Back to results
US 12,279,751 B2Granted
Image fiber, endoscope having image fiber, and endoscope system having endoscope
AssigneeFujikura Ltd.
InventorsMasami Miyachi, Manabu Kudo
Life of this patent
Estimating the term…
Abstract
An image fiber includes: a plurality of cores; a cladding that integrally encloses the plurality of cores; a light guide fiber that propagates illumination light; and a light guide layer that covers an entire periphery of an external peripheral surface of the cladding and that is in contact with an external peripheral surface of the light guide fiber. The light guide layer is capable of propagating the illumination light.
Claims14
An image fiber comprising:
- a plurality of cores;
- a cladding that integrally encloses the plurality of cores;
- a light guide fiber that propagates illumination light;
- and
- a light guide layer that covers an entire periphery of an external peripheral surface of the cladding and that is in contact with an external peripheral surface of the light guide fiber, wherein
- the light guide layer propagates the illumination light from the light guide fiber,
- the light guide layer includes a cover layer made of resin,
- a refractive index of the cover layer is higher than a refractive index of the cladding and is equal to or higher than a refractive index of the light guide fiber, and
- the light guide fiber is at least partially disposed inside of the cover layer along a longitudinal direction of the light guide layer.
6 more elements
An image fiber comprising:
- a plurality of cores;
- a cladding that integrally encloses the plurality of cores;
- a light guide fiber that propagates illumination light;
- and
- a light guide layer that covers an entire periphery of an external peripheral surface of the cladding and that is in contact with an external peripheral surface of the light guide fiber, wherein
- the light guide layer propagates the illumination light from the light guide fiber,
- the light guide layer includes a quartz layer having a refractive index higher than the refractive index of the cladding and equal to or higher than the refractive index of the light guide fiber, and
- the light guide fiber is at least partially disposed on an external peripheral surface of the quartz layer along a longitudinal direction of the light guide layer.
5 more elements
Dependencies are inferred from the claim text.