Speckle reduction using phase plate array and lens array
Journal Title: Opto-Electronic Advances - Year 2020, Vol 3, Issue 1
Abstract
In this paper, a solution for speckle reduction using phase plate array (PPA) and lens array (LA) in a motionless way is proposed. The specially designed PPA is composed of sub-phase plates, which are constituted by phase patterns formed by Hadamard sub-matrices. Each component of the proposed optical system should satisfy the stated relationships. The incident laser beam will be incoherent after passing through PPA, and superpose on the screen under the action of LA and main lens. Speckle reduction can be achieved by the averaging of the incoherent speckle patterns. Because of abandoning the mechanical movement, it will be suitable for laser displays and images.
Authors and Affiliations
Xiaohui Ma, Anting Wang*, Fenghua Ma, Shuimei Wu, Hai Ming
Keywords
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- EP ID EP683124
- DOI 10.29026/oea.2020.190036
- Views 171
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