south pole of the magnet polarized on two poles in the focusing direction falls within the width formed by the horizontal sides of the tracking coil in the focusing direction, the focusing direction is perpendicular to the focusing direction, when the coil unit is moved in the focusing direction.

Abstract: A lens barrel includes a lens movable in a direction orthogonal to the optical axis of the lens barrel, a movable member that holds the lens, a fixed member that regulates movement of the movable member in a direction of the optical axis, at least three balls placed between the movable member and the fixed member, each of the balls being held in a holding portion formed in one of the movable member and the fixed member so as to roll and to allow relative movement between the movable member and the fixed member, an urging member that urges the movable member toward the fixed member, a driving unit that generates force for moving the movable member in two directions orthogonal to the optical axis, and a position detecting mechanism for detecting positions of the movable member in the two directions orthogonal to the optical axis.

Abstract: A lens barrel comprises first and second tubes, a base, a single motor, and a drive gear for transmitting a drive force of the motor to the first and second tubes. The drive gear comprises a cylindrical gear and a shaft gear having a shaft inserted in the cylindrical gear. The cylindrical gear and the shaft gear rotating about a common rotation axis. The cylindrical gear is interposed between a first feed screw and the motor, and the shaft gear is interposed between a second feed screw and the motor. Accordingly, zooming and focusing can be made by one motor, increasing density and integration and providing excellent space efficiency.

Abstract: A small, light weight drive apparatus is capable of driving an object in a predetermined direction, as well as being capable of micromotion in a rotation direction and in an orthogonal direction to the predetermined direction. A drive apparatus drives an object within a two dimensional plane including a first axis and a second axis orthogonal to the first axis. The drive apparatus includes a first stage on which the object is placed. A micromotion mechanism slightly drives the first stage in a direction of the second axis and in a rotation direction about a third axis orthogonal to the two-dimensional plane. A second stage holds the first stage without physically contacting the first stage. A non-contact holding mechanism disposed between the first stage and the second stage holds the first stage to the second stage in a non-contact manner allowing for micromotion of the first stage in the second axis direction and in the rotation direction relative to the second stage.

Abstract: An optical pick-up actuator of the present invention includes a lens holder having a objective lens and tracking and focusing coils, a frame for raising the lens holder in a magnetic field using a suspension wire, and a tilt driving magnetic circuit for driving the actuator in a third direction as well as focusing and tracking directions.

Abstract: The invention comprises an alignment element for a multiple channel sight and method. In accordance with one embodiment of the invention, an alignment element (456) may comprise a first prism (492) and a second prism (494). The second prism (494) may be disposed proximate to the first prism (492). An adjustment device (506) may rotate the first prism (492) with respect to the second prism (494) to deviate an image of a first channel (54, 56) at an image plane (300).

Abstract: A zoom lens barrel which is an integrated zoom and focus drive type zoom lens barrel that moves lens units on a single zoom line having plurality of focusing sections and plurality of zooming sections, wherein the single zoom line has characteristic that the “rate of change of the relative distance of the two lens units with regard to a barrel rotation angle” in each focusing section becomes smaller in the focusing sections of the telephoto side.

Abstract: An apparatus and method for locking a focus position of a lens assembly without causing the lens cell to tilt, comprising: a spacer interposed between the lens cell and the focus mount. The spacer is received into a sleeve that is integral with the focus mount. The sleeve projects radially outward from the focus mount such that the spacer can be raised and lowered radially with respect to the focus mount. The spacer has a cylindrical body with a radial flange at one end. Moreover, the spacer has two ridges that extend downward from a lower surface of the flange, each of which is received into a corresponding groove on the sleeve, thus, preventing the spacer from rotating within the sleeve. The spacer also has an upwardly raised rim extending from an upper surface of the flange. The rim is slidably secured into a slot of the focus mount, which prevents lateral movement of the spacer.

Abstract: An assembly for providing an adjustable optical train is disclosed. An adjustable optical train is comprised of a plate having a channel formed therein. A submount suitable for mounting an object such as an optical component (e.g., holographic medium, lens, prism, etc.) engages the channel so the submount is suitable for slidable movement along the channel. In an exemplary embodiment, the submount further comprises a fastener. The fastener may include an appendage for engaging the channel and a holder coupled to the appendage. The holder is suitable for anchoring the appendage thereby securing the appendage to the channel thereby securing the submount to the plate.

