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    • 2. 发明公开
    • Custom phase plate
    • MaßgeschneidertePhasenplatte
    • EP2161609A1
    • 2010-03-10
    • EP09160048.6
    • 2009-05-12
    • Heidelberg Engineering GmbH
    • Bille, Josef F.
    • G02B27/00B23K26/06
    • G02B27/0025B23K26/06B23K26/0624B23K2103/32B23K2103/50G02B5/32G02B26/06
    • A custom phase plate for a light beam of wavelength "λ" includes a sheet of plastic material having a base refractive index "n o ". Formed onto a surface of the sheet is a plurality of contiguous spots having different refractive indices. Together, the spots establish a diffraction pattern in a light beam that removes optical aberrations from the beam. Specifically, each spot has a selected Optical Path Difference (OPD) relative to the base index (n o ) that is equal to kλ/10 (for k = 1 to 10). Further, the OPD for each spot in the pattern is individually established by heating the plastic material with a laser beam of ultra-short pulses.
    • 用于波长“»”的光束的定制相位板包括具有基底折射率“n”的塑料材料片。 形成在片材的表面上的是具有不同折射率的多个连续点。 一起,斑点在光束中建立衍射图案,从而去除光束的光学像差。 具体地,每个点具有相对于基本索引(n o)的选择的光程差(OPD),其等于k»/ 10(对于k = 1至10)。 此外,图案中每个点的OPD通过用超短脉冲激光束加热塑料材料单独地建立。