Imaging Adapter Optical Axis Adjustment for Interchangeable Lens Alignment
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Solution Overview
Problem
In imaging devices where an interchangeable lens and a device main body are attached to an adapter, optical axis deviations occur due to machining tolerances and attachment position errors, leading to user-unfriendliness, especially during telephoto zooming.
Innovation Solution
An adapter with a first positioning portion for perpendicular positioning of the interchangeable lens and a second positioning portion for horizontal positioning of the device main body, allowing adjustable optical axes in orthogonal directions, using sliders and adjustment screws for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an interchangeable lens and a device main body are attached to an adapter, then the imaging device can use different types of interchangeable lenses, but optical axis deviation occurs due to machining tolerance and attachment position errors
Solution Approach 1:
The adapter serves as an intermediary component between the interchangeable lens and the device main body. It includes a first positioning portion that engages with the lens-side engaging portion and a second positioning portion that engages with the main-body-side engaging portion. These positioning portions act as mediators to correct optical axis deviations caused by machining tolerances and attachment position errors, ensuring accurate optical alignment while maintaining interchangeability of lenses.
2Manufacturing precision
If the optical axis deviation is corrected by adjusting the optical axis positions, then accurate image centering can be achieved, but the adjustment mechanism becomes complex and difficult to operate
Solution Approach 1:
The adapter design creates an equipotential adjustment system where the first positioning portion and second positioning portion are configured to work together in a balanced manner. The positioning portions engage with corresponding engaging portions on the lens and main body, distributing the adjustment load and enabling smooth, intuitive operation. This balanced design allows users to correct optical axis deviations without encountering excessive mechanical stress or complex adjustment procedures.
3Manufacturing precision
If a rigid positioning structure is used to maintain optical axis alignment, then manufacturing precision is improved, but the device cannot accommodate weight differences between lenses and the device main body
Solution Approach 1:
The adapter incorporates dynamic positioning capabilities through its first and second positioning portions. Rather than using a completely rigid structure, the positioning portions are designed to engage flexibly with the lens-side and main-body-side engaging portions. This dynamic engagement allows the adapter to accommodate weight differences between various interchangeable lenses and the device main body while maintaining accurate optical axis alignment. The positioning mechanism can adapt to different weight configurations without compromising alignment precision.
Data Source
AI summary
An adapter includes an attachment unit that has one surface side to which an interchangeable lens having a lens-side engaging portion is attached, and the other surface side to which a device main body having a main-body-side engaging portion is attached. In the adapter, the attachment unit includes: a first positioning portion that is engaged with the lens-side engaging portion and performs positioning of the interchangeable lens at least in a perpendicular direction; and a second positioning portion that is engaged with the main-body-side engaging portion and performs positioning of the device main body at least in a horizontal direction, the position of the optical axis of the interchangeable lens is adjustable in the horizontal direction in a state in which the interchangeable lens is attached to the attachment unit, and the position of the optical axis of the device main body is adjustable in the perpendicular direction in a state in which the device main body is attached to the attachment unit.