Camera Lens Alignment with Light Source Using Reference Chart
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for aligning camera lenses with light sources in 3D image sensing modules are inefficient, leading to misalignment issues that result in unused pixels and prolonged production line efficiency due to the need for numerous adjustment steps, which cannot confirm the precise alignment of illumination and shooting areas.
Innovation Solution
A method utilizing an aligning system with a reference camera, alignment element, and fixture, where a reference chart is used to adjust the light source and camera lens in parallel planes to ensure alignment, reducing alignment errors and image processing time by comparing illumination and shooting results against preset specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional AOI technology with robotic arm and automatic control system is used to align camera lens with light source, then the assembling location can be detected, but the illumination area and shooting area alignment cannot be confirmed
Solution Approach 1:
A reference chart is introduced as an intermediary object between the light source and camera lens. The reference chart carries both illumination marks (for light source alignment) and shooting marks (for camera lens alignment), enabling simultaneous verification of both areas' alignment status through a single measurement system
Solution Approach 2:
The reference chart serves multiple functions: it acts as a measurement target for AOI detection, provides illumination reference marks for light source alignment, provides shooting reference marks for camera lens alignment, and enables both illumination area and shooting area alignment verification through a single component
2Manufacturing precision
If adjusting procedure based on camera lens or light source with reference datum plane is performed, then alignment can be achieved, but the production line efficiency declines due to long adjustment time
Solution Approach 1:
The reference chart is pre-configured with both illumination marks and shooting marks at their respective correct positions before the alignment process begins. This preliminary setup eliminates the need for sequential adjustment steps, allowing both light source and camera lens to be aligned simultaneously in a single operation
Solution Approach 2:
The alignment process is optimized to perform both illumination area alignment and shooting area alignment in a continuous single operation rather than separate sequential steps. The AOI system continuously monitors both reference marks on the reference chart simultaneously, eliminating idle time between adjustments
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
The method effectively reduces alignment errors, minimizes pixel sacrifice, and shortens image processing time by ensuring precise alignment between the light source and camera lens, enhancing production efficiency.
Implementation Method 1
The light source emits visible light, infrared light or near-infrared light as the sensing light
Implementation Method 2
the camera lens shoots the reference chart on the alignment element to acquire a shooting result
Data Source
AI summary
A method for aligning a camera lens with a light source is provided. The method is used in an aligning system. The aligning system includes an alignment element, a reference camera and a fixture. Firstly, the reference camera shoots a reference chart on the alignment element. Then, the light source is placed on the fixture. The light source illuminates the alignment element to generate an illumination result. The reference camera shoots the illumination result. If the illumination result does not comply with a preset specification represented by the reference chart, the fixture adjusts the light source. Then, the camera lens is placed on the fixture. Then, the camera lens shoots the reference chart on the alignment element to acquire a shooting result. If the shooting result does not comply with the preset specification, the fixture adjusts the camera lens.