Abstract: Binoculars which include a pair of observation optical systems each having an objective optical system, an erecting optical system and an eyepiece optical system. The binoculars include a focusing mechanism that is used to move a part of the observation optical system for focusing, and a convergence value compensating mechanism that compensates for a convergence value by displacing displaceable optical elements which are at least parts of the objective optical systems, respectively, in association with actuation of the focusing mechanism. In this structure, a distance between optical axes of the eyepiece optical systems is adjustable in line with a width between eyes of a user. A maximum value of a distance between optical axes of the displaceable optical elements is smaller than a minimum value of the distance between the optical axes of the eyepiece optical systems.

Abstract: The binoculars include a pair of displaceable optical elements, which are at least parts of objective optical systems, respectively, a focusing mechanism used to move the displaceable optical elements for focusing, a pair of guide rails that guide the displaceable optical elements, respectively, when they are moved. The pair of guide rails have inclined portions, at least parts thereof, which incline with respect to the optical axes of the objective optical systems, respectively. A pair of engagement portions are formed on a pair of frames of the displaceable optical elements, respectively. The engagement portions are engaged with the guide rails, respectively. When the displaceable optical elements are moved for focusing with the pair of engagement portions being engaged with the inclined portions of the pair of guide rails, respectively, a distance between the optical axes of the pair of displaceable optical elements changes, thereby a convergence value being compensated.

Abstract: A lock mechanism for a stage apparatus includes a movable stage; a pair of engaging members provided on the movable stage; a pair of lock members positioned between the engaging members and movable along an imaginary straight line passing through the engaging members; a first link member movable along a reference straight line between the lock members; a pair of second link members rotatably mounted on the first link member and rotatably mounted on the lock members; a lock driving device which moves the lock members mutually away from each other to engage with the engaging members by moving the first link member along the reference straight line; and an unlock driving device which moves the lock members mutually toward each other so as to disengage with the engaging members by moving the first link member in the other direction along the reference straight line.

Abstract: A lock mechanism for a stage apparatus, the stage apparatus having a stationary support board and a movable stage relatively movable in a plane parallel to the stationary support board, includes a pair of engaging members projecting from the movable stage; a rotational lock device including a pair of arm members rotatably mounted and relatively rotatable between an engaged position at which facing free ends of the arm members clasp corresponding engaging members, and a disengaged position at which the facing free ends of the arm members move away from the corresponding engaging members; a lock driving device which rotates the arm members to the engaged position upon the movable stage entering a non-operational state; and an unlock driving device which rotates the arm members to the disengaged position so that the movable stage enters an operational state.

Abstract: A lock mechanism for a stage apparatus, includes a movable stage provided on a stationary member which is movable in a reference plane; a pair of engaging members which are provided on the movable stage; a pair of lock members which are positioned between the engaging members and are movable so as to move toward and away from corresponding the engaging members; a lock driving device which moves the lock members to an engaged position wherein the lock members mutually move away from each other and engage with the corresponding engaging members; and an unlock driving device which moves the lock members to a disengaged position wherein the lock members mutually move toward each other so as to disengage with the corresponding engaging members.

Abstract: When compression molding is performed continuously, lumps of molten synthetic resin (drops), which are supplied by extrusion, are continuously, accurately, and rapidly inserted into plurality of compression molding dies which are rotatingly movable. A method and device for continuously supplying drops into female moldings which are rotatingly movable for manufacturing moldings, wherein synthetic resin in molten condition extruded from an extrusion opening is cut by a cutter attached to a holding mechanism to form the molten resin into drops in a determined quantity, the drops are held and conveyed by the holding mechanism, and the drops are forcibly inserted and supplied into the concaves of the female moldings.