Abstract: A heavy-duty precision support for an optical instrument, especially for an astronomical telescope is disclosed, comprising a base carrier which is mounted on a stationary base so as to be rotatable about a vertical axis and an instrument holder for holding the optical instrument which is supported at the base carrier so as to be swivelable about a horizontal axis. To provide a support which is simple to produce and assemble and which has excellent stiffness, positioning accuracy and dependability, the base carrier is supported against the base in the manner of a ball joint by means of a central bearing. Further, a bearing portion of the base carrier is guided axially at the base.

Abstract: In a device for displacing an optical element 2 along the optical axis, in particular a lens of large diameter in an objective, the optical element 2 is supported by a retaining ring 1 acted upon by an adjusting device 8 with a coarse adjusting drive 9 and a fine adjusting drive 10. The retaining ring 1 is connected, via solid joints 4 which have a substantially greater stiffness transverse to the optical axis than along the optical axis, to a supporting ring 3 which is arranged on a mount or which forms a part thereof. The solid joints 4 are arranged between the retaining ring 1 and the supporting ring 3 in such a way that the retaining ring 1 can be displaced along the optical axis upon actuation of the adjusting device 8.

Abstract: A pickup device has a light source, an objective lens for converging rays of light emitted from a light source onto a recording medium, a lens holder for holding the objective lens, and supporting means for movably supporting the lens holder. The pickup device is uniquely featured in that a part of the objective lens and a part of the lens holder are movable relative to each other so as to adjust an inclination of an optical axis of the objective lens.

Abstract: A multi-position optic mount is disclosed which provides for automatic movement of an optic element between an engaged position, in which the optic element intersects an optical path, and a disengaged position, in which the optic element avoids an optical path. The optic mount may be used for a broad range of optical elements including: lenses, filters, etalons, gratings, retroreflectors, wave guides, fiber optics, lasers, photo-detectors, etc. A unique activation capability is provided in which an active actuator and passive actuator are utilized to move the mount between the engaged and disengaged positions.

Abstract: A body of a lens frame, which is a lens barrel of the present invention, consists of an inner frame for holding a lens, an intermediate frame in which an adjusting screw is screwed, and an outer frame in which an adjusting screw is screwed. The frames are connected to one another by parallel springs. In the case of this lens frame, the inner frame is displaced in the direction of X-axis or a horizontal axis by screwing the adjusting screw thereinto in the direction of the horizontal axis and screwing another adjusting screw thereinto by the direction of a vertical axis. Thus, the inner frame is displaced in Y-direction through the intermediate frames. Consequently, the translation of the position of the optical axis of the lens is performed without inclination of the intermediate frame. Hence, the adjustment of the position of the optical axis is easily achieved. Moreover, this lens frame achieves a reduction in the cost of components thereof.

Abstract: Binoculars includes a pair of lens barrel bodies and a pair of eyepiece portions. At least one of the pair of eyepiece portions is provided with an eyepiece frame fixed on one of the lens barrel bodies, a plurality of eyepiece lenses, a diopter adjusting portion that moves all of the plurality of eyepiece lenses by the same movement amount in an optical axis direction, and a via-rotation-drawable type eye cup portion. The diopter adjusting portion includes a cam pin fixed relative to the eyepiece frame and a diopter ring that is guided by the cam pin in the optical axis direction by rotating of the diopter ring around an optical axis to move all of the plurality of eyepiece lenses in the optical axis direction.

Abstract: An adjustable assembly comprises a base (mount ring 1), an adjustable part (inner ring 3), a lever (tilting lever 5) and a drive (drive element 6). The lever (tilting lever 5) is connected to the base (mount ring 1) and to the adjustable part (inner ring 3) via two elastic solid pivoting joints (7, 8) oriented in parallel. One of the two solid pivoting joints (7) is divided into two pivoting joint parts (7a, 7b), which are arranged such that along their pivoting axis (9) they are offset sideways on either side of the second solid pivoting joint (8).

Abstract: In this zoom lens barrel, its cam ring has three sets of three cam grooves for advancing or retracting a first group frame, a focus frame and third group frame. The three cam grooves include a cam follower introducing groove connected to ends of two cam grooves for the focus frame and third group frame and a joint groove for joining two cam grooves for the first group frame and the focus frame. When inserting a cam follower of the first group frame into the cam groove, after it is inserted into the introducing groove, it is passed through the cam groove for the focus frame and then, passed through the joint groove and fit to the cam groove for the first group frame. Further, when inserting the cam followers of the focus frame and third group frame into the cam groove, after it is inserted from the introducing groove, it can be fit to the focus frame and third group frame separately.

