Photonic lattice LEDs for ophthalmic illumination
First Claim
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1. An ophthalmic illuminator, comprising:
- a red photonic lattice LED;
a blue photonic lattice LED;
a green photonic lattice LED;
an optical combiner operable to combine light beams from the red, blue, and green photonic lattice LEDs into a single beam;
a lens;
an optical fiber, wherein the lens is operable to focus the single beam onto a proximal end of the optical fiber; and
a controller operable to modulate the red, green, and blue photonic lattice LEDs to change a color of the single beam.
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Abstract
Photonic lattice sources drive an optical fiber in an ophthalmic illuminator to illuminate the interior of an eye. To produce white light, an RGB combination of photonic lattice LEDs may be used. Alternatively, a bichromatic combination of photonic lattice LEDs produce white light.
137 Citations
17 Claims
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1. An ophthalmic illuminator, comprising:
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a red photonic lattice LED; a blue photonic lattice LED; a green photonic lattice LED; an optical combiner operable to combine light beams from the red, blue, and green photonic lattice LEDs into a single beam; a lens; an optical fiber, wherein the lens is operable to focus the single beam onto a proximal end of the optical fiber; and a controller operable to modulate the red, green, and blue photonic lattice LEDs to change a color of the single beam. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An ophthalmic illuminator, comprising:
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a first photonic lattice LED; a second photonic lattice LED; an optical combiner operable to combine light beams from the first and second photonic lattice LEDs into a single beam; a lens; an optical fiber, wherein the lens is operable to focus the single beam onto a proximal end of the optical fiber; and a controller operable to modulate the first and second photonic lattice LEDs to change a color of the single beam. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method of providing illumination to the interior of an eye, the method comprising:
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providing a first photonic lattice LED and a second photonic lattice LED; driving the first and second photonic lattice LEDs with respective currents so that each LED produces a light beam combining the light beams from the first and second photonic lattice LEDs into a single light beam; focusing the single light beam onto a proximal end of an optical fiber; transmitting light from a distal end of the optical fiber to illuminate the interior of the eye; and modulating the respective currents to change a color of the single light beam. - View Dependent Claims (15, 16, 17)
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Specification