Figure 4: Spherical Coordinates.
https://www.led-professional.com/media/technology_optics_microstructured-optics-for-led-applications_microstruct4-jpg/view
https://www.led-professional.com/media/technology_optics_microstructured-optics-for-led-applications_microstruct4-jpg/@@images/image-1200-d9bc57833920225f9fd06a2a560bdd58.jpeg
Figure 4: Spherical Coordinates.
Type
image/jpeg
Dimension
849x741
