{
  "type": "scientific hardware diagram",
  "layout": {
    "main_scene": "3D render of an optical table with a red laser beam passing through 11 aligned optical components mounted on black posts.",
    "top_brackets": [
      {"label": "Dual Modulation", "span": "SLM1"},
      {"label": "4f Relay Optics", "span": "Lens L1 to Lens L2"},
      {"label": "Imaging Optics", "span": "SLM2 to Lens L4"},
      {"label": "Detection", "span": "Camera"}
    ],
    "optical_components_left_to_right": [
      {"name": "Laser", "labels": ["Laser", "λ = {argument name=\"laser wavelength\" default=\"632.8 nm\"}"]},
      {"name": "SLM1", "labels": ["SLM1", "(Phase / Pol. Mod.)"]},
      {"name": "Lens L1", "labels": ["Lens L1", "(f1)"]},
      {"name": "Iris", "labels": ["Fourier Plane", "(Pupil Plane)", "Iris", "(Higher Orders Filtered)"]},
      {"name": "HWP", "labels": ["HWP", "(λ/2)"]},
      {"name": "Lens L2", "labels": ["Lens L2", "(f1)"]},
      {"name": "SLM2", "labels": ["SLM2", "(Phase / Pol. Mod.)"]},
      {"name": "Lens L3", "labels": ["Lens L3", "(f2)"]},
      {"name": "Lens L4", "labels": ["Lens L4", "(f2)"]},
      {"name": "Linear Polarizer", "labels": ["Linear", "-Polarizer", "(Global Analyzer)"]},
      {"name": "Polarization Camera", "labels": ["POLARIZATION CAMERA"]}
    ],
    "inset_box": {
      "position": "bottom right",
      "title": "Polarization Camera Micro-Polarizer Array (Per-Pixel Analyzer)",
      "grid": "4x4 grid of colored squares with directional arrows",
      "legend_count": 4,
      "legend_items": [
        "Red square, horizontal arrow, 0° (H)",
        "Green square, vertical arrow, 90° (V)",
        "Blue square, diagonal arrow, 45° (D)",
        "Yellow square, diagonal arrow, 135° (A)"
      ]
    },
    "bottom_caption": {
      "figure_prefix": "{argument name=\"figure number\" default=\"Fig. 5.\"}",
      "title": "{argument name=\"system name\" default=\"Ellipsography Hardware Setup.\"}",
      "text": "Paragraph of scientific text explaining the dual-modulation configuration, 4f relay optics, and polarization camera."
    }
  }
}