Optical Testing Apparatus Multiplexing Light Pulses for Sensor Evaluation
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Solution Overview
Problem
Conventional optical measuring instruments require reproducing an actual measurement environment for testing, which is cumbersome and inefficient.
Innovation Solution
An optical testing apparatus that uses multiple testing light sources and optical penetration members to simulate reflected light pulses, allowing for the evaluation of light receiving performance without replicating the actual measurement environment, by multiplexing testing light pulses with different arrival times corresponding to fixed distance planes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the actual measurement environment is reproduced for testing the optical measuring instrument, then the testing accuracy is improved, but the device complexity and time consumption increase
Solution Approach 1:
The patent creates a simplified copy of the measurement environment using a target board with standardized reflective surfaces at known distances. This copy allows testing without reproducing complex real-world scenes, maintaining testing accuracy while reducing environmental setup complexity
Solution Approach 2:
The testing environment is segmented into discrete reflective planes at specific distances from the sensor. This segmentation allows independent control and measurement of light reception at different ranges, simplifying the overall testing setup while maintaining precision for multiple distance measurements
2Reliability
If the actual measurement environment is reproduced for testing the optical measuring instrument, then the testing reliability is improved, but the testing time and productivity decrease
Solution Approach 1:
The target board is pre-configured with reflective surfaces at known distances before testing begins. This preliminary setup eliminates the need for complex environmental preparation during testing, ensuring reliable results while significantly reducing testing time and improving productivity
3Adaptability or versatility
If multiple testing light sources and optical penetration members are used, then the testing capability is improved, but the device complexity increases
Solution Approach 1:
The patent employs a universal testing apparatus where the same optical penetration members and light sources can test multiple parameters (different distances, light reception characteristics) by changing the target board configuration. This multi-functionality improves testing capability while controlling device complexity through component reuse
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
Enables effective testing of optical measuring instruments, such as ToF sensors, by simulating the environment, allowing for the evaluation of light receiving performance and interplanar distances without the need for actual environment reproduction, thus simplifying the testing process.
Implementation Method 1
two or more optical penetration members that each have an optical penetration region and receive the testing light pulse from each of the two or more testing light sources for penetration through the optical penetration region
Implementation Method 2
a wave multiplexing section that multiplexes the testing light pulses penetrating through the two or more optical penetration members for provision to the optical measuring instrument
Implementation Method 3
an optical measuring instrument that provides an incident light pulse from a light source to an incident object and receives a reflected light pulse as a result of reflection of the incident light pulse at the incident object
Data Source
AI summary
An optical testing apparatus is used in testing an optical measuring instrument. The optical measuring instrument provides an incident light pulse from a light source to an incident object and receives a reflected light pulse as a result of reflection of the incident light pulse at the incident object. The optical testing apparatus includes two or more testing light sources, two or more optical penetration members, and a wave multiplexing section. The two or more testing light sources each output a testing light pulse. The two or more optical penetration members each have an optical penetration region and receive the testing light pulse from each of the two or more testing light sources for penetration through the optical penetration region. The wave multiplexing section multiplexes the testing light pulses penetrating through the two or more optical penetration members for provision to the optical measuring instrument.