Abstract: There is provided binoculars which include a pair of observation optical systems each having an objective optical system, an erecting optical system and an eyepiece optical system. The binoculars include a focusing mechanism that is used to move a part of observation optical systems for focusing, a convergence value compensating mechanism that compensates for a convergence value by displacing displaceable optical elements which are at least parts of the objective optical systems, respectively, in association with actuation of the focusing mechanism, and a light shielding mechanism configured to shield light for preventing light from entering through a clearance caused in accordance with displacement of the displaceable optical elements by actuation of the convergence value compensating mechanism.

Abstract: The polar-axis telescope has an objective lens, a focal plate, an eyepiece, a zoom optical system, and a zoom optical system driver. The objective lens forms an object image, and the focal plate is arranged on a focal plane of the objective lens. The eyepiece is arranged backward of the focal plate and forms an observed image. The zoom optical system is arranged between the objective lens and the eyepiece. The zoom optical system makes the observed image appear gradually bigger while maintaining an in-focus situation. The zoom optical system driver shifts the zoom optical system along a polar-axis, corresponding to an optical axis of the polar-axis telescope, so as to change a magnification.

Abstract: Binoculars include a pair of observation optical systems each having an objective optical system, an erecting optical system and an eyepiece optical system, and a focusing mechanism that moves a part of each of observation optical systems. A convergence value compensating mechanism is provided, which operates in association with operation of the focusing mechanism, to move displaceable optical elements, which are at least a part of one of the pair of objective optical systems, to compensate for the convergence value. Corresponding optical elements of the other one of the pair of objective optical systems are not moved and does not contribute to vary the convergence value.

Abstract: There is provided binoculars which include a pair of observation optical systems each having an objective optical system, an erecting optical system and an eyepiece optical system. The binoculars include a focusing mechanism that is used to move a part of the observation optical system for focusing, and a convergence value compensating mechanism that compensates for a convergence value by displacing displaceable optical elements which are at least parts of the objective optical systems, respectively, in association with actuation of the focusing mechanism. In this structure, a distance between optical axes of the eyepiece optical systems is adjustable in line with a width between eyes of a user. A maximum value of a distance between optical axes of the displaceable optical elements is smaller than a minimum value of the distance between the optical axes of the eyepiece optical systems.

Abstract: The binoculars include a focusing mechanism and a convergence value compensating mechanism. A convergence value is compensated by turning displaceable elements which are at least parts of the objective optical systems, respectively, centering around straight lines parallel to the optical axes thereof in association with actuation of the focusing mechanism to vary a distance between the optical axes of the displaceable elements. When viewed along the optical axis direction of the objective optical systems, a condition ?<? is satisfied, where, ? represents an inclination angle of a line segment connecting the centers of the displaceable elements with the turning centers thereof, respectively, with respect to the vertical direction of the binoculars in a state where an object at infinity is focused, and ? represents an inclination angle in a state where an observation object at the shortest distance is focused.

Abstract: The binoculars include a pair of displaceable optical elements, which are at least parts of objective optical systems, respectively, a focusing mechanism used to move the displaceable optical elements for focusing, a pair of guide rails that guide the displaceable optical elements, respectively, when they are moved. The pair of guide rails have inclined portions, at least parts thereof, which incline with respect to the optical axes of the objective optical systems, respectively. A pair of engagement portions are formed on a pair of frames of the displaceable optical elements, respectively. The engagement portions are engaged with the guide rails, respectively. When the displaceable optical elements are moved for focusing with the pair of engagement portions being engaged with the inclined portions of the pair of guide rails, respectively, a distance between the optical axes of the pair of displaceable optical elements changes, thereby a convergence value being compensated.

Abstract: There is provided binoculars which include a pair of observation optical systems each having an objective optical system, an erecting optical system and an eyepiece optical system. The binoculars include a focusing mechanism that is used to move a part of observation optical systems for focusing, a convergence value compensating mechanism that compensates for a convergence value by displacing displaceable optical elements which are at least parts of the objective optical systems, respectively, in association with actuation of the focusing mechanism, and a light shielding mechanism configured to shield light for preventing light from entering through a clearance caused in accordance with displacement of the displaceable optical elements by actuation of the convergence value compensating mechanism.

