Camera Module Lens Recess for Temperature Control Element
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Solution Overview
Problem
Camera modules for motor vehicles face challenges in maintaining optimal temperature across extreme temperature ranges, leading to self-heating issues due to poor heat dissipation, and existing temperature control solutions are often exposed to external influences and electrical interference.
Innovation Solution
A camera module design featuring a temperature control element housed within recesses of the front and second optical lenses, which are connected via an optical adhesive to form a lens doublet, ensuring protected and stable temperature control while preventing electrical short circuits and corrosive damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a temperature control element is provided outside the lens housing to heat or cool the optical unit, then temperature control capability is achieved, but the temperature control element is exposed to external influences and electrical interference
Solution Approach 1:
The temperature control element is nested within a recess of the lens housing, which is itself part of the objective assembly. This nested structure protects the temperature control element from external influences while maintaining its temperature control function. The recess acts as a protective cavity that shields the sensitive electrical component from environmental factors.
Solution Approach 2:
The lens housing and its recess act as an intermediary structure between the temperature control element and the external environment. This intermediary provides physical protection and electrical isolation, preventing direct exposure to harmful external factors while still allowing the temperature control element to perform its heating or cooling function on the optical unit.
2Temperature
If the temperature control element is positioned closer to the optical lenses for better temperature control, then temperature control precision is improved, but the risk of electrical short circuits and corrosive damage increases
Solution Approach 1:
The temperature control element is nested within a recess of the lens housing, positioning it close to the optical lenses for effective temperature control while simultaneously protecting it from electrical interference and corrosive damage. The recess provides a protected environment that maintains close proximity to the optical unit without direct exposure to harmful factors.
Solution Approach 2:
The lens housing recess serves as an intermediary structure that enables close positioning of the temperature control element to the optical lenses while providing electrical isolation and protection from corrosion. This intermediary structure resolves the conflict between needing proximity for precision and needing distance for protection.
3Ease of manufacture
If the temperature control element is exposed to the external environment for easier access and installation, then ease of manufacture is improved, but reliability against environmental damage deteriorates
Solution Approach 1:
The temperature control element is nested within a recess of the lens housing, which is part of the objective assembly. This nested structure provides protection from environmental damage while the recess is designed to accommodate the temperature control element in a way that facilitates its installation and integration into the objective assembly during manufacturing.
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 provides robust, secure, and homogeneous temperature control for the optical unit, protecting the temperature control element from external influences and electrical interference, enhancing the camera module's reliability and longevity.
Implementation Method 1
a temperature control element (106), which is designed to influence a temperature of at least one front lens (102) of the objective (115)
Data Source
AI summary
A camera module. The camera module includes a circuit board on which at least one image sensor is situated; an objective including a lens housing and multiple optical lenses situated inside the lens housing; an objective holder, which is connected to the circuit board and is designed to hold the objective; and at least one temperature control element, which is designed to influence the temperature of at least one front lens of the objective; a second optical lens being situated at the front lens. The front lens and/or the second optical lens includes/include at least one recess, the at least one temperature control element being situated in the at least one recess.