Rotating Lens Light Module for Uniform Color Temperature
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Solution Overview
Problem
Conventional lighting devices with multiple semiconductor light-emitting elements face issues with uneven color temperature and lighting due to individual element differences, leading to inconsistent light distribution patterns.
Innovation Solution
A light-emitting module with a rotatable lens and controller that adjusts the output of multiple light sources, allowing the optical axis of emitted light to be oblique to the lens's rotation axis, enabling dynamic control of light distribution patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple semiconductor light-emitting elements are used to provide sufficient illumination, then the illumination intensity is improved, but uneven color temperature and lighting uniformity occur due to individual element differences
Solution Approach 1:
The patent applies the dynamics principle by making the lens rotatable around its optical axis. The lens rotation mechanism allows dynamic adjustment of the light distribution pattern, enabling the system to compensate for individual element differences in semiconductor light-emitting elements. By rotating the lens to different angular positions, the light from multiple elements is redistributed to achieve uniform color temperature and illumination across the imaging subject, resolving the uniformity issue while maintaining high illumination intensity.
2Device complexity
If a conventional lighting device with fixed housing is used, then the device structure is simple, but the light distribution pattern cannot be modified
Solution Approach 1:
The patent implements dynamics by introducing a rotatable lens mechanism that can change the light distribution pattern. The lens rotates around the optical axis of the light source, allowing the system to dynamically adjust and modify the illumination pattern without changing the basic device structure. This provides versatility in light distribution while maintaining relatively simple device architecture.
Solution Approach 2:
The patent applies dimensionality change by introducing rotational movement in the angular dimension. The lens rotates around the optical axis, adding a rotational degree of freedom to the light distribution system. This angular dimension allows the same light source to produce different illumination patterns by changing the rotation angle, thereby achieving pattern modification without adding multiple light sources or complex mechanical structures.
3Adaptability or versatility
If the optical axis of emitted light is made oblique to the lens rotation axis, then customizable light distribution patterns are achieved, but the lens rotation mechanism becomes more complex
Solution Approach 1:
The patent applies asymmetry by configuring the lens optical axis obliquely relative to the lens rotation axis. This asymmetric arrangement allows the lens to generate customizable light distribution patterns when rotated, as the oblique angle creates varying projection angles of the light beam during rotation. The asymmetric configuration enables pattern customization while keeping the rotation mechanism itself relatively simple, as it only requires a single rotational degree of freedom around a fixed axis.
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 solution allows for customizable and uniform light distribution patterns, addressing the inconsistencies in color temperature and lighting uniformity across the emission area.
Implementation Method 1
a first light source unit including a first light source and a first lens on which light emitted from the first light source is incident
Data Source
AI summary
A light-emitting module includes: a substrate; a plurality of light source units, each including: a light source located on the substrate, and a lens on which light emitting from the light source is incident; a driver configured to rotate the plurality of light source units in a state in which the substrate and the plurality of light source units are fixed relative to each other; and a controller configured to control outputs of the plurality of light sources conjunctively with the driver. Among the lenses of the plurality of light source units, a number of the lenses configured to irradiate light while being on a trajectory in a first irradiation region centered on a rotation axis of the plurality of light source units is less than a number of the lenses configured to irradiate light while being on a trajectory in a second irradiation region centered on the rotation axis.