Lens Module with VCM and DLP for Dynamic Pattern Formation
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Solution Overview
Problem
Conventional lens modules lack flexibility in forming various patterns when projecting light, failing to meet the diverse demands of face recognition technology.
Innovation Solution
A lens module comprising a printed circuit board, a voice coil motor, a lens, a light-emitting element, a prism, and a digital light processing (DLP) component, where the voice coil motor and DLP component work together to adjust the distance between the lens and the light-emitting element, and the DLP component uses microchips to control light reflection for pattern formation, enabling flexible pattern creation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional lens modules are used, then the structure is simple, but the ability to form various patterns is limited
Solution Approach 1:
The patent implements dynamic adjustability by allowing the lens to move along the optical axis through a driving mechanism (such as a voice coil motor or piezoelectric actuator). This enables the lens module to dynamically change focal length and form different patterns (e.g., spot pattern, line pattern, face pattern) by adjusting the lens position relative to the light-emitting element, thereby resolving the contradiction between structural simplicity and pattern-forming versatility.
Solution Approach 2:
The patent designs the lens module with multi-functional capabilities by integrating a light-emitting element, a movable lens, and a driving mechanism into a single system. This unified structure can perform multiple functions including forming spot patterns, line patterns, and face patterns, as well as adjusting focal length, thereby achieving high adaptability without requiring multiple separate components.
2Adaptability or versatility
If the lens module structure is simplified, then manufacturing is easier, but flexibility in pattern formation is reduced
Solution Approach 1:
The patent achieves flexible pattern formation through a compact dynamic adjustment mechanism where the lens can be moved along the optical axis. This dynamic structure is integrated into a unified lens module assembly that includes the light-emitting element and driving mechanism, making it manufacturable as a single integrated unit while maintaining the flexibility to form various patterns through controlled lens movement.
3Adaptability or versatility
If fixed focal length is used, then the device is simpler, but it cannot meet varied demands of face recognition
Solution Approach 1:
The patent replaces fixed focal length with a dynamic adjustable focal length system. The lens is coupled with a driving mechanism that enables it to move along the optical axis, allowing the focal length to be adjusted in real-time. This dynamic capability enables the lens module to meet varied face recognition demands (different distances, patterns, and focal requirements) while keeping the adjustment mechanism integrated and compact.
Solution Approach 2:
The lens module incorporates an integrated driving mechanism that automatically adjusts the lens position based on control signals. This self-service capability allows the system to adapt to different face recognition requirements without manual intervention, with the driving mechanism (voice coil motor or piezoelectric actuator) directly coupling to the lens to enable precise focal length adjustment.
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 the lens module's flexibility and applicability by allowing for clear pattern formation at different focal lengths, improving its ability to meet varied demands in face recognition technology.
Implementation Method 1
a voice coil motor configured to capture the pattern and automatically adjust a distance between the lens and the digital light processing component
Implementation Method 2
a prism configured to reflect the light emitted by the light emitting element to the DLP component
Implementation Method 3
a lens received in the voice coil motor
Implementation Method 4
the DLP component uses microchips to control light reflection for pattern formation
Data Source
AI summary
A lens module includes a voice coil motor, a lens received in the voice coil motor, a light emitting element adapted for emitting lights, a prism, and a DLP sensor. The prism faces and inclines towards the light emitting element. The prism is configured to reflect the lights from the light emitting element to the DLP sensor. The voice coil motor is configured to automatically adjust a distance between the lens and the DLP sensor according to a sharpness of the pattern and send electronic signals to the DLP sensor. When the DLP sensor receives the electronic signals, the DLP sensor rotates to change states of the DLP sensor according to the electronic signals and control an amount of the lights reflected into the lens according to the electronic signals thereby forming a pattern with a higher degree of sharpness than the pattern previously captured.