Raman Spectroscopic Device Light Capturing Unit Zoom Mechanism
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Solution Overview
Problem
Existing Raman spectroscopic devices face challenges in capturing scattered light efficiently due to limitations in the zoom function of the light capturing unit, which complicates the structure and increases manufacturing costs.
Innovation Solution
The Raman spectroscopic device incorporates a light capturing unit with a simple structure, featuring first and second light guides with convex or convex and concave lenses, arranged sequentially to transmit and receive light, thereby enhancing optical performance and capturing scattered light effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a zoom function is added to the light capturing unit to improve scattered light capture, then the scattered light capture capability is improved, but the device structure becomes complicated and manufacturing cost increases
Solution Approach 1:
The patent implements a zoom function by making the second convex lens movable along the optical axis, allowing dynamic adjustment of the focal distance to adapt to different object distances. This dynamic structure enables the system to maintain focused scattered light capture across varying distances without requiring multiple fixed lens assemblies, thus improving measurement precision while controlling structural complexity.
Solution Approach 2:
The light capturing unit is designed to perform multiple functions: it captures scattered light from targets at various distances, focuses the light onto the slit, and accommodates zoom functionality through a single integrated lens system. The movable second convex lens serves both as a focusing element and a zoom mechanism, eliminating the need for separate zoom components and reducing overall device complexity.
2Measurement precision
If a zoom function is added to the light capturing unit to improve scattered light capture, then the scattered light capture capability is improved, but manufacturing cost increases
Solution Approach 1:
The zoom function is achieved through a simple movable lens mechanism where the second convex lens can be positioned at different locations along the optical axis. This dynamic adjustment capability is implemented using straightforward mechanical guidance structures, avoiding complex motorized or electronically controlled zoom systems, thereby reducing manufacturing costs while maintaining improved scattered light capture capability.
3Ease of manufacture
If the light capturing unit structure is simplified to reduce manufacturing cost, then manufacturing cost decreases, but scattered light capture capability deteriorates
Solution Approach 1:
The patent extracts the zoom functionality from a complex multi-component system and implements it through a single movable second convex lens within the light capturing unit. By isolating the zoom function to a specific movable element rather than requiring a completely complex optical system, the design achieves cost-effective manufacturing while preserving scattered light capture capability across varying distances.
Solution Approach 2:
The simplified structure maintains scattered light capture capability through the dynamic positioning of the second convex lens, which can be moved to adjust focus for targets at different distances. This single degree of freedom movement provides zoom functionality without requiring multiple lens elements or complex mechanical structures, achieving a balance between manufacturing simplicity and measurement precision.
Data Source
AI summary
A Raman spectroscopic device includes a light capturing unit between a light analysis unit and a target, the light analysis unit includes a light sensor, a light collection lens, a diffraction grating, a light generator, a dichroic mirror, and a light passing lens, and the light capturing includes one first light guide and at least one second light guide, which are arranged sequentially toward the target from the light analysis unit, receives light of the light generator from the light passing lens and transmits the light to the target or receives scattered light from the target and transmits the scattered light to the light passing lens by means of the first light guide and the second light guide.