Touch Display Lens Control for Low-Latency Focus Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lens control systems for cameras, such as those used in moving image shooting, are complex, costly, and prone to operational delays and inaccuracies, particularly when using follow focus or manual focus rings, and autofocus often leads to erroneous focus target selection.
Innovation Solution
A lens system that includes a touch display and a processor to control a virtual screen via scroll operations, allowing precise control of lens optical elements like focus, zoom, and diaphragm through intuitive touch interface interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If follow focus is used to control lens in moving image shooting, then focus control capability is improved, but device complexity increases due to requiring belt, gear, and other equipment
Solution Approach 1:
The patent replaces the mechanical follow focus system (belt, gear, ring sensor) with a touch display interface that directly controls the lens optical system. Users interact with a virtual screen on the touch display to adjust focus, zoom, and diaphragm settings without any mechanical transmission components, thereby eliminating mechanical complexity while maintaining control capability.
Solution Approach 2:
The patent introduces a processor as an intermediary between the touch display and the lens optical system. The processor receives touch input operations from the user and translates them into appropriate lens control commands, serving as a software-based mediator that replaces the need for mechanical intermediaries like belts and gears.
2Ease of operation
If follow focus is used to control lens, then focus control is achieved, but loss of time occurs due to backlash of gear and detection delay of ring sensor
Solution Approach 1:
The patent eliminates mechanical components (gear, belt, ring sensor) that cause detection delays and backlash. Instead, it uses a touch display with processor-based control that directly communicates with the lens system, achieving real-time response without mechanical transmission delays or sensor detection lags.
3Manufacturing precision
If manual focus ring is used for operation, then focus adjustment is possible, but ease of operation deteriorates because it is difficult to operate while viewing live view video
Solution Approach 1:
The patent moves the control interface from the physical dimension (manual focus ring on the camera body) to the visual dimension (virtual screen on the touch display). Users can see the live view video and control settings simultaneously on the same display device, eliminating the need to look away at a physical ring while operating.
4Manufacturing precision
If manual focus ring is used, then focus control is achieved, but stability deteriorates due to camera shake occurrence
Solution Approach 1:
The patent replaces the manual focus ring operation with touch display control. Since the touch display is held separately from the camera body or mounted on a stable surface, users can operate the focus controls without holding the camera, thereby eliminating camera shake caused by manual ring operation.
5Ease of operation
If autofocus is used to mitigate manual operation disadvantages, then operation ease is improved, but reliability deteriorates due to erroneous selection of focus target
Solution Approach 1:
The patent enables users to select specific regions or areas on the virtual screen that correspond to desired focus targets. By touching or scrolling on specific portions of the display, users can precisely control which part of the scene receives focus, combining the simplicity of automated control with the precision of manual target selection.
Data Source
AI summary
A lens system includes a lens optical system, a touch display, and at least one processor configured to control a part of a virtual screen to be displayed on the touch display in response to a user's scroll operation on the touch display, and controls the lens optical system such that a state of the lens optical system works with a part of the virtual screen to be displayed on the touch display.