I want the light not to be seen in the plane
Need to set specular property of the light to black.
light.specular = new BABYLON.Color3.Black();
Note that this will affect every object in the scene which is receiving that light. So if you want it on one object and not on another, then you can play with the specular property of the material itself
material.specularColor = new BABYLON.Color3.Black();
O my friend thank you very very much,3 hours suffered! Thank you