Imaging Device Zoom Focus Lens Control for Movie Effects
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Solution Overview
Problem
Existing camera technologies do not enable easy creation of movie images with impressive video effects that combine continuous changes in focus and zoom states, requiring high operational skill from users.
Innovation Solution
An imaging device with a zoom lens and focus lens that automatically changes between in-focus and out-of-focus states, and different angles of view, using a control unit to drive the lenses and create movie image data with a display unit for user settings and preview.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual operation of zoom lens and focus lens is used to create movie images with impressive video effects, then the video effect quality is improved, but the operational skill requirement increases
Solution Approach 1:
The imaging device automatically controls the zoom lens and focus lens based on subject distance detection, enabling the system to perform the complex coordinated lens operations itself without requiring manual operational skill from the user. The control unit automatically decides shooting magnification and calculates drive amounts for both lenses simultaneously
Solution Approach 2:
The patent replaces manual mechanical operation with an automated control system that uses optical detection (subject distance measurement) and electronic control to automatically coordinate the zoom and focus lens movements, substituting the mechanical skill-based operation with an automated sensing-and-control system
2Ease of operation
If automated control of zoom lens and focus lens is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it detects subject distance, decides shooting magnification, calculates drive amounts for both zoom and focus lenses, and coordinates their simultaneous operation. This multi-functionality consolidates what would otherwise require separate systems into a single integrated control unit
Solution Approach 2:
The patent combines the control functions for zoom lens and focus lens into a single integrated control system that simultaneously manages both lenses based on subject distance detection, merging what would otherwise be separate control mechanisms into one unified system
Data Source
AI summary
Provided are: an imaging sensor that captures subject light via a photographic optical system provided with a zoom lens and a focus lens; a display unit that displays a through image based upon an imaging signal from the imaging sensor; a predetermined area setting unit that sets a predetermined area on the through image displayed on a display surface of the display unit in a state which is set to a first angle of view or a second angle of view different from the first angle of view by driving the zoom lens; a movement control unit that moves positions of the zoom lens and the focus lens by controlling drive of the zoom lens and the focus lens, so as to change from a first state, which is set to the first angle of view and serves as an in-focus state focused on the predetermined area set by the predetermined area setting unit to a second state, which is set to the second angle of view and serves as an out-of-focus state defocused on the predetermined area, or from the second state to the first state over a predetermined time; and a movie image data creation unit that creates movie image data, which includes a movie image changed from the first state to the second state by the movement control unit over the predetermined time, based upon the imaging signal from the imaging sensor.