Semiconductor Light Source With Segmented Optics For Camera Adaptability
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Solution Overview
Problem
Existing semiconductor light sources for camera systems lack adaptability to varying ambient light conditions and cannot effectively adjust illumination for different camera sensors with varying focal lengths and target window sizes, leading to inadequate performance under dark conditions.
Innovation Solution
A semiconductor light source comprising multiple emission units and a unique optics system with inner and outer regions that converge and expand radiation respectively, allowing for adjustable illumination by changing the size of the light source and beam paths, enabling separate illumination of the center and corners of the target area without mechanical moving parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single emission unit and simple optics are used, then the device complexity is reduced, but the adaptability to different camera sensors and ambient light conditions deteriorates
Solution Approach 1:
The optics is divided into an inner region and an outer region with different functions. The inner region converges radiation to illuminate the center of the target area, while the outer region expands radiation to illuminate the corners. This segmentation allows the single light source to adapt to different camera sensor configurations and ambient light conditions without requiring multiple separate emission units or complex mechanical adjustment mechanisms.
2Adaptability or versatility
If mechanical moving parts are added to adjust illumination, then the adaptability to different target areas is improved, but the device complexity and vibration stability deteriorate
Solution Approach 1:
The patent replaces mechanical adjustment mechanisms with an optical design that uses the different light emission regions of the optics to achieve variable illumination patterns. By selectively utilizing the inner region for center illumination and the outer region for corner illumination, the system achieves adaptability without any mechanical moving parts, thereby improving vibration stability while maintaining complexity.
3Area of stationary object
If the light source size is increased to cover larger areas, then the illumination coverage is improved, but the focusing capability and luminance deteriorate
Solution Approach 1:
The optics features an inner region with light emission properties optimized for center illumination and an outer region with properties optimized for corner illumination. This local differentiation allows the system to provide both strong focusing capability for the center area and extended coverage for the corners, achieving high luminance in the center while maintaining comprehensive area coverage without requiring a uniformly large light source.
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 solution provides a compact, adaptable flash light source that can adjust to different camera sensors, achieving stronger focusing, higher luminance, and more defined homogeneity in illumination, reducing space requirements and improving service life and vibration stability.
Implementation Method 1
the optical system has an inner region that converges radiation from the first emission unit
Implementation Method 2
the optical system has an outer region that expands radiation from the second emission unit
Data Source
AI summary
A semiconductor light source includes at least one first emission unit, at least one second emission unit, and an optics, wherein the optical system has an inner region that converges radiation from the first emission unit, the optical system has an outer region that expands radiation from the second emission unit, a first light emission region of the inner region completely covers the first emission unit when viewed in plan view, and at least partially covers the second emission unit, a second light emission region of the outer region is partially or completely beside the second emission unit when viewed in plan view, and the inner region and the outer region have differently shaped light entry regions.