Mobile Terminal Flash Support Frame for Shadow Reduction
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Solution Overview
Problem
Mobile terminals face challenges in securing appropriate light for subjects during close-up image capture due to the main body obstructing ambient light and flash illumination being uneven or creating shadows, especially when the flash is embedded within the device.
Innovation Solution
A mobile terminal design featuring a rear cover with an opening for the camera and flash, a support frame surrounding the flash, and a cover glass to ensure even light distribution and minimize shadows, allowing the flash to be embedded in an airtight manner for improved light management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the flash is embedded in the mobile terminal close to the camera, then the device structure is compact, but light is concentrated on a specific portion of the subject creating uneven illumination
Solution Approach 1:
The flash is nested within a support frame structure that protrudes from the rear cover, with the flash positioned inside the frame's enclosed space. This nesting arrangement allows the flash to be integrated into the device while maintaining an extended position relative to the camera, enabling even light distribution across the subject without compromising device compactness.
2Illumination intensity
If the flash is spaced apart from the camera at a distance equal to or greater than a predetermined distance, then light distribution is improved, but shadows of the subject are generated
Solution Approach 1:
The support frame is designed with specific structural features including side walls that extend toward the camera and a bottom wall with a light emitting surface. This localized structural design directs light emission toward the subject while the frame's geometry controls shadow formation, allowing the flash to be positioned at an optimal distance that provides even illumination without creating harmful shadows.
3Stability of the object's composition
If the main body of the mobile terminal blocks ambient light during close-up capture, then device structure is maintained, but appropriate amount of light for the subject cannot be secured
Solution Approach 1:
The support frame protrudes from the rear cover in a direction extending away from the device main body, creating additional spatial dimension for light emission. This dimensional extension allows light to reach the subject without being blocked by the device body, while the frame's enclosed structure maintains device integrity and protects internal components.
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
This design ensures uniform light distribution for subjects during close-up captures, reducing shadows and enhancing image quality by allowing even light irradiation and minimizing shadow generation, thus facilitating better image segmentation and expression of textures and three-dimensionality.
Implementation Method 1
a flash (124) surrounding the camera (121b)
Implementation Method 2
light irradiated from the flash is not evenly irradiated to an entirety of the subject and is concentrated only on a specific portion of the subject
Data Source
AI summary
The present invention is to provide a mobile terminal and a method for controlling the same that may secure an appropriate amount of light for a subject and minimize a shadow of the subject even when capturing an image in a close-up manner using a camera embedded in the mobile terminal. One aspect of the present disclosure proposes a mobile terminal including a rear cover having an opening defined therein, a camera disposed to be optically exposed to the outside through the opening, a flash surrounding the camera, wherein the flash is disposed to be optically exposed to outside through the opening, a support frame surrounding the flash and being attached to one surface of the rear cover corresponding to a periphery of the opening while being externally exposed to outside through the opening, and a cover glass attached to the support frame to cover the camera and the flash.