Abstract: Light sources including one or more light emitting diodes (LEDs) comprise: a primary down converter material on the one or more LEDs; and a roughened down converter material on the one or more LEDs. The down converter material may comprise a polycrystalline ceramic plate of a phosphor material. A method of manufacturing a light source comprises: measuring a baseline color point distribution of a baseline light source, and a primary down converter material in the absence of any laser-modified down converter material; preparing a baseline color point distribution graph; identifying one or more sections of the primary down converter material whose corresponding LEDs contribute to deviating from a tuned color point distribution; and applying a roughening laser treatment to prepare one or more sections of roughened down converter material, and thereby prepare a light source having the tuned color point distribution.

Abstract: Light sources including one or more light emitting diodes (LEDs) comprise a down converter material on the one or more LEDs; and a functional material that is laser-patterned on the down converter material. The functional material may be a distributed Bragg reflector (DBR). a dichroic filter (DCF), a ceramic material, or a powdered phosphor layer. The down converter material may comprise a polycrystalline ceramic plate of a phosphor material. A method of manufacturing a light source comprises: patterning a functional material of a light source comprising one or more light emitting diodes and a phosphor material.

Abstract: A light emitting device comprises at least two semiconductor LEDs arranged in an array with each semiconductor LED comprising a light emitting surface with boundaries defined by a perimeter, a continuous layer comprising a first surface through which light is emitted from the light emitting device during operation and an oppositely positioned second surface disposed on or adjacent to the array and extending over the light emitting surfaces of the semiconductor LEDs, and a plurality of optical isolation structures arranged in the continuous layer in a discontinuous manner along the perimeters of the light emitting surfaces between adjacent LEDs in the array.

Abstract: A light-emitting diode (LED) can have a light-emitting surface that can emit emitted light. A filter, disposed on the light-emitting surface, can be at least partially transmissive in a first area and at least partially reflective in a second area. The first area can direct at least some of the emitted light through the filter to form shaped light that extends over an area corresponding to a shape of a static light pattern. The second area can reflect at least some of the emitted light into the LED through the light-emitting surface. A lens can bring the shaped light to a focus that has the shape of the static light pattern. To increase a contrast of the focus, an absorber, disposed on the second area of the filter, can absorb emitted light that is transmitted through the second area of the filter.

Abstract: A light-emitting diode (LED) can have a light-emitting surface that can emit emitted light. A filter, disposed on the light-emitting surface, can be at least partially transmissive in a first area and at least partially reflective in a second area. The first area can direct at least some of the emitted light through the filter to form shaped light that extends over an area corresponding to a shape of a static light pattern. The second area can reflect at least some of the emitted light into the LED through the light-emitting surface. A lens can bring the shaped light to a focus that has the shape of the static light pattern. To increase a contrast of the focus, an absorber, disposed on the second area of the filter, can absorb emitted light that is transmitted through the second area of the filter.

Abstract: A light emitting diode (LED) device may include an LED die having a first surface on a substrate. A first phosphor layer may be formed on a second surface and sides of the LED die. The second surface may be opposite the first surface. A second phosphor layer may be formed on the first phosphor layer. The second phosphor layer may have a peak emission wavelength (Lpk2) located between a peak emission wavelength of the LED die (LpkD) and a peak emission wavelength of the first phosphor layer (Lpk2).

Abstract: A light emitting diode (LED) device may include an LED die having a first surface on a substrate. A first phosphor layer may be formed on a second surface and sides of the LED die. The second surface may be opposite the first surface. A second phosphor layer may be formed on the first phosphor layer. The second phosphor layer may have a peak emission wavelength (Lpk2) located between a peak emission wavelength of the LED die (LpkD) and a peak emission wavelength of the first phosphor layer (Lpk2).