Method and device for wavelength shifted imaging
First Claim
1. A micro-camera catheter device, comprising:
- at least one light source disposed on a distal end of a catheter, said light source capable of propagating a predetermined wavelength of light with a wavelength between approximately 1000 nanometers and approximately 2000 nanometers onto a target;
a circular lens system disposed on the distal end of the catheter, said lens system configured to receive light reflected from the target;
a circular non-linear optical media disposed directly behind and in contact with the lens system, the non-linear optical media configured to modify reduce the wavelength of the light reflected from the target to below approximately 700 nanometers; and
a circular linear optical disposed directly behind and in contact with the circular non-linear optical media; and
a silicon-based solid state imaging device disposed behind the linear optical media, said silicon-based solid state imaging device configured to receive light from the linear optical media, wherein the outer circumference of the circular lens, circular non-linear optical media and linear optical media are substantially the same, wherein the non-linear optical media comprises a non-linear optical crystal.
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Accused Products
Abstract
A micro-camera catheter device is disclosed comprising at least one light source disposed on a distal end of a catheter. The light source is capable of propagating a predetermined wavelength of light with a wavelength between approximately 1000 nanometers and approximately 2000 nanometers onto a target. The device further comprises a lens system disposed on the distal end of the catheter, said lens system configured to receive light reflected from the target. The device further comprises a non-linear optical media disposed behind the lens system configured to modify the light reflected from the target. The device also comprises a silicon-based solid state imaging device disposed behind the non-linear optical media configured to receive light from the non-linear optical media.
404 Citations
21 Claims
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1. A micro-camera catheter device, comprising:
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at least one light source disposed on a distal end of a catheter, said light source capable of propagating a predetermined wavelength of light with a wavelength between approximately 1000 nanometers and approximately 2000 nanometers onto a target; a circular lens system disposed on the distal end of the catheter, said lens system configured to receive light reflected from the target; a circular non-linear optical media disposed directly behind and in contact with the lens system, the non-linear optical media configured to modify reduce the wavelength of the light reflected from the target to below approximately 700 nanometers; and a circular linear optical disposed directly behind and in contact with the circular non-linear optical media; and a silicon-based solid state imaging device disposed behind the linear optical media, said silicon-based solid state imaging device configured to receive light from the linear optical media, wherein the outer circumference of the circular lens, circular non-linear optical media and linear optical media are substantially the same, wherein the non-linear optical media comprises a non-linear optical crystal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A micro-camera catheter device, comprising:
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a plurality of light sources disposed on a distal end of a catheter, said light sources capable of propagating a predetermined wavelength of light with a wavelength between approximately 1000 nanometers and approximately 2000 nanometers onto a target; a GRIN lens disposed on the distal end of the catheter, said lens system configured to receive light reflected from the target; a non-linear optical crystal film deposited on a proximal end of the GRIN lens, the film having an outer circumference substantially the same as an outer circumference of the GRIN lens, said non-linear optical crystal film being configured to reduce the wavelength of the light reflected from the target to below approximately 700 nanometers; a filter media having an outer circumference substantially the same as the outer circumference of the non-linear optical crystal film disposed directly behind the non-linear optical crystal film, said filter media being configured to selectively pass predetermined wavelengths of light and reflect predetermined wavelengths of light; and a silicon-based solid state imaging device optically coupled to the filter media. - View Dependent Claims (10, 11)
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12. A method of imaging tissues using non-linear optical media, comprising:
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propagating a first predetermined wavelength of light onto a target tissue, said predetermined wavelength of light being greater than 1000 nanometers; receiving the predetermined wavelength of light reflected from the target tissue into and through a first lens system; receiving the predetermined wavelength of light from the first lens system into and through a non-linear optical media disposed directly behind and in direct contact with the first lens system, the non-linear optical media being configured to reduce the wavelength of light that passed through the first lens system;
wherein the non-linear optical media comprises a non-linear optical crystal;reducing the wavelength of the predetermined wavelength of light to below approximately 700 nanometers; receiving at least a portion of the modified wavelength of light onto a silicon-based solid state imaging device; simultaneous to the propagation of the first wavelength of light, propagating a second wavelength of light onto the target tissue, wherein said second wavelength of light is less than approximately 700 nanometers; receiving, said second wavelength of light through a second lens system; generating a first image from the first wavelength of light; and generating a second image from the second wavelength of light. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A micro-camera catheter device, comprising:
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at least one light source disposed on a distal end of a catheter, said light source capable of propagating a plurality of predetermined wavelengths of light between approximately less than 700 nanometers and approximately 2000 nanometers onto a target at different time intervals; a first lens system disposed on the distal end of the catheter, said first lens system configured to receive light reflected from the target; a non-linear optical media disposed directly behind and in direct contact with the first lens system, the non-linear optical media configured to increase the frequency of the light reflected from the target, wherein the non-linear optical media comprises a non-linear optical crystal; a silicon-based solid state imaging device disposed behind the non-linear optical media, said silicon-based solid state imaging device configured to receive light from the non-linear optical media; a second lens system disposed on the distal end of the catheter, said second lens system configured to receive light reflected from the target; a second silicon-based solid state imaging device disposed behind the second lens system; and a processor and a display configured to display the image resulting from the light reflected from the target onto the first and second silicon-based solid state imaging devices. - View Dependent Claims (20)
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21. A micro-camera catheter device, comprising:
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a first layer including a solid state imaging device having an imaging array disposed on a top surface of the solid state imaging device; a second layer disposed on top of the first layer comprising a filter media configured to selectively pass certain wavelengths of light and reflect other wavelengths of light, wherein the filter media comprises an anti-reflective coating with alternating layers of contrasting reflective index; a third layer disposed on top of the second layer comprising a two non-linear optical devices placed in series configured to increase the frequency of light passing through a lens system; a fourth layer disposed on top of the third layer comprising the lens system; and a light source configured to propagate different wavelengths of light at different time intervals.
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Specification