Camera Image Sensor Locking Mechanism for Power Reduction
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Solution Overview
Problem
Existing image stabilization systems in cameras lack a power-efficient solution for both locking and unlocking image sensor elements, leading to increased power consumption and heating issues, particularly in sensor stabilization modes.
Innovation Solution
A locking device for image sensor elements that allows adjustable modes between locked and unlocked positions using overlapping locking holes and protrusions, enabling engagement or disengagement without powered actuators, and incorporating a support member for improved stability and guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor stabilization is enabled by allowing movement of the image sensor element, then image stabilization performance is improved, but power consumption increases and heating occurs
Solution Approach 1:
The locking device dynamically switches between locked and unlocked states based on operational requirements. During image stabilization operations, the device transitions to unlocked state to allow sensor movement. During transport or non-operational phases, it transitions to locked state to prevent movement, thereby eliminating continuous power consumption and heating associated with active stabilization systems.
2Use of energy by moving object
If a locking mechanism is added to prevent movement of the image sensor element, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The locking mechanism is segmented into two independent locking arrangements that can be superimposed or separated. Each locking arrangement has its own locking holes and can operate independently, allowing modular integration into the existing sensor holder structure without requiring a complete redesign of the stabilization system.
Solution Approach 2:
The locking arrangements are designed to be self-aligning through the superimposition of locking holes, eliminating the need for complex positioning mechanisms or powered actuators. The mechanical design inherently guides the locking protrusions into the correct positions, reducing overall system complexity while maintaining effective locking functionality.
3Adaptability or versatility
If two locking arrangements are superimposed to provide locked and unlocked modes, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The locking holes in the superimposed arrangements are designed with asymmetric positioning and sizing, creating distinct locked and unlocked states through the relative alignment of holes. This asymmetric design provides clear mechanical differentiation between modes while accommodating reasonable manufacturing tolerances through the inherent mechanical guidance of the locking protrusions.
Data Source
AI summary
A locking device for locking an image sensor element in a camera, a camera comprising such a locking device, and a method for controlling image stabilization in a camera comprising such a locking device are disclosed. The locking device comprises two locking arrangements which are superimposed such that one or more locking holes of the locking arrangements at least partly overlap each other in pairs so as to form two open sections adapted to each receive a locking protrusion. The locking device is adjustable between a locked mode and an unlocked mode.