发明名称 |
Digital imaging assembly and methods thereof |
摘要 |
A coherent radiation imaging system that produces digital images with a reduced amount of speckle. Radiation from a long coherence length source is used to form an image of a sample. The output coherent wave is temporally divided into a plurality of wavelets. The spatial phase of each wavelet is then modulated a known and different amount. Each phase modulated wavelet illuminates the sample and is perturbed by its interaction with the sample. A spatial phase map of each perturbed wavelet is then created and converted to a sample image with an image reconstruction program. The plurality of sample images thus formed is statistically averaged to form a final averaged image. The high frequency speckle that is not optically resolvable tends to average to zero with continual statistical averaging, leaving only the optically resolvable lower frequency phase information.
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申请公布号 |
US7282716(B2) |
申请公布日期 |
2007.10.16 |
申请号 |
US20040983053 |
申请日期 |
2004.11.05 |
申请人 |
WAVEFRONT ANALYSIS, INC. |
发明人 |
PRELEWITZ DAVID;GRAY ROBERT;GERCHBERG ROLF;WEINER MICHAEL |
分类号 |
G01J5/02;G01B9/02;G01B11/02;G02B21/06;G02B27/48;G06K9/00;G06K9/40 |
主分类号 |
G01J5/02 |
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