Prism Camera Layout for Thin Terminal Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The miniaturization of portable terminal devices is hindered by the need for multiple lenses in cameras, which increase the device's thickness due to their optical axis being parallel to the device's vertical line, making it difficult to achieve both high photographing performance and compact design.
Innovation Solution
Incorporating a prism and lens group in the camera with an optical axis not parallel to the camera's vertical line, along with a diaphragm positioning to reduce the camera's thickness, and using a prism with a refractive index greater than or equal to 1.7 to enhance light refraction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple lenses are configured in the camera to ensure better photographing performance, then the photographing performance is improved, but the thickness of the terminal device increases due to parallel alignment of optical axes
Solution Approach 1:
The patent changes the traditional parallel alignment of optical axes in the thickness direction to a non-parallel arrangement where at least one optical axis is inclined relative to the vertical line of the light-transmitting area. This dimensional reconfiguration allows multiple lenses to be arranged in a more compact configuration, reducing the overall thickness of the terminal device while maintaining photographing performance through expanded field of view capability (≥55°).
2Reliability
If multiple optical elements are stacked in the thickness direction to ensure photographing performance, then the photographing performance is improved, but the size of the terminal in the thickness direction becomes relatively large
Solution Approach 1:
The patent transitions from a one-dimensional stacking arrangement (all optical elements aligned in the thickness direction) to a multi-dimensional arrangement where optical elements are positioned at different angles and locations. By inclining the optical axis of at least one lens relative to the vertical line of the light-transmitting area and achieving a field of view ≥55°, the design distributes optical elements more efficiently in three-dimensional space, reducing the required thickness while maintaining photographing performance.
Solution Approach 2:
The patent introduces asymmetry in the optical path configuration by making the optical axis of at least one lens non-parallel to the vertical line of the light-transmitting area. This asymmetric arrangement breaks the traditional symmetric stacking pattern, allowing for a more compact and space-efficient configuration that reduces the terminal's thickness while preserving imaging quality through the expanded field of view.
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 reduces the camera's thickness, allowing for a more compact design while maintaining high imaging quality and a field of view greater than or equal to 55°, thus aligning with the miniaturization trend of portable terminals.
Implementation Method 1
light transmitting through the light-transmitting area sequentially pass through the object side of the prism, the image side of the prism
Implementation Method 2
light sequentially pass through the object side of the prism, the image side of the prism, and the lens group to irradiate onto the photosensitive element
Data Source
AI summary
A terminal device, a camera, and a photographing apparatus are provided. The terminal device includes a first board and a first camera; the first board includes a light-transmitting area; the first camera includes a prism, a lens group, and a photosensitive element, the prism includes an object side and an image side, light transmitting through the light-transmitting area sequentially pass through the object side of the prism, the image side of the prism, and the lens group to irradiate onto the photosensitive element, a field of view of the light that the photosensitive element can receive is within a preset value range, and an optical axis of the lens group is not parallel to a vertical line of the light-transmitting area; and the preset value range is greater than or equal to 55°.