Cemented Doublet Lens for Light Energy Collection and Chromatic Correction
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Solution Overview
Problem
Current light energy collecting systems in flow cytometers face challenges in correcting chromatic aberration, system complexity, and high cost simultaneously.
Innovation Solution
A cemented doublet lens system comprising a negative focal power lens and a positive focal power lens with specific refractive index and Abbe number differences is used to correct chromatic aberration, improving bonding strength and simplifying the structure by eliminating the need for additional fixing and coating, thereby reducing cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple separate lenses and additional fixing structures are used, then chromatic aberration can be corrected, but system complexity and cost increase
Solution Approach 1:
The patent combines multiple lens elements into a single cemented doublet structure where the first and second lenses are optically coupled together. This integration merges the functions of multiple separate components into one unified optical element, achieving chromatic aberration correction through the combined optical properties of the doublet while eliminating the need for additional fixing structures and reducing overall system complexity
Solution Approach 2:
The cemented doublet employs composite optical design with lenses made of different materials having specific refractive index differences (greater than 0.15) and Abbe number differences (greater than 10). This composite approach allows the optical system to correct chromatic aberration through material properties rather than requiring complex mechanical structures, achieving precision correction while maintaining simplicity
2Manufacturing precision
If multiple separate lenses and additional coating processes are used, then chromatic aberration can be corrected, but manufacturing cost increases
Solution Approach 1:
By merging multiple lens functions into a single cemented doublet, the patent reduces the total number of optical surfaces requiring anti-reflective coating. The integrated structure requires fewer manufacturing steps and less complex assembly processes, directly reducing manufacturing cost while maintaining chromatic aberration correction capability through the optimized lens combination
Solution Approach 2:
The patent specifies precise parameter ranges for the lens materials (refractive index difference greater than 0.15, Abbe number difference greater than 10) to optimize the optical performance. By carefully selecting materials within these parameter ranges, the design achieves effective chromatic aberration correction with standard manufacturing processes, avoiding the need for expensive specialized materials or complex manufacturing techniques
3Stability of the object's composition
If additional fixing structures are used to secure lenses, then lens positioning stability improves, but system reliability decreases due to more potential failure points
Solution Approach 1:
The cemented doublet design merges the first and second lenses into a single integrated optical unit with fixed relative positioning. This integration eliminates the need for separate fixing structures that would introduce additional potential failure points, while the cemented construction ensures stable optical alignment and maintains high system reliability through reduced component count
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
The system effectively corrects chromatic aberration, enhances light energy concentration, and improves reliability and stability while reducing complexity and cost.
Implementation Method 1
the refractive index of the negative focal power lens is greater than the refractive index of the positive focal power lens, and the Abbe number of the negative focal power lens is smaller than the Abbe number of the positive focal power lens
Implementation Method 2
enhances light energy concentration
Data Source
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Figure 5~7(c)
AI summary
The present disclosure relates to a light energy collecting system and a detection apparatus. Some embodiments of the present disclosure provide a light energy collecting system and a detection apparatus, to correct chromatic aberration, simplify system structure, and improve system reliability and stability.