Optical Testing Apparatus Rise Time Control
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Solution Overview
Problem
Existing optical measuring instruments face challenges in measuring the tolerance of the rise time of light pulses received, which is crucial for ensuring proper operation of the light receiving section.
Innovation Solution
An optical testing apparatus is developed, which includes a testing light source and a rise time control section. The apparatus generates a testing light pulse with a controlled rise time, allowing for the measurement of the tolerance of the rise time of light pulses received by the optical measuring instrument.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional optical measuring instrument uses light pulses with a distinct rise time value, then the instrument can perform distance measurement, but the rise time tolerance of received light pulses cannot be measured
Solution Approach 1:
The patent introduces a rise time control section as an intermediary component between the testing light source and the optical measuring instrument. This mediator allows precise control and adjustment of the rise time parameter of incident light pulses, enabling the measurement of rise time tolerance without requiring complex direct measurement systems. The rise time control section acts as a bridge that facilitates the measurement function while maintaining system manageability.
Solution Approach 2:
The patent implements preliminary action by controlling the rise time of incident light pulses before they reach the optical measuring instrument. The rise time control section pre-adjusts the light pulse characteristics, allowing the system to systematically vary rise time parameters and measure tolerance thresholds in advance. This preliminary control enables comprehensive tolerance testing without requiring post-measurement analysis of complex waveforms.
2Adaptability or versatility
If the rise time of light pulses is not controlled, then the optical measuring instrument operates with fixed parameters, but the tolerance range of the light receiving section cannot be determined
Solution Approach 1:
The patent applies dynamics by making the rise time parameter controllable and adjustable through the rise time control section. Instead of fixed rise time values, the system dynamically varies the rise time of incident light pulses to sweep through different parameter ranges. This dynamic control allows the determination of tolerance thresholds by observing at which points the optical measuring instrument's performance degrades, providing adaptability while maintaining operational simplicity through automated parameter sweeping.
3Reliability
If a testing apparatus with rise time control is introduced, then rise time tolerance can be measured, but the apparatus complexity increases
Solution Approach 1:
The patent replaces complex mechanical measurement systems with an electro-optical approach. Instead of using mechanical oscilloscopes or time-correlated single-photon counting systems to measure rise time, the invention uses an electro-optical modulator to electronically control and adjust the rise time of light pulses. This substitution achieves high measurement accuracy while avoiding the complexity of sophisticated mechanical measurement apparatus, as electronic control systems offer precise parameter adjustment with fewer 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 optical testing apparatus effectively measures the tolerance of the rise time of light pulses, ensuring that the light receiving section operates within acceptable parameters, thereby enhancing the accuracy and reliability of the optical measuring instrument.
Implementation Method 1
the rise time control section may be an acousto-optical crystal
Implementation Method 2
a piezoelectric transducer arranged to receive and convert the controlling electrical signal into ultrasound, wherein the rise time control section may be arranged to receive the ultrasound and control the rise time of the testing light pulse
Implementation Method 3
the rise time control section may have an electro-optical crystal
Data Source
AI summary
According to the present invention, 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 a testing light source and a rise time control section. The testing light source is arranged to generate a testing light pulse to be provided to the optical measuring instrument. The rise time control section is arranged to control the rise time of the testing light pulse.