Spheroidal Condenser Mirror Optical Axis Alignment
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Solution Overview
Problem
Existing signal transmitting/receiving devices using light face challenges with light beam spread and misalignment, leading to insufficient light intensity and reduced communication accuracy over long distances and with optical axis misalignment.
Innovation Solution
A signal transmitting/receiving device with a condenser mirror having a through hole and a reflection surface shaped like a spheroid, aligning the optical axes of the light source and the mirror, allowing transmission light to pass through and efficiently guiding reception light to the photodetector even with slight misalignment or tilt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If light is transmitted over long distances, then communication range is extended, but light beam spread causes insufficient light intensity at the receiver
Solution Approach 1:
The condenser mirror employs a spheroidal reflection surface with a specific curvature radius (R = 0.03m) to focus and condense the diffused light beams from the light source onto the photodetector. This curved surface geometry enables effective light concentration even when light travels long distances and spreads out, resolving the contradiction between extended transmission distance and maintained light intensity.
2Reliability
If optical axis alignment is precise, then light reception efficiency is maximized, but position adjustment becomes difficult
Solution Approach 1:
The spheroidal condenser mirror's curved reflection surface provides a large acceptance angle for incoming light beams. This geometric property enables the system to maintain high light reception efficiency even when there is slight optical axis misalignment or tilt between transmitting and receiving devices, thereby facilitating easier position adjustment while preserving reliable light reception.
3Adaptability or versatility
If optical axis tilt occurs, then alignment tolerance increases, but light guidance intensity decreases
Solution Approach 1:
The spheroidal condenser mirror with curvature radius R = 0.03m is specifically designed to condense light beams that arrive at various angles due to optical axis tilt. The curved surface geometry effectively redirects and focuses these tilted light beams onto the photodetector, maintaining sufficient light guidance intensity even when alignment tolerance is increased.
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
This configuration enables simple and smooth position adjustment and ensures sufficient light intensity reception, improving signal quality and accuracy in optical communication systems.
Implementation Method 1
A reflection surface of the condenser mirror has a shape obtained by cutting out a columnar body extending in an emission direction of the transmission light, with a spheroid whose rotation axis is a major axis
Data Source
AI summary
A signal transmitting/receiving device includes: a light source part configured to emit transmission light; a light-receiving part having a photodetector configured to receive reception light; and a condenser mirror configured to condense the reception light on the photodetector. The condenser mirror has a through hole configured to allow the transmission light emitted from the light source part to pass therethrough and align an optical axis of the light source part and an optical axis of the condenser mirror with each other. A reflection surface of the condenser mirror has a shape obtained by cutting out a columnar body extending in an emission direction of the transmission light, with a spheroid whose rotation axis is a major axis.