Lens Mechanism with Internal Sensor Nesting
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Solution Overview
Problem
Existing lens mechanisms are bulkier due to the external placement of sensors and adjustment mechanisms, which increases their size and reduces flexibility in design.
Innovation Solution
Integrating sensors and adjustment mechanisms inside a fixation member of the lens mechanism, allowing for a compact design by positioning them radially within the fixation member, and using a cam tube and cam shafts for movement and adjustment, while maintaining the ability to tilt, shift, and rotate the lens mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sensors and adjustment mechanisms are disposed outside the fixation member, then ease of assembly and maintenance is improved, but the overall size of the lens mechanism increases
Solution Approach 1:
The patent integrates the sensor and adjustment mechanism inside the fixation member, merging previously separate components into a unified structure. This consolidation reduces the overall volume of the lens mechanism while maintaining functional independence, as the sensor detects positions and the adjustment mechanism modifies optical paths within the confined space of the fixation member.
Solution Approach 2:
The sensor and adjustment mechanism are nested within the fixation member, utilizing the internal space of the existing structure. This nesting approach allows compact arrangement where the sensor and adjustment components are housed inside the fixation member's cavity, minimizing external dimensions without compromising assembly simplicity.
2Ease of repair
If sensors and adjustment mechanisms are disposed outside the fixation member, then ease of maintenance is improved, but device complexity increases
Solution Approach 1:
By combining the sensor and adjustment mechanism within the fixation member, the patent reduces the number of external connections and interfaces required. This integration simplifies the overall structural complexity by eliminating the need for separate mounting structures, external wiring harnesses, and additional alignment mechanisms that would be required if components were disposed outside the fixation member.
3Volume of moving object
If the lens mechanism is made compact by integrating components inside the fixation member, then volume is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The sensor integrated within the fixation member enables self-monitoring and feedback control of the lens positions. By continuously detecting the actual positions of movable lenses and comparing them with target positions, the system can automatically compensate for manufacturing tolerances and assembly variations, reducing the stringency of precision requirements during manufacturing while maintaining compact dimensions.
Data Source
AI summary
A lens mechanism includes a lens holding member that holds a lens, a movement member that is connected to the lens holding member, a fixation member that supports the movement member to be movable in an optical axis direction, a sensor that detects a position of the movement member, and an adjustment mechanism of the lens holding member. The sensor and the adjustment mechanism are disposed on an inside of the fixation member.