Spectroscope Reflective Layer Structure for Thermal Deformation Control
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Solution Overview
Problem
The existing spectrometers face issues with spectroscopic accuracy due to the influence of the surface state of the bottom wall part when the resin molded layer is thin, and increased deformation from temperature changes when it is thick, leading to potential peeling and reduced reliability.
Innovation Solution
A spectrometer design with a resin molded layer having a first part corresponding to the optical function part and a second part surrounding it, thinner than the first part, which inhibits the influence of the surface state and deformation, ensuring a necessary thickness and preventing peeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the resin molded layer is formed thin, then the amount of deformation due to temperature change is reduced, but the influence of the surface state of the bottom wall part appears and spectroscopic accuracy decreases
Solution Approach 1:
The resin molded layer is divided into two distinct parts: a first part with sufficient thickness to minimize temperature-induced deformation, and a second part that is thinner to reduce the influence of the bottom wall surface state. This segmentation allows each part to optimize for its specific function, resolving the contradiction between deformation control and spectroscopic accuracy.
Solution Approach 2:
Different regions of the resin molded layer are given different thicknesses according to their functional requirements. The first part has greater thickness where thermal stability is critical, while the second part has reduced thickness where surface state influence must be minimized. This local differentiation of properties resolves the contradiction by applying appropriate thickness characteristics to specific locations.
2Measurement precision
If the resin molded layer is formed thick, then the influence of the surface state of the bottom wall part is reduced, but the amount of deformation due to temperature change increases and spectroscopic accuracy decreases
Solution Approach 1:
The resin molded layer is segmented into a first part with sufficient thickness for thermal stability and a second part with reduced thickness to minimize surface state influence. This segmentation enables the structure to simultaneously achieve both goals that would be contradictory in a uniform thickness design.
Solution Approach 2:
The thickness of the resin molded layer is locally optimized: the first part maintains sufficient thickness to filter out surface state influences, while the second part reduces thickness to minimize thermal deformation. This local quality differentiation resolves the contradiction between reducing surface state influence and minimizing temperature-induced deformation.
3Quantity of substance
If the resin molded layer is formed thin, then the amount of material is reduced, but the resin molded layer may peel off from the support
Solution Approach 1:
The resin molded layer is segmented into a first part with sufficient thickness for peeling resistance and a second part with reduced thickness to minimize material usage. This segmentation allows the structure to achieve both material reduction and adequate adhesion by concentrating sufficient thickness in the first part while reducing material in the second part.
Solution Approach 2:
Different regions of the resin molded layer are given different thicknesses: the first part has sufficient thickness to ensure strong adhesion and prevent peeling, while the second part has reduced thickness to minimize overall material consumption. This local differentiation of thickness properties resolves the contradiction between material reduction and peeling resistance.
Data Source
AI summary
A spectrometer includes a support having a bottom wall part and a side wall part arranged on one side of the bottom wall part, a light detection element supported by the support to face a surface of the bottom wall part on the one side through a spectroscopic space, a resin molded layer provided at least on the surface of the bottom wall part on the one side, and a reflecting layer provided on the resin molded layer and included in an optical function part on the bottom wall part. The resin molded layer has a first part having a shape corresponding to the optical function part and a second part which surrounds the first part and is thinner than the first part.