Illuminance of the image in the ultraspeed cameras SFR, ZhLV-2 and ZhFR-3

Physics

Scientific paper

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High Speed Cameras, Illuminance, Imaging Techniques, Photographic Recording, Frame Photography, Lens Design, Optical Correction Procedure

Scientific paper

On the basis of the structural characteristics of their optical schemes, formulas are derived for the illuminance of the image in the streak camera (SFR), the high-speed slave-type camera ZhLV-2, and the slave photographic detector ZhFR-3, in both photographic detector and high-speed slow-motion variants. The SFR contains two lenses, the first of which is the Industar-51 lens with a focal distance of 210.5 mm. The optical scheme of the ZhFR-3 device differs from that of the SFR principally in the first lens, which can be a Jupiter-11 lens (focal distance 133 mm) or a Jupiter-3 lens (focal distance 52.5 mm) in addition to the Industar-51 lens. The ZhLV-2 utilizes afocal attachment as the focusing element. It is shown that in many cases the illuminance does not significantly depend on the distance from the target object. For concrete sets of operating conditions the change in the illuminance is analyzed.

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