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In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
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| Number | Title | Issue Date |
| 5054926 | Distance measuring device An electro-optic distance or profile measuring device focusses an energy beam into a line (4) which intersects a surface (5) under examination at at least one point. The energy scattered by the surface (5) is imaged onto a detector (6) whereby analysis of... | 10/08/1991 |
| 5052338 | Apparatus for dispensing viscous materials a constant height above a workpiece surface A syringe or other suitable dispensing device is coupled to conventional controls for dispensing viscous material such as adhesives or solder paste through a tip thereof. The syringe is supported on a motor driven carriage for movement along a Z axis in r... | 10/01/1991 |
| 5017796 | Moving blade tip clearance measurement apparatus and method with moveable lens A laser-optical apparatus for measuring blade tip clearance, e.g. of a compressor or gas turbine, uses a laser beam, fiber optics, a light probe and electrical circuits (14, 25) for processing data from the probe, and includes a light probe (16) having a ... | 05/21/1991 |
| 4976543 | Method and apparatus for optical distance measurement A bundled light beam projected by a light source (21), particularly a laser light source, onto the target is partly reflected back into the measuring apparatus (20), focussed by a concave mirror (61, 81) and split by a beam splitter (26) into two partial ... | 12/11/1990 |
| 4944922 | Quantitative dispenser for a liquid A quantitative dispenser for a liquid includes a pipette having a downwardly directed nozzle which serves to pick up and deliver a predetermined quantity of a liquid and a mechanism for moving the pipette downwardly to dip the lower end of the pipette int... | 07/31/1990 |
| 4902135 | Object movement measuring apparatus In an object movement measuring apparatus, a movement monitor detects the movement of an object under measurement to output a signal in synchronization with the movement, and the signal thus outputted is utilized to trigger the streak camera, so that the ... | 02/20/1990 |
| 4884888 | Method and device for contactless optical measurement of distance changes A method and device for contactless optical measurement of distance changes, in which two light beams (5, 6) are directed from a measuring table (1) through an optical system (9) in such a manner that they intersect on the surface of the object (11) and i... | 12/05/1989 |
| 4874246 | Arrangement for optically measuring a distance between a surface and a reference plane An optical distance or profile meter in which radiation reflected from a surface (630) is projected onto a radiation-sensitive dectection system via an optical system (641, 642) comprises a radiation-blocking plate (250) formed with radiation windows (651... | 10/17/1989 |
| 4844617 | Confocal measuring microscope with automatic focusing A confocal measuring microscope including a spectrometer and autofocus system sharing common optical elements in which the intensity of light entering the spectrometer from a particular spot on a workpiece is used to determine a focus condition for the sa... | 07/04/1989 |
| 4830498 | Position detecting device A position detecting device for detecting the position of an object includes an illumination optical system for producing a light beam and for irradiating the object with the light beam, an optical system for focusing the light beam, a focus position cont... | 05/16/1989 |
| 4828390 | Optical axis displacement sensor A first convex lens, having a focal length f1 and a second convex lens, having a focal length f2, are arranged at an interval d (=f1+f2). A mirror is provided, on the optical axis, to reflect the laser beam from a laser thereby emitting parallel beams, th... | 05/09/1989 |
| 4801794 | Data detection and optical focus error detection system for rotating optical media A magneto-optic optical disc system which uses the magneto-optic differential data detection channel, with addition only a low pass filter, to also detect focus error. The differential data detection channel includes a pair of photodetectors, the first ph... | 01/31/1989 |
| 4788859 | Method and apparatus for determining deflection in pavement A method for direct measurement of the vertical displacement of a point on the surface of pavement upon application of a load thereto is disclosed. This method measures the vertical displacement through the use of optical equipment. Specifically, the disp... | 12/06/1988 |
| 4778988 | Displacement detection Apparatus for determining displacement of an object comprises a light source (1) for propagating polychromatic light along a path to a detector (7). Radiation modulation means such as a filter (5) is provided in predetermined fixed location with respect t... | 10/18/1988 |
| 4767211 | Apparatus for and method of measuring boundary surface An apparatus for and a method of measuring a boundary surface of a sample are disclosed in which a ratio of the light quantity of a part of reflected light from a sample which travels in the vicinity of the optical axis of the reflected light, to the ligh... | 08/30/1988 |
| 4767934 | Active ranging system A surface position sensor in which energy is directed along an axis to the surface, is reflected back along the axis, and is focused on an elongated detector at a position along its length indicative of the distance to the surface.... | 08/30/1988 |
