Light-emitting diode (LED) devices and more particularly lens arrays in LED packages are disclosed. Lens arrays include one or more lens shapes positioned to receive light from LED chip arrays. Individual lenses of lens arrays may be separately formed in LED packages on various surfaces, such as on top surfaces of encapsulant layers that cover LED chip arrays. Shapes of individual lenses may be tailored to provide various emission patterns. Exemplary lens arrays in LED packages include all lenses of a same shape or variably shaped lenses within a same lens array. Differently shaped lenses may be arranged over LED chips of a same serially connected string so that emission patterns and/or colors may be dynamically adjusted during operation.

An LED bulb includes a bulb body, with a first set of components composed of an NPR material, and a second set of components composed of a PPR material. The first set of components include thermal encapsulants, thermal pottants, a heat sink, thermal interface materials, and LED chip encapsulants. The second set of components include a socket, a base, an LED driver, conformal coating, adhesives, reflector materials, an LED module, LEDs, primary optics, and secondary optics. The incorporation of NPR materials into LED bulb components can provide various advantages over LED bulbs that include only positive Poisson's ratio (PPR) materials. For example, NPR materials can facilitate improved heat dissipation from, and/or cooling of, integrated components of LED bulbs, among other benefits.

A system for use with a billiards table may include addressable multi-color LED strips, a controller and a user device. The controller may be configured to send signals through the LED strips to control which one or more pixels are activated and one or more colors of light to be produced by corresponding one or more LEDs for the one or more activated pixels. The user device may communicate with the controller and may implement a program configured to enable a user of the user device to send lighting commands to the controller during gameplay. The lighting commands may indicate user-desired changes to lighting provided by the addressable multi-color LED strips. The controller may send corresponding signals to the addressable multi-color LED light strips to implement the changes to the lighting.

The swimming pool fountain lamp includes a main body, a water spraying structure and a light emitting structure. The water spraying structure and the light emitting structure are both arranged in the main body. The water spraying structure sprays water in the main body to the outside of the main body. The light emitting structure is configured for illuminating a water column and a swimming pool. The water spraying structure sprays water in the main body to the outside of the main body. Light emitted by the light emitting structure is transmitted to the outside of the main body through an upper housing and a lower housing, illuminating the water column sprayed from the main body and the swimming pool. The water spraying structure sucks water in the swimming pool into the main body and sprays water out of the main body through an internal structure of the main body.