Power Zoom Control Stability in Digital Camera Lenses
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Solution Overview
Problem
Digital photographing apparatuses face challenges in stabilizing power zoom operations due to high power consumption, which can interfere with shutter and iris driving, leading to inefficient energy management and potential mechanical errors.
Innovation Solution
The apparatus includes a power zoom performer and a release controller that prohibits power zoom operations when the shutter or iris is driven, allowing for varifocal compensation and energy management through power consumption monitoring, ensuring stable power zoom control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power zoom operation is performed during shutter or iris driving, then zoom functionality is maintained, but power consumption increases and mechanical errors occur
Solution Approach 1:
The system proactively prevents power zoom operation when shutter or iris driving is detected by checking power consumption information before allowing zoom. This preliminary anti-action avoids the harmful interaction between power zoom and shutter/iris operations, eliminating mechanical errors and ensuring reliable operation during critical phases.
Solution Approach 2:
The lens storage unit continuously monitors and stores power consumption information, which is fed back to the release controller. The controller uses this feedback to dynamically determine whether to permit or prohibit power zoom operation, creating a closed-loop control system that adapts to real-time power conditions and prevents problematic operations.
2Reliability
If power zoom operation is prohibited during shutter or iris driving, then mechanical stability is improved, but zoom responsiveness decreases
Solution Approach 1:
The system dynamically adjusts zoom operation permissions based on real-time power consumption conditions rather than using a static prohibition. The release controller continuously evaluates power consumption information and adapts its control decisions, allowing zoom when power conditions are favorable and prohibiting it when shutter or iris operations are detected, thus optimizing both reliability and responsiveness.
Solution Approach 2:
The system performs preliminary checks of power consumption information before permitting power zoom operation. By anticipating potential conflicts with shutter or iris operations and preventing them in advance, the system maintains mechanical stability while enabling zoom functionality during safe operational windows, thus preserving responsiveness without sacrificing reliability.
3Loss of energy
If power consumption is monitored and used to prohibit power zoom, then energy efficiency is improved, but system complexity increases
Solution Approach 1:
The lens storage unit serves multiple functions: it stores power consumption information for current operations, provides feedback to the release controller, and enables dynamic decision-making about zoom operations. This multi-functional component reduces the need for separate dedicated monitoring systems, thereby improving energy efficiency without proportionally increasing system complexity.
Solution Approach 2:
The lens storage unit autonomously monitors and stores its own power consumption information without requiring external intervention. The release controller simply reads this pre-prepared information and makes control decisions based on it. This self-service approach to power monitoring minimizes the complexity of the overall control system while achieving improved energy efficiency.
Data Source
AI summary
A digital photographing apparatus and a method of controlling the same. The digital photographing apparatus includes a body unit and an exchangeable lens installed to the body unit, wherein the exchangeable lens includes: a power zoom performer for performing a power zoom operation; and an iris for adjusting an amount light penetrating through an imaging lens, the body unit includes: an image pickup device for generating an image signal by capturing the light; a shutter for controlling light exposure of the image pickup device; and a release controller for controlling operations of the shutter and the iris, and the power zoom operation is prohibited when the release controller starts to drive the shutter or the iris. Accordingly, the power zoom operation is stably controlled.