[HTML][HTML] Improved fractional Fourier transform method based on triangle shrinkage for estimating physical parameters from Newton's rings

JM Wu, S Jiang, MF Lu, JF Fan, YF Li, Y Ji… - Optics & Laser …, 2024 - Elsevier
Newton's rings serve a crucial role in interferogram analysis for estimating physical
parameters, including the radius of curvature of lenses and the centre of the rings. The …

[HTML][HTML] Image plane digital holography for simultaneous measurement of temporal and spatial coherence

J Lobera, FJ Torcal-Milla, EM Roche, N Andres… - Optics & Laser …, 2024 - Elsevier
In this work, we propose and validate the Image Plane Digital Holography (IPDH) with
laminar illumination technique for measuring the complete coherence degree, the temporal …

Measurement of spatial coherence of partially coherent light by spatial averaging of speckle pattern

X Chao, F Yang, G Sun, J Ding - Optics & Laser Technology, 2024 - Elsevier
We employ spatial averaging to directly evaluate the modulus of two-dimensional spatial
coherence of partially coherent field using speckle patterns. This approach offers several …

Employment of Fizeau fringe disintegration to magnify small phase variations

HH Wahba, WA Ramadan, AS El-Tawargy - JOSA B, 2020 - opg.optica.org
When an object produces a small phase variation not less than the minimum phase variation
detectable by the used system and more than the system's noise, the object is considered as …

[PDF][PDF] Newton ring tolerance conversion program

JM Kim - J Korean Ophthalmic Opt Soc, 2021 - jkoos.or.kr
Purpose: To develop a program that converts the Newton ring tolerance used in lens
fabrication into the numerical tolerance of the radius of curvature and diopter tolerance …

Laboratory starlight simulator for future space-based heterodyne interferometry

W Karlsson - 2023 - diva-portal.org
In astronomy, interferometry by ground-based telescopes offers the greatest angular
resolution. However, the Earths atmosphere distorts the incident wavefront from a celestial …

[PDF][PDF] Development of a Sag Data Output Program for the Core Mold Production of Aspheric Contact Lenses

JM Kim - J Korean Ophthalmic Opt Soc, 2023 - jkoos.or.kr
Purpose: To develop a program to deliver aspherical processing sag data for the fabrication
of aspheric contact lens molds. Methods: Using the Delphi 11 programming language, a …

[HTML][HTML] Retrieving curvature's equation of a radially symmetric concave surface using Fizeau ring fringes

ASED El-Tawargy, WAEM Ramadan, M Nawareg - Results in Optics, 2021 - Elsevier
In this work, we attempt to precisely find out the equation describing the shape of a radially
symmetric concave surface. An experimental interference pattern of Fizeau ring fringes in …

비구면콘택트렌즈코아몰드제작용새그데이터출력프로그램개발

김정미 - 한국안광학회지, 2023 - dbpia.co.kr
목적: 비구면 콘택트렌즈 금형 제작에 필요한 비구면 가공 새그 (sag) 데이터를 출력하는
프로그램을 개발하고자 하였다. 방법: 델파이 11 프로그래밍 언어를 사용하여 1 차 코아 금형 …

뉴톤링공차변환프로그램

김정미 - 한국안광학회지, 2021 - dbpia.co.kr
목적: 렌즈 제작에서 사용되는 뉴톤 링 공차를 수치적 곡률반경 공차 및 디옵터 공차로 변환할
수 있는 프로그램을 개발하고자 하였다. 방법: 뉴톤 링 간섭계 공식과 RAD Studio 11 의 …