in the present invention a laser treatment system is provided that can be used in any clinical environment without the necessity of personal safety equipment . furthermore , the present invention provides a large amount of control to the operator / technician and the patient . the present invention combines mechanical and optical methods to protect operators and patients from undesired exposure to laser radiation . according to this approach , safe , portable and fixed embodiments that are useful in a large variety of applications , which are now possible . several examples are described .