Optical Assembly Adhesive-Free Wave Filtering
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Solution Overview
Problem
Existing optical assemblies experience signal loss and reduced reliability due to thermal expansion and contraction of adhesive on the optical path, affecting the angle of incidence and refraction of light, which impacts coupling efficiency.
Innovation Solution
The optical assembly eliminates adhesive on the optical path by using a total internal reflection surface and a removable connecting part for the wave filtering apparatus, optimizing the optical transmission path and leveraging internal space within the base body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If adhesive is used to secure the wave filtering apparatus to the inclined surface of the slot, then the wave filtering apparatus can be fixed in position, but thermal expansion and contraction of the adhesive cause changes in the angle of incidence and refraction of light, leading to signal loss and reduced reliability
Solution Approach 1:
The patent removes the adhesive from the optical path by extracting it from the coupling structure. Instead of using adhesive to secure the wave filtering apparatus, the design uses a slot structure where the apparatus is positioned and secured without adhesive on the optical path, thereby eliminating the thermal expansion issues that affect light transmission reliability
Solution Approach 2:
The patent introduces a slot structure as an intermediary between the base body and the wave filtering apparatus. This slot acts as a mediator that holds the apparatus in position without requiring adhesive on the optical path, thus maintaining both position stability and optical transmission reliability
2Ease of operation
If adhesive is disposed on the optical path to secure components, then assembly and disassembly become easier, but thermal effects cause changes in light transmission characteristics and increase signal loss
Solution Approach 1:
The patent extracts adhesive from the optical path while maintaining ease of assembly through the slot structure. The wave filtering apparatus is secured to the base body via the slot without adhesive on the optical path, allowing for easy assembly while preventing thermal expansion-induced signal loss
3Strength
If adhesive is used to fix the wave filtering apparatus, then the apparatus can be securely mounted, but temperature-induced expansion and contraction alter the optical path and reduce coupling efficiency
Solution Approach 1:
The patent removes adhesive from the optical path while maintaining secure mounting through the slot structure. This extraction eliminates the thermal expansion effects that would otherwise alter the optical path and reduce coupling efficiency, while the slot provides sufficient mounting strength
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 design enhances the reliability and stability of the optical assembly by minimizing thermal effects on light transmission, reducing signal loss, and maintaining consistent optical characteristics across temperature changes.
Implementation Method 1
A total internal reflection surface and a connecting part are formed in the second slot. The total internal reflection surface can reflect the light emitted from the light emitting apparatus
Implementation Method 2
The beam splitting surface of the wave filtering apparatus splits the light reflected from the total internal reflection surface into a first beam and a second beam
Data Source
AI summary
This disclosure provides an optical assembly, comprising a base body and a wave filtering apparatus. A first slot is disposed on an upper surface of the base body. A total internal reflection surface and a connecting part are formed in the first slot. The total internal reflection surface reflects collimated light formed by a first lens from a light emitting apparatus. The wave filtering apparatus comprises a first part removably connected to the connecting portion, and a second portion forming a beam splitting surface. The wave filtering apparatus has a light-pervious optical coating at least on the beam splitting surface of the apparatus, and is configured to split the collimated light reflected from the total internal reflection surface into a first beam and a second beam. The first beam travels towards the side where the third lens is located, and the second beam travels towards a photoelectric detection apparatus.