Feature-Point Focal Plane Rotation for Tilt Focus Control
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Solution Overview
Problem
Existing imaging apparatuses struggle to set a desired tilting effect and in-focus range, making it difficult to achieve a desired image.
Innovation Solution
An imaging apparatus with a tilt driving unit and focus driving unit that allows the focal plane to rotate around an axis defined by a feature point, enabling precise control of the tilt effect and in-focus range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an optical system includes lens portions for generating tilt effect and shift effect, then the focal plane can be tilted to achieve entire well focus on tilted object plane, but the system lacks functions to set desired tilting effect and in-focus range
Solution Approach 1:
The patent applies parameter changes by allowing the focal plane to rotate around an axis defined by a feature point of the object. This enables dynamic adjustment of the tilt angle and in-focus range through controlled rotation, transforming the optical system's parameters to achieve desired imaging effects. The rotation mechanism allows continuous variation of tilt parameters while maintaining the feature point as the rotation center, providing both adaptability and ease of operation.
2Manufacturing precision
If the focal plane is tilted to achieve entire well focus on tilted object plane, then imaging capability is improved, but the in-focus range and blurring range cannot be precisely controlled
Solution Approach 1:
The patent segments the control function into two independent components: the tilt driving unit that controls the rotation of the focal plane around the feature point, and the focus driving unit that independently adjusts the in-focus position. This segmentation allows precise control of the in-focus range and blurring range separately, achieving focus precision without requiring a complex integrated control mechanism.
3Adaptability or versatility
If the focal plane rotates around an axis defined by a feature point, then desired tilt effect and in-focus range can be set, but the optical system becomes more complex
Solution Approach 1:
The patent achieves multi-functionality by combining the tilt driving unit and focus driving unit in a unified optical system. The tilt driving unit not only rotates the focal plane to achieve tilt effects but also works cooperatively with the focus driving unit to control the in-focus range. This universal design allows the system to perform multiple functions (tilt adjustment, focus control, in-focus range adjustment) without proportionally increasing device complexity.
Data Source
AI summary
A camera system comprising: a lens barrel including a plurality of optical members and configured to image an object; an image pickup unit configured to capture an image formed by the lens barrel; TS driving unit configured to tilt a rotating object plane by driving at least one of a sixth lens unit and an eighth lens unit or the image pickup unit; a focus driving unit configured to drive a second lens unit to change an in-focus position; and a camera CPU configured to recognize a feature point of the object; wherein the rotating object plane is rotatable around an axis defined from the feature point by the TS driving unit.