Abstract
A camera has been developed for low-light level high-resolution viewing inside nuclear reactors. This camera uses an He-Ne laser beam raster scanned across the field of view. By detection of the reflected light using a photomultiplier, the subject viewed can be reconstructed in a video plane and viewed on a conventional TV monitor. Advantages of this system include large depth of field, electronic and/or optical zoom capability, long range (>10 m) in regions such as ducts which conventionally are impossible to illuminate adequately for normal TV work, and resolution to better than 200 µm in the near field.
© 1982 Optical Society of America
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