Article
Multidisciplinary Sciences
Clara Benedi-Garcia, Maria Vinas, Carlos Dorronsoro, Stephen A. Burns, Eli Peli, Susana Marcos
Summary: The research demonstrates that both chromatic and monochromatic aberrations in the eye affect the optical quality of images projected on the retina, but their combination is not always simply additive, and the eye has a high degree of adaptability to blur.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Barbara Swiatczak, Frank Schaeffel
Summary: During the development of myopia, the retina loses its ability to control eye growth. By comparing the sharpness of red and blue images, it can be determined whether the image is in front or behind the retinal plane. Young people with myopia no longer have the ability to detect the focal point based on longitudinal chromatic aberration.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Analytical
Yuzhuo Zhang, Yaqin Sun, Nan Gao, Zhaozong Meng, Zonghua Zhang
Summary: This study proposed a phase target method based on projector radial chromatic aberration measurement and calibration to improve the color fringing issue in a color fringe projection 3D measurement system. Experimental results showed that the proposed method effectively measured and calibrated the radial chromatic aberration of the projector, leading to improved projection quality.
Article
Optics
J. B. Ohland, Y. Zobus, U. Eisenbarth, B. Zielbauer, D. Reemts, V Bagnoud
Summary: This article revisits the use of off-axis parabolic telescopes in high-intensity laser systems and proposes a suitable setup for fast and repeatable alignment.
Article
Optics
Zilong Zhang, Rongsheng Lu
Summary: The dispersion objective is a crucial device for chromatic confocal sensor (CCS), affecting the measurement range and maximum measurement slope. This paper presents two initial structures of dispersion objectives based on doublet lenses for CCS, suitable for large dispersion range and high NA design, respectively. Through categorizing doublet lenses by optical power distribution and glass material distribution, combined with different dispersion types, 36 doublet lens structures were obtained for sensor design optimization. The analysis showed that different dispersion types have varying effects on dispersion range and NA, leading to the construction of two optimal initial structures for different sensor requirements.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Optics
Miao Xu, Yating Liu, Ye Yuan, Hongbo Lu, Longzhen Qiu
Summary: This work demonstrates an adaptive liquid lens using a novel transparent electrically responsive fluid, DBA. The DBA liquid lens with a hemispherical piano-convex shape can change its curvature according to various input voltages. The proposed DBA liquid lens exhibits high optical transmittance, good thermal stability, and excellent imaging property.
Article
Optics
Yue Wang, Jiarui Lei, Jianfeng Zheng, Xulongoi Wang, Miao Cheng, Ming Liu, Junan Zhang, Weibin Chen, Xiaoyao Hu, Weizhong Gu, Shiwei Guo, Xiaobo Hu, Zhigang Gao, Dong Liu
Summary: A microscope requires careful assembly, alignment, and testing due to its complex lenses. Chromatic aberration correction is important but can increase weight and cost. However, this paper proposes an algorithm that shifts some correction tasks to post-processing, achieving higher-quality images without changing hardware or optical parameters.
Article
Ophthalmology
George D. Kymionis, Jaeryung Kim, Myrsini Petrelli, Michael A. Grentzelos, Kattayoon Hashemi, Georges Wagnieres
Summary: The study found that the higher the RI of the IOL, the higher the external surface reflections, with IOLs made of high RI materials having over three times higher reflectivity compared to those with low RI. Ultraviolet or blue light filtering did not show significant correlation with external reflectance.
JOURNAL OF REFRACTIVE SURGERY
(2021)
Article
Optics
Antonin Miks, Petr Pokorny
Summary: This paper presents a method for calculating the initial configuration of a simple optical system using an achromatic meniscus and an achromatic member. The initial parameters for further optimization are determined using third-order aberration theory. The method is demonstrated through an example.
Article
Multidisciplinary Sciences
Antonio J. Del Aguila-Carrasco, Ivan Marin-Franch
Summary: Previous research suggested that visual system can anticipate predictable target motion like sinusoidal movement, but the validity of such predictability in dynamic accommodation experiments is questioned. This study evaluated the impact of anticipation, learning, and fatigue on dynamic accommodation, finding that fatigue had a greater influence than anticipation or learning.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Hitesh G. B. Gowda, Matthias C. Wapler, Ulrike Wallrabe
Summary: This article presents two versions of tunable achromatic doublets based on piezo-electrically actuated glass membranes. By controlling the actuation voltages, the chromatic focal shift and focal power can be independently adjusted. These doublets have a large aperture, short response time, and provide spherical aberration correction.
Article
Optics
Jessica Gomes, Kishor Sapkota, Sandra Franco
Summary: The study aimed to evaluate the changes in on-axis and off-axis primary and secondary spherical aberrations with accommodation in subjects with accommodative insufficiency (AI) compared to a control group. The results showed differences in the changes of spherical aberrations with accommodation between the two groups.
Article
Optics
Hui Yu, Jiamei Li, Dawei Li, Qiong Zhou, Xiuqing Jiang, Fengnian Lv, Xingqiang Lu
Summary: This paper proposes a novel continuous zooming scheme based on the chromatic aberration effect of the lens groups for high-power laser applications in inertial confinement fusion. Theoretical simulations demonstrate the positive linear relationship between the focal spot size and beam wavelength, supporting the effectiveness of the proposed scheme.
Article
Optics
Shin Ishihara, Antonin Sulc, Imari Sato
Summary: This paper introduces a method for estimating depth from a single multispectral image using chromatic aberration. By recovering defocus blur, a continuous depth map can be obtained from the image. The proposed method requires only a wide-aperture lens and a multispectral camera, and uses a simple yet effective depth-of-field synthesis method.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2021)
Article
Optics
Kishor Sapkota, Jessica Gomes, Sandra Franco
Summary: Knowledge of the effect of accommodation on image quality of peripheral retina is important, but studies in this area are limited. This study found that accommodation asymmetrically affected higher order aberrations in the central and peripheral retina.