Optical method for real-time position control in experimental equipment for local irradiation and system for precise and discrete local irradiation

Complex up-graded equipment for visual analysis, measurement, positioning and intervention in microscopic field is described below. This system is not extremely automated because it have not obstructs the user's facilities and his possibility to operate immediately in the studied process. The high accurate system for positioning speculates the superior precision of the metrological criterions based on methods with symmetric framing. The present paper indicates just the final solution and mentioned some interesting remarks about the disadvantages of other tested solutions. This equipment is suitable for various studies of the effects of laser interaction in biological tissues and not only, in photolithography, laser cleaning, for different techniques of identification etc.