[특허]Photonic lattice LEDs for ophthalmic illumination

[미국특허] Photonic lattice LEDs for ophthalmic illumination 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-003/10 A61B-003/00
출원번호	US-0903262 (2010-10-13)
등록번호	US-8348430 (2013-01-08)
발명자 / 주소	Artsyukhovich, Alexander
출원인 / 주소	Alcon Research, Ltd.
대리인 / 주소	Ichiye, Keiko
인용정보	피인용 횟수 : 2 인용 특허 : 59

초록

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.

대표청구항 ▼

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; anda controller operable to modulate the red, green, and blue photonic lattice LEDs to change a color of the single beam. 2. The ophthalmic illuminator of claim 1, wherein the optical combiner is an X-prism optical combiner. 3. The ophthalmic illuminator of claim 1, further comprising: a handpiece; anda probe extending from a distal end of the handpiece, wherein a distal portion of the optical fiber extends through the handpiece and into the probe. 4. The ophthalmic illuminator of claim 3, wherein the probe is a stainless steel probe. 5. The ophthalmic illuminator of claim 1, further comprising a plurality of heat sinks operable to sink heat from the red, green, and blue photonic lattice LEDs. 6. The ophthalmic illuminator of claim 1, wherein the lens is an aspheric lens. 7. An ophthalmic illuminator, comprising: 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; anda controller operable to modulate the first and second photonic lattice LEDs to change a color of the single beam. 8. The ophthalmic illuminator of claim 7, wherein the first photonic lattice LED produces a light beam having a first wavelength and the second photonic lattice LED produces a light beam having a second wavelength, and wherein the single beam is a white beam as a result of the first and second wavelengths. 9. The ophthalmic illuminator of claim 8, wherein the first wavelength corresponds to yellow light and the second wavelength corresponds to violet light. 10. The ophthalmic illuminator of claim 8, wherein the first wavelength corresponds to turquoise light and the second wavelength corresponds to red light. 11. The ophthalmic illuminator of claim 7, wherein the optical combiner is a dichroic mirror. 12. The ophthalmic illuminator of claim 7, wherein the lens is an aspheric lens. 13. The ophthalmic illuminator of claim 7, further comprising: a handpiece; anda probe extending from a distal end of the handpiece, wherein a distal portion of the optical fiber extends through the handpiece and into the probe. 14. A method of providing illumination to the interior of an eye, the method comprising: 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 beamcombining 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; andmodulating the respective currents to change a color of the single light beam. 15. The method of claim 14, wherein a first wavelength of light emitted by the first photonic lattice LED and a second wavelength of light emitted by the second photonic lattice LED define a light axis that intersects a white region of a chromaticity graph. 16. The method of claim 14, further comprising modulating the respective currents so that the color of the single light beam lies within the white region. 17. The method of claim 16, wherein the modulation comprises one of pulse width modulation and amplitude modulation.

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[미국특허] Photonic lattice LEDs for ophthalmic illumination 원문보기

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[미국특허] Photonic lattice LEDs for ophthalmic illumination 원문보기

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