Alternating Halogen Lamp Arrays for Uniform Linear Illumination
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Solution Overview
Problem
Conventional linear light irradiation devices using halogen lamps face issues with non-uniform illuminance due to socket width and light attenuation in optical fibers, failing to fully utilize the high intensity and wide wavelength range of filament light sources.
Innovation Solution
The device alternately arranges two light source arrays with halogen lamps in different postures along a straight line or arc, allowing closer spacing and uniform light distribution while minimizing light attenuation, using conventional sockets and heat management features like mirrors and antireflection members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple halogen lamps are arranged in a light source array with sockets, then the light sources can be connected to terminals via sockets, but the sockets are wider than the light emission parts causing them to impede adjacent light emission parts from being arranged close together, creating gaps that make illuminance alternate between strong and weak along the longitudinal direction, resulting in non-uniform irradiance distribution
Solution Approach 1:
The patent transitions from a single-plane arrangement to a three-dimensional configuration by alternating light sources between front and back positions relative to the optical axis. This spatial reconfiguration allows light emission parts to be positioned closer together along the optical axis while sockets are arranged in alternating patterns, eliminating the width constraint problem and achieving uniform irradiance distribution.
2Ease of operation
If optical fibers are used to guide light from halogen lamps, then light can be transmitted to linearly arranged emission points, but the light repeats reflection in the optical fibers and is attenuated, reducing the intensity of linear light and failing to sufficiently utilize the merits of filament light emission
Solution Approach 1:
The patent extracts and eliminates the optical fiber component from the light transmission system. By removing the optical fibers that cause reflection and attenuation, the system directly positions halogen lamp light emission parts to face the target object, thereby preserving the high intensity characteristics of filament light emission while achieving linear light guidance through direct geometric arrangement.
3Illumination intensity
If light sources are arranged alternately in different postures in two light source arrays, then the arrangement interval between light sources can be narrowed and illuminance uniformity can be improved, but the device complexity increases due to alternating arrangements
Solution Approach 1:
The patent segments the light source array into two distinct sub-arrays (front array and back array) positioned at different depths along the optical axis. Each sub-array contains light sources in specific postures, and by alternating between these segmented arrays, the system achieves uniform illuminance while maintaining manageable complexity through modular organization of the light source configurations.
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 achieves highly uniform and intense linear light irradiation with reduced strength/weakness in illuminance along the longitudinal direction, maintaining high intensity and improving heat radiation performance without increasing costs.
Implementation Method 1
A light source of a type that makes a filament emit light, such as a halogen lamp, has a wide wavelength range, emits light having high intensity up to an infrared range
Implementation Method 2
a linear light irradiation device of a guide type that makes light emitted from a halogen lamp incident from one ends of optical fibers and emits it from the other ends of the optical fibers
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
To improve the uniformity of illuminance along the longitudinal direction of linear light, and with the intensity of light emitted from filaments kept high, use it as the linear light. A first light source array L1 and a second light source array L2 each of which is adapted to array multiple light sources 10 each of which terminals 14 connected to a socket 20 extend from a light emission part 12 having a filament 11 are included, in which the respective light sources 10 of the first light source array L1 and the respective light sources 10 of the second light source array L2 are alternately arranged along an array direction with the light emission parts 12 directed toward the other light source array sides, and the filaments 11 of the respective light sources 10 of both the light source arrays L1, L2 are positioned on the same line.