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In-situ momental production of silver halide holograms, HOEs, holographic interferograms, and speckle photographs for real-time optical inspections

Current manufacturing processes require rapid, inexpensive and reliable techniques for optical inspections of machinery, products and components. Holography and holographic interferometry in spite of their attractive features are rather rarely used for industrial inspections of products and components due to relative complexity, costs, lengthy multi-stage procedures, need of dark rooms and vibration insulation. The technique of momental holography permits to produce high quality silver halide holograms, HOEs, holographic interferograms and speckle photographs within a few seconds. It is monobath technique with single liquid bath for rapid photoprocessing. No other chemical solutions are required in this case. Quite novel modification of the technique is bathless momental holography which also permits to produce high quality holograms, HOEs, holographic interferograms and specklegrams within a few seconds. No baths with liquid chemicals are used. Bathless holograms, HOEs, holographic interferograms recorded on holographic silver halide media and produced momentally in situ are presented in this work. In situ bathless momental technique is quite inexpensive and very simple. It suits ideally for real time optical inspections which are easily performed without any extra photoprocessing devices located in the recording setup and without special liquid gates for exposure and in situ photoprocessing in the recording setup. Another distinctive feature of technique is the possibility to avoid dark rooms and to work in brightly lighted environment. Thus the most drawbacks of holography are eliminated and real time industrial optical checks of products and components can be simply implemented.