Interpupillary distance adjusting mechanism for use in binocular telescope
First Claim
1. An interpupillary distance adjusting mechanism for use in a binocular telescope having a pair of lens-barrels having their optical axes disposed in parallel with each other, comprising:
- guide shaft means for guiding the pair of lens-barrels to slide along a path transverse to said optical axes selective to move the pair of lens-barrels or apart closer together;
pushing means for exerting pushing forces on the pair of lens-barrels from directions of axes of the guide shaft means; and
interpupillary distance adjusting means for converting a part of the pushing force acting on the pair of lens-barrels into a force component acting in a direction in which each of the pair of lens-barrels is pushed against the guide shaft means, while moving each of the pair of lens-barrels in directions, in which the pair of lens-barrels move away from or nearer to each other, by simultaneously pushing each of the pair of lens-barrels against the guide shaft means.
1 Assignment
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Accused Products
Abstract
An interpupillary distance adjusting mechanism for use in a binocular telescope, having a pair of lens-barrels which contain lens optical systems, respectively, and are placed in parallel with each other. The interpupillary distance adjusting mechanism further has first and second guide shafts, which slidably guide the pair of lens-barrels in a direction substantially perpendicular to the direction of the optical axes of the lens optical systems, interpupillary distance adjusting springs for pushing the pair of lens-barrels in a sliding direction, and an interpupillary distance adjusting cam which can adjust an interpupillary distance by sliding the pair of lens-barrels along the guide shafts as the result of undergoing a pushing force from the interpupillary distance adjusting spring, of converting a part of the pushing force in a direction which intersects the sliding direction, and of moving the pair of lens-barrels by pushing the pair of lens-barrels against the first guide.
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Citations
38 Claims
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1. An interpupillary distance adjusting mechanism for use in a binocular telescope having a pair of lens-barrels having their optical axes disposed in parallel with each other, comprising:
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guide shaft means for guiding the pair of lens-barrels to slide along a path transverse to said optical axes selective to move the pair of lens-barrels or apart closer together; pushing means for exerting pushing forces on the pair of lens-barrels from directions of axes of the guide shaft means; and interpupillary distance adjusting means for converting a part of the pushing force acting on the pair of lens-barrels into a force component acting in a direction in which each of the pair of lens-barrels is pushed against the guide shaft means, while moving each of the pair of lens-barrels in directions, in which the pair of lens-barrels move away from or nearer to each other, by simultaneously pushing each of the pair of lens-barrels against the guide shaft means. - View Dependent Claims (2, 3, 4, 5)
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6. An interpupillary distance adjusting mechanism for use in a binocular telescope having a pair of lens-barrels disposed in parallel with each other, comprising:
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guide shaft means for guiding the pair of lens-barrels to slide in directions in which the pair of lens-barrels move away from or nearer to each other; pushing means provided on an axis of the guide shaft means for exerting pushing forces urging said pair of lens barrels toward one another; and interpupillary distance adjusting means for converting a part of the pushing forces acting on the pair of lens-barrels into a force component acting in a direction in which each of the pair of lens-barrels is pushed against the guide shaft means, while moving each of the pair of lens-barrels in a direction, in which the pair of lens-barrels move away from or nearer to each other, by simultaneously pushing each of the pair of lens-barrels against the guide shaft means. - View Dependent Claims (7, 8)
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9. A binocular telescope comprising:
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a first lens-barrel containing a first optical system;
a second lens-barrel containing a second optical system disposed in such a manner that an optical axis of the second optical system is parallel to an optical axis of the first optical system;supporting means, aligned in a direction substantially perpendicular to the optical axes of the first and second optical systems, for guiding the first and second lens-barrels in such a manner as to be able to slide in directions in which the first and second lens-barrels move away from or nearer to each other; a first pushing means provided in the supporting means, normally urging the first lens-barrel toward the second lens-barrel; a second pushing means, provided in the supporting means, for normally urging the second lens-barrel toward the first lens-barrel; and an interpupillary distance adjusting member rotatably mounted on the body of the binocular telescope, the interpupillary distance adjusting member having a pair of cam means, each of which undergo pushing forces exerted from the first and second pushing means through the first and second lens-barrels, respectively, the interpupillary distance adjusting member converting a part of the pushing forces into force components which push the first and second lens-barrels against the supporting means, while the lens-barrels are moved, by the adjustment member, in directions, in which the lens-barrels move away from or nearer to each other, by being pushed against the supporting means. - View Dependent Claims (10, 11)
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12. A binocular telescope comprising:
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a pair of lens-barrels disposed in parallel with each other, which contain lens optical systems, respectively; a guide member for guiding the pair of lens-barrels to slide along a path substantially perpendicular to optical axes of the lens optical systems; a pushing member for normally urging the pair of lens-barrels toward one another; an adjusting member slidably engaging the lens barrels for adjusting a separation distance between the pair of lens-barrels by moving the pair of lens-barrels apart against a force exerted by the pushing means, said adjusting member converting a part of the pushing force into a force component acting in a direction transverse to the sliding direction to aid in maintaining parallel alignment of the lens barrels, said force component maintaining the pair of lens-barrels in sliding contact with the guide member. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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13. A binocular telescope comprising:
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first and second lens-barrels disposed in parallel with each other, which contain lens optical systems, respectively; a guide member for guiding the first lens barrel to slide in a direction which intersects substantially perpendicularly to directions of optical axes of the lens optical systems; a pushing member for pushing the first lens barrel in the sliding direction toward the second lens barrel; an adjusting member slidably engaging the first and second lens barrels for adjusting a distance between the first and second lens barrels by urging the first lens barrel along the guide member against a pushing force exerted by the pushing means through the first lens barrel, said adjusting member converting the pushing force into a force component acting in a direction intersecting the sliding direction of the first lens barrel, whereby first lens barrel is pushed against the guide member by said force component as the first lens barrel is moved.
