Changing LED light output distribution through coating configuration

A lighting instrument, comprising:

• a recessed light fixture that includes:
• a plurality of light-emitting diode (LED) devices located on a board;
• a diffuser cap housing the LED devices therein, wherein the diffuser cap has a curved shape such that the LED devices are collectively encircled by the diffuser cap and the board, and wherein the diffuser cap includes a plurality of coating regions, and wherein each coating region is coated by a film containing white particles operable to reflect and diffuse light emitted by the LED devices, and wherein the film in each coating region has a different white particle concentration level;
• and
• a cover tube inside which the diffuser cap is disposed, wherein the cover tube is coated with a layer that contains further white particles, and wherein the layer includes one or more regions having different concentrations of the further white particles.

A method of manufacturing a lighting instrument, comprising:

• manufacturing a diffuser cap having white particles mixed therein, the white particles being operable to reflect and diffuse light, wherein the diffuser cap has a curved shape;
• applying a first coating layer on a first region of the diffuser cap, the first coating layer having a first concentration level of white particles;
• applying a second coating layer on a second region of the diffuser cap, the second coating layer having a second concentration level of white particles different from the first concentration level;
• placing the diffuser cap on a substrate having one or more light-emitting diode (LED) devices disposed thereon, such that the one or more LED devices are at least partially circumferentially covered by the diffuser cap;
• and
• placing a cover tube over the diffuser cap such that the diffuser cap is housed within the cover tube, wherein the cover tube is coated with a film containing white particles.