Concepedia

Focal Length

Focal Length is the distance from the optical center of a lens or curved mirror to its focal point, where parallel incident rays of light converge or appear to diverge after refraction or reflection, distinguishing it as a fundamental parameter characterizing the light-converging or light-diverging capacity of an optical system.

2.5K

Publications

119.9K

Citations

8.6K

Authors

1.8K

Institutions

Publications per year

2017–2026

669

Parents

Publications

2.5K

A versatile camera calibration technique for high-accuracy 3D machine vision metrology using off-the-shelf TV cameras and lenses

R. Tsai · IEEE Journal on Robotics and Automation · 1987 · 5.8K citations

, , +17

Parametric Interaction of Focused Gaussian Light Beams

G. D. Boyd, D. A. Kleinman · Journal of Applied Physics · 1968 · 1.7K citations

, , +16

Formation of Optical Images by X-Rays

Paul Kirkpatrick, Albert V. Baez · Journal of the Optical Society of America · 1948 · 1.2K citations

, , +15

Variable focal lens controlled by an external voltage: An application of electrowetting

B. Berge, J. Peseux · The European Physical Journal E · 2000 · 1.1K citations

, , +7

Variable-focus liquid lens for miniature cameras

S. Kuiper, B.H.W. Hendriks · Applied Physics Letters · 2004 · 1K citations · Full text

, , +6

1–5 of 2.5K

Authors

8.6K

  1. SW
    Shin‐Tson Wu

    University of Central Florida, United States

    20 publications · 1.7K citations

    19

    h-index

  2. HZ
    Hans Zappe

    University of Freiburg, Germany

    22 publications · 1K citations

    19

    h-index

  3. HR
    Hongwen Ren

    University of Central Florida, United States

    25 publications · 1.6K citations

    18

    h-index

  4. JG
    J. G. Sivak

    University of Waterloo, Canada

    19 publications · 509 citations

    16

    h-index

  5. QW
    Qiong‐Hua Wang

    Sichuan University, China

    17 publications · 527 citations

    15

    h-index

1–5 of 8.6K

Institutions

1.8K

  1. Chinese Academy of Sciences

    Beijing, China

    27 h-index

    224 publications

    7K citations

  2. University of Central Florida

    Orlando, United States

    22 h-index

    94 publications

    7K citations

  3. Centre National de la Recherche Scientifique

    Paris, France

    20 h-index

    127 publications

    6.4K citations

  4. University of Freiburg

    Freiburg im Breisgau, Germany

    20 h-index

    86 publications

    3.2K citations

  5. Tsinghua University

    Beijing, China

    19 h-index

    88 publications

    2.7K citations

  6. University of Chinese Academy of Sciences

    Beijing, China

    19 h-index

    94 publications

    3.6K citations

  7. Nanyang Technological University

    Singapore, Singapore

    18 h-index

    67 publications

    3K citations

  8. Korea Advanced Institute of Science and Technology

    Daejeon, South Korea

    18 h-index

    66 publications

    2.8K citations

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Venues

  1. Optics Express

    275 publications · 11.3K citations

    53

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  2. Applied Optics

    181 publications · 8K citations

    48

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  3. Optics Letters

    117 publications · 5.9K citations

    40

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  4. Applied Physics Letters

    85 publications · 6.3K citations

    40

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  5. 26

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