Works about FOCAL length

Results: 807

Planar Wide-Angle Imaging System with a Single-Layer SiC Metalens.

Published in:

Nanomaterials (2079-4991), 2025, v. 15, n. 13, p. 1046, doi. 10.3390/nano15131046

By:

Liu, Yiyang;
Zhang, Qiangbo;
Zhang, Changwei;
Wang, Mengguang;
Zheng, Zhenrong

Publication type:

Article

Calibration and Validation of Phase One Industrial Cameras.

Published in:

International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, 2025, v. 48, n. 1/W4, p. 73, doi. 10.5194/isprs-archives-XLVIII-1-W4-2025-73-2025

By:

Ladstädter, Richard;
Gutjahr, Karlheinz;
Perko, Roland;
Woschitz, Helmut

Publication type:

Article

Reflective Tunable Coded Metalens Based on Phase Change Materials.

Published in:

Journal of Electronic Materials, 2025, v. 54, n. 8, p. 6768, doi. 10.1007/s11664-025-12095-z

By:

Feng, Guanjun;
Tao, Yong;
Zheng, Mingfeng;
Mao, Mingke;
Liu, Fuhai;
Li, Yanling;
Tian, Ying;
Gu, Manna;
Zhang, Peng

Publication type:

Article

بررسی آماری - تجربی تأثیر فاصله کانونی و جابجایی بر سوراخ کاری لیزری روی ورق سوپر آلیاژ هستلوی ایکس با استفاده از لیزر فیبری تک پالس.

Published in:

Advanced Materials in Engineering, 2025, v. 44, n. 2, p. 49, doi. 10.47176/jame.44.2.1083

By:

مصطفی قدیمی دفرا;
رضا شجاع رضوی;
سید مسعود برکت;
علی خرم;
محمد عرفان منش

Publication type:

Article

Monocular Unmanned Boat Ranging System Based on YOLOv11-Pose Critical Point Detection and Camera Geometry.

Published in:

Journal of Marine Science & Engineering, 2025, v. 13, n. 6, p. 1172, doi. 10.3390/jmse13061172

By:

Wu, Yuzhen;
Suo, Yucheng;
Chen, Xinqiang;
Yang, Yongsheng;
Zhang, Han;
Wang, Zichuang;
Postolache, Octavian

Publication type:

Article

A homemade focus position indicator for a Schmidt-Cassegrain telescope.

Published in:

Journal of the British Astronomical Association, 2025, v. 135, n. 3, p. 172

By:

Dawson, James;
Severn, Richard

Publication type:

Article

Sunskirting comet C/2024 63 (ATLAS).

Published in:

Journal of the British Astronomical Association, 2025, v. 135, n. 3, p. 157

By:

James, Nick

Publication type:

Article

Indeterminacy of Camera Intrinsic Parameters in Structure from Motion Using Images from Constant-Pitch Flight Design.

Published in:

Remote Sensing, 2025, v. 17, n. 12, p. 2030, doi. 10.3390/rs17122030

By:

Ho, Truc Thanh;
Sato, Riku;
Kanno, Ariyo;
Imai, Tsuyoshi;
Yamamoto, Koichi;
Higuchi, Takaya

Publication type:

Article

Electron Odd‐Pearcey Gaussian Beams Propagating In a Constant Magnetic Field.

Published in:

Annalen der Physik, 2024, v. 536, n. 7, p. 1, doi. 10.1002/andp.202300529

By:

Cai, Xuezhen;
Tang, Huilin;
Huang, Haoyu;
Wu, Hailong;
He, Xingyi;
Chen, Yanru;
Deng, Dongmei

Publication type:

Article

Anisotropic Plasmonic Metasurfaces with Linear Polarization‐Dependent Focusings.

Published in:

Annalen der Physik, 2023, v. 535, n. 9, p. 1, doi. 10.1002/andp.202300197

By:

Zhang, Heyi;
Zhang, Runxuan;
He, Canhui;
Li, Changqing;
Song, Zhengyong

Publication type:

Article

Symmetric Swallowtail Beams in the Rectangle Frame.

Published in:

Annalen der Physik, 2023, v. 535, n. 3, p. 1, doi. 10.1002/andp.202200466

By:

Wei, Quanfeng;
Jiang, Junjie;
Mo, Zhenwu;
Xu, Danlin;
Cai, Xuezhen;
Liang, Zehong;
Shi, Jingyi;
Huang, Haoyu;
Deng, Dongmei

Publication type:

Article

Electron Symmetric Pearcey Gaussian Vortex Beams.