Abstract: This lens barrel comprises a first group frame supported by two first guide shafts and a second guide shaft such that it is capable of being advanced or retracted, a focus frame, a focus frame holding portion, and a third group frame. The first guide shafts are bonded and supported by the focus holding frame in parallel such that both ends thereof are exposed. The first group frame and the third group frame are supported slidably by both end portions. Further, the second guide shaft supports the focus frame slidably. An end of the second guide shaft is supported through a short fitting length while it is not fixed to the first group frame and the other end thereof is supported slidably by the third group frame through a short fitting length. Therefore, in this lens barrel, the accuracy in advancement and retraction of respective members is excellent and an efficiency of storage space is excellent thereby contributing to reduction of the size, achieving compactness.

Abstract: A rotary positioning device useful for positioning optical devices such as polarizing prisms, or any similar optical device through which light is transmitted and which requires precise rotation thereof. The device is particularly designed to rotate through a limited arc at an extremely fine degree of resolution. The device utilizes cylindrical bearings formed from materials having a spring constant effective to insure lateral stability without experiencing irreversible deformation. In a preferred embodiment, a Beryllium-Copper alloy is utilized for forming the cylindrical bearings.

Abstract: In an image-forming lens, an inclined slope or section is provided at a marginal annular region on a surface of an optical member and a light shield is provided on this inclined slope or section. The optical member is mounted longitudinally so that the inclined slope or section is located near where off-field fight (i.e, fight from outside the designed field of view of the lens) reflects off an inner surface of a holding member or at the periphery of an optical member. Thus, the inclined slope or section with light shield acts to shield the reflected off-field light from passing to the image. The invention finds particular advantage in very small lenses that include optical members less than 3 mm in diameter.

Abstract: A point-of-purchase display featuring a fresnel lens in a frame attached to an advertising display device. The advertising display device includes a place for signage and is adapted for attachment to the top or bottom of a store shelf, or into a price channel along the front edge. The fresnel lens is of low magnification such that when a small package or container with printed matter is viewed through the lens it can be seen with both eyes, in its entirety.

Abstract: The present invention pertains to a device designed to enable an objective concentrically placed therein to pivot about two mutually perpendicular axis crossing at a point of intersection on the optical axis (X) of the pivoting objective (Y, Z), maintained in an objective holder (OH) which may be pivotably laid into bearings (L1, L2) with two degrees of freedom of a ball surface; said bearings (L1, L2) are mounted against a holding frame (HR) with swivel setting means (KY, KZ) provided thereon, one of which is operatively linked with a meridian sector gear (SZ1, SZ2) and the other with an equatorial sector gear (SZ1, SZ2; SY1, SY2) being torsion-proof driven due to a torsional safety device (FK, FN), each on a circle about a point of intersection on the axis (M), while each equatorial sector gear (SY1, Sy2) may swivel in a pivoting bearing (KK1, KK2) and placed movable into a guide (SA) on a meridian circle on the objective holder (OH).

Abstract: Assembly of an optical element and a mount, in which the optical element is coupled by means of numerous lugs to a rigid intermediate ring, which itself is coupled by adjusting members or passive decouplers to the mount for connection to a housing and/or to a further mount.

Abstract: A rotary lens positioning mechanism with lens position feedback, in one embodiment, includes a worm-gear drive motor assembly, a Geneva gear drive assembly, a lens carrier disk, and a lens position feedback means. The worm-gear drive motor assembly includes a drive motor, which for some applications can be an N-scale model-train locomotive electric drive motor, and a worm pinion gear. The lens position feedback means, in one embodiment, includes two sensors each comprising an emitter-detector light-emitting diode (LED) pair, two reflective surfaces, and a computer. As the lens carrier disk rotates, the LED emitter of the sensor emits light to the reflective surface. If the light hits a reflective surface, it is reflected back to the LED detector of the sensor, turning that particular sensor on. The on and off signals of the respective sensors are translated into binary “words” to indicate which lens is currently intersecting the light.

Abstract: The present invention relates to an adjustable monocular eye shield for use with telescopes and similar instruments. The invention prevents light from entering the retina of the eye not being used to view an image when installed and properly positioned on a telescope eyepiece or ocular. The invention is normally fitted over an eyepiece's barrel and includes a substantially enclosed optical mask proportioned such to block both the medial and peripheral vision in one of the users' eyes and prevent impinging light from entering the retina of the same eye. The adjustable monocular eye shield is readily adapted to different users' and types of telescopes.

