linescan op• Data kinds: none → table (an op determined by its arguments alone — it takes no image or data input)
• Call: import fullseye as fs; fs.ledger.linescan_lens_example(kind='linescan') (to call the implementation directly, import linescan; linescan.linescan_lens_example(kind='linescan'); from the registry, opsoptics.get("linescan_lens_example"))
Two models of a line-scan imaging system (a table from raytrace.lens_system).
> The detailed description below is the original text — the summary and the headings are translated.
どちらも Cooke の三枚玉(SK16 相当のクラウン / F2 相当のフリント / SK16 相当、絞りは中玉の後ろ)を、57.344 mm(8192 × 7 µm)のセンサで幅 300 mm の web を見る倍率 −0.1911 に合わせて lensopt.optimize_lens で最適化した処方:
• "linescan": f 90 mm、物体距離 519 mm、像高 28.7 mm(センサの端)まで最適化、大きい口径 —— ラインスキャン用レンズの模型(像円がセンサを覆う)。
• "cmount": f 35 mm、物体距離 201 mm、2/3 型の像高 5.5 mm までで最適化し、口径も 2/3 型用 —— 普通の C マウントレンズを長いセンサに流用した模型。同じ形・同じ硝材で、違いは像円だけ。
実在の型番の処方ではない(メーカーの処方は公開されていない)。像円の大きさと口径食の有無という 性質を見るための模型。
Raises ValueError: kind が "linescan" / "cmount" でない。
Every optics op validates its input before computing (nothing slips through silently):
• Units are baked into the argument name — _mm / _um / _deg / _mrad. Confusing mm with µm does not crash; it yields a plausible-looking wrong answer, so the name prevents it. Nothing here guesses the unit from the magnitude.
• Strings raise ValueError — float('50') succeeds, so an unparsed configuration value would slip through as a length (measured: thin_lens('50', '200') returned a plausible 66.667 mm). bool is refused too, as the implicit promotion True == 1.
• complex / masked arrays raise ValueError (real-valued slots only; silently dropping the imaginary part or peeling off the mask is refused). NaN/Inf raises ValueError on every input.
• Division by zero and its relatives are refused by name: focal length 0, radius of curvature 0, refractive index <= 0, a fully opaque aperture (all zeros, so the normalisation is 0/0), a PSF whose sum is <= 0, a Stokes vector with S0 = 0, and an object sitting at the front focal point (the image is at infinity).
• Only two ops return a non-finite value, and both state it as a contract: depth_of_field returns far_mm = inf beyond the hyperfocal distance (that is what the hyperfocal distance means), and gaussian_beam returns wavefront_radius_mm = inf at the waist (the radius of curvature of a plane wavefront). Both also return a finite companion (far_is_infinite / curvature_per_mm). Any other silent NaN/Inf is detected internally and raises ValueError — "float64 overflowed" and "the answer is infinite" are different claims, so the first is never returned wearing the face of the second.
• Size caps: generated grids are capped by optics.MAX_GRID (4096); supplied fields/PSFs/apertures by optics.MAX_FIELD_ELEMENTS (2^24); ABCD element chains by optics.MAX_SYSTEM_ELEMENTS (1024); Zernike by MAX_ZERNIKE_TERMS (512) / MAX_ZERNIKE_ORDER (40) / MAX_ZERNIKE_BASIS (2^25). This closes, fail-closed, the paths where a small argument triggers a huge internal allocation (measured: n_max=40 × 4096² needs 108 GB).
• Physically impossible states are refused too: a Stokes vector with degree of polarisation > 1, negative transmittance, negative intensity, and invalid Zernike indices such as n-|m| odd.
• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).
• Operator provenance and references — the sources of the research/methods this op family came from.
• The canonical algorithm (author, year) and its uses are named in the family usage guide above.
• poc_tdi_linescan — py -3.11 examples/poc_tdi_linescan.py
table as input)abcd_matrix · wavefront_stats · sfr_from_edge · paraxial_trace · seidel_coefficients · spot_stats · tolerance_analysis · wavefront_from_opd
linescan)tdi_snr · tdi_sync_mtf · linescan_acquire · lens_field_profile · linescan_lens_columns
*Provenance: linescan.py — OPTICS operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.