Simplified version of zoom lens for television cameras where image remains in focus on photocathode when focal length of optical system is varied, creating illusion that camera is moving toward or away from scene; brightness of image remains constant since relative aperture is unchanged; image varied over range of 4:1.
Zoom lenses
Wireless World
Wireless World ; 55 , n 7
1949
Aufsatz (Zeitschrift)
Englisch
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Infrared optics and zoom lenses
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|Perspective projection camera model for zoom lenses
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|Zooming-component loci of mechanically compensated zoom lenses
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|Zoom lens design using gradient-index lenses [2173-20]
British Library Conference Proceedings | 1994
|Modeling and calibration of automated zoom lenses (Invited Paper) [2350-18]
British Library Conference Proceedings | 1994
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