Lens Diaphragm Mode Select Mechanism for Click and Smooth Operation
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Solution Overview
Problem
Conventional diaphragm devices with click mechanisms in lenses can interfere with other camera functions, such as video recording, by producing vibrations and click sounds, and do not provide smooth operation for continuous aperture adjustments or 'maniacal' photography styles.
Innovation Solution
A diaphragm device with a mode select mechanism that allows switching between click mode and non-click mode, using an elastically supported locking element and entrapment body with click grooves, enabling the click mechanism to be deactivated for smooth operation without affecting the ability to set precise aperture numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a click mechanism is provided in the diaphragm setting ring, then aperture setting precision is improved, but harmful vibrations and click sounds are generated that interfere with video recording
Solution Approach 1:
The patent applies dynamics by making the click mechanism selectively activatable rather than always engaged. The switching mechanism allows the click mechanism to be activated only when needed for precise aperture setting, and deactivated during video recording to eliminate harmful vibrations and sounds. This dynamic switching resolves the contradiction by adapting the system state based on operational requirements.
Solution Approach 2:
The patent changes the operational parameter of the click mechanism from a fixed state to a variable state. By introducing a switching mechanism that can activate or deactivate the click mechanism, the system can adjust its behavior to match different operational modes (photography vs. video recording), thereby eliminating harmful effects during video recording while maintaining precision during photography.
2Loss of time
If a click mechanism is provided in the diaphragm setting ring, then aperture setting speed is improved, but operational smoothness is reduced for continuous aperture variation
Solution Approach 1:
The patent makes the operational characteristics of the diaphragm setting ring dynamically adjustable. The switching mechanism allows users to select between click mechanism activation (for fast aperture setting) and deactivation (for smooth continuous adjustment). This resolves the contradiction by allowing the system to adapt its operational characteristics based on the desired usage scenario.
Solution Approach 2:
The patent makes the diaphragm setting ring universally applicable to different operational styles by providing both click and smooth operation modes. The switching mechanism enables the same device to serve both purposes: rapid aperture selection with click feedback and smooth continuous adjustment without click interference, thereby resolving the contradiction through multi-functionality.
3Measurement precision
If a click mechanism is provided in the diaphragm setting ring, then aperture setting accuracy is improved, but device complexity increases
Solution Approach 1:
The patent achieves multi-functionality by integrating a switching mechanism that controls the click mechanism's activation. This allows the same structural components to serve dual purposes: providing click feedback when activated and smooth operation when deactivated. The switching mechanism itself is integrated into the existing diaphragm setting ring structure, minimizing additional complexity while enabling precise control over the click mechanism's operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The diaphragm device enhances picture-taking quality by eliminating unwanted sounds and vibrations, provides ease of operation by allowing selection between click and non-click modes, and maintains operational feel, preventing errors due to skill differences.
Implementation Method 1
a locking portion (5) provided with an elastically supported locking element (4)
Data Source
AI summary
Diaphragm device of a lens includes a click mechanism with a locking portion disposed in one of a stationary tube and a diaphragm setting ring, the locking portion having an elastically supported locking element, and an entrapment body disposed on the other of the stationary tube and the diaphragm setting ring. The entrapment body having an entrapment surface wherein a plurality of entrapment portions are formed for catching the locking element pressed against the entrapment surface at one of a plurality of aperture numbers when the diaphragm setting ring is turned. A mode select mechanism for switching between a click mode wherein the locking element is pressed against the entrapment surface and a non-click mode wherein a click function is deactivated with the locking element and the entrapment surface separated from each other by altering the position of at least one of the locking portion and the entrapment body.