Abstract: The binocular system 100 includes monoculars 10, 20 in pairs and a coupling portion 30 coupling the monoculars 10, 20 in pairs, wherein: one monocular 10 has a connecting portion 11 on a side of an objective lens 13 thereof; the other monocular 20 has a connected portion 22 connectable to the connecting portion 11 on a side of an eye lens 24 thereof; the coupling portion 30 includes a first coupling portion 31 formed integrally with the one monocular 10, a second coupling portion 32 formed integrally with the other monocular 20, and a hinge portion 33 coupling the first coupling portion 31 and the second coupling portion 32 in such a manner that a mutual bending angle therebetween is adjustable centering around a bending axis B; and the one monocular 10 and the other monocular 20 are detachable from each other.

Abstract: A binocular system includes a first monocular, a second monocular, a first arm coupled to a base plate via a first hinge and coupled to the first monocular, and a second arm coupled to the base plate via a second hinge and coupled to the second monocular. Each of the monoculars rotates about a corresponding one of the hinges along an axis of rotation that is not parallel to an axis of collimation of each of the monoculars. The monoculars are collimated when rotated into a deployed position. The binocular system may also include a mounting bracket coupled to the base plate, a tilt base, interposed between the mounting bracket and the base plate and a tilt lever, having a cam that is operatively engaged with the tilt base, where actuation of the lever causes the base plate to tilt with respect to the mounting bracket.

Abstract: A binocular system includes a first monocular, a second monocular, a mounting bracket, a base plate, coupled to the mounting bracket, a first arm coupled to the base plate via a first hinge and coupled to the first monocular via a first guide rail, and a second arm coupled to the base plate via a second hinge and coupled to the second monocular via a second guide rail. The monoculars are independently moveable using the guide rails and the hinges. Collimation of the monoculars is maintained independently of movement of the monoculars side to side and fore and aft on the guiderails.

Abstract: Binoculars include first and second lens barrels. A bridge interconnects the lens barrels. First and second optical systems are accommodated in respectively the lens barrels. First and second focus lenses are included in respectively the first and second optical systems, for focus adjustment by moving in an optical axis direction. An operation barrel is secured to the bridge, and externally rotatable and movable in the optical axis direction between a focus adjusting position and a diopter adjusting position. A focus adjuster with gear teeth and screw threads moves the first and second focus lenses simultaneously in the optical axis direction when the operation barrel is rotated in the focus adjusting position. A diopter adjuster, including gear teeth, an intermediate rod and screw threads, moves the second focus lens in the optical axis direction when the operation barrel is rotated in the diopter adjusting position.

Abstract: An adjustment method includes rotating a pair of magnifying glasses in directions opposite to each other using ?-rotation, and correcting inclination of an image, caused by the ?-rotation, by rotating the pair of magnifying glasses in directions opposite to each other using the ?-rotation, given that rotation about each of axes XL and XR, which respectively correspond to visual axes of left and right eyes when an object distance is infinite in a condition of a primary position, is represented by the ?-rotation, and that rotation about each of axis YL and YR, which are respectively perpendicular to the axes XL and XR and are also perpendicular to a z-axis which perpendicularly intersects with the axis XL at a position of a deflector for the left eye and the axis XR at a position of the deflector for the right eye, is represented by the ?-rotation.

Abstract: A viewing apparatus includes a viewing optical system having a positive objective optical system and a positive eyepiece optical system, an image of an object formed through the positive objective optical system being viewed through the positive eyepiece optical system; a photographing optical system, provided independently from the viewing optical system, for photographing the object image viewed through the positive eyepiece optical system; a first focusing mechanism for changing an image focal point of the object image formed through the positive objective optical system of the viewing optical system; a second focusing mechanism for changing an image focal point of an object image formed through the photographing optical system; an association mechanism which interconnects the first focusing mechanism with the second focusing mechanism; and an indicia indication optical system for selectively indicating the object image and an indicia image in a field of view viewing through the positive eyepiece optical s

Abstract: A mounting assembly for mounting two monocular devices to form a binocular device. A method of collimating the monocular devices, so that the binocular device is collimated.

