Camera Lens Accessory Power Allocation for Orientation Changes
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Solution Overview
Problem
Existing lens apparatuses face challenges in efficiently managing power distribution among movable members such as aperture stops, image stabilizing lenses, and focus lenses due to limited available power from the image pickup apparatus, especially when orientation changes affect power requirements.
Innovation Solution
A system that includes a first and second drive unit, memory, and processor to control power distribution based on orientation changes, adjusting the upper limit values for each drive unit to optimize power usage and allocate surplus power to other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the accessory drives multiple movable members (aperture stop, image stabilizing lens, focus lens, zoom lens) simultaneously, then the functionality and performance of the lens apparatus is improved, but the power consumption increases and exceeds the limited available power from the image pickup apparatus
Solution Approach 1:
The patent applies dynamics by making the power allocation ratios variable based on operating conditions. The control unit dynamically adjusts the power allocation ratio for each movable member according to the detected orientation and usage state, transitioning from fixed to flexible power distribution. This allows the system to adapt power consumption to actual needs, maintaining functionality while managing limited power supply effectively.
Solution Approach 2:
The patent changes the parameter of power allocation ratio based on orientation and usage state. By detecting the orientation of the imaging device and the usage state of each movable member, the system adjusts the power allocation parameters dynamically. This parameter change approach enables optimized power distribution across different operating scenarios, resolving the contradiction between maintaining versatility and reducing power consumption.
2Reliability
If the lens apparatus operates in vertical orientation requiring more power for image stabilizing and focus lenses, then the image quality and stability are improved, but the total power consumption exceeds the available power limit
Solution Approach 1:
The patent applies local quality by allocating different power resources to different movable members based on their specific needs and the current orientation. Instead of uniform power distribution, the system provides targeted power allocation where image stabilizing and focus lenses receive appropriate power in vertical orientation, while aperture stop and zoom lens receive adjusted power. This localized power quality adjustment maintains image stability while managing total power consumption within limits.
Solution Approach 2:
The system dynamically adjusts power allocation ratios based on detected orientation. When vertical orientation is detected, the control unit modifies the power distribution dynamically to balance image stability requirements with power constraints. This dynamic adjustment allows the system to maintain reliability for critical functions while adapting total power consumption to available supply.
3Use of energy by moving object
If the accessory reduces power allocation to some movable members to save power, then the power consumption is reduced, but the performance and functionality of those members deteriorates
Solution Approach 1:
The patent applies partial action by allocating power selectively to movable members based on current usage state and orientation. Instead of providing full power to all members continuously, the system provides partial power allocation tailored to actual needs. The control unit determines which members require full power and which can operate with reduced power, achieving energy efficiency while maintaining essential performance through targeted partial action rather than uniform reduction.
Data Source
AI summary
An accessory for use with an image pickup apparatus includes a first drive unit for moving a first movable member, a second drive unit for moving a second movable member, one or more memories storing instructions, and one or more processors that, upon execution of the instructions, operate to control power used for driving the first drive unit and the second drive unit. In a case where an orientation of the accessory changes from a first orientation to a second orientation, power used for driving one of the first drive unit or the second drive unit increases while power used for driving the other of the first drive unit and the second drive unit decreases. The one or more processors operate to change an upper limit value of the power used for driving the first drive unit and second drive unit based on the orientation of the accessory.