Lens Axis Inclination Compensation for Image Shake Correction

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Solution Overview

Problem

Existing imaging systems face challenges in correcting image shake and aligning lenses effectively when there are inclinations in the drive axes relative to the image sensor axes, leading to misalignment and image distortion.

Innovation Solution

A lens device with a drive mechanism that moves lenses along intersecting axes to correct for inclinations, using a processor to acquire inclination information and control the movement of lenses based on this information, with communication interfaces for external devices and non-volatile memory for storing and updating this data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a drive mechanism moves lenses along drive axes that are inclined relative to the image sensor axes, then the lens device can be manufactured with simpler alignment requirements, but the image becomes misaligned and distorted on the image sensor

Engineering Contradiction:

Improvealignment requirementsVSAvoidimage alignment

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent changes the operational parameters of the drive mechanism by calculating correction values that account for the inclination between drive axes and image sensor axes. The control unit adjusts the drive amounts along each axis based on these correction values, transforming the fixed inclined geometry into a dynamically corrected system that achieves precise image alignment despite manufacturing tolerances.

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If the drive axes are made perfectly aligned with the image sensor axes, then image alignment is improved, but the device complexity and adjustment difficulty increase

Engineering Contradiction:

Improveimage alignmentVSAvoidadjustment complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system performs self-correction by automatically calculating and applying alignment correction values based on the known inclination parameters of the drive mechanism. The control unit uses stored correction data to autonomously adjust lens positions, eliminating the need for complex manual alignment procedures or additional alignment hardware.

Inventive Principle:

Principle #25Self-service

3Manufacturing precision

If manual alignment adjustment mechanisms are added to correct axis inclinations, then image alignment improves, but the device complexity and operation difficulty increase

Engineering Contradiction:

Improveimage alignmentVSAvoidoperation difficulty

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent replaces manual mechanical alignment adjustment mechanisms with an automated control system. The control unit calculates and applies correction values digitally, substituting complex mechanical adjustment mechanisms with software-based correction that automatically compensates for axis inclinations during lens driving operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20260016702A1Lens device, imaging apparatus, operation method of lens device, operation method of imaging apparatus, and program

Publication Date: 2026.01.15 FUJIFILM CORP

AI summary

A processor of a lens device is configured to acquire inclination information related to at least one of an inclination of a first drive axis of a drive mechanism with respect to a first axis of an image sensor or an inclination of a second drive axis of the drive mechanism with respect to a second axis of the image sensor, and perform, with respect to the drive mechanism, control of moving a movement lens along at least one of the first axis or the second axis based on the inclination information.