摘要:
An optical device for establishing a spatial orientation for a drill bit includes at least three light sources and two cameras. The first light source is used to silhouette the drill bit; a second light source is used to generate a reflection from a primary facet of the drill bit; and a third light source is used to generate a reflection from the margin of the drill bit. In sequence, the first camera responds to the first light source to establish an axial position for the drill bit on the axis. The second camera then responds to the second light source to establish a gross rotational position for the drill bit on its axis. Finally, the first camera is again used. This time it establishes a precise rotational position for the drill bit on its axis to establish the spatial orientation for the drill bit.
摘要:
An ophthalmic lens inspection system includes an illumination assembly which generates diffuse light and transmits the diffuse light through an ophthalmic lens disposed in an inspection position, the diffuse light having a diffusivity of between 30.degree. and 50.degree.. An imaging assembly generates a set of signals representing selected portions of the diffuse light transmitted through the ophthalmic lens in the inspection position. A moving mechanism supports the imaging and illumination assemblies for common movement relative to the contact lens, to bring a reference point into alignment with the center of the imaging assembly.
摘要:
An ophthalmic lens inspection system includes an illumination assembly which generates diffuse light and transmits the diffuse light through an ophthalmic lens disposed in an inspection position, the diffuse light having a diffusivity of between 30.degree. and 50.degree.. An imaging assembly generates a set of signals representing selected portions of the diffuse light transmitted through the ophthalmic lens in the inspection position. A moving mechanism supports the imaging and illumination assemblies for common movement relative to the contact lens, to bring a reference point into alignment with the center of the imaging assembly.
摘要:
A system for analyzing smoke has a plurality of units, wherein each unit includes an optical emitter for alternately directing horizontally and vertically polarized light along a beam path, and into a smoke cloud, to generate scattered light. A horizontally polarized detector and a vertically polarized detector are positioned at different locations, but at a same distance and scattering angle relative to the beam path. Each unit has a different wavelength. A computer receives signals from the detectors of all units, in response to each emitter, for analysis of the smoke.
摘要:
A device is disclosed for extracting dissolved gases from oil in an electrical transformer and for analyzing those gases using a plurality of gas sensors, a signal processor, and a neural network.
摘要:
A disposable arthroscope for examining the interior of a joint and for carrying out diagnostic and therapeutic procedures within the joint includes an elongated needle and a cap housing which has a base plate. The proximal end of the needle is mounted on the cap opposite the base plate, and the distal end of the needle extends outwardly from the cap. The needle is a hollow tube which surrounds an image guide and a bundle of illuminating fibers that extend through the tube. A lens is attached to the distal end of the image guide and is slightly angled relative to the longitudinal axis of the needle. The proximal ends of both the image guide and the bundle of illuminating fibers extend from the proximal end of the tube and through the cap for exposure at the surface of the base plate. The base plate of the disposable arthroscope is engageable with a camera and with a light source to position the camera in light communication with the image guide, and to position the light source in light communication with the bundle. With these engagements, the combination of disposable arthroscope, light source and camera generate a visual display of an object that is illuminated by the light source through the bundle of illuminating fibers.
摘要:
A disposable arthroscope for examining the interior of a joint and for carrying out diagnostic and therapeutic procedures within the joint includes an elongated needle and a cap housing which has a base plate. The proximal end of the needle is mounted on the cap opposite the base plate, and the distal end of the needle extends outwardly from the cap. The needle is a hollow tube which surrounds an image guide and a bundle of illuminating fibers that extend through the tube. A lens is attached to the distal end of the image guide and is slightly angled relative to the longitudinal axis of the needle. The proximal ends of both the image guide and the bundle of illuminating fibers extend from the proximal end of the tube and through the cap for exposure at the surface of the base plate. The base plate of the disposable arthroscope is engageable with a camera and with a light source to position the camera in light communication with the image guide, and to position the light source in light communication with the bundle. With these engagements, the combination of disposable arthroscope, light source and camera generate a visual display of an object that is illuminated by the light source through the bundle of illuminating fibers.
摘要:
A system for analyzing smoke has a plurality of units, wherein each unit includes an optical emitter for alternately directing horizontally and vertically polarized light along a beam path, and into a smoke cloud, to generate scattered light. A horizontally polarized detector and a vertically polarized detector are positioned at different locations, but at a same distance and scattering angle relative to the beam path. Each unit has a different wavelength. A computer receives signals from the detectors of all units, in response to each emitter, for analysis of the smoke.
摘要:
A dual wavelength fiber optic monitoring system utilizes the principle of conservation of throughput to permit the use of a plurality of transducers illuminated by a single source unit. Redundancy is provided by using a plurality of sources and detector units and by the use of optical couplers to transmit the light beams between these elements.
摘要:
An optical fiber security system includes an optical emitter connected to one end of an optical fiber and a detector connected to the other end. A random signal generator triggers the emitter to output a light pulse signal through the fiber. This generator also simultaneously triggers the detector to receive the light pulse signal. A comparator compares the light pulse signal that is received by the detector with an optimum reference to adjust and conform the emitter output with the reference. Also, a monitor determines whether a particular identifiable characteristic of the light pulse signal is within a predetermined range of values. Whenever there is not a simultaneous emission and detection of the light pulse signal, or whenever the light pulse characteristic is outside the predetermined range of values, the system alarms.