Invention Grant
- Patent Title: Ultrashort laser micro-texture printing
- Patent Title (中): 超短激光微纹理印刷
-
Application No.: US13799754Application Date: 2013-03-13
-
Publication No.: US08670151B2Publication Date: 2014-03-11
- Inventor: Lawrence Shah , Martin E. Fermann
- Applicant: IMRA America, Inc.
- Applicant Address: US MI Ann Arbor
- Assignee: IMRA America, Inc.
- Current Assignee: IMRA America, Inc.
- Current Assignee Address: US MI Ann Arbor
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Main IPC: G06K1/00
- IPC: G06K1/00

Abstract:
Systems and methods for providing laser texturing of solid substrates are disclosed. The texturing may be used to provide grayscale images obtainable from substrates, which may include steel, aluminum, glass, and silicon. In some embodiments, images may be obtainable from the substrate by modifying the reflective, diffractive, and/or absorptive features of the substrate or the substrate surface by forming random, periodic, and/or semi-periodic micro-structure features on the substrate (or substrate surface) by an ultrafast laser pulse train. The ultrafast pulse train may be modulated in order to vary, for example, optical exposure time, pulse train intensity, laser polarization, laser wavelength, or a combination of the aforementioned. The ultrafast pulse train and the substrate may be scanned with respect to each other to provide different optical energies to different regions of the substrate (or substrate surface). In some embodiments, the image is provided by making one or more passes of the ultrafast laser pulse train relative to the substrate.
Public/Granted literature
- US20130194592A1 ULTRASHORT LASER MICRO-TEXTURE PRINTING Public/Granted day:2013-08-01
Information query