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公开(公告)号：US4012638A
公开(公告)日：1977-03-15
申请号：US665193
申请日：1976-03-09
摘要： Dental x-ray film is properly aligned with the x-ray beam utilizing a plurality of infrared emitters and detectors that are positioned circumferentially about the path of the x-ray beam. A reflecting surface whose plane is parallel with the plane of the x-ray film holder and integral therewith can be positioned parallel to the plurality of emitters and sensors by repositioning until the sensors receive a predetermined reflective response. Each sensor activates an indicator light seen on a display and when all the lights in a bank of lights are activated alignment is achieved. The output of the sensors can also be summed and when the sum output reaches a predetermined value an oscillator is triggered thus creating an audible tone indicating proper alignment.
摘要翻译： 利用围绕x射线束的路径周向定位的多个红外发射器和检测器，将牙科X射线胶片与X射线束正确对准。 其平面与X射线胶片保持器的平面平行并与其成一体的反射表面可以通过重新定位而平行于多个发射器和传感器定位，直到传感器接收到预定的反射响应。 每个传感器激活在显示屏上看到的指示灯，并且当灯组中的所有灯都被激活对准时被实现。 也可以将传感器的输出相加，并且当和输出达到预定值时，触发振荡器，从而产生指示适当对准的可听音。
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公开(公告)号：US5318547A
公开(公告)日：1994-06-07
申请号：US821728
申请日：1992-01-15
申请人： Bruce R. Altschuler
发明人： Bruce R. Altschuler
CPC分类号： A61M5/315 , A61M5/3271 , A61M2005/3104 , A61M5/31505
摘要： A sheathed syringe assembly including a syringe having a cylindrical body provided with a needle at one end thereof and a plunger slideably disposed within said cylindrical body for aspirating or dispensing substances into or from the cylindrical body. A sheath assembly comprised of inner and outer tubular members is attached to the cylindrical body. The inner tubular member is telescopically received in the outer member for reciprocal movement therein between a retracted position exposing said needle and an extended position covering said needle to prevent accidental needle stick. The sheath assembly is provided with a ratchet means for manually advancing said inner tubular member into the extended position with the same hand holding said syringe assembly.
摘要翻译： 一种护套的注射器组件，包括一个注射器，该注射器具有在其一端设置有针的圆柱体，以及可滑动地设置在所述圆柱体内的柱塞，用于将物质吸入或分配到圆柱体中或从圆柱体中排出物质。 由内管状构件和外管状构件组成的护套组件附接到圆筒体。 内部管状构件可伸缩地容纳在外部构件中，用于在露出所述针的缩回位置和覆盖所述针的延伸位置之间往复运动，以防止意外的针刺。 护套组件设置有棘轮装置，用于用相同的手握住所述注射器组件手动地将所述内部管状构件推进到伸出位置。
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公开(公告)号：US4070683A
公开(公告)日：1978-01-24
申请号：US663640
申请日：1976-03-04
申请人： Bruce R. Altschuler , John Taboada
发明人： Bruce R. Altschuler , John Taboada
CPC分类号： A61C9/00 , A61C9/006 , G01B11/2513 , G01C11/02
摘要： A first laser beam is reflected from the front and rear surfaces of a partially silvered glass slab generating a diverging set of interference fringes which are collimated by a positive lens. A second set of fringes is generated by a second laser beam and second partially silvered glass slab and is positioned to project through the first slab and is collimated by the same positive lens. The second pattern is aligned coaxially and mutually perpendicular to the first pattern creating a rectangular parallopiped grid pattern projected upon an observed object.
摘要翻译： 第一激光束从部分镀银玻璃板的前表面和后表面反射，产生由正透镜准直的发散的干涉条纹。 第二组条纹由第二激光束和第二部分镀银玻璃板产生，并且被定位成突出穿过第一板坯并且被相同的正透镜准直。 第二图案与第一图案同轴并且相互垂直地排列，产生投影在观察对象上的矩形的同上半边网格图案。
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公开(公告)号：US4294544A
公开(公告)日：1981-10-13
申请号：US63500
申请日：1979-08-03
CPC分类号： G01B11/2513 , G01B11/002 , G01B11/022
摘要： Three-dimensional (3-D) topographic data defining a remote surface in terms of the 3-D positions of M.times.N sample points on that surface may be obtained by (1) illuminating the scene with an array of M.times.N (simultaneous) laser beams, (2) sequencing the array of laser beams through a series of mathematical patterns (space coding) by means of a programmable electro-optic shutter, (3) recording by an imaging device the illumination reflected from the surface during the projection of each mathematical pattern, (4) analyzing the images to obtain the three-dimensional locations of each of the M.times.N illuminated points on the surface which are visible to the camera or imaging device, and (5) determining which of the laser beams in the array are not visible to the imaging device. (N and M are any positive integers consistent with the device proposed; typically M=N=128, so that M.times.N=16384 points.) Mechanization for rapid three-dimensional mapping of the surface involves an array of laser beams illuminating the surface, a programmable electro-optic shutter to switch on and off subsets of laser beams in the array and thereby to input the space code projected on the surface, a (usually narrow bandpass) video camera to capture the reflected images of the space coded surface from a given perspective (and if necessary from various other aspect angles), and a device to synchronize the electro-optic shutter with the video camera. Space coding of the light beams is used to correlate each spot seen on the surface with the corresponding beam in the laser beam array. A space code for an array of beams arranged in M rows and N columns reduces the number of images, I, necessary for correlating all light spots seen on the surface to I=l+log.sub.2 N where N is also the number of columns of the electro-optic shutter whch can be individually switched. The device achieves 3-dimensional topographic mapping much faster than laser rangefinder and optical devices because it can locate M.times.N surface points with only l+log.sub.2 n images (or patterns); it has much greater signal to noise capability than conventional light devices (it can work in daylight for a great variety of surface textures and uses non-moving, vibration-free components during data collection), and it is unambiguous in its mathematical results for all illuminated and visible surface points within its operating range.The invention differs from stereophotogrammetry by using one "active" device (the laser beam array) and one passive camera rather than two passive cameras as in conventional stereophotogrammetry. A system of several "active" devices (laser beam arrays) and several passive cameras is also comprehended if the object to be interrogated is very rough, convoluted, or has many sides.
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