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23. A binocular telescope comprising:
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a pair of lens-barrels, through which an object is observed, the pair of lens-barrels respectively having optical axes parallel to each other; a guide shaft aligned perpendicular to the two optical axes, the pair of lens-barrels being guided along the guide shaft; a pushing member, provided on the guide shaft, exerting a force for pushing the pair of lens-barrels in directions in which the pair of lens-barrel move nearer to each other; and an interpupillary distance adjusting member engaging said lens barrels for adjusting a distance at which the pair of lens-barrels are spaced apart from each other against the force of the pushing member acting on said lens barrels. - View Dependent Claims (24, 25, 26)
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27. A binocular telescope comprising:
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a pair of observation optical systems, through which an object is observed, the pair of observation optical systems respectively having optical axes parallel to each other; guide means aligned perpendicular to the two optical axes, the pair of observation optical systems being guided along the guide means; pushing means, provided on the guide means, provide forces for pushing the pair of observation optical systems in directions in which the pair of observation optical systems move nearer to each other; and interpupillary distance adjusting means engaging the observation optical systems for adjusting a distance at which the pair of observation optical systems are spaced apart from each other against the forces of the pushing means acting on the optical systems. - View Dependent Claims (28, 29, 30)
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31. A binocular telescope comprising:
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a pair of lens barrels respectively containing a pair of observation optical systems, the pair of observation optical systems respectively having a pair of optical axes parallel to each other; guide means for guiding the pair of lens barrels in a direction substantially perpendicular to the pair of optical axes; pushing means exerting forces for pushing the pair of lens barrels toward one another along the guide means; and adjusting means engaging the lens barrels for adjusting a distance between the pair of optical axes, the adjusting means converting a pushing force of the pushing means into a force component exerted in a predetermined direction intersecting the guiding direction and pushing the pair of lens barrels against the guide means in a plane parallel to a plane containing the pair of optical axes. - View Dependent Claims (32, 33, 34, 35, 36)
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37. A binocular telescope comprising:
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a pair of observation optical systems, through which an object is observed, the pair of observation optical systems respectively having optical axes parallel to each other; guide means containing a single guide shaft, the optical axes of the pair of observation optical systems being maintained in parallel with each other by the single guide shaft, the pair of observation lens systems being guided along the guide means; interpupillary distance adjusting means for adjusting relative positions of the pair of observation optical systems; driven means provided on said pair of observation optical systems at positions near said guide shaft, the driven means engaging the adjusting means and being moved by the interpupillary distance adjusting means; pushing means, provided along the guide shaft, for holding the relative positions of the pair of the observation optical systems and for maintaining the interpupillary distance adjusting means in abutting engagement with the driven means, whereby the interpupillary distance adjusting means adjusts a relative distance between the pair of observation optical systems against a force exerted by the pushing means upon the observation optical systems.
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38. An interpupillary distance adjusting mechanism for use in a binocular telescope, comprising:
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a pair of lens-barrels, through which an object is observed, the pair of lens-barrels respectively having a pair of optical axes parallel to each other; guide means for guiding the pair of lens-barrels in a direction perpendicular to the pair of optical axes; pushing means, disposed in a vicinity of the guide means, exerting a force for pushing the pair of lens-barrels along the guide means in directions in which the pair of lens-barrels are made to move nearer to each other; and cam means engaging the lens barrels for adjusting an interpupillary distance by spacing the pair of lens-barrels apart from each other against the pushing force of the pushing means, wherein a change in the deformation of the pair of lens-barrels due to a variation in pushing force of the pushing means, which is caused by adjusting the interpupillary distance by means of the cam means, is substantially negligible.
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Specification