Method and apparatus for improving safety during exposure to...

Details Method and apparatus for improving safety during exposure to... Method and apparatus for improving safety during exposure to...

2007-02-27

2007-02-27

Lee, John D. (Department: 2874)

Optical waveguides

Directional optical modulation within an optical waveguide

Light intensity dependent

C359S599000, C359S600000, C372S029014

Reexamination Certificate

active

10614672

ABSTRACT:
A method and apparatus are disclosed for improving bodily safety during exposure to an eye hazardous monochromatic treatment light source by diverging the light, such as with a diffusing unit attached to the light source distal end so that the radiance of the light exiting the distal end is an eye safe level. At a first position of the light source distal end substantially in contact with an outer surface of a target, the energy density of an exit beam from the distal end is suitable for effecting a desired treatment, and at a second non-contact position of the distal end the exit beam energy density is significantly less than a value suitable for effecting the treatment. In an additional embodiment, the diverging or diffusing unit has a device for evacuating vapors or particles from the target.

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