Figure 3 | Scientific Reports

Figure 3

From: Fast-switching laterally virtual-moving microlens array for enhancing spatial resolution in light-field imaging system without degradation of angular sampling resolution

Figure 3

(a) Oblique view of the scanning electron microscope (SEM) image of the MLA with the square-arranged bed-pillow-shaped elemental lens surface topology, which is used as the master mould during the nano-imprinting process. (b) Cross-sectional view of the SEM image of the single PDMLA. (c,d) Polarizing optical microscope images of the single PDMLA observed between the crossed polarizers, wherein the rubbing direction is (c) parallel and (d) at 45° with respect to the transmission axis of one of the polarizers. (e,f) Measured and ideal relative phase delay profiles of the single PDMLA, wherein the measured results are derived from the phase unwrapping of the fringe ring patterns shown in (d) along the sampling directions of (e) a–a’ and (f) b–b’.

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