| 4765742 | Optical monitoring method and apparatus Monitor signals are produced which are qualitative or quantitative measures of the shape, size or position of a light spot on an optical head relative to fibre-optic receptors in the optical head. One pair or two pairs of receptors may be used. Production... | 08/23/1988 |
| 4750835 | Method of and device for measuring dimensions The method for measuring dimensions of a workpiece (15) in a coordinate measuring machine having an optical probe (14) arranged to output radiation in a direction (21A) at an angle to a surface (15A) to be measured. The probe has a housing (17) which is a... | 06/14/1988 |
| 4725722 | Automatic focusing method and apparatus utilizing contrasts of projected pattern A method of auto-focusing suitable for fine patterns of LSIs and an apparatus therefor, particularly applied for checking the geometry of a circuit pattern of a semiconductor device formed on an LSI wafer. A stripe pattern is projected on a specified loca... | 02/16/1988 |
| 4711577 | Optical configuration of fiber optic sensor for symmetric dynamic response about the optical null A method of determining the displacement of a fiber optic sensor from a target in which a first lens is spaced from the target at a first distance an a second lens is spaced from said target at a second distance which provides the greatest intensity respo... | 12/08/1987 |
| 4711578 | Optical displacement sensors An optical displacement sensor comprises a light source 2 coupled to an optical fiber 1 the end 5 of which is directed onto a reflector 3 the displacement of which is to be measured. A lens 4 of appropriate focal length is positioned between the end of th... | 12/08/1987 |
| 4701610 | Fiber optic proximity sensors for narrow targets with reflectivity compensation An optical proximity detector including a set of transmitter fibers for directing light to a target and two sets of receiver fibers. One set of receiver fibers is combined with the transmitter fibers to from a central portion which is flanked by the secon... | 10/20/1987 |
| 4674882 | Precision optical displacement measuring instrument using servo controlled fiber optic sensor A displacement measuring instrument for measuring the displacement of a target including in combination a fiber optic lens assembly including means for maintaining said assembly in space relation with said target, dither means for vibrating said assembly ... | 06/23/1987 |
| 4666304 | Optical measurement apparatus Optical measurement apparatus, for example for the measurement of displacement, comprises a radiation source 2 coupled to an optical fibre 1 connected to a sensing head 12 comprising a Y-coupler 8 supplying an optic fibre tip 5 and a parallel path incorpo... | 05/19/1987 |
| 4647193 | Optical target ranging apparatus The range of a target is determined by imaging an illuminated spot on the target onto a detector surface by a focusing lens. The detector is positioned away from the focal point of the image of the illuminated spot, so that the image appears as a blurred ... | 03/03/1987 |
| 4630927 | Optical projector An invention is disclosed for optically determining the position of an object in space, using a single lens for triangulation, wherein an indexing light beam is projected to a lens on one side nonparallel to the optical axis of the lens. The lens focuses ... | 12/23/1986 |
| 4585349 | Method of and apparatus for determining the position of a device relative to a reference A method of and an apparatus for determining the location or position of a surface element with respect to a reference which utilizes polychromatic light and with a holographic lens on the light focuses individual wavelengths thereof to respective focal p... | 04/29/1986 |
| 4488813 | Reflectivity compensating system for fiber optic sensor employing dual probes at a fixed gap differential This invention provides for the use of two similar fiber optic probes set at a fixed position differential relative to each other in order that a calibration correction signal can be obtained which may be used to create a common output signal having a gap... | 12/18/1984 |
| 4484854 | Robotic height sensor in laterally compliant probe A robotic height sensor employs the defocussing of a spot of light to detect the motion of a probe contacting a reference object. The defocussing changes the electrical output of a photodetector which output is used to control a height drive mechanism. In... | 11/27/1984 |
| 4472055 | Method and apparatus for detecting the focusing position in a laser machining apparatus This invention relates to a method and device for detecting the focusing position in a laser processing apparatus, such as a machine for cutting plate-shaped workpieces by laser beams. The method includes the steps of placing a light shielding member and a ... | 09/18/1984 |
| 4071297 | Method and apparatus for photoelectrically determining the position of at least one image focus plane A system for determining photoelectrically the position of at least one focus plane of an image within an optical apparatus, wherein the object is reproduced at least at one spatial frequency filter of an optical image correlator and there is measurement ... | 01/31/1978 |
| 4037958 | Apparatus for determining photoelectrically the position of at least one focusing plane of an image Apparatus for the photoelectrical determination of the position of at least one focusing plane of an image comprising an imaging optics, at least one spatial frequency filter in the form of a structure or grating mounted in the vicinity of one image plane... | 07/26/1977 |
