Abstract: A lens barrel includes a lens group including a fixed lens including one or more lenses and an adjustment lens including one or more lenses, and a lens frame to hold the lens group, including an adjustment lens frame to hold the adjustment lens and an aligning mechanism to hold the adjustment lens frame movably in a direction orthogonal to an optical axis of the lens group relative to the lens frame.

Abstract: A device to both support and focus a long camera lens is described. A user can hold the camera body with one hand and the support device with the other. In this way, it is easy to hold the camera steady while composing and taking a photograph, as the weight of the lens is supported in more than one place using both hands. The device can be attached to the focusing and/or zoom ring of a zoom or other lens, so that the hand holding the device can move the device to focus the camera. Such a device will be welcomed by both novice and professional photographers because it will help to prevent cramping and fatigue that can occur in the hands with extended camera use. In addition use of the device can also increase camera lens stability, especially for users with unsteady hands.

Abstract: The present invention relates to a variable magnification device and a telescopic sight using the same, and more particularly, to a variable magnification device which is capable of easily adjusting a magnification of a telescopic sight. The variable magnification device includes: a rotation bunch which has a ring shape conforming to the circumference of a barrel of a telescopic sight and includes a bent end formed on one side of the circumference of the rotation bunch; and a rod which is connected to the bent end and is bendable in the longitudinal direction of the barrel. The magnification of the telescopic sight can be adjusted with an aiming posture maintained, thereby allowing immediate hit on a target. In addition, a leverage effect can be used to easily and finely adjust the magnification of the telescopic sight with one hand, thereby preventing distortion of an aiming posture as maximally as possible.

Abstract: A variable focus lens system for eyeglasses is disclosed. The system consists of superimposed first and second thin lenses, simulating Alvarez lenses, with one side of each lens divided into Fresnel zones and zone boundaries. The second lens element is 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. The Fresnel zone boundaries may follow paths which enable equal, constant step size for the boundaries along their lengths. 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, is superimposed on the first and second lens elements.

Abstract: A lens is manufactured by hardening soft material filled inside a molding tool by cooling. The lens includes a convex lens portion having an optical axis, and a marking portion located outside of an effective diameter of the lens portion. The shape or the position of the marking portion is set to prevent deformation of the marking portion by contact with the molding tool due to shrinkage of the material during cooling.

Abstract: A noncontact form measuring apparatus emits a laser beam L. In the apparatus, a prism bends the laser beam into an X-axis direction, so that a Z-axis displacement of an objective optical system is converted by the prism into an X-axis displacement on a measurement coordinate system. A movement of an X-axis stage is converted into a Z-axis displacement on the measurement coordinate system. The apparatus moves an internal gear as a measurement object and the prism, reads X, Y, and Z coordinates at each focal point, and measures a three-dimensional form of inner teeth of the internal gear. The apparatus may translate the internal gear in a Y-axis direction, to measure a partial form of the inner teeth. The apparatus may turn the internal gear in an angular ?-direction, to measure a whole circumferential form of the inner teeth.

Abstract: A stand magnifier is provided, comprising a magnifier base to be placed on reading material or any other surface to be inspected, namely a contact surface, and a magnifier element having a grip and a magnifying body disposed on one grip end, with the magnifier element being detachably attached to the magnifier base and being pivotable relative to the contact surface when the magnifier base is attached, wherein the magnifier base is designed in at least two parts having at least first and second magnifier base parts mounted one inside the other in a light-tight fashion, and the magnifier element is designed as a separately usable hand magnifier and the grip is formed such that it touches the contact surface with its free grip end region.

Abstract: An optical module has a circuit carrier, a housed semiconductor element disposed on the circuit carrier, and a lens unit for projecting electromagnetic radiation onto the semiconductor element. The lens unit preferably includes a lens assembly with, say, three lenses and a diaphragm. The lenses, optionally together with the diaphragm, are aligned in a well-defined manner due to their geometric design so that no additional optical adjustment is necessary. The lenses are held in a type of lens holder that is an integral component of the housing of the semiconductor element.

Abstract: An optical bench 10 is cast from a single piece of material and provided with a number of optical component supports 14 which extend upwardly from a base 12. The optical component supports 14 are integral with the base 12, increasing their rigidity. The bench 10 may be cast with additional material in strategic areas to allow for future optimization of the bench 10—for example, the mounting of specific optical components throughout the bench 10. Further, the bench 10 may be provided with regions 24, 26, and 28 of varying rigidity by placing support struts 68 closer together in areas where greater rigidity is required. Apertures 30 may be provided in the bench 10 to enable the routing of conduits through the bench 10.

Abstract: Disclosed is a cardholder with dimensions approximating a standardized card carried by a person, the cardholder being made of a one-piece clear plastic material and may contain a viewing portion having fresnel contour lines and at least a pair of folded edges which form at least a pair of tracks of the cardholder for slipping on and off a standardized card such as credit and debit cards and the like. A method of making the cardholder including a cardholder shaped magnetic lens is also disclosed.

