4.6 Article

Method for testing freeform surfaces based on a Shack-Hartmann sensor with plane wavefront scanning and stitching

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Optics

Robust and accurate measurement of optical freeform surfaces with wavefront deformation correction

Haoyu Lyu et al.

Summary: The wavefront deformation in the non-null test of optical freeform surface measurement was corrected using a wavefront propagation model, resulting in improved measurement accuracy. A freeform surface wavefront correction (FSWC) measurement system was established to validate the proposed method. Simulation and experimental studies showed that the proposed method effectively reduces the influence of wavefront deformation in space propagation, and the freeform surface form accuracy measured by FSWC can reach 10 nm RMS.

OPTICS EXPRESS (2022)

Article Optics

Challenges and strategies in high-accuracy manufacturing of the world's largest SiC aspheric mirror

Xuejun Zhang et al.

Summary: The process of manufacturing the world's largest silicon carbide (SiC) aspheric mirror involves various challenges, including the preparation of the mirror blank, asphere fabrication, testing, cladding, and coating. To overcome these difficulties, a range of innovative technologies and methods were proposed and successfully applied to produce a SiC aspheric mirror with impressive performance. The completed mirror demonstrates outstanding characteristics, such as low aerial density, high accuracy in shape testing, and low surface figure error and roughness.

LIGHT-SCIENCE & APPLICATIONS (2022)

Article Engineering, Multidisciplinary

Subaperture stitching wavelength scanning interferometry for 3D surface measurement of complex-shaped optics

Yong Bum Seo et al.

Summary: This new method combines subaperture stitching technology and wavelength scanning interferometry with a high-precision multi-axis position stage, suitable for measuring complex surface shapes. By keeping the optical probe perpendicular to the surface slope, it effectively solves the poor fringe visibility issue on complex optics, providing accurate and reliable measurement results.

MEASUREMENT SCIENCE AND TECHNOLOGY (2021)

Review Optics

Freeform optics for imaging

Jannick P. Rolland et al.

Summary: This article discusses the development history, definition, concurrent engineering, and manufacturing methods of freeform optics, focusing on aberration theory and emerging design methods. It also emphasizes the measurement techniques for freeform optics and looks forward to the future of this technology.

OPTICA (2021)

Article Optics

Telephoto- lens-based Optical Differentiation Wavefront Sensor for freeform metrology

Biswa R. Swain et al.

Summary: An Optical Differentiation Wavefront Sensor based on a telephoto lens system and binary pixelated filters is reported in this study, which can measure wavefronts with accuracy better than lambda/10 Root Mean Squared (RMS) at lambda=633 nm. The system shows a high tolerance to components alignment errors in experimental investigation.

OPTICS EXPRESS (2021)

Article Optics

Extended-aperture Hartmann wavefront sensor with raster scanning

Hongfeng Xu et al.

Summary: This paper proposes an extended-aperture Hartmann wavefront sensor based on raster scanning, which can achieve a large dynamic range and high spatial resolution simultaneously. The method is not only applicable for HWFS but also for SHWFS, enabling higher accuracy and better power efficiency.

OPTICS EXPRESS (2021)

Article Optics

Shack-Hartmann wavefront sensor optical dynamic range

Vyas Akondi et al.

Summary: This paper introduces an alternative definition of optical dynamic range based on avoiding the overlap of lenslet images. Compared to the traditional lenslet-bound definition, the optical dynamic range is larger and better adapted to the number of lenslets across the SHWS pupil. Additionally, a pre-centroiding algorithm is proposed to simplify the process of determining lenslet image locations in the presence of defocus and astigmatism.

OPTICS EXPRESS (2021)

Article Optics

Fabrication of freeform optical components by fluidic shaping

Mor Elgarisi et al.

Summary: The method presented allows for shaping liquid volumes and solidifying them into desired freeform components with high surface quality, providing a rapid prototyping solution for high-quality components in the optical design industry. It has the potential to be expanded to an industrial scale for mold-less fabrication of freeform optics.

OPTICA (2021)

Article Optics

Exact equations to measure highly aberrated wavefronts with the Hartmann test

Oliver Huerta-Carranza et al.

OPTICS EXPRESS (2020)

Article Optics

Freeform spectrometer enabling increased compactness

Jacob Reimers et al.

LIGHT-SCIENCE & APPLICATIONS (2017)

Article Optics

Subaperture stitching for measurement of freeform wavefront

Kamal K. Pant et al.

APPLIED OPTICS (2015)