Laser processing apparatus

Details Laser processing apparatus Laser processing apparatus

2008-01-09

2010-11-30

Font, Frank G (Department: 2872)

Optical: systems and elements

Compound lens system

C359S894000, C219S121600

Reexamination Certificate

active

07843633

ABSTRACT:
The present invention relates to a laser processing apparatus which can be miniaturized and has a structure for achieving effective protection of the fiber laser light source. The laser processing apparatus comprises a fiber laser light source, a collimator, a spatial filter, an optical isolator, and a condenser lens. The optical isolator emits laser light from the collimator laser light in parallel to the direction of incidence of the laser light, and emits return light from the condenser lens at a predetermined angle with regard to the direction of incidence of the return light. The spatial filter comprises a pair of condenser lenses disposed such that the focal point is formed therebetween, and a pinhole mask disposed such that the pinhole is located at the focal point. At least, a part of the return light emitted from the optical isolator is blocked by the pinhole mask of the spatial filter.

REFERENCES:
patent: 3329474 (1967-07-01), Harris et al.
patent: 4548478 (1985-10-01), Shirasaki
patent: 5136598 (1992-08-01), Weller et al.
patent: 5384689 (1995-01-01), Shen
patent: 5546486 (1996-08-01), Shih et al.
patent: 5661829 (1997-08-01), Zheng
patent: 5780806 (1998-07-01), Ferguson et al.
patent: 6075642 (2000-06-01), Chang
patent: 6236146 (2001-05-01), Cramer et al.
patent: 6278078 (2001-08-01), Walvoord et al.
patent: 6335941 (2002-01-01), Grubb et al.
patent: 6407844 (2002-06-01), Yang et al.
patent: 6742694 (2004-06-01), Satoh et al.
patent: 6747243 (2004-06-01), Reinhardt
patent: 6888853 (2005-05-01), Jurgensen
patent: 7287312 (2007-10-01), Yamaguchi
patent: 2006/0092994 (2006-05-01), Frankel et al.
patent: 2006/0204177 (2006-09-01), Singh et al.
patent: 2008/0013163 (2008-01-01), Leonardo et al.
patent: 2008/0053970 (2008-03-01), Nakamae
patent: 2009/0091839 (2009-04-01), Kakui et al.
patent: 2009/0272877 (2009-11-01), Tamaoki et al.
patent: 57-100410 (1982-06-01), None
patent: 61-58809 (1986-12-01), None
patent: 05-224151 (1993-09-01), None
patent: 06-077638 (1994-03-01), None
patent: 09-054283 (1997-02-01), None

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