| 摘要 |
<p>A method and apparatus for providing separate secondary beams (23) of light from a primary light beam (21) achieved by locating diversionary means such as prisms (22) partially across the main beam (21) so that the degree of insertion provides for control of the magnitude of the secondary beam (23) especially useful for activating in more uniform manner a sensitizing drug when in a tumour. The secondary beams (23) can be commonly focused through lens (24) onto light fibre ends (25) for transmission into the activating areas.</p> |
