论文信息 - Moiré alignment and positioning using a synthetic Fresnel zone plate

Moiré alignment and positioning using a synthetic Fresnel zone plate

Abstract A new method for optical alignment and positioning is proposed. The actual position and shape of a spherical wavefront emerging from an optical system to be aligned are interferometrically encoded as “live” fringes similar to a Fresnel zone plate (FZP). Any in-plane misalignment and inaccurate positioning are detected in real-time as a unique moire pattern by overlapping the “live” fringes and a synthetic interferometric FZP which is regarded as a reference grating. Experimental data are presented and future applications are suggested.

Toshimitsu Asakura | Gheorghe T. Olaru

[1] K. Patorski,et al. Optical alignment using Fourier imaging phenomenon and Moire technique , 1975 .

[2] H. Chau. Properties of Two Overlapping Zone Plates of Different Focal Lengths , 1970 .

[3] Alex Grumet. A Moire Technique for Rapid Alignment, Focus, and Scaling of Imagery , 1976 .

[4] M. Young. Zone Plates and Their Aberrations , 1972 .

[5] J C Wyant,et al. Using computer generated holograms to test aspheric wavefronts. , 1972, Applied optics.

[6] Olof Bryngdahl,et al. Characteristics of superposed patterns in optics , 1976 .

[7] K. Biedermann,et al. Large-size distortion-free computer-generated holograms in photoresist. , 1977, Applied optics.

[8] Olof Bryngdahl,et al. Moiré: Formation and interpretation , 1974 .

[9] W. Cooke. Planetary atoms (A) , 1982 .

[10] D. Gabor. A New Microscopic Principle , 1948, Nature.

[11] J. N. Latta,et al. Computer-based analysis of hologram imagery and aberrations. I. Hologram types and their nonchromatic aberrations. , 1971, Applied optics.