Optical Receptacle Filter Positioning for Light Attenuation
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Solution Overview
Problem
Conventional optical receptacles with large optical filters often unnecessarily cover both transmission and reception sides, leading to unnecessary light attenuation and increased costs due to the filter's size.
Innovation Solution
An optical receptacle design where the optical filter is strategically positioned between photoelectric conversion elements and optical transmission members, with a configuration that ensures the filter only covers necessary areas, using a formula (x≥Δa×dt+D²) to determine the optimal placement, thereby reducing the filter's size and material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large optical filter is disposed on the optical surface to ensure sufficient light attenuation coverage, then the light attenuation function is improved, but the filter size increases causing unnecessary coverage of reception side and increased costs
Solution Approach 1:
The patent applies local quality by differentiating the optical filter's coverage area into transmission-side and reception-side regions. The filter is strategically positioned to cover only the necessary transmission light paths while excluding reception light paths, creating non-uniform coverage that matches the functional requirements of different regions. This resolves the contradiction by providing sufficient attenuation where needed (transmission side) while minimizing unnecessary coverage (reception side), thus maintaining reliability without excessive filter size.
Solution Approach 2:
The patent segments the optical filter's coverage area into distinct functional zones: transmission light paths that require attenuation and reception light paths that should remain uncovered. By dividing the optical surface into these segments and positioning the filter to cover only specific segments, the solution achieves effective light attenuation for transmission while avoiding unnecessary coverage of reception areas, thereby reducing overall filter size while maintaining functionality.
2Loss of substance
If the optical filter size is reduced to minimize unnecessary coverage, then material costs are reduced, but the light attenuation coverage may become insufficient
Solution Approach 1:
The patent ensures sufficient light attenuation coverage with minimal filter material by applying local quality - concentrating the filter's attenuating property precisely where transmission light paths intersect with the optical surface. The filter is positioned and sized to cover only the specific regions where transmission light requires attenuation, while leaving reception light paths completely uncovered. This targeted approach maintains reliable attenuation coverage for transmission functions while minimizing material usage and costs.
3Illumination intensity
If the optical filter is positioned to cover only transmission side, then reception light is preserved, but transmission light attenuation may be insufficient
Solution Approach 1:
The patent resolves this contradiction by applying local quality to the optical filter's positioning and coverage characteristics. The filter is strategically positioned at specific locations on the optical surface where transmission light paths pass through, creating localized attenuation zones that affect only transmission light. Meanwhile, reception light paths are positioned in regions where the filter does not cover, preserving their intensity. This spatial differentiation of filter coverage ensures both sufficient transmission attenuation and preserved reception light intensity simultaneously.
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 allows for a smaller optical filter that effectively attenuates transmission light without affecting reception light, reducing material costs and ensuring the filter is only in a necessary and satisfactory range.
Implementation Method 1
an optical filter which is disposed so as to face one or more, namely part of the second optical surfaces, and which is configured to attenuate quantity of the light from the facing one or more second optical surfaces
Data Source
AI summary
This optical receptacle is provided with: an optical receptacle main body provided with a plurality of first optical surfaces and a plurality of second optical surfaces; and an optical filter. Light emitted from a photoelectric conversion element becomes incident on the first optical surfaces. The second optical surfaces allow light which becomes incident on the first optical surfaces, and passes through the inside, to exit towards an end surface of an optical transmission body. The optical filter is disposed so as to face some of the plurality of second optical surfaces, and attenuates the amount of light from the facing second optical surfaces. The optical filter is disposed with respect to at least one of the one or more second optical surfaces facing the optical filter, such that positional deviation between the first optical surfaces and the second optical surfaces is taken into consideration.