Search Patents
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Patent number: 10852525Abstract: 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.Type: GrantFiled: October 3, 2018Date of Patent: December 1, 2020Assignee: KAMAKURA KOKI CO., LTD.Inventors: Toshiya Kamakura, Naomi Watanabe, Kazuki Shiraishi
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Publication number: 20140092476Abstract: An image stabilizer applicable to a monocular or binocular optical system. The stabilizer includes an erecting prism placed between an objective lens and an eyepiece to compensate for deterioration in a quality of an observed image caused by hands movement. The image stabilizer includes a gimbal suspension system having pivot shafts respectively extending to left and right sides of the optical axis of the optical system. The pivot shafts have a common pivot axis perpendicular to the optical axis. The gimbal suspension system has an erecting-prism holder supported by the pivot shafts, an angular velocity detector for detecting an angular displacement of the erecting prism, and a voice coil motor for pivoting the erecting-prism holder.Type: ApplicationFiled: September 30, 2013Publication date: April 3, 2014Applicants: Al Systems, Ltd., Kamakura Koki Co., Ltd.Inventors: Kunio ANDO, Masashi KATO, Haruo ITOH
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Patent number: 9529208Abstract: An image stabilizer applicable to a monocular or binocular optical system. The stabilizer includes an erecting prism placed between an objective lens and an eyepiece to compensate for deterioration in a quality of an observed image caused by hands movement. The image stabilizer includes a gimbal suspension system having pivot shafts respectively extending to left and right sides of the optical axis of the optical system. The pivot shafts have a common pivot axis perpendicular to the optical axis. The gimbal suspension system has an erecting-prism holder supported by the pivot shafts, an angular velocity detector for detecting an angular displacement of the erecting prism, and a voice coil motor for pivoting the erecting-prism holder.Type: GrantFiled: September 30, 2013Date of Patent: December 27, 2016Assignees: KAMAKURA KOKI CO., LTD., AI SYSTEMS, LTD.Inventors: Kunio Ando, Masashi Kato, Haruo Itoh
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Publication number: 20150219920Abstract: An image stabilizing device and system for a binocular telescope having a pair of telescopic optical systems each comprising an objective lens, a gimbal mounted erecting prism and an eyepiece lens which is capable of compensating for deterioration in quality of an observed image due to user hand shake or other external vibrations.Type: ApplicationFiled: January 27, 2015Publication date: August 6, 2015Applicant: KAMAKURA KOKI CO., LTD.Inventors: Kunio ANDO, Masashi KATO, Haruo ITOH, Kazuya MIYAJI
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Patent number: 5028123Abstract: The present invention relates to a focal-length adjusting assembly for a pair of binoculars which adjusts the eyepieces relative to the optics and which can hold the adjusting screw or rod in a click-stopped position which automatically positions the eyepieces in a position for viewing an object at an infinite distance.Type: GrantFiled: June 30, 1989Date of Patent: July 2, 1991Assignee: Kamakura Koki Co., Ltd.Inventors: Naomi Watanabe, Akihiro Shimofuruta
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Patent number: 9417458Abstract: An image stabilizing device and system for a binocular telescope having a pair of telescopic optical systems each comprising an objective lens, a gimbal mounted erecting prism and an eyepiece lens which is capable of compensating for deterioration in quality of an observed image due to user hand shake or other external vibrations.Type: GrantFiled: January 27, 2015Date of Patent: August 16, 2016Assignee: KAMAKURA KOKI CO., LTD.Inventors: Kunio Ando, Masashi Kato, Haruo Itoh, Kazuya Miyaji
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Patent number: 10375322Abstract: An optical observation device for observing a target located at a distant observation sight that comprises an observation telescope and an infrared sighting device. The infrared sighting device eventually provides a visual target image as a sighting marker from a thermal infrared image of the observation sight. The sighting marker and the observation sight are simultaneously viewed in the field of view of the observation telescope so as to enable training of the observation telescope on a part of the observation sight where the target is located.Type: GrantFiled: January 25, 2018Date of Patent: August 6, 2019Assignee: KAMAKURA KOKI CO., LTD.Inventors: Kunio Ando, Kazuya Miyaji
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Patent number: 6903811Abstract: The range binoculars include first and second observing optical systems, a laser beam-emitter for emitting a laser beam, a measuring optical system for collimating the laser beam and sending the collimated laser beam to a target. A laser beam-receiving device receives the laser beam reflected by the target, while a distance-determining device determines the distance between the observation place and the target from the flight time of the laser beam taken from the laser beam-emitter to the laser beam-receiver. A measurement-displaying device displays the measurements obtained by the distance-determining device.Type: GrantFiled: August 11, 2003Date of Patent: June 7, 2005Assignee: Kamakura Koki Co., Ltd.Inventor: Naomi Watanabe
