Dual-Optical Lens Focus Control for Stereoscopic Alignment
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Solution Overview
Problem
Existing lens systems for stereoscopic imaging face challenges in focusing both optical systems simultaneously due to complex operations and potential erroneous adjustments, leading to difficulty in achieving proper focus.
Innovation Solution
A camera system with a lens apparatus featuring two optical systems and an image pickup apparatus that includes a processor to calculate and adjust the focus detection positions of both optical systems based on evaluation values, allowing for simultaneous focusing through a control apparatus that moves the optical systems relative to each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single operation member is used to switch between left and right diopter adjustment and focusing, then device complexity is reduced, but ease of operation deteriorates due to complicated operations and potential erroneous adjustments
Solution Approach 1:
The patent divides the focusing operation into two independent parts: diopter adjustment for one optical system and focusing for both optical systems. By providing separate operation members for each function, the system avoids the confusion of a single multi-functional control, allowing users to perform each adjustment independently without erroneous operations.
Solution Approach 2:
The patent introduces a control unit as an intermediary that receives signals from operation members and automatically determines the second focus detection position based on the first. This intermediary processing layer ensures coordinated control of both optical systems while maintaining simple user interaction through dedicated operation members.
2Ease of operation
If separate operation members are provided for diopter adjustment and focusing, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent merges the control logic for both optical systems into a single control unit that processes signals from the operation members. This centralization of control functions allows multiple operation members to work together seamlessly without requiring separate complex control circuits for each optical system.
Solution Approach 2:
The control unit serves multiple functions: it processes diopter adjustment signals, processes focusing signals, determines focus detection positions for both optical systems, and coordinates their simultaneous operation. This multi-functional design reduces overall system complexity despite having multiple operation members.
3Ease of manufacture
If manual switching between diopter adjustment and focusing is used, then ease of manufacture is improved, but productivity deteriorates due to time-consuming operations
Solution Approach 1:
The patent implements an automatic feedback mechanism where the control unit receives signals from operation members, determines the appropriate focus detection positions for both optical systems, and automatically adjusts them. This eliminates manual switching and trial-and-error adjustments, significantly improving focusing efficiency while maintaining simple manufacturing.
Solution Approach 2:
The system performs self-adjustment by automatically determining the second focus detection position based on the first position and the relative positions of the optical systems. This self-service capability eliminates the need for manual intervention in coordinate transformation calculations, improving productivity without complicating manufacturing.
Data Source
AI summary
A control apparatus for a camera system that includes a lens apparatus including a first optical system and a second optical system and configured to move them relative to each other, and an image pickup apparatus including an image sensor and detachably attachable to the lens apparatus includes a processor configured to acquire a first evaluation value of the first optical system at a first focus detection position corresponding to the first optical system, determine a second focus detection position corresponding to the second optical system based on an first object image formed by the first optical system and a second object image formed by the second optical system, acquire a second evaluation value of the second optical system at the second focus detection position, and move the first optical system and the second optical system based on the first evaluation value and the second evaluation value.