Development of one-shot aspheric measurement system with a Shack–Hartmann sensor

Furukawa, Yasunori; Takaie, Yuichi; Maeda, Yoshiki; Ohsaki, Yumiko; Takeuchi, Shigeyuki; Hasegawa, Masanobu

doi:10.1364/ao.55.008138

Cited by 6 publications

(3 citation statements)

References 12 publications

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“…The detection of injected aspheric lenses has three coordinate measuring instrument, interferometer and image instrument [16], but these measurements are geometry size, relying on the regulation of reference, which can not reflect the state error in the effective aperture of mobile phone lens and the measurement time is up to 5-40 minutes. Wavefront sensor in transmission model has great advantages.…”

Section: Aspherical Surface Detection Of Mobile Phone Injection Moldingmentioning

confidence: 99%

Application and Development of Wavefront Sensor Technology

Zhao¹,

Cheng²

2017

IJMSA

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Wavefront sensing technology can directly test the phase distribution of wavefront distortion and has the advantages of simple operation, real-time and large dynamic range. It is widely used in adaptive optics, laser beam quality diagnosis, laser atmospheric communication, optical element and optics system detection, quantitative phase microscope, human eye aberration measurement and other fields. This paper mainly elaborates application and development of wavefront sensing technology in different fields. Combining with the research, wavefront sensing technology is utilized in the high-volume detection of aspherical mobile phone injection and the application advantages in aspheric injection molding lenses error, test efficiency and the number of quality evaluation parameters are illustrated.

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Section: Aspherical Surface Detection Of Mobile Phone Injection Moldingmentioning

confidence: 99%

Application and Development of Wavefront Sensor Technology

Zhao¹,

Cheng²

2017

IJMSA

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“…The Shack-Hartmann wavefront sensor is one of the most widely used wavefront sensors because of its great energy utilization, fast real-time sensing, and strong anti-noise ability [1]. It is widely employed in the detection of human eye aberrations [2,3], astronomical observation [4,5], laser beam purification [6,7], optical element identification [8,9], and other fields. To enhance detection performance, researchers have modified the instrument structure to introduce more information and proposed slope and curvature hybrid sensors, which have significant research value.…”

Section: Introductionmentioning

confidence: 99%

Fast and Highly Accurate Zonal Wavefront Reconstruction from Multi-Directional Slope and Curvature Information Using Subregion Cancelation

Liu,

Zhong,

et al. 2024

Applied Sciences

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The wavefront reconstruction is a crucial step in determining the performance of wavefront detection instruments. The wavefront reconstruction algorithm is primarily evaluated in three dimensions: accuracy, speed, and noise immunity. In this paper, we propose a hybrid zonal reconstruction algorithm that introduces slope and curvature information in the diagonal, anti-diagonal, horizontal, and vertical directions by dividing the neighbor sampling points into subregions in groups of four. By canceling the same parameters in integration equations, an algorithm using multi-directional slope–curvature information is achieved with only two sets of integration equations in each subregion, reducing the processing time. Simulation experiments show that the relative root-mean-square reconstruction error of this algorithm is improved by about 4 orders of magnitude compared with existing algorithms that use multi-directional slope information or slope–curvature information alone. Compared with the hybrid multi-directional slope–curvature algorithm, the proposed algorithm can reduce computation time by about 50% as well as provide better noise immunity and reconstruction accuracy. Finally, the validity of the proposed algorithm is verified by the null test experiment.

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“…Adaptive optics (AO) technology can effectively correct the dynamic wavefront distortion in real time [1]. It has been widely used in astronomical observation [2], laser beam purification, retinal high-resolution imaging, laser communication and other fields [3][4][5]. However, all AO systems applied in these fields would be affected by a bright light from background, backscatter or straylight.…”

Section: Introductionmentioning

confidence: 99%

Polarized Shack-Hartmann wavefront sensor

Yang

Huang²,

Xiao³

et al. 2023

Front. Phys.

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Shack-Hartmann wavefront sensor (SHWFS) has been widely used in adaptive optics (AO) systems to detect phase distortion characteristics. In laser communication, target detection, vision optics and other application fields, the performance of SHWFS is affected by bright skylight and scattered light, which restricted the working ability of the AO system severely. Therefore, this paper proposes a new polarized SHWFS (p-SHWFS) based on the principle of polarization imaging, which utilize the difference of state of polarization (SoP) between signal and stray light to improve the image contrast. The p-SHWFS can be composed simply by a micro-lens array and a linear polarization camera. The camera uses four directional polarizing filters at 0°, 135°, 45° and 90° on every four pixels. Thus, the degree of linear polarization (DoLP) and angle of linear polarization (AoLP) for the incident wavefront can be analyzed, and the signal-to-background ratio (SBR) can be improved in some certain depending on the difference of SoP. In this paper, we introduce the basic principle of the p-SHWFS and validate the feasibility and accuracy improvement by numerical simulation and practical experiments. The experimental results show that the p-SHWFS can improve obviously the measurement accuracy under strong stray light when the difference of SoP exists. That may give us some initial reference to reduce the influence of stray light in laser communication, target detection, vision optics and other application fields.

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Development of one-shot aspheric measurement system with a Shack–Hartmann sensor

Cited by 6 publications

References 12 publications

Application and Development of Wavefront Sensor Technology

Application and Development of Wavefront Sensor Technology

Fast and Highly Accurate Zonal Wavefront Reconstruction from Multi-Directional Slope and Curvature Information Using Subregion Cancelation

Polarized Shack-Hartmann wavefront sensor

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