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Conference Paper
Large-Aperture Flat Diffractive Optics for Ghost-Suppressed Full-Color Holographic AR Displays
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- Authors
- Hyun-Eui Kim
- Issue Date
- 2026-10
- Citation
- International Symposium on Mixed and Augmented Reality (ISMAR) 2026, pp.1039-1040
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- Large-area spatial holographic AR requires optical apertures whose space-bandwidth product scales with image size and field of view, yet centimeter-scale refractive optics are bulky. We present a closed-form carrier-allocation rule for a 100 mm × 100 mm full-color multilevel diffractive optic that co-locates the three RGB signal orders at a common focal-plane coordinate while displacing cross-channel parasitic orders outside the signal aperture, without iterative optimization. For f = 450 mm and a 10° carrier, the RGB orders co-locate at u = 79.3 mm and the nearest parasitic order is displaced by 10.8 mm. The fabricated optic forms ghost-suppressed, depth-resolved real images over a 0–600 mm range in a spatial holographic AR testbed.
- Keyword
- Diffractive optics, holographic display, augmented reality, flat optics
- KSP Keywords
- Allocation rule, Augmented reality(AR), Diffractive optics, Field Of View(FOV), Large aperture, Refractive optics, centimeter-scale, closed-form, flat optics, full-color, holographic display