Method and apparatus for treating a surface with a scanning lase

Details Method and apparatus for treating a surface with a scanning lase Method and apparatus for treating a surface with a scanning lase

1995-09-13

1996-08-13

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359201, 359859, 359900, 250234, 21912174, G02B 2608

Patent

active

055462146

ABSTRACT:
A method and apparatus are disclosed for laser treatment of surfaces, such as tissue. In a preferred embodiment, the invention employs a unique reflective optical delivery system which produces an improved beam intensity cross-section which reduces thermal injury, increases the precision of the tissue interaction and allows the creation of craters with decreased sizes. Reflective optics provide precise, single-layer vaporization at low power levels without thermal injury to the underlying papillary dermis. Movable optical elements focus and direct the laser beam in a scanning pattern to treat a large area of the surface.

REFERENCES:
patent: 3887263 (1975-06-01), Thompson, III
patent: 4117319 (1978-09-01), White, III
patent: 4387952 (1983-06-01), Slusher
patent: 5128509 (1992-07-01), Black et al.
patent: 5411502 (1995-05-01), Zair

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