photoelastic opimages → tableimport fullseye as fs; fs.ledger.retardation_unwrap_multiwavelength(deltas_rad, wavelengths_nm, max_retardation_nm, folded=True) (実装を直接呼ぶなら import photoelastic; photoelastic.retardation_unwrap_multiwavelength(deltas_rad, wavelengths_nm, max_retardation_nm, folded=True)、台帳から引くなら opsoptics.get("retardation_unwrap_multiwavelength"))複数波長の巻いた位相差から絶対位相差(nm)を決める(分散なしの仮定)→ dict。
The retardation R = t·Δn [nm] is assumed independent of wavelength
(no dispersion of C). For each pixel, every candidate from the first
wavelength, R = (k + f)λ1 (and (k + 1 − f)λ1 when folded,
f = δ1/2π), up to max_retardation_nm, is scored by how well it
predicts the measured phase at every other wavelength (residual in nm);
the best candidate wins.
folded=True is for phases in [0, π] that cannot tell δ from 2π − δ
(:func:photoelastic_phase_estimate with stokes6); folded=False
is for phases wrapped into [0, 2π).
Returns retardation_nm, delta_rad (the unwrapped phase at the first
wavelength), residual_nm (best score), margin_nm (second best −
best, among candidates more than λ_min/4 away from the answer: when it is
small another order fits almost as well — add a wavelength or reduce
max_retardation_nm) and valid: False where no candidate up to
max_retardation_nm exists for that pixel (its first-wavelength phase
alone already needs more), and the four numbers are NaN there.
Raises ValueError: fewer than 2 wavelengths, mismatched counts or
shapes, wavelengths outside [10, 20000] nm or repeated, phases outside
[0, π] (folded) / [0, 2π) (unfolded), a range over 1000 waves, or a
max_retardation_nm below the smallest candidate of every pixel.
optics の全 op は入力を検証してから計算する(黙って通さない):
_mm / _um / _deg / _mrad。mm と µm の取り違えは crash ではなく「もっともらしく間違った答え」なので、名前で防ぐ。大きさから単位を推測する処理は一切しない。ValueError — float('50') は成功してしまうため、未パースの設定値が長さとして通り抜ける(実測: thin_lens('50', '200') がもっともらしい 66.667 mm を返していた)。bool も True == 1 の暗黙昇格として拒否。ValueError(実数枠のみ。虚部の無言切り捨て・マスク剥がしを拒否)。NaN/Inf は全入力で ValueError。depth_of_field の過焦点距離以遠の far_mm = inf(それが過焦点距離の定義)と gaussian_beam のウエストでの wavefront_radius_mm = inf(平面波面の曲率半径)。どちらも有限の相棒(far_is_infinite / curvature_per_mm)を併せて返す。それ以外の無言 NaN/Inf は内部で検出して ValueError —「float64 が溢れた」と「答えが無限大」は別の主張なので、後者の顔で前者を返さない。optics.MAX_GRID(4096)、供給された場/PSF/開口は optics.MAX_FIELD_ELEMENTS(2^24)、ABCD 素子列は optics.MAX_SYSTEM_ELEMENTS(1024)、Zernike は MAX_ZERNIKE_TERMS(512)/ MAX_ZERNIKE_ORDER(40)/ MAX_ZERNIKE_BASIS(2^25)。小さな引数から巨大な内部確保が起きる経路(実測: n_max=40 × 4096² で 108 GB)を fail-closed で塞ぐ。| 物理的に不可能な状態も拒否: 偏光度 > 1 の Stokes ベクトル、負の透過率、負の強度、n- | m | が奇数などの不正な Zernike 添字。 |
py -3.11 examples/photoelastic_roundtrip.pytable を入力に取れる)abcd_matrix · wavefront_stats · sfr_from_edge · paraxial_trace · seidel_coefficients · spot_stats · tolerance_analysis · wavefront_from_opd
photoelastic)brazilian_disc_stress · kirsch_plate_stress · principal_stress · retardation_from_birefringence · photoelastic_retardation · retardation_convert · cubic_photoelastic_birefringence · silicon_piezo_optic_coefficients
Provenance: photoelastic.py — OPTICS operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.