Induction Heating Device for Camera Lens Condensation Removal
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Solution Overview
Problem
Existing heating devices for camera lenses require electrical terminals and wiring, which can be cumbersome and prone to electrical losses, and fail to efficiently clear condensation without separate temperature sensors.
Innovation Solution
A heating device comprising a housing for the camera lens, a primary induction coil generating a magnetic field, a secondary induction coil overlaying the primary coil to produce heat, and a controller circuit to manage power, eliminating direct electrical connections and using a low-Q resonant circuit for efficient heat control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If electrical terminals and wiring are attached to heat the camera lens, then heating function is achieved, but device complexity and electrical losses increase
Solution Approach 1:
The patent replaces traditional electrical heating elements and wiring with an induction heating system using magnetic fields. The induction coil generates a magnetic field that induces eddy currents in the camera lens housing, which then self-heats without direct electrical contact. This eliminates the need for electrical terminals and wiring on the lens assembly, reducing both complexity and electrical losses.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the power source and the camera lens. The induction coil converts electrical energy to magnetic energy, which then induces heating in the lens housing through electromagnetic induction. This intermediary approach allows energy transfer without direct electrical connection, solving the contradiction between heating efficiency and device complexity.
2Measurement precision
If traditional heating elements are used, then heating is achieved, but thermal resistance increases and temperature control precision decreases
Solution Approach 1:
The induction heating system enables the camera lens housing to self-heat through induced eddy currents. The magnetic field penetrates the housing and induces currents that generate heat directly within the housing material itself, eliminating the need for external heating elements that would introduce thermal resistance. This self-service heating mechanism improves thermal efficiency and temperature control precision.
3Reliability
If separate temperature sensors are added for condensation clearing, then temperature monitoring is improved, but device complexity increases
Solution Approach 1:
The induction heating system serves multiple functions: it heats the camera lens to clear condensation, and simultaneously provides temperature control through the controller circuit that regulates power to the induction coil. The system integrates heating and temperature management into a single unified solution, eliminating the need for separate temperature sensors and control mechanisms, thus improving reliability while reducing device complexity.
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 effectively heats the camera lens to clear condensation without electrical connections, reducing complexity and thermal resistance, and allows for precise temperature control without separate sensors, ensuring safe and efficient operation.
Implementation Method 1
a primary induction coil positioned proximate the housing and configured to generate a magnetic field in response to receiving electrical power from a power supply
Implementation Method 2
a secondary induction coil overlaying the primary induction coil, the secondary induction coil configured to receive the magnetic field from the primary induction coil and generate heat
Implementation Method 3
The secondary induction coil heats the camera lens when the primary induction coil receives the electrical power
Data Source
AI summary
A heating device includes a housing, a primary induction coil, a controller circuit, and a secondary induction coil. The housing is configured to retain a camera lens. The primary induction coil is positioned proximate the housing and configured to generate a magnetic field in response to receiving electrical power from a power supply. The controller circuit is in electrical contact with the primary induction coil and is configured to control the electrical power delivered to the primary induction coil. The secondary induction coil overlays the primary induction coil and is configured to receive the magnetic field from the primary induction coil and generate heat. The secondary induction coil heats the camera lens when the primary induction coil receives the electrical power.