Optical Module Receptacle UV Curing Window Design
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Solution Overview
Problem
The existing methods for connecting optical elements and optical waveguides, such as YAG welding and ultraviolet curing resin, face limitations in material flexibility and are prone to optical displacement due to hardening irregularities caused by irregular UV irradiation, leading to alignment and focal position issues.
Innovation Solution
The use of a receptacle with a device holder and ultraviolet curing resin, where the device holder has a large window area for dispersed ultraviolet transmission around the fitted portion, ensuring uniform curing and minimizing optical displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ultraviolet curing resin is used to adhere the light receiving device and receptacle, then material flexibility and cost are improved, but hardening irregularity causes optical displacement
Solution Approach 1:
The device holder is designed with window areas that have different properties from the surrounding portions - specifically, the window areas allow ultraviolet light transmission while other areas block it. This local differentiation enables controlled UV irradiation distribution to achieve uniform resin hardening while maintaining the benefits of ultraviolet curing resin adherence.
2Strength
If YAG welding is used to fix the receptacle and light receiving device, then fixation strength is improved, but material selection is limited and optical position displacement occurs
Solution Approach 1:
The patent replaces the mechanical/thermal welding system (YAG welding) with a chemical bonding system (ultraviolet curing resin). This substitution eliminates the limitations of material compatibility and thermal stress associated with welding, while the introduced window area structure addresses the new challenge of uniform resin hardening.
3Ease of manufacture
If ultraviolet irradiation is applied to cure the resin, then adherence is achieved, but irregular irradiation intensity distribution causes hardening irregularity
Solution Approach 1:
The device holder incorporates window areas with specific transmission properties that differ from the surrounding structure. These window areas are strategically positioned and sized to control the distribution of ultraviolet light, ensuring that resin in different locations receives appropriate irradiation intensity for uniform hardening.
Solution Approach 2:
The solution addresses the two-dimensional irradiation intensity distribution problem by introducing a structural dimension - the window areas create a spatial pattern of UV transmission that compensates for intensity variations, transforming an uneven irradiation field into a uniform curing result.
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 approach reduces hardening irregularities and optical displacement, stabilizing the optical axis and focal position, thereby enhancing the reliability of the optical module.
Implementation Method 1
fixed and held the top end side of the device through the interposition of the ultraviolet curing resin
Data Source
AI summary
The optical module comprises a device mounted with a photoelectric element and a receptacle to optically connect this device and an optical fiber is provided. The receptacle comprises a device holder at its one end, allows the device holder to be fitted to the top end side of the device, and fixed and held through the interposition of the ultraviolet curing resin. The device holder comprises a window area relatively large in an amount of ultraviolet transmission dispersedly arranged on the entire periphery of the fitted portion with the device.