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Patent number: 11536982Abstract: An anti-vibration optical device includes an objective lens group provided on one side of a housing, an eyepiece group provided on another side of the housing, an image blur corrector housed into the housing to be located between the objective lens group and the eyepiece group and including an erecting prism, a gimbal mechanism rotatably supporting the erecting prism and an actuator for rotating the erecting prism via the gimbal mechanism, a first angular velocity detection sensor configured to detect a first angular velocity, which is an angular velocity of the housing, a second angular velocity detection sensor configured to detect a second angular velocity, which is an angular velocity of the erecting prism, and a controller configured to control the actuator on the basis of the first angular velocity and the second angular velocity.Type: GrantFiled: December 11, 2020Date of Patent: December 27, 2022Assignee: KAMAKURA KOKI CO., LTD.Inventors: Haruo Itoh, Kazuya Miyaji
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Publication number: 20140320962Abstract: An optical image stabilizer for a telescopic instrument having an objective lens, an erect prism, and an eyepiece lens arranged in this order which is capable of compensating for image deteriorations of an observed image due to external vibrations. The optical image stabilizer has a gimbal device mounted on a telescope housing, an external gimbal frame rotatably mounted on the gimbal casing, and an internal gimbal frame with the erect prism fixed thereto. Voice coil motors are provided for rotating the external and the internal gimbal frames. One of the voice coil motors has a coil disposed on the circuit board and a permanent magnet disposed on either one of the external and the internal gimbal frames oppositely to the coil. The remaining voice coil motor has a coil disposed on the circuit board and a permanent magnet disposed on the other gimbal frame oppositely to the coil.Type: ApplicationFiled: April 22, 2014Publication date: October 30, 2014Applicant: KAMAKURA KOKI CO., LTD.Inventors: Kunio ANDO, Masashi KATO, Haruo ITOH, Kazuya MIYAJI
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Patent number: 9395551Abstract: An optical image stabilizer for a telescopic instrument having an objective lens, an erect prism, and an eyepiece lens arranged in this order which is capable of compensating for image deteriorations of an observed image due to external vibrations. The optical image stabilizer has a gimbal device mounted on a telescope housing, an external gimbal frame rotatably mounted on the gimbal casing, and an internal gimbal frame with the erect prism fixed thereto. Voice coil motors are provided for rotating the external and the internal gimbal frames. One of the voice coil motors has a coil disposed on the circuit board and a permanent magnet disposed on either one of the external and the internal gimbal frames oppositely to the coil. The remaining voice coil motor has a coil disposed on the circuit board and a permanent magnet disposed on the other gimbal frame oppositely to the coil.Type: GrantFiled: April 22, 2014Date of Patent: July 19, 2016Assignee: KAMAKURA KOKI CO., LTD.Inventors: Kunio Ando, Masashi Kato, Haruo Itoh, Kazuya Miyaji
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Patent number: 7372637Abstract: A focusing mechanism allowing a user to adjust the focus from infinity to a close distance rapidly and precisely, and an optical device utilizing such a focusing mechanism. The focusing unit includes an optical member movable along an optical axis of an optical system, a screw body put into rotation via the rotation of an operation member, a nut body meshing with the screw body and including a cam follower, a cam follower restricting means including a rotation restricting portion for restricting the cam follower from rotating or revolving about a rotation or revolution axis of the operation member, and a rotation restriction releasing portion for releasing the restriction which prevents the rotation or revolution of the cam follower about the rotation or revolution axis of the operation member, and an optical member moving means for moving the optical member along the optical axis via the movement of the nut body along its rotation axis.Type: GrantFiled: December 29, 2006Date of Patent: May 13, 2008Assignee: Kamakura Koki Co., Ltd.Inventor: Kazuya Miyaji
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Patent number: 6870669Abstract: A pair of variable-powered binoculars include a pair of objective lens systems; a pair of prism systems, each of the prism system inverting an image that advances through the corresponding objective lens systems, from an inverted image to an erecting image; a pair of concave adjusting lenses, each of the concave adjusting lenses placed between a focus formed by the corresponding objective lens system and the corresponding prism system, so that each of the concave adjusting lenses is movable along the optical axis formed by the corresponding objective lens system and the corresponding prism system; and a pair of ocular lens systems, each of the ocular lens systems placed on the optical axis, so that each ocular lens system is movable along the optical axis closer to or away from the corresponding concave adjusting lens, synchronizing with a movement of the corresponding concave adjusting lens.Type: GrantFiled: September 22, 2003Date of Patent: March 22, 2005Assignee: Kamakura Koki Co., Ltd.Inventor: Naomi Watanabe
