Rotating Lens Barrel Sensor Nesting for Compact Volume
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Solution Overview
Problem
Conventional lens devices face challenges in reducing their volume to accommodate smaller digital products, as they often require a larger fixed barrel or increased thickness to house sensors for position detection.
Innovation Solution
A lens device design featuring a rotating lens barrel within a fixed lens barrel, where a sensor is positioned inside the fixed barrel to detect the rotating barrel's position, eliminating the need for additional volume and allowing for a more compact form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor is disposed on the bottom or side wall of the conventional lens device, then the position detection function is achieved, but the volume of the fixed barrel increases or the thickness increases
Solution Approach 1:
The sensor is disposed inside the rotating lens barrel, which is nested within the fixed lens barrel. This nested arrangement allows the sensor to be housed within the existing structure without increasing the overall volume or thickness of the fixed barrel, thereby resolving the contradiction between position detection capability and compact size.
Solution Approach 2:
Instead of placing the sensor on the outer surface (bottom or side wall) of the fixed barrel as in conventional designs, the invention inverts the arrangement by placing the sensor inside the rotating lens barrel. This inversion allows the sensor to utilize the internal space of the rotating barrel, eliminating the need for additional volume in the fixed barrel.
2Measurement precision
If the sensor is disposed on the bottom or side wall of the conventional lens device, then the position detection function is achieved, but the thickness of the lens device increases
Solution Approach 1:
The sensor is nested within the rotating lens barrel, which rotates inside the fixed lens barrel. This nested configuration allows the sensor to be positioned within the existing thickness envelope of the lens device, avoiding any increase in overall thickness while maintaining position detection functionality.
Solution Approach 2:
The invention inverts the conventional approach by placing the sensor inside the rotating barrel rather than on the external surface. This inversion enables the sensor to share the internal space of the rotating mechanism, thereby preventing any increase in the lens device thickness.
3Volume of stationary object
If a rotating lens barrel is used within a fixed lens barrel, then the volume is reduced, but the device complexity increases
Solution Approach 1:
The rotating lens barrel serves multiple functions: it houses the sensor for position detection, provides the detection target for the sensor, and enables the lens focusing mechanism. By consolidating these functions into a single rotating component, the invention reduces overall volume while avoiding proportional increases in complexity.
Solution Approach 2:
The invention merges the sensor housing, detection target, and lens mounting functions into the rotating lens barrel. This consolidation allows the sensor to be integrated within the rotating structure itself, reducing the need for separate components and minimizing the increase in device complexity.
Data Source
AI summary
A lens device is disclosed. The lens device includes a fixed lens barrel, a rotating lens barrel, and a sensor. The rotating lens barrel is sleeved within the fixed lens barrel. The sensor is disposed within the fixed lens barrel for detecting the position of the rotating lens barrel.