Integrated Collimation-Diffuser Lens for Flood Illuminators
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Solution Overview
Problem
Conventional flood illuminator systems require separate optical elements for collimation and diffusion, leading to increased complexity, cost, and potential safety issues due to multiple components.
Innovation Solution
A single optical element with both diffusing and focusing surfaces, such as a combination lens element, is used to replace two individual lenses, providing an intensity profile of light within a field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate optical elements are used for collimation and diffusion, then the optical functions are performed correctly, but the device complexity and cost increase
Solution Approach 1:
The patent combines the collimation function (first optical element) and diffusion function (second optical element) into a single integrated optical element. This merging reduces the total number of components while maintaining both optical functions, directly resolving the contradiction between reliable optical performance and device complexity
Solution Approach 2:
The single optical element is designed to perform multiple functions simultaneously - both collimating the light from the source and diffusing it to create the desired intensity profile. This multi-functionality eliminates the need for separate specialized components, reducing complexity while preserving optical performance
2Reliability
If separate optical elements are used for collimation and diffusion, then the optical functions are performed correctly, but the manufacturing cost increases
Solution Approach 1:
By merging two separate optical elements into one, the patent reduces material costs, assembly costs, and quality control expenses. The single element can be manufactured as one piece rather than requiring precision alignment and assembly of multiple components, directly addressing the cost issue
3Reliability
If separate optical elements are used for collimation and diffusion, then the optical functions are performed correctly, but the alignment requirements increase
Solution Approach 1:
The integration of collimation and diffusion functions into a single optical element eliminates the need for precise alignment between multiple components. The internal geometry of the single element provides fixed spatial relationships between the collimating and diffusing surfaces, removing alignment as an installation and adjustment concern
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 simplifies optical and alignment requirements, reduces costs and mechanical parts, and enhances laser safety by consolidating functions into a single element.
Implementation Method 1
The first surface includes a diffusing surface configured to diffuse the emission light to form diffused light
Implementation Method 2
The second surface includes a focusing surface. A combination of the first surface and the second surface is configured to provide an intensity profile of light emitted within a field of view
Data Source
AI summary
The present disclosure relates to optical systems and vehicles, which may incorporate lidar sensors. An example optical system includes a light-emitter device configured to emit emission light. The optical system also includes an optical element including a first surface and an opposing second surface. The first surface includes a diffusing surface configured to diffuse the emission light to form diffused light. The second surface includes a focusing surface. A combination of the first surface and the second surface are configured to provide an intensity profile of light emitted within a field of view of the optical system.