Bent-Path Stereoscopic Lens With Shared Actuator Synchronization
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Solution Overview
Problem
In stereoscopic lens apparatuses, drive differences between the focus and image stabilizing lens units of the two optical systems lead to differences in focus state and image magnification, causing issues in stereoscopic viewing and image quality.
Innovation Solution
The stereoscopic lens apparatus includes two optical systems with a holder that integrally holds the movable units of both systems, driven by an actuator to reduce drive differences and ensure synchronized operation of the focus and image stabilizing lens units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate actuators are used for focus and image stabilizing lens units in each optical system, then independent control is achieved, but drive differences occur between the two optical systems
Solution Approach 1:
The patent merges the control of focus and image stabilizing lens units by integrating them into a single movable unit that is commonly shared between the two optical systems. This unified structure ensures that both lens units are driven simultaneously by the same actuator, eliminating drive differences while maintaining independent control capabilities through coordinated operation.
2Measurement precision
If multiple actuators are provided for each movable unit, then precise control is achieved, but device complexity and power consumption increase
Solution Approach 1:
The patent implements multi-functionality by designing a single actuator that controls multiple lens units (focus and image stabilizing) across both optical systems. This universal actuator approach reduces the total number of actuators required while maintaining precise control through coordinated movement of all lens units, thereby simplifying device structure and reducing power consumption.
3Adaptability or versatility
If separate drive mechanisms are used for each optical system, then system independence is maintained, but manufacturing precision requirements increase
Solution Approach 1:
The patent merges the drive mechanisms by providing a common actuator and integrated movable unit structure for both optical systems. This unified approach ensures that drive synchronization is inherently maintained through the shared mechanical structure, reducing manufacturing precision requirements compared to separate drive mechanisms while preserving system independence through optical path separation.
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
This configuration reduces drive differences between the movable units, enhancing the stereoscopic effect, improving image quality, and reducing the size and power consumption of the lens apparatus.
Implementation Method 1
two reflection members are disposed in each optical system to bend the optical path
Data Source
AI summary
A stereoscopic lens apparatus includes two optical systems disposed in parallel. The two optical systems each include a front group, a reflection unit, and a rear group that are disposed in order from an object side to an image side, and an optical axis interval between the rear groups of the two optical systems is shorter than an optical axis interval between the front groups of the two optical systems due to optical path bending by the reflection unit. The rear groups of the two optical systems each include a movable unit that can be moved. The stereoscopic lens apparatus further includes a holder integrally holding the movable units of the two optical systems, and an actuator configured to drive the holder.