Optical Multi-Axis Displacement Measurement with Integrated Beam Splitters
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Solution Overview
Problem
Existing displacement measurement devices for rigid bodies require multiple separate modules to detect movement along different axes, leading to large sizes and complex control requirements, making simultaneous multi-axis measurement challenging.
Innovation Solution
A single measurement device using an optical system with a test mirror, lenses, beam splitters, and sensors to simultaneously measure multi-axis displacement of a rigid body by analyzing light reflections and angles, allowing for compact and integrated multi-axis detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate modules are used to detect movement along different axes, then measurement precision is improved, but device complexity and size increase
Solution Approach 1:
The patent merges multiple separate detection modules into a single integrated measurement device. The optical system combines multiple light sources, beam splitters, and sensors into one unified structure that can simultaneously detect movements along X, Y, and Z axes, as well as tilting angles, eliminating the need for multiple independent modules while maintaining measurement precision
Solution Approach 2:
The measurement device is designed with multi-functionality to perform various detection tasks simultaneously. A single device can measure linear movements along three axes and angular tilts, making it a universal measurement tool that replaces multiple specialized modules, thereby reducing overall device complexity and integration requirements
2Measurement precision
If multiple separate modules are used to detect movement along different axes, then measurement precision is improved, but the size and volume of the detection system increase
Solution Approach 1:
The patent consolidates multiple detection functions into a single compact measurement device. By integrating the optical paths and detection components for X, Y, Z axis movements and tilting angles into one unified structure, the system achieves precise multi-axis measurement without requiring the cumulative volume of multiple separate modules
Solution Approach 2:
The optical components are arranged in a nested configuration where beam splitters and light paths are integrated within a compact optical train. The multiple light sources and sensors are positioned to share common optical paths and structural support, allowing the detection system to maintain high precision while occupying minimal space
3Adaptability or versatility
If multiple separate modules are used to detect movement, then measurement capability is improved, but control complexity increases
Solution Approach 1:
The measurement device provides universal detection capability for all six degrees of freedom (three linear movements and three angular tilts) through a single integrated system. This eliminates the need for separate control mechanisms for each detection module, significantly simplifying the control architecture while maintaining full multi-axis measurement versatility
Solution Approach 2:
The patent combines multiple detection functions into one unified measurement device with a single control interface. The integrated optical system processes all detection signals through a common data acquisition and processing pathway, making the device easier to operate and control compared to coordinating multiple independent modules
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 device enables simultaneous detection of multi-axis movement of a rigid body, facilitating efficient and integrated control of the device's movement, reducing size and complexity compared to traditional multi-module systems.
Implementation Method 1
a first lens configured to transmit incident light incident on a reference point defined on the test mirror and reflected light reflected onto the test mirror
Implementation Method 2
a second lens disposed along an optical axis of the reflected light and configured to transmit incident light as parallel light
Implementation Method 3
a first beam splitter disposed between the first lens and the second lens, and configured to reflect light from the first light source to define incident light incident on the first lens and transmit the reflected light transmitted through the first lens and being incident
Implementation Method 4
a second beam splitter disposed between the first lens and the second lens, and configured to reflect a part of the reflected light transmitted through the first beam splitter and transmit a remaining part of the reflected light to be incident on the second lens
Data Source
AI summary
The present invention is characterized by comprising: a test mirror that can be tilted along the X, Y, and Z axes; a first lens through which incident light and reflected light are transmitted; a second lens disposed along the reflected light; a first sensor that detects the movement of the test mirror; a first light source disposed perpendicular to the reflected light; a first beam splitter that forms the incident light and transmits the reflected light; a second beam splitter that reflects a part of the reflected light that has been transmitted through the first beam splitter and makes same incident on the second lens; a second sensor that receives the reflected light from the second beam splitter and detects tilt angles of the test mirror; a second light source that emits light toward the reference point; and a third sensor that detects a movement of the test mirror.