colour.sd_multi_leds

colour.sd_multi_leds(peak_wavelengths: ArrayLike, shape: SpectralShape = SPECTRAL_SHAPE_DEFAULT, method: Literal['Ohno 2005'] | str = 'Ohno 2005', **kwargs: Any) → SpectralDistribution

Generate a multi-LED spectral distribution with the specified spectral shape at specified peak wavelengths.

Parameters:

• peak_wavelengths (ArrayLike) – Wavelengths at which the multi-LED spectral distribution will peak, i.e., the peak wavelengths for each generated single LED spectral distribution.

• shape (SpectralShape) – Spectral shape used to create the spectral distribution.

• method (Literal['Ohno 2005'] | str) – Computation method.

• kwargs (Any) – {colour.colorimetry.sd_multi_leds_Ohno2005()}, See the documentation of the previously listed definition.

Returns:

Multi-LED spectral distribution.

Return type:

colour.SpectralDistribution

Notes

• By default, the spectral distribution will use the shape specified by colour.SPECTRAL_SHAPE_DEFAULT attribute.

References

[Ohn05], [OD08]

Examples

>>> sd = sd_multi_leds(
...     np.array([457, 530, 615]),
...     half_spectral_widths=np.array([20, 30, 20]),
...     peak_power_ratios=np.array([0.731, 1.000, 1.660]),
... )
>>> sd.shape
SpectralShape(360.0, 780.0, 1.0)
>>> sd[500]
0.1295132...