Method and laser system for creation of laser-induced damages to produce high quality images
DCFirst Claim
1. A method of producing high quality laser-induced images inside optically transparent materials by simultaneously generating breakdowns in two or more separate focused small points comprising the steps of:
- determining right form and size of an etch point;
determining optimal sizes of focal spots allocated inside etch point area;
creating said etch points for production of a black-white image;
creating etch points of the said form and size for production of an image gradation;
generating a main laser beam having a main energy level;
transforming and focusing said main laser beam into two or more separate small spots inside a transparent material area corresponding to the said etch point;
etch point brightness control.
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Abstract
Embodiments of methods and laser system for creating laser-induced damages inside a transparent material are disclosed. One or more embodiments of the invention comprise a method and system for production of an etch point by generating breakdowns in several separate focused small points inside the etch point area. Other embodiments of the invention comprise a method for production of etch points which have the same size but different brightness. Laser-induced damages produced by this method permit to reproduce image gradation without changing of their spatial resolution. According to the invention it is made by variation of a number of focused small points inside an etch point area. Other embodiments of the invention comprise method for creation of an etch point with desirable form. Using such etch points it is possible to produce images which from different directions will have right brightness.
112 Citations
8 Claims
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1. A method of producing high quality laser-induced images inside optically transparent materials by simultaneously generating breakdowns in two or more separate focused small points comprising the steps of:
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determining right form and size of an etch point;
determining optimal sizes of focal spots allocated inside etch point area;
creating said etch points for production of a black-white image;
creating etch points of the said form and size for production of an image gradation;
generating a main laser beam having a main energy level;
transforming and focusing said main laser beam into two or more separate small spots inside a transparent material area corresponding to the said etch point;
etch point brightness control. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification