Rotating Light Module for Variable Beam Patterns and Uniform Illumination
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Solution Overview
Problem
Existing light emitting modules lack the ability to dynamically change the light distribution pattern.
Innovation Solution
A light emitting module comprising a substrate with individually controllable light sources, a light shielding member, a first lens, and a drive unit that rotates the substrate, allowing the angles of rotation and optical axes of the light sources to differ, enabling the formation of distinct irradiation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the casing is rotated to mix light and eliminate nonuniformity, then color temperature uniformity is improved, but the light distribution pattern becomes constant and cannot be changed
Solution Approach 1:
The patent applies dynamics by making the light distribution pattern changeable through rotational movement. The lighting device can rotate the casing around the axial center, allowing the light distribution pattern to dynamically adjust between different patterns (e.g., wide-angle and narrow-angle patterns) while maintaining color temperature uniformity through the mixing effect of rotation.
Solution Approach 2:
The patent implements multi-functionality by enabling the same rotational mechanism to serve dual purposes: (1) mixing light to eliminate color temperature nonuniformity, and (2) changing the light distribution pattern. This allows a single device to provide both uniformity correction and pattern versatility without requiring separate mechanisms.
2Adaptability or versatility
If multiple light sources with different angles are used to create variable patterns, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple light sources (first light source and second light source with different optical axes) into a single integrated module. By combining these light sources with different emission angles within one housing and rotating the entire assembly, the device achieves variable light distribution patterns without requiring separate rotating mechanisms for each light source, thereby reducing overall structural complexity.
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 module can dynamically change the light distribution pattern, providing flexibility in light projection and ensuring uniform illumination across various distances and subjects.
Implementation Method 1
a first lens disposed above the light sources and on which the light emitted by each of the light sources becomes incident
Implementation Method 2
a drive unit capable of rotating the substrate
Data Source
AI summary
A light emitting module includes: a substrate; a plurality of light sources fixed on the substrate, including two or more groups, outputs of each of the two or more groups being separately controllable; at least one light shielding member disposed between the light sources, the at least one light shielding member being in contact with a lateral surface of the light sources, and the at least one light shielding member comprising a resin material and a light diffusing material; a first lens disposed above the light sources and on which the light emitted from each of the light sources becomes incident; and drive unit capable of rotating the substrate.