Abstract: A lengthwise-direction driving frame is supported in an opening of a flange by holding members, being slidable in a lengthwise direction. The opening of the flange includes inner walls parallel to the lengthwise direction. A lateral-direction driving frame, which holds correction lenses, is supported in an opening of the lengthwise-direction driving frame, being slidable in a lateral direction. The opening of the lengthwise-direction driving frame includes inner walls parallel to the lateral direction. A tip of a shaft of a lengthwise-direction actuator abuts at all times against a pressed member which is fixed on the lengthwise-direction driving frame. A tip of a shaft of a lateral-direction actuator abuts at all times against a pressed member which is fixed on the lateral-direction driving frame. The lengthwise-direction and lateral-direction actuators are respectively fixed on the flange.

Abstract: In binoculars, a lens supporting frame which supports correction lenses, comprises a lengthwise-direction and a lateral-direction driving frames. A bar is formed on a frame mounted on an inner wall of the binoculars, being positioned approximately close to a center of the lens supporting frame. Guide holes are formed in the bar. Each guide hole is respectively positioned at a portion corresponding to an upper and a lower edge portions of the lengthwise-direction driving frame. Guide pins are respectively mounted on a center portion of the upper and the lower edge portions so as to pierce the guide holes, projecting to a side of objective lenses. When the lens supporting frame is driven in the lengthwise direction, a lengthwise-direction driving actuator pushes one of the guide pins, the lengthwise-direction driving frame being led by the guide pins in the lengthwise direction.

Abstract: An optical device comprises correction lenses for correcting a tremble of a focused image. The correction lenses are held by a lateral-direction driving frame which is held by a lengthwise-direction driving frame. The frames are respectively moved by a lengthwise-direction actuator and a lateral-direction actuator. When a power switch of the optical device is turned OFF, motors of the actuators are driven such that the driving frames are respectively moved to reset positions. Further, differences between the reset positions and moving center positions are read from an EEPROM, and the motors of the actuators are driven based on the differences, such that the frames are respectively moved to the moving center positions. Then, the motors are stopped, and a power supply to the optical device is stopped.

Abstract: An angular positional data of binoculars in a lateral irection is calculated by integrating output of a gyro sensor. A positional data of correction lenses in the lateral direction is calculated by multiplying a driving step number of a rotor of a stepping motor which drives the correction lenses in the lateral direction, by a driving amount of the lens holding frame, which holds the correction lens, according to a one step rotation of the stepping motor. A difference between the angular positional data and the positional data of the correction lenses is calculated. If the difference is within a range from a positive threshold value to a negative threshold value, an electric power supply to a driving circuit of the stepping motor is stopped. With respect to a lengthwise direction, a similar operation to that of the lateral direction is performed.

Abstract: Correction lenses are driven by a lengthwise-direction actuator in order to correct a tremble of a focused image in the lengthwise direction. A rotational motion of the lengthwise-direction actuator is transmitted to the correction lenses through a lengthwise-direction direct drive mechanism. A previous rotational direction of a motor of the lengthwise-direction actuator is memorized. It is judged that a rotational direction of the motor for correcting the tremble is the same as or the reverse of the previous rotational direction. If the rotational directions are the reverse, a driving pulse amount of the motor is adjusted such that a pulse count for canceling a play of engaging portions of the lengthwise-direction direct drive mechanism is included. With respect to correcting the tremble in the lateral direction, the same operation as described above is performed.

Abstract: Disclosed is a viewing optical instrument which includes: a first image stabilizer for stabilizing the vision in the viewing optical instrument in a first direction; a second image stabilizer for stabilizing the vision in the viewing optical instrument in a second direction perpendicular to the first direction; a first switch for manually turning the first image stabilizer ON or OFF; and a second switch, provided independently from the first switch, for manually turning the second image stabilizer ON or OFF.

Abstract: A pair of correction lenses is unitarily held by a holding plate in binoculars. The direction and the amount of the movement of the focused image occurring due to hand tremble while utilizing hand-held binoculars, are detected. The holding plate is driven in the vertical and horizontal directions, so that the direction and the magnitude of the movement of the focused image are canceled by the correction lenses.

Abstract: A binocular is provided with a pair of telescopic optical systems. Each of the pair of telescopic optical systems has an objective lens system, an erecting optical system, and an observing optical system. The erecting optical system of each of the telescopic optical systems may be a type I or type II Porro prism, which is divided into two sub prisms respectively have two reflection surfaces. First and second hand vibration compensation mechanism is provided: (a) between the objective lenses and erecting optical systems; and (b) between the first sub prisms and the second sub prisms.

