Marking method and marking apparatus using multiple photon...

Details Marking method and marking apparatus using multiple photon... Marking method and marking apparatus using multiple photon...

2005-03-22

2005-03-22

Hamilton, Cynthia (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Light scattering or refractive index image formation

C430S945000

Reexamination Certificate

active

06869749

ABSTRACT:
A marking method is provided which permits an easy detecting of the presence of a mark without using a specific reading apparatus, and is capable of avoiding a damage as well as a strength deterioration of an object material. The marking method comprises: preparing a marking object; converging, into the marking object, a laser beam having a wave length range so chosen that the laser beam can transmit through a material forming the marking object, and then effecting a multiple photon absorption; and moving a converging position of the laser beam, in a manner such that an area, whose refractive index is changed due to the multiple photon absorption, can form a diffraction pattern capable of diffracting a visible light.

REFERENCES:
patent: 6303930 (2001-10-01), Hagiwara
patent: 6322958 (2001-11-01), Hayashi
patent: 6333486 (2001-12-01), Troitski
patent: 6392683 (2002-05-01), Hayashi
patent: 6417879 (2002-07-01), Hayashi
patent: 6501499 (2002-12-01), Hayashi
patent: 6-500275 (1994-01-01), None
patent: 7-136782 (1995-05-01), None
patent: 2810151 (1998-07-01), None
patent: 11-13896 (1999-01-01), None
patent: 11-267861 (1999-10-01), None
Parthenopoylos et al, “Three-Dimensional Optical Storage Memory”, Science, vol. 245, No. 4920, pp. 843-845, Aug. 25, 1989.

Affiliated with

Also associated with

Rating

Marking method and marking apparatus using multiple photon... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Marking method and marking apparatus using multiple photon..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Marking method and marking apparatus using multiple photon... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3402962