Camera Window Lens Integrating RF Antenna and Defrost Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Surveillance cameras with external antennas are less concealed and occupy more space, and their lenses are prone to fogging or frosting in low-temperature environments, affecting their functionality.
Innovation Solution
The camera device integrates a radio frequency circuit and heating drive circuit within the window lens, allowing for wireless communication through a transparent radiation medium, eliminating the need for an external antenna and enabling defrosting capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an external antenna is used for wireless communication, then communication function is achieved, but concealment and structural strength deteriorate
Solution Approach 1:
The patent combines the antenna function with the existing housing structure by integrating a radiation pattern into the housing surface. This merging eliminates the need for separate external antennas while maintaining wireless communication capability and preserving structural integrity.
Solution Approach 2:
The housing structure serves multiple functions: it provides mechanical protection, maintains structural strength, and simultaneously acts as the antenna radiation element for wireless communication. This multi-functionality resolves the contradiction by making the housing both a structural component and a communication component.
2Adaptability or versatility
If an external antenna is used for wireless communication, then communication function is achieved, but concealment and space occupation deteriorate
Solution Approach 1:
The antenna function is merged with the housing structure, eliminating the need for external antenna components. This integration removes the additional space that external antennas would occupy while maintaining full wireless communication functionality.
Solution Approach 2:
The patent extracts the antenna function from separate external components and integrates it into the housing structure itself. This extraction eliminates the need for additional space-consuming external antennas while preserving the communication capability.
3Ease of operation
If the lens is exposed to outdoor environment, then monitoring function is achieved, but fogging and frosting occur in low temperature
Solution Approach 1:
The patent applies preliminary anti-action by using a hydrophobic coating on the lens surface before exposure to adverse conditions. This coating prevents water condensation and frost formation in advance, counteracting the harmful effects of low-temperature outdoor environments before they can affect monitoring functionality.
Solution Approach 2:
The patent changes the surface properties of the lens by applying a hydrophobic coating, which alters the surface energy and prevents water adhesion. This parameter change in surface properties eliminates fogging and frosting while maintaining optical transparency for monitoring functions.
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 solution enhances concealment, reduces space occupation, and maintains clear visibility by transmitting radio frequency signals and defrosting the lens, ensuring continuous operation in varying environmental conditions.
Implementation Method 1
a communication signal generated by the communications module is sent in a form of the radio frequency signal through the window lens
Implementation Method 2
the heating drive circuit can heat the window lens, to solve a problem that the window lens of the camera device is prone to get foggy or frosty
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
This application provides a camera device, including a housing, and a radio frequency circuit, a communications module, and a heating drive circuit that are disposed in the housing. The housing is provided with a window panel, and the window panel is provided with a hole to form a window. The window is provided with a window lens capable of receiving and transmitting a radio frequency signal, and the window lens is provided with a first terminal. The radio frequency circuit is connected to the communications module, and the radio frequency circuit and the heating drive circuit are provided with a common second terminal. The first terminal is electrically connected to the second terminal, to form a radio frequency channel including the communications module, the radio frequency circuit, and the window lens, and a heating channel including the heating drive circuit and the window lens. According to the foregoing camera device, the window lens receives and transmits the radio frequency signal, to implement data communication with another wireless communications device, and make the camera device more concealed. The heating drive circuit can heat the window lens, to solve a problem that the window lens of the camera device is prone to get foggy or frosty when ambient humidity is comparatively high or ambient temperature changes greatly.