Eccentric Reflective Surface for Wire Light Irradiation
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Solution Overview
Problem
Conventional light irradiation devices have low light efficiency when irradiating wire members, as the light emitted is not effectively utilized due to the geometry of the reflective surface and light source configuration.
Innovation Solution
A light irradiation device with a reflective surface having a substantially arc shape and a light source positioned to face the reflective surface along its optical axis, where the center of the arc is eccentric relative to the insertion path of the wire member, enhancing light distribution and efficiency by adjusting the position of the reflective surface and light source to optimize light reflection and irradiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the wire member is disposed at the center of the reflective surface, then the structure is simple and symmetric, but the light efficiency is low and light irradiation is ineffective
Solution Approach 1:
The patent applies asymmetry by intentionally positioning the wire member (optical fiber) off-center relative to the reflective surface. Specifically, the optical fiber is disposed at a position where its outer peripheral surface is within a range from 0.05 times to 0.4 times the radius of the reflective surface from the center, creating an asymmetric configuration that optimizes light reflection paths and significantly improves light efficiency compared to centered placement
2Adaptability or versatility
If the light source emits light toward the wire member in the circumferential direction, then the light source can be positioned around the wire, but the light utilization ratio is low and much light does not reach the wire member
Solution Approach 1:
The patent applies local quality by defining specific optimal positioning parameters for the light source relative to the optical fiber. The light source is positioned at a distance of 0.05 to 0.4 times the radius of the reflective surface from the optical fiber's outer peripheral surface, creating locally optimized light emission zones that maximize light capture by the fiber while maintaining positioning flexibility
3Device complexity
If a conventional reflective surface configuration is used, then the device structure is simple, but uniform light irradiation of the wire member cannot be achieved
Solution Approach 1:
The patent applies dimensionality change by optimizing the spatial relationships between components in multiple dimensions simultaneously. The specific positioning of the optical fiber (0.05-0.4 times radius from center) and light source (0.05-0.4 times radius from fiber surface) creates optimized three-dimensional light paths that achieve uniform circumferential irradiation while maintaining relatively simple device structure
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
The configuration significantly improves light efficiency by ensuring uniform irradiation of the wire member, increasing the amount of light that actually reaches the wire member and reducing losses, thereby enhancing the overall light utilization ratio.
Implementation Method 1
a reflective surface which is disposed in a concave inner surface formed to have a substantially arc shape
Data Source
AI summary
A light irradiation device includes at least one irradiation unit including a reflective surface which is disposed in a concave inner surface formed to have a substantially arc shape and into which a wire member is inserted, and a light source which is configured to emit light toward the wire member and is disposed so as to face the reflective surface in a direction of an optical axis of the emitted light, and an insertion portion configured to interiorly form an insertion path for inserting the wire member into the reflective surface. The reflective surface is disposed such that a center of the substantially arc shape is eccentric with respect to a center of the insertion path.