Abstract: In An object lens supporting unit compensating for inclination of an object lens L, which comprises a supporting frame (2), a base member (3), an adjusting mechanism (4), the adjusting mechanism 4 comprises a pedestal portion (41), protrudent portions (42), and holding unit (5). The pedestal portion (41) has a curved surface formed along a surface of a supposed revolution body. The supposed revolution body is formed by rotation of an ellipse D around a minor axis thereof. The supposed revolution body is further inscribed to a supposed spherical surface C formed around a central point. The central point is served by a principal point L1 of the object lens L supported by the supporting frame (2). The protrudent portions (42) are arranged so as to be in contact with the curved surface at positions which correspond to an area of the supposed revolution body inscribed to the supposed spherical surface C.

Abstract: A plurality of movable lenses included in a zoom lens system are driven individually by piezoelectric actuators provided one for each lens. Two driving rods are arranged at different positions along the same line in such a way that neither of the driving rods reaches into the driving stroke of the lens driven by the other. Each driving rod has a piezoelectric actuator provided at its end farther from the other. Alternatively, a plurality of piezoelectric actuators are fixed to a single base block having a groove or a surface level difference to restrict propagation of vibration between the piezoelectric actuators. A graduated member having N-pole and S-pole regions formed alternatively thereon with a predetermined pitch is fixed, parallel to the driving rods, to the driving device itself. A magnetic resistance sensor is attached to each lens frame so as to face the graduated member. Based on the outputs of the sensors, the positions of the individual lenses are detected.

Abstract: A lens holding structure in a lens block forming all or part of an optical system, the lens holding structure capable of attaining a compact lens block of inexpensive and simple construction by using a holding barrel having an outer diameter smaller than an outer diameter of the largest lens element to be included in the lens block. The largest lens element is fixed to another lens element to be included in the lens block or the holding barrel by a face thereof having a predetermined angle with respect to an optical axis of the lens block.

Abstract: An apparatus and method for generating two or more visible lines of light on a floor for the purpose of facilitating the layout process used in construction. The apparatus comprises a light beam generator producing two or more beams of light at 90° to each other and in a plane parallel to the plane of the floor. Subsequently cylinder lenses on the apparatus spread the beams and position them on the floor or target providing visible reference lines.

Abstract: An optical mount for an optical element which has an optical surface. The mount includes a first plate and a second plate which holds the optical element. The second plate has a spherical bearing surface that cooperates with the first plate so that the optical element pivots about a point on the optical surface. The mount has a single first adjustment device to pivot the optical element about one axis and a single second adjustment device to pivot the element about a second perpendicular axis.

Abstract: A correction element assembly for correcting misalignment of a beam of radiation with respect to a location on a target includes a correction element housing, and first and second piezo elements. The correction element is fixedly mounted in the housing and moveable therewith. The piezo elements are supported by a member having a first portion and a second portion. The first piezo element is mounted to the first portion of the member and to said housing, and moves the housing in a first direction. The second piezo element is mounted to the second portion of the member and to a base, and moves the housing in a second direction substantially perpendicular to the first direction.

Abstract: An optically adjusting device adapted to be used in a projector is provided. The optically adjusting device includes a frame having a plurality of frame members to define a space for containing an optical combiner therein, a plurality of light-receiving plates, each of which is disposed on one of the frame members for receiving a specific light beam and outputting the specific light beam to the optical combiner, and a plurality of adjusting plates, each of which is arranged between one of the frame members and a corresponding light-receiving plate for sequentially adjusting a position and orientation of the corresponding light-receiving plate with respect to the optical combiner.

Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.

Abstract: A peg system for joining modular optical translation stage assemblies and other optical test bench hardware that can allow an operator to build multiple types of translation stages and other optical test bench hardware configurations. The assemblies may include a peg that can couple a first translation stage to a second translation stage. The assembly may also have a fastener that secures the peg to the second translation stage. A third translation stage can be coupled to the second translation stage. The assembly allows an operator to build either an x-axis stage, an xy-axis stage or an xyz-axis stage. A disk or cylindrical post or post holder or other optical test bench hardware may also be used with the peg system to provide rotational degrees of freedom.

