OPTICAL EXAMINATION DEVICE AND FIBER OPTIC STRUCTURE
By using a parallel arrangement of optical fibers with a light-shielding element, the device addresses insertion into thin tubular bodies and improves SN ratio, reducing noise and enhancing detection accuracy.
DE112024003582T5Pending Publication Date: 2026-06-11FURUKAWA ELECTRIC CO LTD
Patent Information
- Application Number
- DE112024003582
- Authority / Receiving Office
- DE · DE
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2026-06-11
AI Technical Summary
Technical Problem
Existing optical examination devices face challenges in inserting into thin tubular bodies like blood vessels and suffer from noise due to Fresnel-reflected light, leading to a low signal-to-noise ratio (SN ratio) when detecting light reflections.
Method used
The device employs a parallel arrangement of a light-emitting optical fiber and a light-receiving optical fiber separated by an opaque light-shielding element, with dimensions equal to or greater than the light-receiving section, to prevent direct light interference and improve SN ratio.
Benefits of technology
Enables insertion into tubular bodies while reducing noise from Fresnel-reflected light, enhancing the SN ratio and improving detection accuracy.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
An optical examination device is provided that can be inserted into a tubular body and can improve the SN ratio when light reflected from an object under investigation is received.The optical inspection device 1 comprises: a light source 23; a light-emitting optical fiber 2, which has a first light-guiding section 22 for transmitting light emitted by the light source 23 and a first light-emitting section 21 for irradiating an object to be detected with the light transmitted through the first light-guiding section 22 as irradiation light; a light-receiving optical fiber 3, which has a first light-receiving section 31 for receiving reflected light due to the reflection of the irradiation light by the object to be detected and a second light-guiding section 32 for transmitting the reflected light received by the first light-receiving section 31; and a light-sensing unit 33 for detecting the reflected light that has passed through the second light-guiding section 32.The first light-emitting section 21 and the first light-receiving section 31 are spaced apart from each other with an intervening light-shielding element 4 made of an opaque material, thereby forming a fiber optic structure 10.
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Citation Information
Patent Citations
Optical fiber probe for laser rheometer
JP1998118039A
Detection of balloon catheter tissue contact using optical measurement
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