1584results about "Electric/magnetic position measurements" patented technology

An imaging apparatus is disclosed. The imaging apparatus includes a motorized stage, a camera focussed relative to the stage, and a processor coupled to the camera. The processor contains instructions which, when executed by the processor, cause the processor to capture an image incident on the camera, convert the image into a plurality of pixels having a characteristic such as intensity, establish the characteristic for each pixel; and determine which pixels contain a target image based on the characteristic of the pixels. Another imaging apparatus includes a motorized stage, a camera having a lens directed toward the motorized stage, and a processor coupled to the camera. The processor contains instructions which, when executed by the processor, cause the processor to select at least three regions of a sample adjacent the motorized stage, develop a focus surface based on a normalized distribution of the at least three selected regions, position the camera on a region of the sample, focus the camera on the surface, and capture an image of the region. In addition, an imaging apparatus having a motorized stage, a camera focussed relative to the motorized stage, a stage position sensor adjacent the motorized stage, and a pulsed light directed toward the motorized stage and coupled to the stage position sensor such that the pulsed light illuminates in response to the stage position sensor is disclosed.

An imaging apparatus. The imaging apparatus may find an area in which a specimen is present, then focus on the specimen and capture images of the specimen during continuous stage motion.

An apparatus for detecting the displacement of a magnet is to be provided. The errors on the detected value due to the variation of temperature or that with time are hardly caused in the apparatus. The apparatus can detect the displacement in high resolution and precision. The apparatus is simple in its structure, and it can be expected that the apparatus can be manufactured in low cost. The apparatus is not limited in its application by the range of the displacement of the magnet. Further, a method for detecting the displacement of a magnet will be provided. An apparatus for detecting the displacement of a magnet M, the apparatus being characterized in that it further comprises a plurality of hall devices H0-H7 disposed in a predetermined spacing DP along a displacing path of the magnet in parallel thereto, wherein each of said hall devices includes a magnetically sensitive surface HS through which a magnetic flux from said magnet M permeate to generate an output the polarity and the voltage of which are depend on the direction and the density of the magnetic flux, and said magnetically sensitive surface HS of each hall device is disposed in a predetermined distance from the displacing path of the magnet M in parallel with the direction defined by the magnetic poles, and whereintwo adjacent hall devices inverted in the polarity of their output voltages are detected to determine the general position of the magnet, and the precise position of the magnet between these two hall devices is determined on the basis of the output voltages.