Lens Assembly Custom Focus Control via Independent Driving Unit
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Solution Overview
Problem
Lens assemblies manufactured by different makers may not be compatible with various cameras, and they often have limited ability to adjust focus independently due to limited information received from the camera.
Innovation Solution
A lens assembly with a barrel detachably coupled to a camera, featuring a driving unit, input button, and control device that allows for custom focus adjustment and storage, enabling the lens to move to a preset focus position based on user input, with operation modes for custom and non-custom focus settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lens assembly relies on camera controls for focus adjustment, then the system is simpler, but the focus adjustment capability is limited
Solution Approach 1:
The patent divides the focus adjustment system into two independent parts: camera-based control and lens-based control. The lens assembly includes its own control unit and driving unit that can operate independently from the camera, allowing users to adjust focus directly through the lens assembly without relying on camera controls.
Solution Approach 2:
The lens assembly is designed to perform multiple functions: it can be controlled by the camera when attached, but also has independent control capabilities built into the lens assembly itself. This multi-functionality allows the same lens assembly to work with different cameras and provide autonomous focus adjustment.
2Measurement precision
If the lens assembly receives limited information from the camera, then the compatibility is better, but the focus adjustment precision is reduced
Solution Approach 1:
The lens assembly performs self-measurement and self-adjustment of focus. The control unit within the lens assembly directly controls the driving unit to move the focusing lens based on user input or stored custom focus positions, eliminating the need to receive detailed focus information from the camera.
Solution Approach 2:
The patent implements a feedback mechanism where the lens assembly stores custom focus positions and uses this stored information to automatically adjust focus. The control unit receives user input and compares it with stored custom focus data to make precise adjustments without needing continuous information from the camera.
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
Enables the lens assembly to store and adjust focus information independently, allowing users to set custom focus positions without relying solely on camera controls, enhancing focus adjustment capabilities.
Implementation Method 1
a driving unit moving the focusing lens by generating a driving force with power supplied from the camera
Data Source
AI summary
Provided are a lens assembly including, a barrel detachably coupled to a camera, a focusing lens, a driving unit moving the focusing lens by generating a driving force with power supplied from the camera, an input button receiving a user command, and a control device controlling the driving unit to move the focusing lens to a preset custom focus position when a custom focus adjustment command is input through the input button.