Published in:

Annalen der Physik, 2022, v. 534, n. 9, p. 1, doi. 10.1002/andp.202200202

By:

Huang, Haoyu;
Tang, Huilin;
He, Xingyi;
Wu, You;
Cai, Xuezhen;
Deng, Xiaofang;
Deng, Dongmei

Publication type:

Article

Manipulation and Improvement of Autofocusing Properties for Circular Butterfly Beams.

Published in:

Annalen der Physik, 2022, v. 534, n. 9, p. 1, doi. 10.1002/andp.202200235

By:

Cai, Yiming;
Hu, Juntao;
Sun, Zhuo;
Lan, Yanping;
Teng, Houan;
Qian, Yixian

Publication type:

Article

Prepare to Square the Circular Beam.

Published in:

Microscopy & Microanalysis, 2024, v. 30, p. 1, doi. 10.1093/mam/ozae044.382

By:

Alink, Lambertus M;
Chua, Eugene Y D;
Kopylov, Mykhailo;
Marco, Alex de

Publication type:

Article

Application of Micro X-ray Fluorescence and X-ray Tomographic Analysis of Metal and Actinide Materials.

Published in:

Microscopy & Microanalysis, 2024, v. 30, p. 1, doi. 10.1093/mam/ozae044.128

By:

Patterson, Brian M;
Cordes, Nikolaus L;
Veelen, Arjen Van;
White, Joshua;
Hunter, Bryan K

Publication type:

Article

Stroboscopic High-Duty-Cycle GHz Time-Resolved Microscope: First Proof of a Picosecond Beam Operated at GHz Level on a 200 keV Beamline.

Published in:

Microscopy & Microanalysis, 2019, p. 1964, doi. 10.1017/S1431927618010309

By:

Liu, Ao;
Jing, Chunguang;
Kanareykin, Alexei;
Zhao, Yubin;
Reed, Bryan;
Masiel, Daniel;
Zhu, Yimei;
Lau, June W.

Publication type:

Article

A 120 kV Transmission Electron Microscope Series for Both Life Science and Material Science Fields.

Published in:

2019

By:

Tamura, K.;
Kubo, T.;
Nagaoki, I.;
Mise, H.;
Wakui, A.;
Wayama, M.;
Matsumoto, H.;
Yaguchi, T.

Publication type:

Abstract

Calculating Parameters of Pinhole in Collimation System of Albedo Computed Tomography of Steel Products.

Published in:

Russian Journal of Nondestructive Testing, 2020, v. 56, n. 2, p. 171, doi. 10.1134/S1061830920020102

By:

Zhuravskii, E. E.;
Kapranov, B. I.;
Belkin, D. S.;
Chakhlov, S. V.;
Shtein, A. M.

Publication type:

Article

The Imaging X-ray Polarimetry Explorer (IXPE) and New Directions for the Future.

Published in:

Instruments (2410-390X), 2024, v. 8, n. 2, p. 25, doi. 10.3390/instruments8020025

By:

Soffitta, Paolo

Publication type:

Article

Synthesis Emission Spectra of (LIPS) Technique for Cu, Ag Nanoparticles and their Antibacterial Activity.

Published in:

Al-Mustansiriyah Journal of Science, 2021, v. 32, n. 3, p. 49, doi. 10.23851/mjs.v32i3.959

By:

Nasif, Hadeel K.;
Ahmed, Baida M.;
Aadim, Kadhim A.

Publication type:

Article

Optical-Quality Assessment of a Miniaturized Intraocular Telescope.

Published in:

Journal of Clinical Medicine, 2023, v. 12, n. 10, p. 3375, doi. 10.3390/jcm12103375

By:

Nepita, Irene;
Raimondi, Raffaele;
Piazza, Simonluca;
Diaspro, Alberto;
Vidal-Aroca, Faustino;
Surdo, Salvatore;
Romano, Mario R.

Publication type:

Article

The Omnipresent Gaze: Exploring Surveillance in Amir Naderi's Goodbye Friend (1971).

