Optical Fiber Measurement Device for High-Speed Shape Inspection
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Solution Overview
Problem
Existing contact-type three-dimensional shape measuring instruments face challenges in achieving high-speed shape measurement due to the weight and size of the movable components, which can lead to deviations in the relative positions of the components, resulting in inaccurate measurements.
Innovation Solution
A measurement device is designed with a small, lightweight movable body, incorporating a first movable body with a reflector and a second movable body with a light emission point, light entry point, and optical system. The device uses a driving mechanism and controller to adjust the position of the second movable body based on the intensity of the reflected light, with optical fibers reducing the size and weight of the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional movable components are used in contact-type three-dimensional shape measuring instruments, then measurement accuracy can be maintained, but the weight and size of the movable body increase, reducing measurement speed
Solution Approach 1:
The patent replaces conventional mechanical light sources and detectors with optical fiber-based systems. The optical fibers transmit light and detect reflected light without requiring bulky mechanical components, thereby reducing the weight and size of the movable body while maintaining measurement functionality
Solution Approach 2:
The patent uses optical fibers to create a lightweight copy of the light transmission and detection functions. Instead of using physical light sources and detectors directly in the movable body, the system transmits light through optical fibers that can be made extremely thin and lightweight, achieving the same functional outcome with minimal mass
2Measurement precision
If conventional movable components are used in contact-type three-dimensional shape measuring instruments, then measurement accuracy can be maintained, but the size of the movable body increases, leading to position deviations
Solution Approach 1:
The patent replaces mechanical light sources and detectors with optical fiber-based systems. The optical fibers transmit light and detect reflected light without requiring bulky mechanical components, thereby reducing the weight and size of the movable body while maintaining measurement functionality
Solution Approach 2:
The patent changes the physical parameters of the light transmission system by using optical fibers with specific diameter and material properties. This allows the system to achieve the required light transmission and detection capabilities with minimal dimensional constraints, preventing position deviations
3Productivity
If optical fibers are used to reduce the size and weight of the movable body, then measurement speed improves, but the system complexity increases
Solution Approach 1:
The patent makes the optical fiber serve multiple functions: it acts as both the light transmission medium and the light detection element. By using the optical fiber for both transmitting outgoing light and receiving reflected light, the system reduces the need for separate components, thereby reducing overall system complexity despite the advanced nature of optical fiber technology
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 solution enables the creation of a measurement device with a small, lightweight movable body, enhancing the speed of shape measurement while maintaining accurate relative positions between components, thus preventing measurement errors.
Implementation Method 1
at least one optical fiber, in which light emitted from the light emission point is emitted onto the reflector via the optical system, reflected light that is the light reflected from the reflector enters the light entry point
Implementation Method 2
a second movable body including a light emission point, a light entry point, and an optical system
Implementation Method 3
reflected light that is the light reflected from the reflector enters the light entry point
Data Source
AI summary
A measurement device includes: a first movable body including a reflector; a second movable body including a light emission point, a light entry point, and an optical system; a driving mechanism that adjusts a position of the second movable body; a controller that controls the driving mechanism; and at least one optical fiber. Light emitted from the light emission point is emitted onto the reflector via the optical system, and reflected light that is the light reflected from the reflector enters the light entry point. The controller causes the driving mechanism to adjust the position of the second movable body, based on an intensity of the reflected light that has entered the light entry point. The light emission point or the light entry point is an end of the at least one optical fiber.