Conversion Lens Module for Structured Light Pattern Scaling
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Solution Overview
Problem
The resolution of structured light patterns decreases with increasing distance from the structured light generation unit to the object, making it impractical for larger patterns due to reduced resolution.
Innovation Solution
An optical device comprising a structured light generation unit and a conversion lens module, where the conversion lens module is arranged between the structured light generation unit and the projection surface, allowing for adjustment of the structured light pattern size by altering the equivalent focal length or working distance, thereby controlling the beam diffusion angles to scale the pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the distance between the structured light generation unit and the object is increased, then the coverage region of the structured light is widened, but the resolution of the structured light pattern on the object surface decreases
Solution Approach 1:
A conversion lens module is introduced as an intermediary optical component between the structured light generation unit and the object. This lens module receives the structured light beams and converts their traveling directions to project the pattern onto the object surface at a desired location and size, enabling independent control of coverage and resolution
Solution Approach 2:
The conversion lens module allows dynamic adjustment of the structured light pattern size by changing optical parameters such as equivalent focal length and working distance. By varying these parameters, the system can scale the pattern while maintaining resolution, resolving the contradiction between coverage area and pattern size
2Area of stationary object
If the size of the structured light pattern on the object surface is increased, then the coverage region is expanded, but the resolution of the pattern reduces
Solution Approach 1:
The conversion lens module enables dynamic scaling of the structured light pattern size through adjustable focal length and working distance parameters. This dynamic control allows the system to adapt the pattern dimensions while maintaining resolution, rather than being fixed by the generation unit distance
Solution Approach 2:
By changing the equivalent focal length and working distance parameters of the conversion lens module, the system can independently control the pattern size and resolution. This parameter adjustment allows the pattern to be scaled up or down while preserving the required resolution for accurate applications
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 solution enables flexible scaling of structured light patterns, maintaining or improving resolution regardless of the distance, allowing for effective application in various fields such as 3D contour regeneration and anti-counterfeiting recognition.
Implementation Method 1
the conversion lens module is arranged between the structured light generation unit and a screen (projection surface)... After plural light beams of the structured light pass through the conversion lens module, the plural light beams are projected on the projection surface
Data Source
AI summary
A method for scaling a structured light pattern and an optical device using the method are provided. The optical device includes a structured light generation unit and a conversion lens module. The conversion lens module is arranged between the structured light generation unit and a projection surface. The structured light generation unit outputs a structured light. After plural light beams of the structured light pass through the conversion lens module, the plural light beams are projected on the projection surface, so that a structured light pattern is formed on the projection surface. By controlling the conversion lens module to change traveling directions of the light beams of the structured light, the structured light pattern on the projection surface is correspondingly enlarged or shrunken.