Finder Unit Transmission Display Illumination Control
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Solution Overview
Problem
In image capturing systems, the illumination of a transmission-type display apparatus can lead to reduced visibility due to dominant illumination light in the outer regions of the image capturing range, causing uneven illumination and making it difficult for users to distinguish the focused area and image capturing range effectively.
Innovation Solution
A finder unit with a transmission-type display section and a display controller that changes display states based on illumination, reducing the transmission ratio in specific regions to improve visibility by adjusting the display of the outer regions, allowing for better recognition of the focused area and image capturing range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the entire outer region of the image capturing range is displayed with illumination, then the illumination light is introduced effectively, but the visibility is undermined due to dominant illumination light in the outer region
Solution Approach 1:
The patent applies local quality by differentiating the display treatment between the outer region and the focused area. The display section selectively lowers the transmission ratio only in the outer region while maintaining normal transmission in the focused area, creating localized optical properties that address the visibility problem without compromising overall illumination effectiveness.
Solution Approach 2:
The patent segments the image capturing range into distinct regions: the outer region and the focused area. By applying different transmission ratio controls to these segmented regions, the system can independently manage illumination effects in each zone, allowing the outer region to be dimmed while preserving visibility in the focused area.
2Loss of information
If the transmission ratio is lowered in the outer region, then the visibility of the focused area is improved, but the area for displaying information is reduced
Solution Approach 1:
The patent maintains adequate display area by applying the transmission ratio reduction only locally to the outer region rather than globally across the entire display section. This localized approach preserves the display functionality in the focused area while still achieving the visibility improvement needed in the outer region.
Solution Approach 2:
By segmenting the display section into the outer region and the focused area, the patent allows the outer region to be dimmed for improved visibility while the focused area maintains full display capabilities, thus preserving adequate overall display area for information presentation.
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
Enhances user visibility by reducing the impact of illumination on the outer regions, allowing for easier identification of the focused region and image capturing range, even under varying lighting conditions.
Implementation Method 1
a transmission-type display apparatus adopting a polymer-dispersed liquid crystal that can switch between transmission and dispersion of light
Data Source
AI summary
Provided is a finder unit including: a transmission-type display section that displays information as overlaid on a subject image; and a display controller that, when an illuminating section illuminates the display section, changes a first display state to a second display state, where in the first display state, a first region which is at least a part of an outer region of an effective image capturing range is displayed so that a transmission ratio of the subject image in the first region is lowered, and in the second display state, a second region which is a part of the outer region and is smaller in area than the first region is displayed so that a transmission ratio of the subject image in the second region is lowered.