Abstract: An ocular mounting assembly for adjustably mounting a pair of ocular devices, such as telemicroscopic loupes, to an eyeglass frame or head mount with linear and rotational adjustments, but with view angle being permanently preset in accordance with working distance. The ocular mounting assembly includes an adjustable ocular support assembly and an adjustable clamp assembly rotatably attached to the ocular support assembly. The ocular mounting assembly includes a housing and two slidable mounting arms to which the ocular devices are attached, the transverse cross-sectional shape of the housing interior and mounting arms being such that substantially all of the volume of the housing interior is consumed apart from close tolerances to facilitate the sliding motion, thus resulting in a structure which cooperates to assist in providing a substantially rigid assembly.

Abstract: A mounting base which includes an object side portion, an eyepiece side portion, and a connecting portion. The connecting portion connects the side portions, and the side portions are parallel. A pair of first mounting holes are formed in the object side portion and a pair of second mounting holes are formed in the eyepiece side portion. An axis line, perpendicular to the object side portion, which goes through a geometric center of gravity of one of the first mounting holes is coaxial with an axis line, perpendicular to the eyepiece side portion, which goes through a geometric center of gravity of one of the second mounting holes. Lens barrels of the objective lenses are fixed to the first mounting holes. Eyepiece units, in which the eyepieces are held, are rotatably engaged with the second mounting holes.

Abstract: A viewing optical instrument includes an objective optical system and an eyepiece optical system such that an object image formed through the objective optical system is magnified and observed through the eyepiece optical system. The viewing optical instrument includes an eyepiece adjusting device which allows the eyepiece optical system to rotate relative to the objective optical system about a rotational axis at which an optical axis of the objective optical system intersects a focal plane formed by the objective optical system. A detector detects an inclination of a surface of a sighting object relative to a plane which is normal to the optical axis of the objective optical system, and a controller control the eyepiece optical system to rotate about the rotational axis in accordance with the inclination detected by the detector.

Abstract: An observation optical system includes, in order from an object side, an objective lens having a first lens unit of positive refractive power, a second lens unit of negative refractive power and a third lens unit of positive refractive power, an erect optical system, and an eyepiece lens of positive refractive power for observing an object image formed through the objective lens, wherein an air separation between the first lens unit and the second lens unit and an air separation between the second lens unit and the third lens unit are made variable to effect variation of magnification.

Abstract: Binocular telescopic magnifying spectacles, both telescopes of which are pivotally mounted on a common plane, wherein each imaginary pivoting axis (8) of the telescopes 91) lies outside the telescopes (1) and on the side opposite the telescopes (1) of the ocular exit pupil (9) at a distance (d) from the ocular exit pupil (9), which is smaller than the diameter of the eye (D). The adjustment device for convergence and the adjustment device for the distance are mechanically coupled.

Abstract: A binocular includes two telescope systems with parallel axes, eyepiece frames having a concave surface facing a user, adjustable eye cups with a secure locking mechanism, operation controls placed between the telescope systems, a focus adjustment mechanism, a diopter correction mechanism, and a magnifying-power-varying mechanism. The magnifying-power-varying mechanism includes rotatable cam rings and guide rings connected by a single connecting belt that moves perpendicular to the optical axes to rotate the cam rings. The connecting belt is supported and held in position so that it does not bind. The position of magnifying-power-varying lenses can be adjusted. The positions of the guide rings with respect to the telescope systems can also be adjusted.

Abstract: A binocular includes first and second rotatable bodies respectively accommodating two telescope systems, which are rotatable about two rotation axes for interpupillary adjustment. The binocular further includes a groove provided to the first rotatable body and a pin provided to the second rotatable body. The pin is in contact with the groove in such a manner that the contact member is slidable with respect to the groove. When one of the rotatable bodies is rotated, the other is also rotated due to the contact of the pin and said groove.

