360-Degree Optical Scanner Using Passive MEOM Mirror
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Solution Overview
Problem
Factory environments with potentially hazardous machinery pose risks of personal injury, and existing safety equipment is often complex and costly, necessitating a simpler and more cost-effective solution for ensuring operator safety.
Innovation Solution
A 360-degree optical scanning system using a dual-gimbal mirror and micro electro-optical-mechanical (MEOM) devices to direct light without a motor, allowing for depth evaluation and safety event detection without rotating mirrors, integrated with a control system to manage safety responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If motor-driven rotating mirrors are used to achieve 360-degree scanning, then scanning coverage is improved, but device complexity and cost increase
Solution Approach 1:
The patent removes the motor component from the scanning system entirely. Instead of using a motor-driven rotating mirror, the invention employs a passive mirror assembly that achieves 360-degree scanning through optical geometry alone, thereby eliminating the complexity and cost associated with motorized actuation while maintaining full scanning coverage
Solution Approach 2:
The patent replaces the mechanical motor-driven rotation system with an optical solution using a specifically shaped mirror surface. The mirror's geometry (hyperbolic, parabolic, or elliptical cross-section) enables the light beam to sweep 360 degrees through reflection alone, substituting mechanical motion with optical manipulation
2Adaptability or versatility
If motor-driven rotating mirrors are used to achieve 360-degree scanning, then scanning coverage is improved, but cost increases
Solution Approach 1:
By extracting the motor component from the system, the patent eliminates the need for expensive motorized actuation mechanisms. The cost reduction is achieved by using a simple passive mirror assembly with a specially shaped surface that provides 360-degree scanning capability without requiring any powered components
Solution Approach 2:
The patent employs a cost-effective mirror assembly that can be manufactured using standard optical fabrication techniques. The mirror with its specific cross-sectional geometry (hyperbolic, parabolic, or elliptical) is a relatively simple optical element compared to motorized scanning systems, making the overall device more affordable
3Speed
If rotating mirrors are used for scanning, then scanning speed is improved, but reliability decreases due to moving parts
Solution Approach 1:
The patent removes all rotating and moving parts from the scanning mechanism. The mirror assembly remains stationary while the light beam achieves 360-degree coverage through the geometric configuration of the mirror surface. This elimination of mechanical motion maintains scanning speed while dramatically improving reliability by removing failure-prone moving components
Solution Approach 2:
Instead of moving the mirror to achieve scanning (traditional approach), the invention keeps the mirror stationary and uses its geometric shape to redirect the light beam in a 360-degree pattern. This inversion of the scanning mechanism—using optical geometry rather than mechanical motion—preserves scanning speed while eliminating reliability issues associated with moving parts
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 reduces complexity and cost while enhancing safety by enabling reliable 360-degree scanning and automatic machinery shutdown in hazardous situations, improving the safety of factory environments without the need for motor-driven mirrors.
Implementation Method 1
a scan mirror with a reflective surface shaped to provide a 360 degree scan capability when a light beam is reflected across an area to be monitored
Implementation Method 2
an adjustable mirror that redirects light from the optical source to the scan mirror
Data Source
AI summary
Apparatus and methods for operating an area scanner having a motorless scanning mechanism provide for enhanced operation of the area scanner. In an embodiment, an area scanner includes a micro-optical-electromechanical device to direct the scan of light from an optical source over a desired area.