Abstract:
A medical imager, primarily for use in oral and dental applications. The imager has a source for providing a plurality of collimated beams of non-ionising radiation, in particular near-infrared light, and a plurality of correlated detectors. Each detector is arranged to receive unscattered light from one or part of one of said collimated beams and scattered light from one or more other beams. The imager further comprises means for using both the unscattered and scattered light to form an image.
Abstract:
A medical imager, primarily for use in oral and dental applications. The imager has a source for providing a plurality of collimated beams of non-ionizing radiation, in particular near-infrared light, and a plurality of correlated detectors. Each detector is arranged to receive unscattered light from one or part of one of said collimated beams and scattered light from one or more other beams. The imager further comprises means for using both the unscattered and scattered light to form an image.
Abstract:
An optical inspection system and method for detecting flaws on a diffractive surface such as a reticle or wafer, includes illuminating a surface to be inspected to generate a first scattered energy angular distribution in response to a flaw on the surface and a second scattered energy angular distribution in response to an unflawed surface; the first and second energy distributions are sensed and the minimum energy detection energy level is established; determining whether the minimum detected energy level is in a first or second predetermined energy range and indicating that no flaw is present when the minimum detected energy level is in the first range and a flaw is present when the minimum detected energy level is in the second range.
Abstract:
The invention is an automated solder joint inspection system for determining the quality of a specular soldered joint through examination of the shape of the joint surface using a series of point light sources and the associated highlight reflections from the joint surface. The light from the point light sources, which is directed toward the solder joint, is reflected in a pattern from the solder joint to an array of light responsive transducers, such as a camera, at a fixed location. Utilizing the intensity values from the light responsive transducer array, a binary grid map is generated for the reflections from each point light source. Using known surface features of solder joints along with curve fitting techniques, a series of grid maps may be mathematically interpreted to reconstruct the solder joint surface. A rule-based system, through comparison with acceptable solder joint surface features, evaluates and classifies the joint for an acceptability determination.
Abstract:
An apparatus for detecting contaminants depositing on the reticle of a reduction projection mask aligner comprises a laser spot projector which conducts a laser beam to the light path upstream of the condenser lens of the aligner such that the laser beam is in the same direction as of the exposure light beam. The laser spot projector projects the laser beam from above the reticle through the condenser lens so as to form a laser spot on the upper surface of the reticle. A laser spot scanner which scans the entire area of the reticle by the laser spot projected on to the reticle by the laser spot projector, and a photoelectric detector which receives the scattered light emitted aslant on the reticle surface, whereby a contaminant on the reticle is detected in accordance with the signal produced by the detector.
Abstract:
Photovoltaic thin film quality control is obtained where the thin film is supported by a support and a section of the film is illuminated by a polychromatic illumination source. The source forms on the thin film a continuous illuminated line. Discrete sampled points located on the illuminated line are imaged onto a two dimensional optical switch. A concordance look-up-table between the coordinates of the above sampled points on the thin film and their coordinates on the two dimensional optical switch are generated. The spectral composition of the illumination reflected by the sampled points is determined and photovoltaic thin film parameters applicable to the quality control are derived from the spectral composition of reflected or transmitted by the photovoltaic thin film illumination.
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that is produced by the mutual overlapping of a plurality of radiation beams to be used, or corresponding to the induced radiation light signals in a manner of the wavelength region. SOLUTION: The specimen 12, which is supported on the imager stage of a specimen imaging scanning type imager and in which a plurality of kinds of probes are inserted, are scanned in a time division multiplexed manner by a rotating polygon scanner set 160 or the like, by using the radiation beams from a plurality of the radiation sources 62' and 62" arranged in a predetermined positional relation, based on the incident side opening of an optical path 154. The light signal, which is produced by the action of the radiation beams on the specimen 12 and time-multiplexed scanning, while excluding interference, is transmitted to a photosensor system by the optical path 154. The light signal due to a photosensor 98 is received and detected corresponding to the group of the radiation sources, and the light signal sensed by the photosensor 98 is processed by a control unit 80 that is a processor. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a surface inspection apparatus and a surface inspection method capable of detecting the state of defects in the surface of matter in detail. SOLUTION: In the surface inspection apparatus and the surface inspection method for inspecting a surface to be inspected 40 on the basis of the intensity of reflected light when irradiating light irradiated to the surface to be inspected 40 is reflected, an optical fiber 41 and a diffusing plate 42 irradiate the surface to be inspected 40 with the irradiating light having a light intensity distribution more intense to the side of the surface to be inspected 40, and a CCD sensor 44 detects the intensity of reflected light when the irradiating light is reflected by the surface to be inspected 40. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To more accurately detect cells, while suppressing the occurrence number of false images or ghosts by enhancing the throughput, reliability (accuracy) and the scanning speed. SOLUTION: The sweep irradiation with a radiation beam 64' is applied to a specimen 12', which is supported on the stage 20' of an imager 10', from an orthogonal direction by a scanning-type radiation source 110 so that preferably almost circular irradiation spot due to the radiation beam 64' traverses the specimen 12'. Optical paths, for example, the incident side openings 124 and 126 of branch optical fiber bundles 120 and 122 orthogonally face and are arranged with respect to the specimen 12' so as to approach the locus of the irradiation spot. The light signal, emitted by the specimen 12' corresponding to irradiation with the radiation beam 64', is transmitted to the emission side opening 52' by the optical paths to be sensed in the emission side opening 52' by a photosensor 90' and is processed by a processor 80' to form an image the specimen 12'. COPYRIGHT: (C)2006,JPO&NCIPI