Search Results - "Focal length"

英红茶萎芽病高清原位变焦图像采集与识别试验研究.

Alternate Title: Experiment on High-Definition In-situ Zoom Image Acquisition and Recognition of Yingde Black Tea Bud Blight.

Authors: 俞 龙 程自强 黎健龙 et al.

Source: Agricultural Mechanization Research. Oct2025, Vol. 47 Issue 10, p219-225. 7p.

Reconstructing a Sphere and the Camera Focal Length from a Single View by Fitting Planes.

Authors: Ozgur, Erol Alkhatib, Mohammad Mezouar, Youcef et al.

Source: International Journal of Computer Vision. Apr2026, Vol. 134 Issue 4, p1-21. 21p.

Subjects: Focal length, Three-dimensional imaging, Curve fitting, Perspective (Art), Statistical sampling

Verification of Applicability of Long Focal MWIR Infrared Camera †.

Authors: Toriyama, Dai Yaoita, Tatsuya

Source: Proceedings (2504-3900). 2025, Vol. 129 Issue 1, p64. 4p.

Extreme ultraviolet metalens by vacuum guiding.

Authors: Ossiander, Marcus Meretska, Maryna Leonidivna Hampel, Hana Kristin et al.

Source: Science (pre-March 2025). 4/7/2023, Vol. 380 Issue 6640, p59-63. 5p. 4 Color Photographs.

Estimating method for calculation the focal length of lenses using digital image processing technique.

Authors: Hassan, Hassan Dakhel Malik, Mutasim Ibrahim

Source: AIP Conference Proceedings. 2026, Vol. 3408 Issue 1, p1-8. 8p.

Compact 18.5 mm F/2.0 Athermalized Wide-Angle Lens with Low Focus Breathing: Design and Optimization.

Authors: Xia, Wenhao Luo, Daobin Wu, Chao et al.

Source: Applied Sciences (2076-3417); Apr2026, Vol. 16 Issue 8, p3848, 16p

Behavior of Bessel–Whittaker–Gaussian beams through a paraxial optical system.

Authors: Iraoui, F. Khannous, F. Belafhal, A.

Source: Optical & Quantum Electronics. Apr2025, Vol. 57 Issue 4, p1-19. 19p.

Subjects: Optical communications, Focal length, Fourier transforms, Laser beams

A computer study to simulate a magnetic objective lens and analyze the effect of the distance between pole pieces on its focal properties.

Authors: Hussein, Mohammed Abdullah¹ (AUTHOR) mohdphy@uokirkuk.edu.iq

Source: Russian Physics Journal. Apr2025, Vol. 68 Issue 4, p651-657. 7p.

Subjects: Optical properties, Focal length, Finite element method, Simulation methods & models, Achromatism, Optical aberrations

Design and characterization of a compact Einzel lens for portable quadrupole mass spectrometry (QMS).

Authors: Mehta, Khushbu Minhas, Ashudeep Kaur, Maninder et al.

Source: Instrumentation Science & Technology. 2025, Vol. 53 Issue 3, p351-362. 12p.

Subjects: Field-effect transistors, Focal length, Ion sources, Gas detectors, Mass spectrometry

Radial graded‐index chalcogenide glass lenses for mid‐infrared optics.

Authors: Wei, Chunjin Yang, Anping Chen, Qian et al.

Source: Journal of the American Ceramic Society. Jun2025, Vol. 108 Issue 6, p1-8. 8p.

Subjects: Focal length, Chalcogenide glass, Thermography, Refractive index, Light sources

Design and Structure of a Non-Coaxial Multi-Focal Composite Fresnel Acoustic Lens for Synergistic Ultrasound Stimulation of Multiple Brain Regions.

Authors: Wu, Ruiqi Shi, Fangfang Tao, Juan et al.

Source: Sensors (14248220). Jun2025, Vol. 25 Issue 11, p3299. 16p.

Broadband Achromatic Hybrid Metalens Module with 100° Field of View for Visible Imaging.

Authors: Wu, Peixuan Li, Xingyi Xing, Yuanyuan et al.

Source: Sensors (14248220). May2025, Vol. 25 Issue 10, p3202. 9p.

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

Authors: Baumann, Luiza Pereira, Cristian K. Costa, Adilson B. et al.

Source: Analytical Letters. 2025, Vol. 58 Issue 8, p1388-1402. 15p.

MFBCE: A Multi-Focal Bionic Compound Eye for Distance Measurement.

Authors: Liu, Qiwei Wang, Xia Xue, Jiaan et al.

Source: Sensors (14248220). May2025, Vol. 25 Issue 9, p2708. 19p.

Influence of Focal Length Position of Focusing Lens on Plywood Discoloration Under Different Modes of CO2 Laser Engraving.

Alternate Title: Utjecaj položaja žarišne duljine fokusne leće na promjenu boje furnirske ploče pri različitim parametrima graviranja CO2 laserom.

Authors: Gochev, Zhivko Vichev, Pavlin

Source: Wood Industry / Drvna Industrija. 2025, Vol. 76 Issue 2, p115-123. 9p.

Cubic‐Encoded Moiré Metasurface Zoom System for Depth‐Invariant Imaging.

Authors: Wang, Di Feng, Yuxiang Zhou, Shuai et al.

Source: Laser & Photonics Reviews. Jun2026, p1. 11p. 8 Illustrations.

White-pupil fibre-fed èchelle spectrograph of the Russian-Turkish 1.5 m telescope: optical design and analysis.

Authors: BAYAR, Cevdet ÜNAL, Nuri

Source: Turkish Journal of Physics. 2025, Vol. 49 Issue 2, p44-62. 19p.

Subjects: Focal planes, Focal length, Astronomical spectroscopy, Optical spectra, Spectrum analysis

Fist‐sized aerial volumetric display with femtosecond laser drawing.

Authors: Kumagai, Kota Mori, Tatsuki Hayasaki, Yoshio

Source: Journal of the Society for Information Display. Mar2025, Vol. 33 Issue 3, p168-174. 7p.

Subjects: Focal length, Femtosecond pulses, Numerical apertures, Telecommunication, Avatars (Virtual reality)

Quadri-Wave Lateral Shearing Interferometry for Precision Focal Length Measurement of Optical Lenses.

Authors: Li, Ze Cheung, Chi Fai Zhao, Wen Kai et al.

Source: Applied Sciences (2076-3417); Jan2026, Vol. 16 Issue 2, p757, 20p

Evaluation of Network Design and Solutions of Fisheye Camera Calibration for 3D Reconstruction.

Authors: Rezaei, Sina Arefi, Hossein

Source: Sensors (14248220). Mar2025, Vol. 25 Issue 6, p1789. 24p.