Abstract: A zoom lens comprises a fixed cylinder, an outer movable cylinder, and an inner movable cylinder which is provided in the interior thereof with a shutter and a front group lens. The front group lens is fixed by an outer frame which is fastened with the shutter. The outer frame retains a chain plate capable of being driven by a rotary plate of the shutter. The chain plate has an indicator portion. The inner movable cylinder is provided in the inner wall thereof with a reference indicium, which is level with and aligned with the indicator portion of the chain plate at such time when the zoom lens is located at various focusing positions.

Abstract: A two-dimensional driving apparatus including: a plurality of support wires for elastically supporting a movable mount; a first driving device connected to the movable mount by a first driving wire capable of being elastically deformed for linearly moving the movable mount in a first direction; and a second driving device connected to the movable mount by a second driving wire capable of being elastically deformed, and installed at the same height of the first driving device for linearly moving the movable mount in a second direction perpendicular to the first direction.

Abstract: A scanning device for an optical record carrier (1) comprises a high-numerical aperture dual lens objective system (10, 11) for focussing a radiation beam (7) on an information layer (3) of the record carrier. The lens (11) of the objective system closest to the record carrier is tilted by a tilt servo system in response to tilt of the record carrier. The tilt angle of the lens is preferably less than the tilt angle of the record carrier in order to reduce optical aberrations of the radiation beam such as coma and astigmatism.

Abstract: A projection optics box or assembly for use in an optical assembly, such as in an extreme ultraviolet lithography (EUVL) system using 10-14 nm soft x-ray photons. The projection optics box utilizes a plurality of highly reflective optics or mirrors, each mounted on a precision actuator, and which reflects an optical image, such as from a mask, in the EUVL system onto a point of use, such as a target or silicon wafer, the mask, for example, receiving an optical signal from a source assembly, such as a developed from laser system, via a series of highly reflective mirrors of the EUVL system. The plurality of highly reflective optics or mirrors are mounted in a housing assembly comprised of a series of bulkheads having wall members secured together to form a unit construction of maximum rigidity. Due to the precision actuators, the mirrors must be positioned precisely and remotely in tip, tilt, and piston (three degrees of freedom), while also providing exact constraint.

Abstract: The present invention is a bi-stable optical actuator device that is depowered in both stable positions. A bearing is used to transfer motion and smoothly transition from one state to another. The optical actuator device may be maintained in a stable position either by gravity or a restraining device.

Abstract: A thermal compensation system for an optical lens that has a focus adjustment with visible focus distance numerals and a juxtaposed index line for identifying the focus distance. The index line is provided on an internal ring slidably mounted to rotate circumferentially with respect to a barrel portion of the optical lens that includes the focus distance numerals. An actuator mounted within the optical lens includes a wax motor that is responsive to temperature changes and mechanical lever that engages both the wax motor and the ring for causing circumferential movement of a ring in response to actuation movement of the wax motor as caused by temperature changes. Further, an adjustment cam is provided for adjusting the relative positions of the wax motor and lever for calibrating the temperature responsive movements of the ring bearing the index line.

Abstract: A vision assist assembly, is provide, for selectable positioning of a one eye vision device in front of an eye of a wearer. The vision assist assembly includes a head cover mounting element for mounting on a head cover, such as a helmet and a positioning element having a proximal end portion and a distal end portion being directly or indirectly connected to the head cover mounting element via the proximal end portion. The positioning element includes an extended arm having a shaft being connected to, or integrally formed with, the distal portion. The shaft serves for mounting thereon the one eye vision device.

Abstract: A magnifying device for reading price tags on a store shelf. The magnifying device includes a device for magnifying price tags which is mounted on a store shelf between opposing edges of a price tag holding bracket. The device has a clip adapted for holding the device to the price tag holding bracket. A base for mounting a magnifying member to the clip. The base has a first end and a second end. A cavity is located in the base and extends through the base. A securing means hingedly secures the clip to the second end of the base. The securing means has a first portion and a second portion. The first portion is fixedly secured to an end of the clip. The second portion is fixedly secured to the second end of the base. A magnifying member for magnifying objects is mounted within the cavity.

Abstract: An optical component mounting device and method is disclosed where the optical components are disposed within a thin-walled tube and the tube is configured to produce an interference fit within the cylindrical opening of a mounting sleeve. The optical components are secured to the tube such that their optical axes coincide with the tube longitudinal axis. Mating of the optical mounting assembly to external reference surfaces precisely locates and aligns the optical axes with respect to an external reference axis. The optical mounting assembly provides at least two degrees of freedom to the optical components for facilitating alignment.

