Optical Module Isolator Mounting With Magnetic Intermediary
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Solution Overview
Problem
In optical modules, the isolator is mounted away from the inner surface of the housing, leading to issues with accurate positioning due to the magnet being pulled towards the metal housing, which is required for small size and low power consumption designs.
Innovation Solution
Incorporating a magnetic body made of materials like iron or Kovar between the housing and isolator to prevent the magnet from being pulled towards the housing, allowing for accurate mounting of the isolator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the isolator is mounted away from the inner surface of the housing to enable accurate positioning, then the positioning accuracy is improved, but the distance between the housing and isolator increases, which contradicts the small size requirement
Solution Approach 1:
A magnetic body is introduced as an intermediary component between the housing and the isolator. This magnetic body serves as a mediator that generates magnetic force to counteract the attraction between the isolator's magnet and the metal housing, enabling the isolator to be positioned at the correct location without being pulled toward the housing
2Volume of moving object
If the distance between the housing and isolator is shortened to achieve small size, then the compactness is improved, but the magnet of the isolator is pulled toward the metal housing, causing positioning errors
Solution Approach 1:
The magnetic body functions as a counterweight in terms of magnetic force. It generates an opposing magnetic force that balances the attractive force between the isolator's magnet and the metal housing, preventing the isolator from being pulled toward the housing and maintaining positioning accuracy even when the distance is short
3Use of energy by moving object
If the isolator is mounted close to the housing for low power consumption and small size, then the energy efficiency is improved, but the magnet attraction to the housing causes mounting position errors
Solution Approach 1:
The magnetic body acts as a mediator that interferes with the direct magnetic attraction between the isolator and housing. By positioning the magnetic body between them, it creates a magnetic field that counteracts the harmful attraction, allowing the isolator to be mounted at the correct position with high precision
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 the isolator to be mounted with high accuracy by attaching it to the magnetic body, ensuring precise positioning and alignment within the optical module.
Implementation Method 1
an isolator configured to have magnetic force and transmit the light
Implementation Method 2
a magnet of the isolator is pulled toward the housing
Data Source
AI summary
An optical module according to the present disclosure includes: a light source configured to output light; an isolator configured to have magnetic force and transmit the light; a housing configured to have a plurality of surfaces and accommodate the light source and the isolator; and a magnetic body configured to be positioned between at least one of the plurality of surfaces of the housing and the isolator.