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Related Experiment Video

Updated: Jun 6, 2025

Design and Optimization Strategies of a High-Performance Vented Box

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Optimization of a large aperture wedge prism support system based on the closed-loop structural-thermal-optical

Wansha Wen, Ping Ruan, Baopeng Li

|November 22, 2024

Summary

A new closed-loop method optimizes the Thirty Meter Telescope

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Area of Science:

Optical engineering
Telescope instrumentation
Structural analysis

Background:

The Thirty Meter Telescope's linear atmospheric dispersion corrector (LADC) uses large prisms.
Prism support structures cause gravitational and reaction forces, leading to surface deformation.
Current open-loop analysis methods are inefficient and expertise-dependent.

Purpose of the Study:

To develop a more efficient closed-loop integrated model analysis optimization method.
To reduce prism surface deformation in the LADC.
To improve the optimization process for telescope optical components.

Main Methods:

Implemented a closed-loop integrated model analysis optimization method.
Integrated interface programs between analysis tools.
Utilized Optimal Latin Hypercube Design (Opt LHD) and Particle Swarm Optimization (PSO) algorithms.

Main Results:

Reduced analysis time from one week to two days.
Decreased optical surface deformation by 49.3% (155.0 nm to 78.6 nm) under specific conditions.
Achieved a 62.5% reduction in deformation (289.1 nm to 108.4 nm) under different conditions.

Conclusions:

The closed-loop method significantly enhances optimization efficiency.
The optimized prism support structure substantially reduces optical surface deformation.
This approach offers a more reliable and effective solution for optical instrument design.