### LAB color space

 La*b* system was recommended in 1976. This is a standard, approximately uniform color space. The CIELAB is organized in a cube form. $$L^*=116 (Y/Y_n)^{1/3}-16$$ $$a^*=500\left[(X/X_n)^{1/3}-(Y/Y_n)^{1/3}\right]$$ $$b^*=500\left[(Y/Y_n)^{1/3}-(Z/Z_n)^{1/3}\right]$$ CIE H°LC diagram displays positions of hue and chroma correlates in a polar coordinate system:  $$h_{ab}=\displaystyle\arctan\frac{b^*}{a^*}$$  $$C_{ab}=\sqrt{(a^*)^2+(b^*)^2}$$

### Easy to start

OptiLayer provides user-friendly interface and a variety of examples allowing even a beginner to effectively start to design and characterize optical coatings.        Read more...

### Docs / Support

Comprehensive manual in PDF format and e-mail support help you at each step of your work with OptiLayer.