3D Test Chart for Photographic Module Adjustment
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Solution Overview
Problem
Conventional testing devices for photographic arrangements are inefficient, requiring extensive movement and space, leading to increased costs and reduced imaging quality due to tilt and shift issues between the photographic module and image sensor, and are prone to mechanical failures during adjustment.
Innovation Solution
A 3D test chart with non-overlapping test patterns of different depths allows for simultaneous capture of imaging quality and tilt data with minimal movement of the photographic arrangement, reducing the need for large testing devices and improving adjustment efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional testing devices move the photographic module extensively to obtain functional relationships, then complete testing data can be collected, but testing time increases and productivity decreases
Solution Approach 1:
The patent introduces a 3D test chart with multiple layers at different depths (first layer, second layer, third layer) instead of conventional 2D test charts. This three-dimensional arrangement allows the photographic module to capture depth information and functional relationships without extensive movement, as different focal planes are simultaneously represented in the multi-layer structure.
Solution Approach 2:
The test chart is pre-configured with multiple layers at specific depth positions before testing begins. The layers are arranged in advance with predetermined spacing and patterns, allowing the testing system to obtain complete functional relationship data through minimal movement, as the depth variations are already prepared in the test chart structure.
2Measurement precision
If the photographic module is moved with large distance to collect data of higher focus point, then complete focus range data is obtained, but mechanical clashes or bonding glue failure occurs
Solution Approach 1:
Instead of moving the photographic module extensively in one dimension to achieve different focus points, the patent uses a 3D test chart where multiple layers at different depths provide the focus variation information. This transforms the problem from a one-dimensional movement task to a three-dimensional static structure, eliminating the need for large displacements that cause mechanical failures.
3Ease of operation
If conventional testing devices are designed with large size to accommodate movement space, then complete testing can be performed, but device complexity and cost increase
Solution Approach 1:
The patent replaces the need for large linear movement space with a compact 3D test chart structure. By stacking multiple test layers in the depth dimension, the system achieves complete testing capability within a small volume, eliminating the requirement for bulky mechanical adjustment mechanisms and large device footprint.
Solution Approach 2:
The test chart employs a nested multi-layer structure where multiple test patterns are stacked at different depths within a compact volume. This nested arrangement allows the small-sized device to contain all necessary testing elements that would traditionally require a large spatial configuration.
4Measurement precision
If extensive movement is performed during testing, then comprehensive functional relationships are obtained, but adjustment time increases
Solution Approach 1:
The multi-layer test chart is prepared in advance with layers positioned at specific depths corresponding to different focal planes. This preliminary configuration means that during testing, the system only needs minimal movement to access pre-positioned depth information, dramatically reducing the time required to obtain comprehensive functional relationships compared to conventional step-by-step movement methods.
Data Source
AI summary
A 3D test chart, an adjusting arrangement, a forming method, and an adjusting method thereof are disclosed. The 3D test chart provides a plurality of test patterns arranged at different depths. When testing a photographic arrangement, the photographic arrangement is only required to move for one time or even does not need to be moved, so as to obtain an image containing information of different depths, so that the testing and adjusting process of the photographic arrangement can be easily achieved.