Endoscope Illumination Substrate With Light-Shielding Crosstalk Control
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Solution Overview
Problem
Crosstalk occurs between white and narrow band light emitting parts in endoscopes, affecting the color tone of endoscopic images.
Innovation Solution
An endoscope illumination substrate is designed with a light-shielding body that prevents crosstalk between multiple light emitting parts, using a laminated structure with a base substrate, light-shielding body, and fluorescent resin to control light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If narrow band light emitting parts and white light emitting parts are disposed alternately circumferentially, then special light observation and normal light observation can be performed, but crosstalk occurs between the light emitting parts causing color tone irregularities in endoscopic images
Solution Approach 1:
A light-shielding body is introduced as an intermediary element between the narrow band light emitting part and the white light emitting part. This light-shielding body blocks stray light from the narrow band emitting part from reaching the fluorescent substance in the white light emitting part, preventing crosstalk while maintaining both observation modes
Solution Approach 2:
The illumination substrate is segmented into distinct functional regions with the light-shielding body creating spatial separation between the narrow band and white light emitting parts. This segmentation allows each light emitting part to operate independently without interfering with the other, eliminating crosstalk
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents crosstalk, improves image quality during special light observation, and ensures wide-angle illumination, enhancing the endoscope's ability to observe a wide visual field without color irregularities.
Implementation Method 1
a combination of a blue light emitting element and a fluorescent substance that is excited by blue light to emit yellow light
Data Source
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AI summary
An endoscope or the like that prevents crosstalk between multiple light-emitting parts is provided. An endoscope comprises: an observation window that is disposed at a distal end of an insertion part; a plurality of first light-emitting parts (519) that are disposed around the observation window; a second light-emitting part (529) that is disposed between the first light-emitting parts (519) and emits light at a bandwidth different from a bandwidth of light emitted by the first light-emitting parts (519); and a light-shielding body (43) that is disposed between one of the first light-emitting parts (519) and the second light-emitting part (529).