Dual Modulation Optical Setup Diagram

{
 "type": "scientific optical setup diagram",
 "main_setup": {
 "base": "optical breadboard table with grid of mounting holes",
 "beam": "red laser beam passing horizontally through all components",
 "top_grouping_brackets": [
 "Dual Modulation\",
 "4f Relay Optics",
 "Imaging Optics",
 "Detection"
 ],
 "components_left_to_right": [
 { "name": "Laser", "label": "λ = 632.8 nm\", "appearance": "black rectangular box" },
 { "name": "SLM1", "label": "(Phase / Pol. Mod.)", "appearance": "black square device on post" },
 { "name": "Lens L1", "label": "(f1)", "appearance": "lens in black ring mount" },
 { "name": "Iris", "label": "Fourier Plane (Pupil Plane) / (Higher Orders Filtered)", "appearance": "black ring mount with dashed line above" },
 { "name": "HWP", "label": "(λ/2)", "appearance": "purple-tinted optic in black ring mount" },
 { "name": "Lens L2", "label": "(f1)", "appearance": "lens in black ring mount" },
 { "name": "SLM2", "label": "(Phase / Pol. Mod.)", "appearance": "black square device on post" },
 { "name": "Lens L3", "label": "(f2)", "appearance": "lens in black ring mount" },
 { "name": "Lens L4", "label": "(f2)", "appearance": "lens in black ring mount" },
 { "name": "Linear Polarizer", "label": "(Global Analyzer)", "appearance": "lens in black ring mount" },
 { "name": "Polarization Camera", "label": "POLARIZATION CAMERA", "appearance": "blue and black box camera" }
 ]
 },
 "inset_diagram": {
 "position": "bottom right, dashed border",
 "title": "Polarization Camera Micro-Polarizer Array\ (Per-Pixel Analyzer)",
 "visuals": "4x4 grid of colored squares with white directional arrows",
 "legend_count": 4,
 "legend_labels": [
 "red right-arrow 0° (H)",
 "green up-arrow 90° (V)",
 "blue diagonal-arrow 45° (D)",
 "yellow diagonal-arrow 135° (A)"
 ]
 },
 "bottom_caption": {
 "figure_number": "Fig. 5.",
 "title": "Ellipsography Hardware Setup.\",
 "description": "Our prototype display system employs a dual-modulation configuration to achieve simultaneous control of phase and polarization. A 4f relay optics setup transfers the modulated wavefront...\"
 }
}