Deflection Optical System Hand Shake Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing camera devices face challenges in implementing a space-saving anti-shake mechanism for hand shake correction without increasing the device's dimensions, particularly for small-sized portable electronic devices with long zoom optical systems.
Innovation Solution
The camera device employs a deflection optical system with a reflection member and a set of lenses, where image shake around different axes is corrected by rotating the reflection member and moving the lenses, respectively, using a voice coil motor and actuator, minimizing the movable range and device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire set of imaging lenses is shifted to correct hand shake, then the correction effect is achieved, but the weight and volume increase resulting in larger actuator dimension
Solution Approach 1:
The patent divides the imaging lens system into multiple individual lenses rather than moving the entire lens set. Each lens can be independently actuated by separate actuators, allowing selective movement of only necessary lens elements to achieve hand shake correction. This segmentation reduces the total mass that needs to be moved and enables more compact actuator design.
Solution Approach 2:
The patent introduces a prism element that can rotate about an axis parallel to the optical axis to correct hand shake in one dimension, while imaging lenses correct shake in perpendicular dimensions. This multi-dimensional approach distributes the correction burden across different components and movement axes, reducing the requirement for large-scale lens displacement.
2Adaptability or versatility
If a deflecting structure is added to enable long zoom optical system in portable device, then the optical functionality is achieved, but the device volume increases
Solution Approach 1:
The patent integrates the deflecting prism within the existing lens barrel structure, nesting the deflection optical path inside the compact housing. The prism is positioned between lens groups and utilizes the same structural support framework, avoiding additional external volume while enabling the required optical path folding for long zoom functionality in portable form factor.
3Reliability
If the prism is rotated about axis parallel to optical axis for shake correction, then the correction is achieved, but the surrounding image rotates and anti-shake effect is lost
Solution Approach 1:
The patent applies different correction strategies to different spatial dimensions of hand shake. The prism rotates about an axis perpendicular to the optical axis to correct shake in the tangential direction, while imaging lenses are actuated to correct shake in the radial direction. This localized, dimension-specific correction approach prevents the image rotation problem that would occur with prism rotation about the optical axis.
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 approach effectively reduces performance influence on the image surface, achieving efficient anti-shake correction in a miniaturized portable device while maintaining image quality.
Implementation Method 1
When an electric current is applied to the coil, the coil moves the carrier of the lens along a direction of an optical axis of the lens under an effect of an electromagnetic force
Implementation Method 2
a reflection member, which reflects a light beam incident from an object side along a first optical axis toward a direction along a second optical axis
Data Source
AI summary
The present disclosure provides a camera device, which includes an anti-shake mechanism in the camera device including a deflection optical system without making the device large. An optical system is provided and includes, from an object side, a reflection member, an imaging lens set, and an imaging element. Image shake around an axis perpendicular to a plane formed by a first optical axis (O1) and a second optical axis (O2) is corrected by rotation of the reflection member, and image shake around the first optical axis (O1) is corrected by movement of a first set of lenses immediately following the reflection member.