Abstract: A binocular including two telescope systems with parallel axes, eyepiece frames having a concave surface facing a user, adjustable eye cups with a secure locking mechanism, operation controls placed between the telescope systems, a focus adjustment mechanism, a diopter correction mechanism, and a magnifying-power-varying mechanism. The focus adjustment mechanism and diopter correction mechanism are arranged coaxially. The magnifying-power-varying mechanism includes rotatable cam rings and guide rings connected by a single connecting belt that moves perpendicular to the optical axes to rotate the cam rings. The connecting belt is supported and held in position so that it does not bind. The position of magnifying-power-varying lenses can be adjusted. During assembly, the magnifying-power-varying lenses can be mounted in the guide rings in a number of positions by rotating the lens frames holding the lenses about the optical axis and inserting sliders in linear guide grooves.

Abstract: A single eye vision device includes a head mount, a vision assist assembly mounted on the head mount for selectable positioning in front of an eye of a wearer and single lever operated positioning apparatus for positioning of the vision assist assembly on the head mount.

Abstract: Binoculars, having a body made of a cardboard or cardboard-like synthetic resin material, are convertible into a box-like form wherein a pair of objective lenses and a pair of eyepiece lenses are correspondingly positioned for use, and are foldable into a panel-like form along folds thereof when not in use and stored. The binoculars are optionally attachable to a disposable camera and may be place in a folded state while allowing use of the disposable camera.

Abstract: A binocular comprising a binocular body, one or a pair of objective lens-barrel unit or units, a pair of eyepiece lens-barrels and a pair of image-erecting chambers. A pair of parallel optical axes pass through the objective lens-barrel unit or units. The image-erecting chambers are arranged between the objective lens-barrel unit or units and the eyepiece lens-barrels. The image-erecting chambers have incorporated therein their respective prism units for optically connecting the optical axes of the objective lens-barrel unit or units to respective optical axes of the eyepiece lens-barrel units. Each of the image-erecting chambers is associated with the binocular body for angular movement relative thereto about a corresponding one of the optical axes of the objective lens-barrel unit or units in such a manner that the optical axes of the respective eyepiece lens-barrel units are movable angularly toward and away from each other respectively about the optical axes of the objective lens-barrel unit or units.

Abstract: A binocular comprising a binocular body, one or a pair of objective lens-barrel unit or units, a pair of eyepiece lens-barrels and a pair of image-erecting chambers. A pair of parallel optical axes pass through the objective lens-barrel unit or units. The image-erecting chambers are arranged between the objective lens-barrel unit or units and the eyepiece lens-barrels. The image-erecting chambers have incorporated therein their respective prism units for optically connecting the optical axes of the objective lens-barrel unit or units to respective optical axes of the eyepiece lens-barrel units. Each of the image-erecting chambers is associated with the binocular body for angular movement relative thereto about a corresponding one of the optical axes of the objective lens-barrel unit or units in such a manner that the optical axes of the respective eyepiece lens-barrel units are movable angularly toward and away from each other respectively about the optical axes of the objective lens-barrel unit or units.

Abstract: A binocular comprising a binocular body, one or a pair of objective lens-barrel unit or units, a pair of eyepiece lens-barrels and a pair of image-erecting chambers. A pair of parallel optical axes pass through the objective lens-barrel unit or units. The image-erecting chambers are arranged between the objective lens-barrel unit or units and the eyepiece lens-barrels. The image-erecting chambers have incorporated therein their respective prism units for optically connecting the optical axes of the objective lens-barrel unit or units to respective optical axes of the eyepiece lens-barrel units. Each of the image-erecting chambers is associated with the binocular body for angular movement relative thereto about a corresponding one of the optical axes of the objective lens-barrel unit or units in such a manner that the optical axes of the respective eyepiece lens-barrel units are movable angularly toward and away from each other respectively about the optical axes of the objective lens-barrel unit or units.