Emitter assembly for a lighting device

A light-generation module comprising:

• a substrate;
• and
• an emitter assembly mounted to the substrate, the emitter assembly comprising:
• one or more emitters mounted to the substrate;
• a barrier located on a surface of the substrate and surrounding the one or more emitters, the barrier and the surface of the substrate defining a recess;
• a first dome portion formed on the surface of the substrate and located within the recess defined by the barrier and the surface of the substrate, the first dome portion encapsulating the one or more emitters, the first dome portion made of a first material that is optically transmissive;
• and
• a second dome portion located above the first dome portion, such that the first dome portion is located between the second dome portion and the substrate, the second dome portion having a shape configured to direct light from the one or more emitters, the second dome portion made of a second material that is optically transmissive;
• wherein the second dome portion defines an interface surface proximate the first dome portion, and wherein the second dome portion comprises one or more support members that extend from the interface surface of the second dome portion into the recess formed by the barrier and the surface of the substrate, such that the one or more support members contact the substrate in the recess formed by the barrier and the surface of the substrate, wherein each support member of the one or more support members comprises an outer edge that contacts the barrier, and wherein the second dome portion further comprises one or more ledge portions that are supported on the barrier.

A light-generation module comprising:

• a substrate;
• and
• an emitter assembly mounted to the substrate, the emitter assembly comprising:
• one or more emitters mounted to the substrate;
• a barrier located on a surface of the substrate and surrounding the one or more emitters, the barrier and the surface of the substrate defining a recess;
• a first dome portion formed on the surface of the substrate and located within the recess defined by the barrier and the surface of the substrate, the first dome portion encapsulating the one or more emitters, the first dome portion made of a first material that is optically transmissive;
• and
• a second dome portion located above the first dome portion, such that the first dome portion is located between the second dome portion and the substrate, the second dome portion having a shape configured to direct light from the one or more emitters, the second dome portion made of a second material that is optically transmissive and defining an interface surface that is proximate an interface surface of the first dome portion;
• wherein the second dome portion comprises one or more support members that contact the substrate and reside within the recess, and wherein the second dome portion contacts an upper surface of the barrier.