Abstract
Light field displays (LFDs) provide natural and comfortable viewing of 3D content. The generalized light field can be described by a 7D plenoptic function. This can be simplified into a 4D light field that can be decomposed into 2D resolution sample and view sample planes. Different architectures, known as light field 1.0 and light field 2.0, that respectively prioritize depth or resolution can be created based on the relative order of the two planes. Different trade-offs are made to implement light field displays depending on whether they are meant for direct viewing (multiuser) or personal viewing (near-eye). Direct-view displays can be based on scanning, array of projectors, or multilayer optical stack. The two main multilayer approaches are the traditional integral imaging stack with a 2D matrix display and 2D optics array, using micro-lenses or apertures, and a compressive display with a directional backlight and a stack of liquid crystal panels. Head-mounted LFDs can be multifocal plane, integral imaging-based, or computational multilayer. These can be immersive displays for virtual reality applications or optical see-through for augmented reality. A generalized end-to-end system model for LFDs can be used to guide the design based on the requirements.
Abbreviations
- AR:
-
Augmented reality
- CDP:
-
Central depth plane
- DFD:
-
Depth-fused 3D
- DMD:
-
Digital micromirror device
- DOF:
-
Depth of field
- FOV:
-
Field of view
- FP:
-
Focal plane
- HMD:
-
Head-mounted display
- HVS:
-
Human visual system
- InI:
-
Integral imaging
- LF:
-
Light field
- LF-3D:
-
Light field 3D
- LFD:
-
Light field displays
- LF-HMD:
-
Light field head-mounted display
- MFP:
-
Multifocal plane
- micro-InI:
-
Microscopic INI
- MLA:
-
Micro-lens array
- OST:
-
Optical see-through
- S3D:
-
Stereoscopic three-dimensional
- SLM:
-
Spatial light modulator
- VAC:
-
Vergence-accommodation conflict
- VFE:
-
Varifocal element
- VR:
-
Virtual reality
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Hua, H., Balram, N. (2023). Light Field Displays. In: Blankenbach, K., Yan, Q., O'Brien, R.J. (eds) Handbook of Visual Display Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35947-7_218-1
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DOI: https://doi.org/10.1007/978-3-642-35947-7_218-1
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