Rotating Lens Light-Emitting Module for Contour-Accurate Irradiation
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Solution Overview
Problem
Conventional light-emitting modules struggle to achieve high spatial resolution of irradiation light, leading to issues such as overexposure and inability to emit light along the contours of objects.
Innovation Solution
A light-emitting module with a plurality of light-emitting elements, a controller to individually control these elements, and a lens that rotates relative to the light source, allowing the optical axis to move on a first trajectory, with brightness adjustments in divided time periods based on object information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional light-emitting modules use a simple light source and lens configuration, then the device complexity is low, but the spatial resolution of irradiation light is insufficient
Solution Approach 1:
The light source is divided into multiple light-emitting elements arranged in a matrix, allowing independent control of each element. This segmentation enables precise spatial resolution by selectively activating specific elements to match object contours, resolving the contradiction between simple structure and high precision irradiation.
Solution Approach 2:
The lens is made rotatable relative to the light source, creating dynamic movement of the optical axis along a first trajectory while the light beam moves along a second trajectory. This dynamic configuration allows the system to achieve high spatial resolution through motion-based scanning without requiring a statically complex structure.
2Manufacturing precision
If conventional light-emitting modules use fixed brightness illumination, then the control system is simple, but overexposure occurs and inability to emit light along object contours
Solution Approach 1:
Each light-emitting element can be independently controlled with different brightness levels based on local object characteristics. The controller adjusts the brightness of individual elements or groups of elements to match the local contours and features of the object, preventing overexposure in bright areas while maintaining detail in darker areas.
Solution Approach 2:
The system divides one cycle of lens rotation into multiple divided time periods and controls the brightness of light-emitting elements in each time period. This periodic control allows the system to emit light along object contours by activating elements at appropriate times during the rotation cycle, achieving precise irradiation patterns.
3Manufacturing precision
If the lens rotates relative to the light source to move the optical axis on a first trajectory, then the spatial resolution is improved, but the device complexity increases
Solution Approach 1:
The relative rotation between lens and light source creates dynamic trajectories for both the optical axis (first trajectory) and the main light beam (second trajectory). This dynamic approach achieves high spatial resolution through motion scanning, where the resolution is enhanced by the scanning pattern rather than requiring static precision mechanical structures.
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 achieves high spatial resolution of irradiation light, preventing overexposure and enabling light emission along object contours, enhancing image quality by reducing deviations in irradiation patterns.
Implementation Method 1
a lens configured to transmit light from the plurality of light-emitting elements; and a driver configured to make a relative rotation between the lens and the light source
Data Source
AI summary
A light-emitting module includes: a light source including a plurality of light-emitting elements; a controller configured to individually turn on the plurality of light-emitting elements; a lens configured to transmit light from the plurality of light-emitting elements; and a driver configured to cause a relative rotation between the lens and the light source such that an optical axis of the lens or a central axis of the light source moves on a first trajectory in a top view. Light from each of the plurality of light-emitting elements after being transmitted through the lens is emitted such that a main light beam of the light moves on a second trajectory corresponding to the first trajectory.