LED Light Guide with Inclined Planes for Uniform Manuscript Illumination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional optical irradiation apparatuses face challenges in efficiently irradiating a manuscript with evenly intense light using a light-emitting diode (LED) as a light source, due to high manufacturing costs and energy consumption, while maintaining sufficient light intensity across the width of the manuscript.
Innovation Solution
The apparatus employs a light guide made of transparent material with an inclined connecting plane configuration, allowing the LED to radially irradiate light that is efficiently guided to the exit plane, preventing premature exit and enhancing light intensity on the manuscript, while reducing manufacturing costs through a resin mold process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a light emitting diode (LED) is used as the light source, then power consumption and calorific value are reduced, but optical irradiation intensity becomes insufficient
Solution Approach 1:
A light guide is introduced as an intermediary component between the LED and the manuscript. The light guide collects radially emitted light from the LED and guides it to irradiate the manuscript, thereby concentrating the light from the low-power LED source to achieve sufficient illumination intensity.
Solution Approach 2:
The light guide changes the spatial distribution parameters of the light. By transforming the radial light distribution from the LED into a directed beam that covers the manuscript width, the light intensity is concentrated where needed while maintaining the low power consumption of the LED.
2Illumination intensity
If the light guide is designed to concentrate radial light from LED to narrow domain, then light intensity at target portion is increased, but manufacturing complexity increases
Solution Approach 1:
The light guide employs a curved or inclined connecting plane configuration instead of simple flat surfaces. This curvature is specifically designed to redirect radially emitted light from the LED to concentrate it onto the narrow domain of the manuscript, achieving high light intensity while the curved geometry can be manufactured using standard resin mold processes.
3Productivity
If connecting planes are inclined to prevent light from exiting prematurely, then light is effectively led to exit plane, but manufacturing precision requirements increase
Solution Approach 1:
The light guide uses specifically designed inclination angles for its connecting planes that optimize light guidance while remaining manufacturable. By carefully selecting these angular parameters, the design achieves effective light concentration and prevents premature exit without requiring excessively tight manufacturing tolerances.
Solution Approach 2:
Different portions of the light guide have different local geometries - the connecting planes have specific inclinations tailored to redirect light from particular regions of the LED to the manuscript. This localized geometric optimization allows effective light guidance while maintaining ease of manufacture through standard molding techniques.
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
This configuration effectively concentrates light intensity on the target area of the manuscript, improving image reading quality with reduced power consumption and lower manufacturing costs compared to conventional systems.
Implementation Method 1
The light guide leads the light from the LED toward the manuscript
Implementation Method 2
a light guide which is made of a transparent material and is capable of causing light that enters the light guide from a light source-to exit the light guide in a specific direction
Implementation Method 3
A part of at least one of the plural connecting planes is inclined with respect to an axis of the light beam
Data Source
AI summary
A novel optical irradiation apparatus includes a light source and a light guide. The light source is configured to radially irradiate a light beam. The light guide is configured to include a transparent material configured to lead the light beam irradiated from the light source in a specific direction and to emit the light beam. The light guide also includes an incidence plane, an exit plane, and plural connecting planes. The incidence plane is configured to receive the light beam. The exit plane is configured to emit the light beam to so as to irradiate an object. The plural connecting planes are configured to connect the incidence plane to the exit plane. A part of at least one of the plural connecting planes is inclined with respect to an axis of the light beam.