Spectrometer Module Positional Accuracy via Segmented Support
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Solution Overview
Problem
The existing spectroscopic modules face challenges in securing positional accuracy between beam splitters and bandpass filters, which affects spectral accuracy due to lack of precise support structures and alignment mechanisms.
Innovation Solution
A spectroscopic module design featuring separate support bodies for beam splitters and bandpass filters, with a casing that includes a defining portion to securely attach the support bodies, ensuring precise alignment and positional accuracy between the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If beam splitters and bandpass filters are arranged in a casing without precise support structures, then device complexity is reduced, but positional accuracy between components deteriorates
Solution Approach 1:
The support structure is divided into a first support body for beam splitters and a second support body for bandpass filters. Each support body independently holds its respective components with precise positioning, allowing modular assembly and maintenance while ensuring accurate relative positioning between all optical components.
Solution Approach 2:
The first and second support bodies act as intermediary structures between the casing and the optical components. These support bodies provide precise positioning features that ensure accurate alignment between beam splitters and bandpass filters without requiring the casing itself to have complex positioning structures.
2Manufacturing precision
If beam splitters and bandpass filters are fixed rigidly to prevent positional shifts, then positional accuracy is improved, but ease of maintenance deteriorates
Solution Approach 1:
The support structure is segmented into separate first and second support bodies that can be independently accessed and removed. This allows maintenance personnel to access and replace beam splitters or bandpass filters without disturbing the entire assembly, while the segmented design itself provides rigid positioning when assembled.
Solution Approach 2:
The support bodies are designed with dynamic accessibility - while providing rigid fixed positioning during operation, they allow easy disassembly and reassembly for maintenance. The positioning features maintain precision during assembly while enabling straightforward access during maintenance operations.
Data Source
AI summary
A spectroscopic module includes a plurality of beam splitters; a plurality of bandpass filters disposed on one side in a Z direction with respect to the plurality of beam splitters; a light detector disposed on the one side in the Z direction with respect to the plurality of bandpass filters and includes a plurality of light receiving regions; a first support body supporting the plurality of beam splitters; a second support body supporting the plurality of bandpass filters; and a casing including a third wall portion integrally formed with the second support body. The first support body is attached to the third wall portion such that an outer surface of the first support body is in contact with an inner surface of the third wall portion in a state where the position is defined by a plurality of positioning pins and a plurality of positioning holes.