Abstract: A binocular is provided with a hand-vibration compensation system. The hand-vibration compensation system includes an arm member which rotatable about a rotation axis extending in parallel with the optical axes of the pair of telescopic optical systems of the binocular. Compensation lenses for shifting images are held at the end portions of the arm. It should be noted that the rotation axis of the arm is located between the optical axes of the pair of telescopic optical systems, and more importantly, the arm is substantially equally balanced at the rotation axis thereof. The arm is driven to rotate about the rotation axis by an actuator in accordance with a hand-vibration applied to the binocular.

Abstract: Disclosed is an observation optical system such as a binocular. A telescopic optical system of the observation optical system is provided with a plurality of optical elements, which are arranged such that the observation optical system has a first optical axis horizontally extending and a second optical axis vertically extending when the binocular is held horizontally by a user. The observation optical system is further provided with first and second compensation optical systems that are movable to shift optical paths of light passed through the first and second compensation optical systems to compensate trembling of image due to hand vibration applied to the observation optical system. The compensation optical systems are constituted and arranged such that movement thereof will not be affected by the gravity.

Abstract: A binocular is provided with a pair of telescopic optical systems. Each of the pair of telescopic optical systems has an objective lens, an erecting system, a compensation lens and an observing optical system. The erecting system of each of the telescopic optical systems is divided into two sub prisms, a vertically extending optical axis is defined therebetween. The compensation lens is located between the first and second sub prisms such that it is movable in a horizontal plane by a driving mechanism. As the compensation lens moves, an optical path of light passed therethrough changes. Accordingly, by driving the compensation lens in accordance with the hand-vibration, trembling of the image can be compensated.

Abstract: Provided is a hand-vibration compensation system for compensating trembling of images due to a hand-vibration applied to a binocular having a pair of telescopic optical systems. The hand-vibration compensation system includes first and second compensation optical systems respectively provided in the pair of telescopic optical systems. The optical axes of the pair of telescopic optical systems intersect the first and second compensation optical systems, respectively. The compensation system further includes a driving system that moves at least one optical element included in each of the first and second optical systems in opposite directions within a plane perpendicular to the optical axes of the pair of telescopic optical systems.

Abstract: A binocular is provided with a pair of telescopic optical systems. Each of the pair of telescopic optical systems has an objective lens, a pair of positive and negative compensation lenses, an erecting system, and an observing optical system. The negative compensation lens of the right telescopic optical system and the positive compensation lens of the left telescopic optical system are held by a rotatable first frame. The positive compensation lens of the right telescopic optical system and the negative compensation lens of the left telescopic optical system are held by a rotatable second frame. The first and second frames are driven in the opposite directions to each other such that the vibration of the image can be compensated.

Abstract: At least one lens is held by a lens holding plate. The lens holding plate is driven along two axes, crossing at right angles, which are perpendicular to an optical axis of the lens, by direct-drive-type actuators. The direct-drive-type actuators are respectively disposed in recessed portions which are formed in the lens holding plate, such that movable portions of the direct-drive-type actuators are in slidable contact with internal surfaces of the recessed portions.

Abstract: An electronic measuring apparatus having a plurality of measuring modes. Each one of the plurality of measuring modes is selectively set to perform a corresponding operation. The electronic measuring apparatus includes a plurality of operational buttons. Information which associates one of the plurality of operational buttons with one of the plurality of measuring modes is stored in a memory. It is then distinguished which one of the plurality of operational buttons has been operated. Information stored in the memory, which associates the distinguished one of the plurality of operational buttons with the one of the plurality of measuring modes is searched and an operation unique to the one of the plurality of measuring modes which is associated with the distinguished one of the plurality of operational buttons is performed.

Abstract: A region where a load cell and a weighing hopper or a scale plate are coupled to each other is surrounded by a radio wave inhibiting member. When a weighing apparatus is used in a place subjected to extraneous radio waves of a high electric field intensity, and a high-frequency voltage is induced in the weighing hopper or the scale plate which serves as an antenna, the radio wave inhibiting member prevents a high-frequency current produced by the high-frequency voltage from flowing into the load cell. Therefore, the weighing apparatus is completely protected against any weighing errors which would otherwise result from radio interference with the load cell.