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JKSPE : Journal of the Korean Society for Precision Engineering

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비구면 렌즈의 GMP 성형 변형 보정을 위한 데이터 기반 비구면 계수 산출에 관한 연구

강현종1, 강상도1, 오승근1, 김우순2orcid

A Study on the Data-driven Aspheric Coefficient Calculation for Shape Compensation of Aspheric Lenses Glass Molding Press (GMP)

Hyun Jong Kang1, Sang Do Kang1, Seung Keun Oh1, Woo Soon Kim2orcid
JKSPE 2026;43(8):797-804. Published online: August 1, 2026
1엠피닉스㈜
2원광대학교 기계공학부

1MPNICS Co., Ltd.
2Department of Mechanical Engineering, Wonkwang University
Corresponding author:  Woo Soon Kim, Tel: +82-63-850-7461, 
Email: knamba@wku.ac.kr
Received: 11 December 2025   • Revised: 13 January 2026   • Accepted: 5 February 2026
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This study presents a Python-based design tool that utilizes a data-driven backtracking method for aspheric coefficients to effectively address thermal deformation in aspheric glass lenses produced by the Glass Molding Press (GMP) process. To achieve the nanometer-level form accuracy essential for optical communications and high-power laser applications, it is crucial to compute compensation coefficients through nonlinear least-squares fitting of the lens's measured data to the standard aspheric equation. The proposed tool enhances user-friendliness with a PyQt GUI and incorporates the lmfit library, offering unique flexibility by allowing users to select or fix specific variables among up to 22 parameters, including the radius of curvature, conic constant, and aspheric coefficient, during the fitting process.

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A Study on the Data-driven Aspheric Coefficient Calculation for Shape Compensation of Aspheric Lenses Glass Molding Press (GMP)
J. Korean Soc. Precis. Eng.. 2026;43(8):797-804.   Published online August 1, 2026
Download Citation

Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.

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A Study on the Data-driven Aspheric Coefficient Calculation for Shape Compensation of Aspheric Lenses Glass Molding Press (GMP)
J. Korean Soc. Precis. Eng.. 2026;43(8):797-804.   Published online August 1, 2026
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