Abstract: An optical-element supporting device arranged to support and set one or a plurality of optical elements in respective predetermined positions in an optical axis direction, includes ring frames mounted respectively on the plurality of optical elements and each having a plurality of projections protruding in the optical axis direction, and a pinching structure for pinching the ring frames being piled up in the optical axis direction (the pinching structure comprising, for example, a lens barrel member which accommodates the ring frames mounted on the optical elements and leaf springs mounted near an end part of the lens barrel member in the optical axis direction), wherein the projections of the ring frames and respective pinching positions of the pinching structure are axially aligned in parallel with the optical axis direction.

Abstract: The lens switch apparatus of present invention comprises lens mounts, lenses, a carrier, rotating axes, at least one belt, gears, motion mechanisms and the power sources. The lens mounts include the first lens mount and the second lens mount. Several lenses are positioned on the lens mounts. The carrier, on which the above lens and the lens mounts are positioned, serves as the plate to move the lens. The motion mechanism, which further includes the first motion mechanism and the second motion mechanism. The first motion mechanism move the carrier toward the first direction to focus lens properly. Besides, the second motion mechanism move the first motion mechanism toward the second direction to align lens to the optical axis. The rotating axis, which comprises the first rotating axis and the second rotating axis. Through the first rotating axis, the first lens mount is coupled to the carrier. Similarly, through the second rotating axis, the second lens mount is coupled to the carrier.

Abstract: Disclosed herein is an improved lens focusing and holding arrangement for an imaging system of the type which may include a photosensor array. The lens may be in contact with a reference surface or surfaces formed within the imaging system housing and may be translatable along the surface in directions toward and away from the photosensor array in order to adjust the focus of the imaging system. A lens retention clip may be provided to secure the lens within the imaging system housing and to cause translational movement of the lens along the imaging system reference surface. When focusing the imaging system, the lens retention clip may be in a first operating condition in which the lens retention clip applies a relatively small force tending to hold the lens in contact with the housing reference surface.

Abstract: A magnifier for imaging film units is provided. A magnifying lens is coupled to a view box which may be a stationary view box or mass film motorized viewer for viewing X-ray images. A positioner is provided for positioning the magnifying lens proximate the particular area of interest of the image. Normally, the magnifier remains coupled to the view box, but may be detached such that the view box can operate as a standard view box. With this arrangement, standard view boxes are retrofitted with the present invention. The positioner is hinged to both adjust the focal distance of the magnifier and position the magnifier away from the view box in an open position which does not obstruct the view of the image. The positioner may be coupled to a longitudinal arm situated on a side of the view box which is manually moved or may be driven by one or more motors at the control of an operator's console. Patient information and positions of the magnifier may be entered via the operator's console and stored in a memory.

Abstract: An optical element holder having a simple structure and which is capable of being adjusted in six axes is disclosed. A movable plate is disposed among two pairs of side walls of a base, and a rotary plate for holding an optical element is integrally and rotatably held in the movable plate. The movable plate is adjusted by adjusting springs attached to one pair of side walls of the two pairs of side walls, and by adjusting screws attached to the other pair of side walls of the two pairs of side walls. The movable plate is moved along the base for adjustment with respect to the X and Y directions. The rotary plate is pushed by a coiled spring, which is rotated for adjustment with respect to the .theta. direction by an adjustment screw attached to the rotary plate. The movable plate and the rotary plate are integrally pushed toward the base by a plate spring, and by four adjustment screws attached to the rotary plate.

Abstract: An adjustable lens support assembly retains and supports a lens in fixed registration during the manufacturing process. The lens support assembly includes a plurality of adjustable spring-loaded lens retainer pins that enable a plurality of lenses of various diameters to be maintained therein. The adjustable lens retainer pins, preferably three (3) pins, extend upward from a circular base having a tapered upper surface. A spacer supports the base above the lens support arm a predetermined distance to provide sufficient clearance to permit of the operation a mechanism to pivot simultaneously the lens retainer pins. A lens pad is centrally disposed on the base to support the lens. When the lens is placed in the lens support assembly, the concave surface of the lens engages the lens pad and the outer edges of the composite lens engage the adjustable lens retainer pins. Each lens retainer pin includes a lower pin portion and an upper pin portion.