illumination opnormalmap × table → image2dimport fullseye as fs; fs.ledger.solid_angle_render(normals, light, view_na=0.1, roughness_deg=0.0, f0=0.9, diffuse_albedo=0.0, n_samples=64, seed=0) (実装を直接呼ぶなら import illumdesign; illumdesign.solid_angle_render(normals, light, view_na=0.1, roughness_deg=0.0, f0=0.9, diffuse_albedo=0.0, n_samples=64, seed=0)、台帳から引くなら opsoptics.get("solid_angle_render"))Image of a normal map under a cone light through a lens of NA view_na (image2d).
normals: (H, W, 3) surface normals in camera coordinates (+z toward the
camera; zero-length = background, rendered 0) — e.g. from a height map’s
gradient, metalfinish.micro_normals (hairline / turning marks) or
metalfinish.blast_normals (satin). light: :func:solid_angle_light.
Every pixel is viewed along +z with the same object-side cone (a
telecentric camera) and lit by the same cone (the far-field light), so the
image is a function of the local normal only:
B = F · share_of_pupil_lit + ρ · sin²α · cos γ
The specular share uses n_samples rays over the narrower cone (the
pupil, uniform in direction cosines, or the source cap; the same
quadrature for every pixel, so there is no pixel noise),
each mirrored by the normal tilted by a micro-facet slope drawn once per
ray (roughness_deg σ, a scalar or an (H, W) map for satin patches);
F = f0 (Fresnel at near-normal incidence, a constant over the small
angles involved); the diffuse body term with albedo diffuse_albedo uses
the closed form of the projected solid angle of a uniform cap
π sin²α cos γ (γ = angle between the normal and the cone axis; exact
while the cap stays above the facet’s horizon) divided by π. Values are
relative to the source radiance (1 = mirror, full pupil, F = 1). With few
samples a partial overlap is quantised to 1/n_samples.
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/poc_illumination_cone_vs_na.pyimage2d を入力に取れる)fraunhofer_pattern · pupil_psf · pupil_blur · psf_to_mtf · edge_spread · veiling_glare_index · emva_pair_statistics · emva_defect_pixels
illumination)light_source · irradiance_map · illumination_uniformity · defect_contrast · lighting_sweep · illumination_design · solid_angle_light · solid_angle_boundaries
Provenance: illumdesign.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.