Surveillance Camera Infrared LED Pedestal Height Optimization
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Solution Overview
Problem
In outdoor surveillance cameras, the interference between the dome cover and wide-angle or narrow-angle lenses can occur due to their different heights and sizes, leading to potential vignetting and structural issues.
Innovation Solution
The camera design includes a first and second infrared irradiation portion with LEDs and corresponding lenses disposed on pedestals, where the pedestals are positioned differently in the up-down direction to prevent interference, allowing for separate and precise adjustment of wide-angle and narrow-angle lenses, thereby avoiding vignetting and optimizing the camera's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the wide-angle lens and narrow-angle lens are disposed on pedestals at the same height with respect to the imaging unit, then the structure is simplified and easier to manufacture, but the lenses may interfere with the dome cover due to their different heights and sizes
Solution Approach 1:
The patent applies dimensional change by transitioning from a two-dimensional planar arrangement (same height level) to a three-dimensional spatial arrangement (different height levels). Specifically, the wide-angle lens is disposed on a first pedestal at a first height and the narrow-angle lens is disposed on a second pedestal at a second height, vertically separating the lenses to prevent their protruding portions from interfering with the dome cover while maintaining structural simplicity
2Object-affected harmful factors
If the wide-angle lens and narrow-angle lens are disposed at different heights on pedestals, then interference with the dome cover is prevented, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the lens support structure into separate pedestals at different height levels. The wide-angle lens is mounted on a first pedestal at a first height while the narrow-angle lens is mounted on a second pedestal at a second height, allowing independent positioning and adjustment of each lens type to prevent dome cover interference without requiring complex integrated mounting mechanisms
3Stability of the object's composition
If the lenses are disposed to prevent interference with the dome cover, then the structural integrity is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by providing different pedestal heights tailored to the specific requirements of each lens type. The first pedestal is designed at a first height suitable for the wide-angle lens, while the second pedestal is designed at a second height suitable for the narrow-angle lens, allowing each lens to be optimally positioned to prevent dome cover interference without requiring high-precision adjustment mechanisms
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 configuration prevents interference between the dome cover and lenses, enhances design freedom, reduces the need for high precision components, and minimizes the overall structure's size, while allowing for standardized components and reduced manufacturing costs.
Implementation Method 1
a first light source of the first infrared light and a first pedestal on which the first light source is placed. The second infrared irradiation portion includes a second light source of the second infrared light and a second pedestal on which the second light source is placed
Data Source
AI summary
A surveillance camera includes a first infrared irradiation portion that irradiates first infrared light, a second infrared irradiation portion that irradiates second infrared light having a narrower irradiation angle than the first infrared light, a camera body including an imaging lens for allowing light to be incident from an irradiation region of at least one of the first and second infrared lights, and a dome cover covering the camera body. The first infrared irradiation portion includes a first light source of the first infrared light and a first pedestal on which the first light source is placed. The second infrared irradiation portion includes a second light source of the second infrared light and a second pedestal on which the second light source is placed. 10 The first light and second sources, which are provided adjacent to a side surface of the camera body, are disposed differently in an up-down direction.