Wedge Optical Element Jitter Compensation Mechanism
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Solution Overview
Problem
Existing camera hand-shake correction methods require custom drive mechanisms for each lens set and photographing element, making them cumbersome and difficult to integrate into various camera designs, and they often require actuators in multiple directions to adjust the optical axis in a two-dimensional plane, increasing size and complexity.
Innovation Solution
The use of four wedge optical elements with a same structure, where the third and fourth wedge optical elements can be rotated relative to the optical axis to correct beam direction, allowing for optical jitter compensation with a single actuator, thus reducing power consumption and enhancing performance while simplifying design by eliminating the need for custom drive mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lens shift type hand-shake correction is used to correct the optical axis by moving the lens set, then the optical axis can be adjusted, but a dedicated drive mechanism must be designed for each type of lens set, increasing device complexity
Solution Approach 1:
The patent uses a universal photographing element shift mechanism that can be applied to different lens sets without redesigning the drive mechanism for each lens type. The photographing element is shifted relative to the lens set using a common drive mechanism, making the hand-shake correction function adaptable to various lens configurations.
Solution Approach 2:
The patent replaces the mechanical lens shift mechanism with a photographing element shift mechanism. Instead of moving the lens set physically, the photographing element is shifted relative to the lens set, simplifying the mechanical drive system while achieving the same optical axis correction effect.
2Reliability
If photographing element shift type hand-shake correction is used to keep the photographing element constant with respect to the optical axis, then the optical axis can be adjusted, but a dedicated drive mechanism must be designed for each photographing element, increasing device complexity
Solution Approach 1:
The patent employs a universal drive mechanism that can drive the photographing element for different camera types. By making the photographing element shift relative to the lens set in a standardized manner, the same drive mechanism can be used across different camera configurations, reducing design complexity.
3Device complexity
If a movable prism is used to refract light and correct the optical axis, then the design can be simplified, but the optical unit has a certain volume and is not easy to integrate into the body of various cameras
Solution Approach 1:
The patent replaces the movable prism optical correction system with a photographing element shift mechanism. Instead of using a bulky movable prism to refract light, the photographing element is shifted relative to the lens set, achieving optical axis correction with a more compact structure that is easier to integrate into camera bodies.
4Reliability
If actuators in different directions are used to adjust the optical axis in a two-dimensional plane, then the optical axis can be corrected in both dimensions, but the number of actuators increases, increasing device complexity and size
Solution Approach 1:
The patent uses a dynamic photographing element shift mechanism that can achieve two-dimensional optical axis correction through a single actuator. By allowing the photographing element to shift in multiple directions relative to the lens set, the system achieves two-dimensional correction capability without requiring separate actuators for each dimension.
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 enables effective optical jitter compensation with low power consumption and high performance, allowing for compact integration into various camera designs by using a single actuator to control the relative rotation of the wedge optical elements, thereby improving the camera's ability to correct optical axis adjustments.
Implementation Method 1
Each of the wedge optical elements has a minimum thickness dimension and a maximum thickness dimension at a first edge and a second edge opposite to each other, respectively. A connection line between the first edge and the second edge forms a symmetry axis of the each of the wedge optical elements.
Data Source
AI summary
An imaging correction unit and an imaging module are provided. The imaging correction unit has an optical axis and includes four wedge optical elements with the same structure. The wedge optical elements are disposed sequentially on the optical axis. Each of the wedge optical elements has a minimum thickness dimension at a first edge and a maximum thickness dimension at a second edge. A connection line between the first edge and the second edge forms a symmetry axis of the each of the wedge optical elements. When a beam transmitted along the optical axis of the imaging correction unit passes sequentially through the wedge optical elements and is imaged at a center of an imaging surface, the symmetry axis of any one of the four wedge optical elements is at an angle of 90 degrees relative to the symmetrical axis of one of adjacent wedge optical elements.