Dual-Opening Lens Mount With Synchronized Filter Movement
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Solution Overview
Problem
Interchangeable lenses for stereoscopic imaging face challenges in simultaneously closing two openings to prevent left and right exposure correcting timings from shifting, leading to deteriorated image quality.
Innovation Solution
A lens mount design that allows filters to be simultaneously retracted from and inserted into two openings, using mechanisms such as motors, gears, and rotating or translating members to synchronize the movement of filters for both optical systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If filters are attached to openings on the attached side of an interchangeable lens, then filters can be installed for stereoscopic imaging, but it becomes difficult to simultaneously close two openings to prevent exposure timing shifts
Solution Approach 1:
The patent combines two separate filter attachment operations into a single integrated filter unit that simultaneously covers both openings. The filter member is designed as one piece that engages with both openings at the same time, ensuring that both filters are installed and positioned synchronously, thereby preventing exposure timing shifts while maintaining filter installation capability
Solution Approach 2:
The patent introduces a filter holder as an intermediary component that mechanically links the two filters together. This filter holder acts as a mediator that ensures both filters move and position simultaneously, solving the exposure timing synchronization problem while still allowing filters to be attached to the lens openings
2Ease of operation
If separate filters are used for each opening, then each optical system can have independent filter control, but left and right exposure correcting timings shift, deteriorating image quality
Solution Approach 1:
The patent merges the control mechanisms for both filters into a single integrated control system. The filter member is designed so that a single operation simultaneously controls both filters, ensuring they move together and maintain synchronized positioning, thereby preventing exposure timing alignment issues while preserving operational simplicity
3Reliability
If a single filter member covers both openings, then exposure timing is synchronized, but the device complexity increases with additional synchronization mechanisms
Solution Approach 1:
The patent segments the filter system into a modular filter member that can be attached as a single unit. This segmentation allows the complex synchronization function to be isolated in one replaceable component, reducing the overall system complexity while maintaining reliable exposure timing synchronization through the integrated design of the filter member itself
Data Source
AI summary
A lens mount is configured to enable a lens apparatus that includes a first optical system and a second optical system to be attached to and detached from an image pickup apparatus. The lens mount includes a cover member having a first opening for the first optical system and a second opening for the second optical system, and a filter member movable between a first state in which the filter member retreats from the first opening and the second opening and a second state in which the filter member enters the first opening and the second opening. The filter member becomes in the first state by simultaneously retreating from the first opening and the second opening, and becomes in the second state by simultaneously entering the first opening and the second opening.