Preset Zoom Optical Apparatus with Auto Focus Integration
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Solution Overview
Problem
In optical apparatuses with preset zoom functions, users must perform focusing adjustments for different objects at various distances, making the image-taking process cumbersome.
Innovation Solution
The integration of an auto focus (AF) system with the preset zoom control allows for automatic focusing during both position and speed preset zoom operations, eliminating the need for manual focusing adjustments by determining the appropriate AF operation based on the zoom direction and position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual focusing adjustment is required for each preset position, then focusing precision can be achieved, but the ease of operation deteriorates due to cumbersome operations
Solution Approach 1:
The system performs automatic focusing at each preset position without requiring manual user intervention. The control unit automatically drives the focusing lens unit to achieve focus at each stored preset position, making the system serve itself rather than requiring continuous user operation.
Solution Approach 2:
The system pre-stores multiple preset positions in memory before image capture. During operation, it automatically sequentially moves to each preset position and performs focusing automatically, eliminating the need for users to manually adjust focus at each position during actual image-taking.
2Ease of operation
If automatic focusing is integrated with preset zoom control, then the ease of operation improves by eliminating manual focusing, but the device complexity increases
Solution Approach 1:
The patent combines the preset zoom control function with automatic focusing control into a single integrated system. The control unit manages both zoom lens position and focusing lens position, coordinating their movements automatically based on stored preset information, thereby reducing overall system complexity despite adding automation.
Solution Approach 2:
The control unit serves multiple functions: it stores preset positions, controls zoom lens movement, and simultaneously controls focusing lens movement. This multi-functional approach consolidates what could be separate complex subsystems into a single coordinated controller.
Data Source
AI summary
There are provided an optical apparatus and a camera system in which preset image-taking is possible without performing focusing adjustment for objects, even during image-taking of the objects at different distances by using a preset function. In the optical apparatus comprising a storage section which stores preset information, a preset control section which performs preset operation by using the preset information, a focusing control section which controls focusing operation, and a controller which controls the preset operation by preset control section and the focusing operation by the focus control section.