Color mixing optics for LED lighting

A multi-color LED lamp comprising:

• an outer reflector having a paraboloidal surface of revolution centered around a center axis and defining a reflector focal point;
• a total inner reflection lens having a concave light entrance surface with a radius of curvature to enable light to enter the total inner reflection lens at a right angle, and the total inner reflection lens having an outer contour with a paraboloidal surface of revolution centered around the center axis and defining a total inner reflection lens focal point;
• wherein the outer contour with a paraboloidal surface of revolution of the total inner reflection lens is held a spaced distance within the outer reflector;
• wherein the reflector focal point is in close proximity to the total inner reflection lens focal point;
• and an LED assembly comprising a plurality of LEDs and being mounted in close proximity to the reflector focal point and the total inner reflection lens focal point;
• wherein the outer reflector reflects a first portion of light emitted by the LED assembly and the concave light entrance of the total inner reflection lens surface receives the remaining portion of the light emitted by the LED assembly.

A method for generating a mixed beam of light by comprising:

• generating light at multiple wavelengths by a an LED assembly comprising a plurality of LEDs and:
• reflecting a first portion of said light by an outer reflector having a paraboloidal surface of revolution centered around a center axis and defining a reflector focal point;
• while reflecting a second receiving the remaining portion of said light forwarded from the plurality of LEDs at a concave light entrance surface of a total inner reflection lens, the remaining portion of said light incident on the concave light entrance surface at an angle relative to the center axis that is less than the first portion of said lightforwarded from the plurality of LEDs, wherein the second portion is reflected from a total inner reflection lens having a concave light entrance surface with includes a surface having a radius of curvature to enable the remaining portion of the light to enter the total inner reflection lens at a right angle, and the total inner reflection lens having an outer contour with a paraboloidal surface of revolution centered around the center axis and defining a total inner reflection lens focal point;
• and
• wherein the reflector focal point is in close proximity to the total inner reflection lens focal point.

A lamp comprising:

• a hollow outer reflector to provide a reflective surface;
• a total inner reflection lens having a concave light entrance surface with a radius of curvature to enable light to enter the total inner reflection lens at a right angle, the total inner reflection lens further having an outer contour, wherein the outer contour is held a spaced distance apart from the reflective surface provided by the hollow outer reflector;
• and
• an assembly configured to emit light, wherein the assembly is mounted within the lamp spaced apart from the concave light entrance surface of the total inner reflection lens;
• wherein the reflective surface reflects a first portion of light emitted by the assembly and the concave light entrance surface of the total inner reflection lens receives the remaining portion of the light emitted by the assembly.

A lamp, comprising:

• a hemispherical lens to receive an array that includes a plurality of different color output light sources;
• a parabolic reflective surface spaced apart from the surface of the hemispherical lens;
• and
• a paraboloidal total inner reflection lens spaced a distance from the parabolic reflective surface, the total inner reflection lens including a planar exit surface and a concave entrance surface spaced a distance apart from the surface of the hemispherical lens;
• wherein the hemispherical lens comprises a planar base portion and a convex lens portion;
• wherein the parabolic reflective surface and the paraboloidal total inner reflection lens share a common focal point;
• and
• wherein the base portion of the hemispherical lens is positioned proximate the common focal point of the parabolic reflective surface and the paraboloidal total inner reflection lens.