Abstract: An optical pickup actuator includes a base having a holder installed at one side thereof, a moving portion in which an objective lens is installed at the periphery thereof and a guide hole is formed, a bobbin coupled to the guide hole, a magnetic driving portion provided at the base and symmetrically arranged to make the moving portion perform focusing and tracking, and suspensions having one end supported at the holder and the other end fixed to the moving portion to be connected to the bobbin. Thus, since the magnetic driving portion is symmetrically arranged, a pitching mode and a rolling mode generated due to an asymmetrical structure are prevented. Also, the AC sensitivity and DC sensitivity can be improved.

Abstract: An optical assembly comprising an optical cube. A first optical transmitter chip and a first optical receiver chip are mounted on one surface of the optical cube. A first continuous printed circuit board is soldered to electrical surfaces of the first optical transmitter chip and the first optical receiver chip opposite the optical cube. A second optical transmitter chip and a second optical receiver chip are mounted on an opposite surface of the optical cube. A second continuous printed circuit board is soldered to electrical surfaces of the second optical transmitter chip and the second optical receiver chip opposite the optical cube. The first optical transmitter chip is optically aligned with the second optical receiver chip through the optical cube. The second optical transmitter chip is optically aligned with the first optical receiver chip through the optical cube.

Abstract: A device for mounting an optical element (1), for example for a lens element in a lens, especially in an exposure lens (2) in micro lithography, is provided with the following features: the optical element (1) is provided in its edge zone with support points (8, 9, 10). Counterbearing points (11) are disposed opposite the support points (8, 9, 10) of the optical element (1) in an outer mounting (3). Bearing members (12) are disposed between the support points (8, 9, 10) and the counterbearing points (11). The bearing members (12) are provided with spherical surfaces directed toward the support points (8, 9, 10).

Abstract: An optical pickup device-holding container, which is formed from a resin composition comprising a poly(arylene sulfide) (A) and an inorganic filler (B) and having a thermal conductivity of at least 1 W/mK; and an optical pickup device in which at least a light source, an objective lens and a light-receiving part are held in the holding container.

Abstract: An adjusting optical element mount (1) serves for the position of two components (2a, 2b) in relation to one another, in particular of two carrier elements for optical elements, such as mirrors or lenses, in particular as an axial and/or angle manipulator for lithography lenses. The components (2a, 2b) can be adjusted in relation to one another via the action of force (F, T). Each of the components (2a, 2b) has at least three hinges (4a, 4b, 4c, 4d, 5a, 5b, 5c, 5d). Each of the hinges (4a, 4b, 4c, 4d) of one component (2a) is connected in each case to a corresponding hinge (5a, 5b, 5c, 5d) of the respectively other component (2b) to form a pair of hinges (7a, 7b, 7c, 7d) via a lever element (6a, 6b, 6c, 6d) in each case.

Abstract: The present invention is a two position optical element actuator device utilizing a powered means to hold an actuation arm, to which an optical element is attached, in a first position. A non-powered means drives the actuation arm to a second position, when the powered means ceases to receive power. The optical element may be a electromagnetic (EM) radiation or particle source, an instrument, or EM radiation or particle transmissive, reflective or absorptive elements. A bearing is used to transfer motion and smoothly transition the actuation arm from the first to second position.

Abstract: The present invention is a bistable optical element actuator device utilizing a powered means to move an actuation arm, to which an optical element is attached, between two stable positions. A non-powered means holds the actuation arm in either of the two stable positions. The optical element may be a electromagnetic (EM) radiation or particle source, an instrument, or EM radiation or particle transmissive reflective or absorptive elements. A bearing is used to transfer motion and smoothly transition the actuation arm between the two stable positions.

Abstract: Flyglasses having two lenses, at least one of which is faceted and both of which are held in a mount that is preferably flat. The mount can be in the form of a so-called lorgnette having a handle made in the form of a small board which is especially suited for application of decorative patterns or advertizing or it can be in the form of conventional eyeglass frames or goggles.

Abstract: An optical pickup apparatus suited for reducing the size and thickness and capable of performing a tilt control of an objective lens with ease, and an optical disk apparatus.

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 magnifier for observing a surface includes a housing, a detachable window attachment coupled to a first end of the housing and an eyepiece coupled to a second end of the housing. A light source attachment is coupled to the housing for supplying light to the hollow interior of the housing. The light source attachment and housing each have major axes which extend in different directions and form an angle between approximately 110.degree. and 120.degree.. Photoconductive material serves as a light guide for directing the light from the light source attachment to the window attachment.

Abstract: A telescope housing has a removable finger accommodating ring secured thereto. The ring is coupled to the housing by a post having left and right flanges with upstanding distal ends opposedly projecting from one end of the post to be inserted into an aperture located in a latch on the ring. In this manner, various telescope assemblies of different magnification can be accommodated by the use of the removable ring which also enables convenient storage.