Abstract: The binoculars include a focusing mechanism and a convergence value compensating mechanism. A convergence value is compensated by turning displaceable elements which are at least parts of the objective optical systems, respectively, centering around straight lines parallel to the optical axes thereof in association with actuation of the focusing mechanism to vary a distance between the optical axes of the displaceable elements. When viewed along the optical axis direction of the objective optical systems, a condition ??? is satisfied, where, ? represents an inclination angle of a line segment connecting the centers of the displaceable elements with the turning centers thereof, respectively, with respect to the vertical direction of the binoculars in a state where an object at infinity is focused, and ? represents an inclination angle in a state where an observation object at the shortest distance is focused.

Abstract: An image-erecting viewing optical system includes a first prism having an incident surface and at least two reflection surfaces, a front lens group of an objective optical system, a second prism having an incident surface and at least two reflection surfaces, a rear lens group of the objective optical system, a field stop, and an eyepiece optical system, in this order from the object. One reflection surface of the first or second prism includes a roof-mirror surface. The following conditions are satisfied: sin(????)>1/n??(1) 6°<?<16°??(2) wherein ? designates an angle between the incident surface and the first reflection surface of the first prism; ? designates a real field-of-view ? (half amount); ?? designates an angle between a light ray of a real field-of-view ? (half amount) and the optical axis within the first prism; and n designates the refractive index of the first prism.

Abstract: The polar-axis telescope has an objective lens, a focal plate, an eyepiece, a zoom optical system, and a zoom optical system driver. The objective lens forms an object image, and the focal plate is arranged on a focal plane of the objective lens. The eyepiece is arranged backward of the focal plate and forms an observed image. The zoom optical system is arranged between the objective lens and the eyepiece. The zoom optical system makes the observed image appear gradually bigger while maintaining an in-focus situation. The zoom optical system driver shifts the zoom optical system along a polar-axis, corresponding to an optical axis of the polar-axis telescope, so as to change a magnification.

Abstract: An image-erecting viewing optical system includes a first prism having an incident surface and at least two reflection surfaces, a front lens group of an objective optical system, a second prism having an incident surface and at least two reflection surfaces, a-rear lens group of the objective optical system, a field stop, and an eyepiece optical system, in this order from the object. One reflection surface of the first or second prism includes a roof-mirror surface.

Abstract: A telescope includes an erecting system having first, second, third and fourth reflecting surfaces from an object side, the first and second reflecting surfaces and the third and fourth reflecting surfaces facing each other at right angle, respectively. An objective lens located between the first and fourth reflecting surfaces has a positive refractive power to converge object light that is reflected by at least the first reflecting surface for forming an image. An eyepiece located between the fourth reflecting surface and an eye point, has a positive refractive power to magnify the image formed by the objective lens. The first reflecting surface is formed on a retractable mirror that can swing between a working position such that the first and second reflecting surfaces are perpendicular, and a retracted position such that a free end of the retractable mirror moves close to the second reflecting surface.

Abstract: The present invention is implemented in one embodiment in a tuning decoder device, such as an Integrated Receiver Decoder (IRD) of a digital satellite system. The IRD is coupled to a satellite system, the remote controller and a monitor, such as a TV set. The present invention allows a user to store up to five stations in a JUMP Loop sequence during a single viewing period by depressing a single key in a remote controller.

Abstract: A telescope or binoculars includes an erecting system having a plurality of reflecting surfaces. First and second reflecting surfaces and third and fourth reflecting surfaces respectively face each other at right angles. An intersection line between extended surfaces of the first and second reflecting surfaces is perpendicular to the intersection line between extended surfaces of the third and fourth reflecting surfaces. An objective lens is located between the second and third reflecting surfaces and converges object light that is reflected by the first and second reflecting surfaces for forming an image. An eyepiece is located between the fourth reflecting surface and an eye point to magnify the image formed by the objective lens.