Arc-Configured UV Light Illumination for Uniform Drying
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional UV light illuminating apparatuses struggle to maintain uniform irradiation intensity and distribution on deformable target objects, such as paper, during printing, leading to non-uniform ink drying due to light convergence issues.
Innovation Solution
A light illuminating apparatus with multiple light emitting units arranged in an arc configuration, each unit having a substrate with LEDs and optical devices to shape light into a line shape with a predetermined divergence angle, ensuring overlapping irradiation intensity distributions within a specific range, thereby maintaining consistent irradiation across a working distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If light sources are arranged in a straight line to simplify the structure, then the device complexity is reduced, but the irradiation intensity distribution becomes non-uniform when the target object deforms
Solution Approach 1:
The light sources are arranged in an arc shape rather than a straight line, with the arc center positioned at the irradiation position. This curved arrangement ensures that light from each source converges uniformly on the target object even when it deforms, maintaining consistent irradiation intensity distribution without requiring complex adjustment mechanisms
2Manufacturing precision
If optical devices are used to shape light into a line with predetermined divergence angle, then the irradiation intensity distribution is improved, but the device complexity increases
Solution Approach 1:
Optical devices with curved surfaces are employed to shape the light into a line with a predetermined divergence angle. The curved optical surfaces efficiently distribute light uniformly across the target object, achieving precise irradiation control while maintaining reasonable structural simplicity through geometric optimization
3Area of stationary object
If multiple light emitting units are arranged to cover a wide area, then the irradiation coverage is improved, but the uniformity of irradiation intensity decreases
Solution Approach 1:
Multiple light emitting units are positioned along an arc with their centers aligned at the irradiation position. This arc configuration ensures that light from all units converges uniformly on the target object, achieving both wide coverage and consistent irradiation intensity distribution across the entire irradiated area
Solution Approach 2:
Each light emitting unit is equipped with optical devices tailored to its specific position on the arc, shaping its light output to contribute uniformly to the overall irradiation pattern. This localized optimization ensures that every unit contributes equally to the uniform intensity distribution across the coverage area
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 apparatus achieves uniform irradiation intensity and distribution of UV light across a predetermined range, even when the target object deforms, ensuring stable ink drying without non-uniformity.
Implementation Method 1
a plurality of light sources arranged at a predetermined interval along the first direction on the substrate and placed such that a direction of an optical axis is matched to a direction perpendicular to the substrate surface
Implementation Method 2
a plurality of optical devices placed on optical paths of each of the light sources to shape light from each of the light sources into light with a predetermined divergence angle
Data Source
AI summary
Provided is a light illuminating apparatus for irradiating light of a line shape extending in a first direction and having a line width in a second direction. The light illuminating apparatus includes light emitting units, each including a substrate, light sources arranged at an interval along the first direction on the substrate and placed such that a direction of an optical axis is matched to a direction perpendicular to the substrate surface, and optical devices placed on optical paths of each light source to shape light from each light source into light with a predetermined divergence angle, wherein the light emitting units are arranged on an arc having its center at the irradiation position when viewed in the first direction, and an irradiation width in the second direction of light from the light emitting units is approximately equal within a preset range in a direction perpendicular to the irradiation surface.