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Patent number: 7006285Abstract: Disclosed is a pair of range binoculars that, when the pupil distance is adjusted, is free from a deviation of the optical axes and undesirable influences on the electronic parts resulting from vibration caused by the adjustment, is capable to show the measured distance in such a way as the user can see it easily without making the system complicated, and secures the brightness of the visual field where the measured distance is displayed. The range binoculars are characterized in that a main case and an attached case contain a pair of left and right observation optical systems and the pupil distance is adjusted by turning only the attached case, and that the main case accommodates laser range-finding means, and measured distance displaying means comprising LCD means for displaying a distance measured by said laser range-finding means and a displaying optical system for projecting the distance displayed by said LCD means on the reticle so that the distance is shown at a rim of the visual field.Type: GrantFiled: July 6, 2001Date of Patent: February 28, 2006Assignee: Kamakura Koki Co., Ltd.Inventor: Naomi Watanabe
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Patent number: 8379306Abstract: The invention relates to improving optical properties of optical instruments with variable magnification, such as zoom binoculars, reducing the weight thereof, and enabling the user to change magnifications quickly. The invention provides an optical instrument with a focal length-varying lens 4 disposed on the optical axis between an objective lens 7 and an eyepiece 3, further having an adjusting lens 5 for adjusting optical properties when the focal length-varying lens is in an area to provide high magnification. The adjusting lens is supported so that it is capable of moving between a location on the optical axis and a location off the path of light beams. Interlocked with a magnification-varying mechanism that controls the position of the focal length-varying lens, the adjusting lens is moved to the on-the-axis location when the focal length-varying lens is in an area to provide high magnification, and to the off-the-axis location when low magnification.Type: GrantFiled: September 9, 2009Date of Patent: February 19, 2013Assignee: Kamakura Koki Co., Ltd.Inventors: Naomi Watanabe, Kazuya Miyaji
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Publication number: 20100073774Abstract: The invention relates to improving optical properties of optical instruments with variable magnification, such as zoom binoculars, reducing the weight thereof, and enabling the user to change magnifications quickly. The invention provides an optical instrument with a focal length-varying lens 4 disposed on the optical axis between an objective lens 7 and an eyepiece 3, further having an adjusting lens 5 for adjusting optical properties when the focal length-varying lens is in an area to provide high magnification. The adjusting lens is supported so that it is capable of moving between a location on the optical axis and a location off the path of light beams. Interlocked with a magnification-varying mechanism that controls the position of the focal length-varying lens, the adjusting lens is moved to the on-the-axis location when the focal length-varying lens is in an area to provide high magnification, and to the off-the-axis location when low magnification.Type: ApplicationFiled: September 9, 2009Publication date: March 25, 2010Applicant: KAMAKURA KOKI CO., LTDInventors: Naomi WATANABE, Kazuya MIYAJI
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Patent number: 7251073Abstract: The invention aims at providing a pair of binoculars making it possible to easily perform a focusing operation and a diopter adjustment, and efficiently perform an assembling operation. The present invention provides a pair of binoculars having a pair of supporters for supporting adjustment lenses provided between a pair of ocular optical systems and a pair of objective optical systems so as to be capable of moving forward and backward along the optical axis, a focusing gear for performing a focusing operation by moving said pair of supporters forward or backward at the same time in the direction of optical axis, a diopter adjuster for performing a diopter adjustment by moving one supporter forward or backward in the direction of optical axis as keeping the other supporter stationary, and a focusing and diopter adjusting unit having a changeover gear for changing over the focusing gear and the diopter adjuster to each other.Type: GrantFiled: October 29, 2004Date of Patent: July 31, 2007Assignee: Kamakura Koki Co., Ltd.Inventors: Masashi Kato, Hiroaki Ishigaki
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Publication number: 20100265490Abstract: This invention provides range binoculars capable of measuring a distance between the observation place and an object, the binoculars being made small-sized with keeping the functions as binoculars.Type: ApplicationFiled: April 16, 2009Publication date: October 21, 2010Applicant: KAMAKURA KOKI CO., LTDInventor: Naomi WATANABE
