Lens Barrel State Management for Quick Startup
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Solution Overview
Problem
Interchangeable lens cameras experience delays in startup due to the lens barrel not being in its shortest state, requiring time for contraction and extension when switching from off to on, affecting portability and quick startup.
Innovation Solution
An imaging device with a lens barrel featuring an adjustable optical system that can change between focusing and non-focusing states, utilizing a discriminating unit and control unit to determine the barrel's state and adjust it accordingly upon activation, allowing for immediate startup in the extended photographing state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lens barrel is kept in the shortest state for portability, then portability is improved, but startup time increases because the lens must extend when activated
Solution Approach 1:
The lens barrel is automatically extended to the photographing setup state when the camera is activated, rather than remaining in the shortest state. This preliminary action ensures the lens is in the correct position before photography begins, eliminating startup delay while maintaining portability when the camera is off.
Solution Approach 2:
The lens barrel is designed to be dynamically adjustable between the shortest state (for portability) and the extended photographing state (for operation). The system automatically transitions between these states based on camera activation, optimizing both portability and startup performance.
2Loss of time
If the lens barrel is not in the shortest state when mounted, then startup can be immediate, but portability is reduced due to increased length
Solution Approach 1:
The lens barrel dynamically changes length based on camera activation state. When the camera is off, the lens remains in the shortest state for portability. Upon activation, it automatically extends to the photographing state, providing immediate startup without compromising portability during transport.
Solution Approach 2:
The system performs the lens extension action automatically upon camera activation, ensuring the lens is prepared for photography before the user needs to take a picture. This eliminates the need for manual lens extension and reduces startup time.
3Loss of time
If the lens barrel automatically extends upon activation, then startup properties are improved, but device complexity increases due to additional control mechanisms
Solution Approach 1:
The lens barrel system is self-regulating, automatically detecting its own state and transitioning between shortest and extended positions based on camera activation. The control unit monitors lens position and triggers extension only when needed, eliminating the need for complex external control mechanisms.
Solution Approach 2:
The system incorporates feedback mechanisms that detect the lens barrel's current state and automatically control its extension or retraction. This closed-loop control ensures the lens is in the correct position without requiring complex manual intervention or additional control components.
Data Source
AI summary
An imaging device comprises a lens barrel having an optical system with an adjustable focal point, and has a first state can focus relative to an imaging face, and a second state can not focus relative to the imaging face, a changing unit for changing the lens barrel from the second state to the first state when the imaging unit is activated, a discriminating unit which discriminates whether the state of the barrel is the first state or the second state, and a control unit which, at a time of activating the imaging unit, changes the lens barrel to the first state by the changing unit if it is discriminated that the state of the barrel is the second state, and which maintains the first state if it is discriminated that the state of the barrel is the first state.