Scientific optical setup diagram: Our prototype display system employs a…

{
  "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..."
  }
}