Mobile Terminal Camera Module ToF Nesting
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Solution Overview
Problem
Mobile terminals with multiple cameras face challenges in minimizing occlusion errors and spatial efficiency due to differences in camera positions, leading to inaccuracies in synthesizing RGB and shape images.
Innovation Solution
The arrangement of cameras on a mobile terminal, where a ToF camera is positioned between two RGB cameras on a straight line, with holders arranged to minimize the distance between lens centers and reduce occlusion, along with the use of overlapping PCBs and reinforcement plates to optimize space and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple cameras are arranged on the mobile terminal to capture various types of images, then the functionality and image quality are improved, but the space occupied by the camera module increases and occlusion errors occur due to position differences
Solution Approach 1:
The patent implements a nested arrangement where the ToF camera is positioned within the triangular space formed by three RGB cameras. Specifically, the ToF camera module is located at the center of the triangle, with its holder nested among the holders of the three RGB cameras. This nesting allows multiple camera functions to coexist in a compact configuration, maximizing space utilization while maintaining all capture functionalities.
Solution Approach 2:
The patent transitions from a two-dimensional planar arrangement to a three-dimensional spatial configuration. The cameras are arranged in a triangular prism structure where RGB cameras form the vertices and the ToF camera is positioned at the centroid in the third dimension. This dimensional change allows for compact packaging while maintaining optimal optical paths and minimizing occlusion through vertical stacking and angular positioning.
2Area of stationary object
If cameras are positioned closer together to reduce space occupation, then spatial efficiency is improved, but occlusion errors increase due to reduced distance between lens centers
Solution Approach 1:
The patent applies local quality optimization by positioning each camera at specific locations with distinct functional characteristics. The three RGB cameras are placed at the vertices of an equilateral triangle to capture color information from different angles, while the ToF camera is positioned at the centroid to measure depth. This localized functional assignment ensures that each camera operates in its optimal position, minimizing occlusion errors while maintaining compact overall dimensions.
Solution Approach 2:
The patent introduces the ToF camera as an intermediary element that mediates between the multiple RGB cameras. By positioning the ToF camera at the center, it serves as a reference point for depth measurement that complements the color information from surrounding RGB cameras. This intermediary positioning creates a hierarchical measurement structure where the central ToF camera provides depth context that reduces occlusion errors in synthesizing images from multiple RGB cameras at different positions.
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 configuration minimizes occlusion errors and enhances spatial efficiency by ensuring accurate image synthesis and compact camera module design, improving the terminal's ability to capture detailed object information with reduced space occupation.
Implementation Method 1
The ToF camera may acquire a shape image using data based on a time for which an emitted wave is reflected and returned from an object
Data Source
AI summary
Provided is a mobile terminal including a plurality of cameras to minimize an occurrence of occlusion, wherein the first lens part, the second lens part, and the ToF lens part are provided on one surface of the body to be exposed outside, the first holder, the second holder, and the ToF holder each have a rectangular transverse-section, and the first holder, the second holder, and the ToF holder are arranged such that the ToF lens part is located between the first lens part and the second lens part.


