IMAGING APPARATUS FOR WELDING

PROBLEM TO BE SOLVED: To provide an imaging apparatus for welding capable of creating an imaged screen to observe the welded state over a wide brightness range. SOLUTION: The imaging apparatus comprises a photoelectric conversion part (1) to output an electric signal as an analog sensor signal with...

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Bibliographic Details
Main Authors ODA KOJI, OTSUKA KEIJI, FURUKAWA MAKOTO, SEKI HIDEO
Format Patent
LanguageEnglish
Published 19.07.2002
Edition7
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
PICTORIAL COMMUNICATION, e.g. TELEVISION
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:PROBLEM TO BE SOLVED: To provide an imaging apparatus for welding capable of creating an imaged screen to observe the welded state over a wide brightness range. SOLUTION: The imaging apparatus comprises a photoelectric conversion part (1) to output an electric signal as an analog sensor signal with a level responding to an illumination intensity by receiving incident light from a welding site, an A/D conversion part (2) to convert the sensor signal into a digital sensor signal and a level conversion part (4) to convert a level of the digital sensor signal outputted from the conversion part (2) or a level of the digital sensor signal corrected the outputted digital sensor signal to have a mutual linear relation across a predetermined illumination intensity and a level range of the sensor signal to vary with logarithm against variations of the illumination intensity only within a predetermined illumination intensity of the incident light.
Bibliography:Application Number: JP20000399893