AOI 变化导致的 CWL 偏移计算器（适用于光学滤光片）

使用下面的模拟器，您可以计算出不同入射角 (AOI) 下的大致中心波长偏移。
  • AOI 不应大于 45 度
  • 中心波长应在 350 至 10500 纳米之间。
  • 有效折射率与镀膜设计密切相关。
    对于常规涂层设计，您可以假设 ri = 1.5-1.8。
    对于可变AOI涂层设计，您可以假设ri = 2.0 - 2.3。

在哪里：
  • λθ = 入射角为 θθ 时，对应于目标特征的波长
  • λ0 = 垂直入射时目标特征对应的波长。
  • n0 = 入射介质的折射率
  • n <sub>eff</sub> = 光学滤波器的有效折射率
  • θ = 入射角

返回博客

  • How to use this AOI Shift Calculator

    AOI Shift Concept Calculator

    A lightweight browser tool to estimate how a bandpass filter center wavelength shifts with angle of incidence (AOI).

    What this is

    • A conceptual calculator for AOI-dependent center-wavelength shift.
    • A simple learning and planning tool with compact visuals.
    • A static web app (no build step required).

    What this is not

    • Not a final optical design or qualification tool.
    • Not a replacement for measured filter data or full thin-film simulation.

    Use vendor AOI curves and measured data for sign-off decisions.

    Model used

    The calculator uses:

    lambda_theta = lambda_0 * sqrt(1 - (n0 / n_eff)^2 * sin^2(theta))

    Where:

    • lambda_0: center wavelength at normal incidence
    • lambda_theta: center wavelength at AOI theta
    • n0: incident medium index (fixed to air, 1.000)
    • n_eff: effective refractive index of the filter stack

    Input guidance

    • lambda_0 valid range: 193 to 1940 nm
    • theta valid range: 0 to 85 deg
    • n_eff: often approximated in ~1.7 to 2.5 for many dielectric stacks (concept-level use)

    Features

    • Live AOI shift calculation and percentage shift.
    • n_eff presets with labeled approximate stack types.
    • Compact concept visuals:AOI surface-angle diagramconceptual transmission-curve shift view
    • Rounded display values to avoid false precision.

  • Manual for Agent

    Key behavior expectations

    • Keep wavelength input constrained to 193..1940 nm.
    • Keep AOI constrained to 0..85 deg.
    • Keep air as incident medium (n0 = 1.000) unless explicitly requested otherwise.
    • Keep n_eff presets and manual entry behavior intact.
    • Maintain the conceptual visuals:AOI surface-angle viewconceptual transmission-shift view

    Editing guidelines

    • Favor small, focused changes.
    • Keep labels and helper text concise and user-facing.
    • Avoid introducing false precision in output formatting.
    • Keep warnings and assumptions visible in the UI.
    • Update both UI text and logic when changing units, bounds, or formula labels.

    Verification checklist

    After edits, verify:

    1. AOI number field and slider stay synchronized.
    2. n_eff preset selection updates the input value.
    3. Manual n_eff input can override presets.
    4. Results remain rounded and concept-labeled.
    5. Visuals still update on input changes.
    6. No linter errors in changed files.