Adaptive Streetlight Beam Control for Light Pollution Reduction
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Solution Overview
Problem
Streetlights and other illumination sources cause light pollution and safety issues due to inconsistent light direction and intensity, with current directional light shields being imprecise and ineffective in managing light distribution.
Innovation Solution
Implementing adjustable light sources in streetlights with features like adjustable shutters, LED arrays, and MEMS mirror chips, coupled with sensors and AI, to dynamically adjust light direction, intensity, and patterns based on environmental data and user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If directional light shields are used to control light direction, then light pollution is reduced, but the control precision is insufficient and light distribution remains inconsistent
Solution Approach 1:
The patent employs adjustable shutters and LED arrays that can dynamically change their configuration to control light direction and intensity. The shutters can rotate to different angles, and LED arrays can be selectively activated, transforming the static lighting system into a dynamic one that adapts to specific environmental conditions and achieves precise light distribution control.
Solution Approach 2:
The system changes multiple parameters simultaneously including shutter angle, LED activation patterns, and light intensity levels to achieve precise control over light direction and distribution. By adjusting these parameters based on environmental conditions and user preferences, the system overcomes the fixed, imprecise nature of traditional light shields.
2Object-generated harmful factors
If traditional fixed light shields are used, then light blocking is achieved, but light distribution consistency deteriorates due to overlapping coverage areas and installation inconsistencies
Solution Approach 1:
The patent implements different lighting configurations for different zones by selectively activating specific LED arrays and positioning shutters at various angles. Each light fixture can be independently controlled to provide uniform illumination in its specific coverage area, eliminating the overlapping and inconsistent light distribution caused by fixed shields while preventing light trespass into unwanted areas.
3Measurement precision
If granular control over light direction and intensity is implemented with adjustable components, then light precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple control functions into an integrated system where shutters, LED arrays, and control electronics work together as a unified assembly. This merging of components reduces the overall system complexity compared to having separate adjustable light shields and control mechanisms, while still achieving granular control over light direction and intensity.
4Ease of manufacture
If current directional light shields are used, then some light blocking is achieved, but manufacturing precision requirements are reduced, yet installation precision deteriorates
Solution Approach 1:
The patent incorporates sensors and control systems that automatically detect installation conditions and adjust lighting parameters accordingly. This self-adjusting capability compensates for installation variations, reducing the need for high installation precision while maintaining consistent light distribution performance across different installation scenarios.
Data Source
AI summary
Techniques for adjusting light direction and light intensity from streetlights in an environment. For example, a streetlight may include an adjustable light source that can be configured to cast light based on its specific installation environment, taking into account height (e.g., a height of a pole coupled with the streetlight relative to a surface of the environment), an angle in which the streetlight is coupled to the pole, a type of surface being lit (e.g., blacktop, concrete, grass, etc.), an amount of light present from surrounding fixtures (e.g., streetlights), and/or an intended area to illuminate (light only streets and sidewalks, light only parking lot, light only walking paths, etc.).