Abstract: An objective of the present application is to provide an improved lighting device comprising a module for enabling wireless connectivity. The invention provides a lighting device comprising a light source, a housing and a module for enabling wireless connectivity of the lighting device, wherein the module comprises: an enclosure having a first main wall opposite to a second main wall; an antenna for wireless communication, wherein the antenna is contained within the enclosure, wherein the antenna is adjacent to the first main wall; a controller in connection with said antenna for enabling the wireless connectivity of the lighting device; mounting means arranged for mounting the module to the housing in a first position wherein the first main wall abuts the housing, or in a second position wherein the second main wall abuts the housing.

Abstract: A method for the production of a light emitting device is provided, comprising providing at least one LED 10 and at least one optical element 13; arranging a bonding material 12, comprising a stable colloidal sol of inorganic metal oxide nanoparticles dispersed in a liquid medium, on a light emitting surface 11 of said at least one LED and/or on a surface of said at least one optical element 13; (c) placing said at least one optical element 13 on the light emitting surface 11 of said at least one LED 10 with said bonding material 12 there between to form at least one assembly; and curing said bonding material to form an inorganic bond. The bonding material may be cured at temperatures not detrimental to the LED, while the resulting bond is photo-thermally stable.