Method of programmed displacement for prolong usage of...

Details Method of programmed displacement for prolong usage of... Method of programmed displacement for prolong usage of...

2005-02-22

2005-02-22

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Lens

With viewed object or viewed field illumination

C359S798000, C356S515000, C356S124000

Reexamination Certificate

active

06859335

ABSTRACT:
The present invention contemplates a programmed displacement to prolong the usage life of UV crystal for deep UV generation by displacing step by step the crystal with interval between steps much shorter than the degradation time of the crystal. Meanwhile, the present invention contemplates the programmed displacement to obtain stable UV generation by avoiding defect locations of the crystal. Further, the present invention contemplates the programmed displacement to achieve optimal stability in UV power for each layer of UV ablation in photo-refractive surgery.

REFERENCES:
patent: 5144630 (1992-09-01), Lin
patent: 5401948 (1995-03-01), Krichever et al.
patent: 5825562 (1998-10-01), Lai et al.
patent: 6031854 (2000-02-01), Lai
patent: 6373578 (2002-04-01), Nishikawa
patent: 6577387 (2003-06-01), Ross et al.
patent: WO 9955216 (1999-11-01), None
patent: WO 0004952 (2000-02-01), None

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