Lens Apparatus In-Focus Range Adjustment via Tilt Control
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Solution Overview
Problem
Users face difficulty in intuitively understanding how to adjust the imaging optical system to change the in-focus range during tilt imaging, making it challenging to achieve the desired in-focus range.
Innovation Solution
A lens apparatus with an optical system that includes an optical member capable of widening or narrowing the in-focus range by moving the optical member, and a processor that determines the relationship between the moving direction of the optical member and the in-focus range adjustment, setting information for the movement based on this determination, and an image pickup apparatus with a processor that captures object images and determines the necessary movement to achieve the desired in-focus range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the focal plane is tilted to adjust the in-focus range, then the in-focus range can be changed, but the user has difficulty in intuitively understanding how to move the imaging optical system to achieve the desired in-focus range
Solution Approach 1:
The patent displays an in-focus range indicator on the display unit that visually shows the current in-focus range to the user. This feedback mechanism allows the user to see the effect of optical member movement in real-time, making it intuitive to understand how to adjust the in-focus range without needing to comprehend the complex optical system mechanics.
Solution Approach 2:
The patent introduces an intermediary display interface that mediates between the user and the optical system. Instead of directly showing the complex optical member movements, the system uses an in-focus range indicator as an intermediary representation that simplifies the user's understanding and control of the in-focus range adjustment.
2Measurement precision
If the user moves the optical system to confirm the in-focus range change, then the desired in-focus range can be achieved, but the operation becomes time-consuming and complex
Solution Approach 1:
The patent calculates and displays the in-focus range indicator in advance based on the current optical member position and tilt angle. This preliminary calculation allows the user to see the predicted in-focus range before making adjustments, enabling more direct and efficient control without repeated trial-and-error movements.
Solution Approach 2:
The real-time display of the in-focus range indicator provides continuous feedback to the user during adjustment, allowing for precise and rapid achievement of the desired in-focus range without time-consuming trial-and-error movements.
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
Enables users to easily and intuitively adjust the in-focus range during tilt imaging by providing visual feedback and determining the optimal movement of the optical member, simplifying the process of changing the in-focus range.
Implementation Method 1
Tilt imaging can tilt a focal plane so as to entirely or partially focus on an object plane that is tilted from a plane perpendicular to the optical axis of the imaging optical system
Data Source
AI summary
A lens apparatus includes an optical system including an optical member configured to widen or narrow an in-focus range by moving the optical member, and a processor configured to determine a relationship between a moving direction of the optical member and widening or narrowing of the in-focus range, and to set information regarding a movement of the optical member using a determination result.