lensrender optable → tableimport fullseye as fs; fs.ledger.render_scene_through_lens(system, scene=None, sensor=None, pupil_samples=64, wavelengths=None, exposure_s=0.0001, illuminant=None, seed=0, defocus_mm=0.0, oversample=1, pupil_pattern='halton', pupil_uv=None, pupil_jitter=True, focus_mm=None, add_noise=True, output='float', band_nm=None, source_rings=24) -> 'dict' (実装を直接呼ぶなら import lensrender; lensrender.render_scene_through_lens(system, scene=None, sensor=None, pupil_samples=64, wavelengths=None, exposure_s=0.0001, illuminant=None, seed=0, defocus_mm=0.0, oversample=1, pupil_pattern='halton', pupil_uv=None, pupil_jitter=True, focus_mm=None, add_noise=True, output='float', band_nm=None, source_rings=24) -> 'dict'、台帳から引くなら opsoptics.get("render_scene_through_lens"))Photograph a :func:lens_scene through the prescription system: sensor-side ray tracing -> dict.
For every pixel (and oversample x oversample points inside it) and every wavelength, the exit pupil is sampled at
pupil_samples points (Halton or hexapolar, each pixel’s pattern turned by a fixed golden-ratio angle when
pupil_jitter is on, so the noiseless image does not depend on seed), each ray is traced backwards through the lens
(:func:trace_sensor_rays), shaded in the scene (:func:scene_radiance) and weighted by cos^2(theta) / d^2 times the
pupil-sample area: the Monte Carlo estimate of E = integral L cos(theta) d(omega) over the exit pupil
(Kolb, Mitchell & Hanrahan 1995), times (n_image / n_object)^2. Point sources of the scene are added by forward
ray tracing. The spectral irradiance becomes electrons per wavelength,
E dlambda A_pixel t (lambda / hc) QE(lambda), and the sum goes through the shot noise, the dark electrons, the read
noise and the quantiser of lensimage._sensor (add_noise False returns the expected values). sensor is a dict
{"pixel_pitch_um", "size": (rows, cols), "qe", "full_well", "read_noise_e", "dark_e", "bits", "center_mm"} (center_mm moves the window to another point of a larger sensor); wavelengths default to the F, d, C lines
(each band is as wide as the spacing of the list, or band_nm); illuminant is the relative spectral shape of the scene’s lights (pairs
(nm, value)); defocus_mm moves the sensor along the light (positive = away from the lens) and focus_mm puts it at the
paraxial image of an object at that distance (default: the system’s own image plane); oversample subdivides each pixel.
The picture is upright (see the module doc). The table has image (float in 0..1, or uint16 DN with
output="uint16"), image_noiseless, channels / channels_noiseless (one image per wavelength, own noise), electrons_mean and
electrons_per_wavelength, irradiance_W_m2_nm (K, H, W), pupil_transmission (H, W: the share of the pupil that is not
vignetted), the wavelengths and the geometry. Geometric optics only: no diffraction.
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_photograph_through_prescription.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
lensrender)lens_scene · exit_pupil_samples · trace_sensor_rays · scene_radiance · bokeh_shape · render_ghost_overlay · render_compare_prescriptions
Provenance: lensrender.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.