Optical Diffuser with Complex Lens for 180-Degree Beam
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Solution Overview
Problem
Existing portable lights do not effectively produce a beam of light with a broad beam width of up to 180° and non-uniform light intensity, which is required for specific applications such as personal distress marker lights in hostile or dangerous situations.
Innovation Solution
A portable light system incorporating an optical diffuser with a complex lens structure, including a central conical recess and raised annular surfaces, which is movable over the light source to produce a beam of light with a broad beam width and non-uniform intensity, meeting specifications like GSA A-A-59176A.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional portable light is used, then the device is simple and portable, but the beam width is limited and light intensity is uniform
Solution Approach 1:
The optical diffuser is divided into multiple functional zones: a central conical recess for generating the core beam, raised annular surfaces for beam expansion, and frustro-conical sloping sides for light redirection. Each segment performs a specific optical function to collectively achieve the 180° beam width while maintaining a manageable overall structure.
Solution Approach 2:
Different regions of the optical diffuser have different optical properties and functions. The central conical recess creates a focused light path, while the raised annular surfaces and frustro-conical sides redirect light at specific angles. This local differentiation of optical characteristics enables precise control over beam width and intensity distribution without requiring the entire structure to be complex.
2Adaptability or versatility
If a complex lens structure is added to achieve broad beam width and non-uniform intensity, then the light beam meets specific application requirements, but the device complexity increases
Solution Approach 1:
The optical diffuser is designed as a multi-functional component that simultaneously achieves broad beam width (up to 180°), non-uniform light intensity distribution, and portability. The single integrated structure performs multiple optical functions: beam expansion, intensity modulation, and directional control, making it adaptable to various applications such as distress marker lights without requiring multiple separate components.
Solution Approach 2:
The holder mechanism allows the optical diffuser to be dynamically positioned and removed, enabling the portable light to switch between different operational modes. When the diffuser is attached, it provides the specialized broad beam pattern; when removed, the light returns to its conventional configuration, offering versatility without permanently increasing device complexity.
3Manufacturing precision
If the optical diffuser is made with precise complex lens surfaces, then the beam width and intensity distribution are controlled accurately, but the manufacturing precision requirements increase
Solution Approach 1:
The optical diffuser employs curved surfaces including a conical recess, annular surfaces, and frustro-conical sloping sides. These geometric forms, while complex in function, can be manufactured using standard molding or grinding techniques for optical components. The curvature of these surfaces naturally guides light rays to achieve the desired beam expansion and intensity distribution, reducing the need for extremely tight tolerances compared to flat-facet designs.
4Adaptability or versatility
If the optical diffuser is made movable on the light, then the device can be adapted for different uses, but the ease of operation decreases
Solution Approach 1:
The holder is designed to be manually operated by the user, who simply attaches or removes the optical diffuser from the light body. This self-service mechanism allows the user to configure the device for different applications without requiring complex adjustment mechanisms, tools, or technical knowledge. The simplicity of attachment and removal maintains ease of operation while providing adaptability.
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 system effectively generates a beam of light with the desired broad beam width and non-uniform intensity, enhancing its utility for applications like personnel location beacons, while maintaining portability and versatility.
Implementation Method 1
The complex lens may include a central conical recess and at least one raised annular surface having frustro-conical sloping sides... producing a beam of light having a broad beam width and a non-uniform intensity
Data Source
AI summary
An optical diffuser for a light may comprise an optical body having a substantially flat base at one end thereof and a complex lens structure at the opposing end thereof. The complex lens may have a plurality of curved optical surfaces and may produce a beam of light having a non-uniform light intensity. The optical diffuser may be attached to a light by a holder, and the holder may be movable on the light to place the optical diffuser in front of a light source.