西安科技大学学报2017，Vol.37Issue(1)：127-132,6.DOI:10.13800/j.cnki.xakjdxxb.2017.0119
数字全息参数优化
Digital holography parameter optimization
王星 1马宏伟 1王豆豆 1董明 1张一澍 1王浩添1
作者信息
- 1. 西安科技大学 机械工程学院,陕西 西安710054
- 折叠
摘要
Abstract
In order to improve the quality of digital hologram,the paper theoretically analyzes the influ-ence of reconstruction distance on the quality of hologram based on Fresnel diffraction. The average gra-dient of the reconstructed image is used as the standard to judge the reconstruction distance,and the pre-cision of reconstruction distance is adjusted by parameters. A method of adjusting the reconstruction dis-tance is proposed,and the experiment of off-axis digital holography is designed. The experimental results show that this method can improve the quality of hologram. In order to avoid the interference of the ob-ject light by the zero-order and twin-image,a model of the CCD plane,reconstructed image and the di-rection of the reference light is established on the basis of the diffraction field width. By analyzing the angle between the reference beam and each axis, a formula of the angle of the reference light is de-duced. Experiments show the controllability of the formula to the angle of reference light.关键词
数字全息/重构距离/参考光角度Key words
digital holography/reconstruction distance/reference light angle分类
信息技术与安全科学引用本文复制引用
王星,马宏伟,王豆豆,董明,张一澍,王浩添..数字全息参数优化[J].西安科技大学学报,2017,37(1):127-132,6.
