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학술대회 Noise-filtering Method for Large-scale Holographic 3D Display
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김현의, 남제호, 홍기훈, 김진웅
International Conference on Imaging Systems and Techniques (IST) 2018, pp.36-40
18MF1200, 디지털 홀로그래픽 테이블탑형 단말 기술 개발, 김진웅
In a digital holographic display, it is not desirable to observe the conjugate image and zeroth-order diffracted light in the reconstructed image. To remove noise, various methods have been proposed to limit the noise bandwidth in the Fraunhofer region using optics. In general, a 4-F relay optic-based noise-filtering system is used in these noise-filtering methods. However, in the case of a holographic display configuration, where a conventional 4-F relay optics-based noise-filtering optical system is applied, the optical performance at a critical level is required because the diffraction angle and display area become larger. Here, we propose parallel noise filtering as a new method to remove the optical noise in a holographic display. The proposed parallel noise-filtering method can be achieved by applying a new noise-filtering optical system based on 2-F relay optics. The proposed technique significantly reduces the burden on the holographic display optics configuration and dramatically reduces the optical path to enable a holographic display with a commercially available form factor.
3D display, Holography, Noise filtering
KSP 제안 키워드
3D display, Critical level, Diffracted light, Filtering method, Filtering system, Form factor, Noise bandwidth, Noise filtering, Optical path, holographic display, large-scale