Lamp Source Calculator

Calculate blackbody spectral radiance and étendue-limited throughput for lamp-based optical systems.

Blackbody Parameters
Wien Displacement
Peak wavelength (λ_max)
905.6nm
Peak wavelength
0.9056µm
Stefan-Boltzmann
Total exitance (M)
5.946e+6W/m²
Spectral Radiance at λ
B_λ at 550 nm
666.7W·m⁻²·sr⁻¹·nm⁻¹
Abridged Optics — Lamp Source Calculator v1.0Uses 2019 SI exact values for h, c, k_B. Étendue assumes circular source and paraxial collection.

All information, equations, and calculations have been compiled and verified to the best of our ability. For mission-critical applications, we recommend independent verification of all values. If you find an error, please let us know.