Translator Disclaimer
10 February 2017 Experimental study on defocus image in optical scanning holography
Author Affiliations +
Proceedings Volume 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016); 102500R (2017) https://doi.org/10.1117/12.2266840
Event: Fourth International Conference on Optical and Photonics Engineering, 2016, Chengdu, China
Abstract
A pinhole is usually used as the pupil in traditional optical scanning holography (OSH) method. Although such a structure is relatively simple, the in-focus sectional image may be degraded by out-of-focus haze because of its difficulty to be eliminated in sectional image reconstruction. In this paper, a random-phase pupil is employed in OSH system to reduce the impact of defocus image. It is proved by the experimental results that the defocus image trends to be more easily dispersed into speckle-like pattern, and then it can be removed by connected component method in the future. Analysis also focuses on the correlation coefficient between the original image and the reconstructed images under the conditions of adopting a pinhole or a random-phase pupil. From comparison, as the defocus distance increasing, one can find that the correlation coefficient of image by using a random-phase pupil is decreasing faster than using a pinhole pupil.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jianming Yue, Dingfu Zhou, Sheng Yuan, Peng Zhang, Aqian Sun, and Xin Zhou "Experimental study on defocus image in optical scanning holography", Proc. SPIE 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016), 102500R (10 February 2017); https://doi.org/10.1117/12.2266840
PROCEEDINGS
6 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

New scheme of OCDMA encode/decode
Proceedings of SPIE (October 16 2001)
Holographic codes and object authentication
Proceedings of SPIE (May 11 2009)
An analysis to the Fresnel diffraction of a grating
Proceedings of SPIE (December 07 2003)
Theoretical study and applications of Talbot effect
Proceedings of SPIE (September 28 2004)

Back to Top