Published in:

Journal of Film & Video, 2024, v. 76, n. 4, p. 19, doi. 10.5406/19346018.76.4.03

By:

Nematollahi, Javad;
Sayyad, Alireza

Publication type:

Article

Simple Method for Calcium Determination in Crude Oil Emulsion Using Digital Image Colorimetry.

Published in:

Analytical Letters, 2025, v. 58, n. 8, p. 1388, doi. 10.1080/00032719.2024.2368027

By:

Baumann, Luiza;
Pereira, Cristian K.;
Costa, Adilson B.;
Muller, Aline L.H.;
Muller, Edson I.

Publication type:

Article

资源三号卫星影像无控制区域网平差.

Published in:

Journal of Remote Sensing, 2019, v. 23, n. 2, p. 205, doi. 10.11834/jrs.20198067

By:

孙, 钰珊;
张, 力;
许, 彪;
张, 勇

Publication type:

Article

CX-6(02)微纳卫星超分辨率成像.

Published in:

Journal of Remote Sensing, 2019, v. 23, n. 2, p. 196, doi. 10.11834/jrs.20198014

By:

谭, 政;
相, 里斌;
吕, 群波;
孙, 建颖;
李, 平付;
高, 爽;
尹, 增山

Publication type:

Article

Computation of Analytical Zoom Locus Using Padé Approximation.

Published in:

Mathematics (2227-7390), 2020, v. 8, n. 4, p. 581, doi. 10.3390/math8040581

By:

Kim, Kang Min;
Choe, Sun-Ho;
Ryu, Jae-Myung;
Choi, Hojong

Publication type:

Article

A High-Quality and Convenient Camera Calibration Method Using a Single Image.

Published in:

Electronics (2079-9292), 2024, v. 13, n. 22, p. 4361, doi. 10.3390/electronics13224361

By:

Qin, Xufang;
Xia, Xiaohua;
Xiang, Huatao

Publication type:

Article

Maritime Electro-Optical Image Object Matching Based on Improved YOLOv9.

Published in:

Electronics (2079-9292), 2024, v. 13, n. 14, p. 2774, doi. 10.3390/electronics13142774

By:

Yang, Shiman;
Cao, Zheng;
Liu, Ningbo;
Sun, Yanli;
Wang, Zhongxun

Publication type:

Article

A Metalens Design for On- and Off-Center Focusing with Amorphous Silicon Hydrogenated (a-Si:H)-Based 1D Array in Visible Spectrum.

Published in:

Electronics (2079-9292), 2023, v. 12, n. 13, p. 2953, doi. 10.3390/electronics12132953

By:

Ali, Jawad;
Ahmad, Ashfaq;
Choi, Dong-you

Publication type:

Article

A Study on the Development of a White Light Source Module for a Large-Capacity Searchlight Using a Blue Laser Diode.

Published in:

Electronics (2079-9292), 2023, v. 12, n. 3, p. 760, doi. 10.3390/electronics12030760

By:

Lee, Seung-Min;
Cho, Joon-Ho;
Lee, Wan-Bum

Publication type:

Article

Simultaneous Beam Forming and Focusing Using a Checkerboard Anisotropic Surface.

Published in:

Electronics (2079-9292), 2022, v. 11, n. 22, p. 3823, doi. 10.3390/electronics11223823

By:

Park, Jeong-Hyun;
Lee, Jae-Gon

Publication type:

Article

A VOHE System for Underwater Communications.

Published in:

Electronics (2079-9292), 2020, v. 9, n. 10, p. 1557, doi. 10.3390/electronics9101557

By:

Peng, Yang;
Nagase, Tomoyuki;
You, Shan;
Kanamoto, Toshiki

Publication type:

Article

Numerical Computation-Based Position Estimation for QR Code Object Marker: Mathematical Model and Simulation.

Published in:

Computation, 2022, v. 10, n. 9, p. N.PAG, doi. 10.3390/computation10090147

By:

Teoh, Mooi Khee;
Teo, Kenneth T. K.;
Yoong, Hou Pin

Publication type:

Article

The not-quite-lost art of telescope making.

Published in:

Journal of the British Astronomical Association, 2024, v. 134, n. 4, p. 254

By:

Arditti, David

Publication type:

Article

Smart telescopes.

Published in:

Journal of the British Astronomical Association, 2024, v. 134, n. 2, p. 100

By:

Arditti, David

Publication type:

Article

Toscanoptics 250mm f/16 Dall-Kirkham Cassegrain.

