21. A PG-1M panoramic telescope with K-1 collimator can be used for sighting. 22. The collimator provides three rectangular apertures. 23. In the transmitted direction the beam is split and then combined and focused into the output collimator . 24. In the lower panel of the figure, a collimator has been added ( blue bars ). 25. In 1993, Brainlab developed a linear accelerator-based system for stereotactic radiosurgery using micromultileaf collimators . 26. The Vityaz-SN is provided with two types of mounting rails for optical or collimator sights. 27. Light can be approximately collimated by a number of processes, for instance by means of a collimator . 28. A wheel type radiotherapy device which has a long collimator to focus the radiation into a narrow beam. 29. In the 1970s the US introduced a modern version of the French device and called it a collimator . 30. The collimator provides a 2.75-in by 5.5-in . rectangular aperture.
