Speckle reduction using phase plate array and lens array
| Autor: | Ma Fenghua, Wu Shuimei, Anting Wang, Xiaohui Ma, Hai Ming |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Phase (waves) Physics::Optics laser display 02 engineering and technology lens array law.invention 03 medical and health sciences Speckle pattern Phase plate Optics hadamard law Hadamard transform Electrical and Electronic Engineering Lens array 030304 developmental biology speckle reduction 0303 health sciences Speckle reduction business.industry QC350-467 Optics. Light 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Lens (optics) 0210 nano-technology business |
| Zdroj: | Opto-Electronic Advances, Vol 3, Iss 1, Pp 190036-1-190036-7 (2020) |
| ISSN: | 2096-4579 |
| DOI: | 10.29026/oea.2020.190036 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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