Method for thermally testing with a laser the edge of a sapphire

Details Method for thermally testing with a laser the edge of a sapphire Method for thermally testing with a laser the edge of a sapphire

1996-02-29

1998-01-20

Gutierrez, Diego F. F.

Thermal measuring and testing

Thermal testing of a nonthermal quantity

Of susceptibility to thermally induced deteriouration, flaw,...

G01N 360, G01N 2500

Patent

active

057094713

ABSTRACT:
A sapphire window is laser edge tested using a CO.sub.2 laser spot illuminating along a path following the periphery of the optical surface of the window so as to diffuse heat towards the edges which may crack and fail if defective with subsurface defects which are likely to cause stress fractures when stressed.

REFERENCES:
patent: 4043177 (1977-08-01), Swift
patent: 4468136 (1984-08-01), Murphy et al.
patent: 4632561 (1986-12-01), Rosencwaig et al.
patent: 4710030 (1987-12-01), Tauc et al.
patent: 4752140 (1988-06-01), Cielo et al.
patent: 5131758 (1992-07-01), Heyman et al.
"High Performance Sapphire Windows" by S. C. Bates, Conference Paper 3rd National Technology Transfer Conference and Exposition, vol. 2, pp. 460-469, Feb. 1993 (only abstract considered).
"Arcjet Exploratory Test of ARC Optical Window Design for the AFE Vehicle" by E. E. Whiting,. et al., AAIA Technical Library, Apr. 1991 (only abstract considered).
"Thermal Shock Testing of Optical Ceramics", by D. Lewis, III, SPIE vol. 297, Emerging Optical Materials, Aug. 25, 1981, Conference Proceedings; International Society for Optical Engineering, pp. 120-124, 1982.

Affiliated with

Also associated with

Rating

Method for thermally testing with a laser the edge of a sapphire does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for thermally testing with a laser the edge of a sapphire, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for thermally testing with a laser the edge of a sapphire will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-720958