{
  "source_title": "Fish Eye Lens",
  "author": "Kenro Miyamoto",
  "publisher": "Optica Publishing Group",
  "publication": "Journal of the Optical Society of America 54, 1060-1061 (1964)",
  "doi": "10.1364/JOSA.54.001060",
  "url": "https://opg.optica.org/josa/abstract.cfm?uri=josa-54-8-1060",
  "table": "I",
  "accessed": "2026-09-11",
  "access_method": "Table exposed in publisher HTML; original PDF and figure not retrieved",
  "transcription": "miyamoto-1964-table-i.csv",
  "row_count": 16,
  "field_meanings": {
    "r_as_published": "Surface radius of curvature",
    "d_as_published": "Axial distance",
    "n_d_as_published": "Refractive index at the d line",
    "v_d_as_published": "Abbe number"
  },
  "length_units": "Not established from retrieved table caption; do not silently assume scale",
  "normalization": "Unicode minus normalized to ASCII except row 12; infinity written as text; no leading incident-air-only row included",
  "unresolved": [
    "Exact correspondence to a manufactured Nikkor 8mm f/8",
    "Original figure, sign convention, and length scale",
    "Clear apertures and stop position and dimensions",
    "Row 12 radius punctuation",
    "Glass catalog identities, full dispersion curves, coatings, and absorption"
  ],
  "use_status": "Research transcription only; not a validated production optical prescription"
}