Color-speckle assessment in multi-primary laser-projection systems based on a 3D J_za_zb_z color space

We propose and demonstrate a color-speckle assessment method based on a threedimensional J(z)a(z)b(z) color space, which is appropriate for both three-primary and multi-primary systems. In the proposed scheme, new physical quantities are defined to describe the color-speckle characteristics, which provides a general and intuitive color-speckle evaluation for different laser projectors. Experimental verification is also performed using three-primary and six-primary laser projectors. The simulation and measurement results are consistent. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement