US 7,802,901 B2 · LED multi-chip lighting units and related methods

Abstract

Light emitting device multi-chip lighting units and related methods are disclosed. According to one aspect, a white LED chip, a red LED chip, a blue LED chip, and a green LED chip are operably configured to a semiconductor substrate positioned within a lighting unit housing. The lighting unit can therefore provide a white light beam, a red light beam, a green light beam, and a blue light beam. The LED chips can be configured on the substrate such that the emitted light beams can overlap. Thus, in addition to the white LED chip providing a white light beam, the red LED chip, the blue LED chip, and the green LED chip can be actuated simultaneously with the white LED chip to combine and emit a more powerful and intense white light beam. Additionally, the red LED chip, the blue LED chip and the green LED chip can be actuated simultaneously to emit an intermediary intensity white light beam from the lighting unit.

Claims32

Dependent claims

A portable LED lighting unit for providing a plurality of individually selectable colored beams, the lighting unit comprising:

a housing;
a power supply source carried by the housing;
and
a single multi-chip lamp source centered within the housing and operably configured to the power supply source, the multi-chip lamp source comprising:
a substrate;
at least one white light emitting diode (LED) chip operably configured to the substrate to emit a substantially white light beam;
at least one red LED chip operably configured to the substrate to emit a substantially red light beam;
at least one blue LED chip operably configured to the substrate to emit a substantially blue light beam;
and
at least one green LED chip operably configured to the substrate to emit a substantially green light beam;
and
wherein the at least one white LED chip, the at least one red LED chip, the at least one blue LED chip, and the at least one green LED chip are configured to be actuatable to create multiple colored light beams and the LED chips are positioned on the substrate such that an emitted light beam remains concentric without shifting regardless of the chip or chips emitting the light beam;
and
a lens on the substrate over the at least one white LED chip, the at least one red LED chip, the at least one green LED chip and the at least one blue LED chip to thereby encase each chip within the lens.

11 more elements

A portable LED lighting unit for providing a plurality of individually selectable colored beams without the use of filters, the lighting unit comprising:

a housing;
a power supply source attached to the housing;
and
a single multi-chip lamp source centered within the housing and operably configured to the power source, the multi-chip lamp source comprising:
a substrate having a first side;
at least one white light emitting diode (LED) chip operably configured to the first side of the substrate to provide a substantially white light beam;
at least one red LED chip operably configured to the first side of the substrate to emit a substantially red light beam;
at least one blue LED chip operably configured to the first side of the substrate to emit a substantially blue light beam;
at least one green LED chip operably configured to the first side of the substrate to emit a substantially green light beam;
and
a lens positioned over the first side of the substrate and the lens positioned above the at least one white LED chip, the at least one red LED chip, the at least one blue LED chip and the at least one green LED chip to thereby encase each chip therewithin;
and
wherein the at least one white LED chip, the at least one red LED chip, the at least one blue LED chip, and the at least one green LED chip are configured to be actuatable to create multiple colored light beams and the LED chips are positioned on the substrate such that an emitted light beam remains concentric without shifting regardless of the chip or chips emitting the light beam.

10 more elements

A method of forming a portable LED lighting unit for providing a plurality of individually selectable colored beams without the use of filters, the method comprising:

providing a housing;
providing a power supply source that is carried by the housing;
and
configuring a single multi-chip lamp source to be centered within the housing and operably connected to the power source, the multi-chip lamp source comprising:
a substrate;
at least one white light emitting diode (LED) chip configured to the substrate such that the at least one white LED chip is configured to emit a substantially white light;
at least one red LED chip configured to the substrate, the at least one red LED chip configured to emit a substantially red light beam;
at least one blue LED chip configured to the substrate, the at least one blue LED chip configured to emit a substantially blue light beam;
and
at least one green LED chip configured to the substrate, the at least one green LED chip configured to emit a substantially green light beam;
a lens on the substrate over the at least one white LED chip, the at least one red LED chip, the at least one green LED chip and the at least one blue LED chip to thereby encase each chip within the lens;
and
wherein the at least one white LED chip, the at least one red LED chip, the at least one blue LED chip, and the at least one green LED chip are configured to be actuatable to create multiple colored light beams and the LED chips are positioned on the substrate such that an emitted light beam remains concentric without shifting regardless of the chip or chips emitting the light beam.

10 more elements

Dependencies are inferred from the claim text.

LED multi-chip lighting units and related methods

Life of this patent

LED multi-chip lighting units and related methods

Life of this patent

Abstract

Claims32