Optical Testing Apparatus for Compact Distance Measurement
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Solution Overview
Problem
Conventional distance measuring instruments require extensive spaces for testing due to the need to maintain a specific distance from the measuring object, which is impractical and inefficient.
Innovation Solution
An optical testing apparatus that includes an incident light receiving section, a light signal providing section with a delay function, an imaging capture section, and an optical axis misalignment deriving section, allowing for the derivation of optical axis misalignment and enabling testing at a reduced distance by simulating the delay time between incident light emission and reception, thus reducing the required space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the distance measuring instrument is spaced away from the measuring object by the expected distance (e.g., 200m) for testing, then the measurement accuracy is improved, but the testing site area increases significantly
Solution Approach 1:
An optical path lengthening device is introduced as an intermediary component between the distance measuring instrument and the measuring object. This device extends the optical path length without requiring physical separation, allowing the instrument to receive reflected light as if it were at the expected distance while maintaining a compact testing setup. The intermediary device effectively decouples the optical path length from the physical distance, resolving the contradiction between measurement accuracy and testing site area.
Solution Approach 2:
The invention creates an optical simulation environment that copies the conditions of actual distant measurement. By using the optical path lengthening device to simulate the time delay and optical path characteristics of 200m distance measurement, the system can perform accurate testing in a compact space. This copying approach allows the instrument to be tested under realistic measurement conditions without requiring the actual measurement distance.
2Area of stationary object
If the distance between the instrument and measuring object is reduced for compact testing, then the testing site area is reduced, but the measurement accuracy deteriorates
Solution Approach 1:
The optical path lengthening device serves as a mediator that compensates for the reduced physical distance. By introducing this intermediary component, the system maintains the required optical path length and time delay characteristics even when the physical separation between instrument and object is minimized. This allows compact testing setup while preserving measurement accuracy through optical path extension rather than relying on physical distance.
3Measurement precision
If extensive space is required for testing the distance measuring instrument, then the measurement accuracy is maintained, but the ease of operation and accessibility worsen
Solution Approach 1:
The invention creates a simulated measurement environment that copies the optical characteristics of distant measurement within a compact space. This allows the testing to be performed with easy accessibility and convenient operation while maintaining measurement accuracy through optical path simulation rather than requiring extensive physical space.
Solution Approach 2:
The optical path lengthening device acts as an intermediary that enables accurate measurement testing in a compact, easily accessible location. By mediating between the instrument and the measuring object, it allows operators to perform testing in confined spaces without compromising measurement precision, thereby improving ease of operation and accessibility.
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 accurate testing of optical measuring instruments at a significantly reduced distance, allowing for precise alignment and misalignment correction, thereby improving testing efficiency and reducing the need for extensive testing sites.
Implementation Method 1
an incident light receiving section arranged to receive the incident light
Implementation Method 2
a light signal providing section arranged to provide a light signal to an incident object after a predetermined delay time since the incident light receiving section has received the incident light
Implementation Method 3
an imaging capture section arranged to image the incident light
Implementation Method 4
receive reflected light as a result of reflection of the incident light at the incident object
Data Source
AI summary
An optical testing apparatus is used in testing an optical measuring instrument that provides incident light from a light source to an incident object and receives reflected light of the incident light at the incident object. The apparatus includes an incident light receiving section, a light signal providing section, an imaging section, and an optical axis misalignment deriving section. The incident light receiving section receives incident light. The light signal providing section provides a light signal to an incident object after a predetermined delay time since the incident light receiving section has received the incident light. The imaging section images the incident light. The optical axis misalignment deriving section derives misalignment of the optical axis of the incident light with respect to the incident light receiving section based on misalignment between the incident light receiving section and the imaging section as well as an imaging result with the imaging section.