Published in:

Journal of the British Astronomical Association, 2024, v. 134, n. 1, p. 66

By:

Dole, Chris

Publication type:

Article

Imaging Jupiter.

Published in:

Journal of the British Astronomical Association, 2023, v. 133, n. 5, p. 290

By:

Arditti, David

Publication type:

Article

Eclipse in Exmouth.

Published in:

Journal of the British Astronomical Association, 2023, v. 133, n. 5, p. 278

By:

Frost, Mike;
James, Nick

Publication type:

Article

Comparing similar ED & standard-glass refractors.

Published in:

Journal of the British Astronomical Association, 2023, v. 133, n. 2, p. 87

By:

Anderson, Peter

Publication type:

Article

'Why won't my GoTo work?' & other telescope bugbears.

Published in:

Journal of the British Astronomical Association, 2020, v. 130, n. 4, p. 208

By:

Arditti, David

Publication type:

Article

Memories of Dave Gavine (1937-2020).

Published in:

Journal of the British Astronomical Association, 2020, v. 130, n. 3, p. 177

By:

Pratt, Alex;
Buczynski, Denis;
Farquharson, John;
Smith, Trevor;
Ahad, Abdul

Publication type:

Article

Several telescopes on one mounting.

Published in:

Journal of the British Astronomical Association, 2019, v. 129, n. 6, p. 324

By:

Arditti, David

Publication type:

Article

Understanding image defects (part I).

Published in:

Journal of the British Astronomical Association, 2019, v. 129, n. 2, p. 71

By:

Arditti, David

Publication type:

Article

A Comparative Study of Optical System to Improve Image Quality of Smartphone-based Ophthalmoscope.

Published in:

Malaysian Journal of Medicine & Health Sciences, 2021, v. 17, p. 40

By:

Hassan, Harnani;
Nik Ahmad Rushdi, Nik Amir Afif;
Herman, Sukreen Hana;
Sijung Hu;
Mohamad, Zulfakri

Publication type:

Article

The effect of UVB radiation on the optical quality of rainbow trout eye-lenses.

Published in:

Scientific Reports, 2025, v. 15, n. 1, p. 1, doi. 10.1038/s41598-025-99230-2

By:

Kocemba, Marta;
Waller, Edward;
Waker, Anthony J.

Publication type:

Article

Optofluidic lens with tunable focal length and asphericity.

Published in:

Scientific Reports, 2014, p. 1, doi. 10.1038/srep06378

By:

Mishra, Kartikeya;
Murade, Chandrashekhar;
Carreel, Bruno;
Roghair, Ivo;
Jung Min Oh;
Manukyan, Gor;
van den Ende, Dirk;
Mugele, Frieder

Publication type:

Article

Curriculum learning for ab initio deep learned refractive optics.

Published in:

Nature Communications, 2024, v. 15, n. 1, p. 1, doi. 10.1038/s41467-024-50835-7

By:

Yang, Xinge;
Fu, Qiang;
Heidrich, Wolfgang

Publication type:

Article

A comparison of digital morphometry and clinical measurements of ears.

Published in:

Journal of Plastic Surgery & Hand Surgery (Taylor & Francis Ltd), 2013, v. 47, n. 4, p. 317, doi. 10.3109/2000656X.2013.766886

By:

Öberg, Martin;
Svensson, Henry;
Björk, Christoffer;
Flodin, Johan;
Wikström, Sven Olof

Publication type:

Article

Star Identification Algorithm Based on Dynamic Distance Ratio Matching.

Published in:

Remote Sensing, 2025, v. 17, n. 1, p. 62, doi. 10.3390/rs17010062

By:

Dai, Ya;
Shi, Chenguang;
Ben, Liyan;
Zhu, Hua;
Zhang, Rui;
Wu, Shufan;
Shan, Sixiang;
Xu, Yu;
Zhou, Wang

Publication type:

Article

Improving Real-Scene 3D Model Quality of Unmanned Aerial Vehicle Oblique-Photogrammetry with a Ground Camera.

Published in:

Remote Sensing, 2024, v. 16, n. 21, p. 3933, doi. 10.3390/rs16213933

By:

Xu, Jinghai;
Zhang, Suya;
Jing, Haoran;
Hancock, Craig;
Qiao, Peng;
Shen, Nan;
Blay, Karen B.

Publication type:

Article