Datasheet

Lenses | Lenses | 323
Varifocal Lenses
Features
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High-quality optics
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1/3-inch and 1/2-inch formats
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Reliable, robust construction
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Focal length options
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Compact design
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Manual and DC-iris versions
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Manual focus and zoom control
For optimizing angular fields right on site, varifocal lenses
are the most versatile and practical solution available.
These lenses allow for setting virtually any angle of field,
which maximizes surveillance effects. Installers do not
need to carry several different focal length lenses – and
installation is more efficient because they can find the
right angles of field without moving the camera set-up. If
the field-of-view requirements change after installation,
modification is simple by just altering the lens’ focal
length settings.
Functions
This series includes both manual and DC-iris varifocal
lenses. They are compact, rugged, and available in 1/3-
inch and 1/2- inch image formats. The series is organized
by sensitivity, optical resolution, and range to match the
wide range of Dinion camera applications.
These varifocal lenses come with a standard C or CS
mount for use with a variety of cameras. The DC-iris
control connection is a four-pin standard plug that fits
directly into the camera’s iris output. And the lenses
deliver impressive optical quality due to their high
standards for resolution, contrast reproduction, and
coating.
The mechanical construction is designed to withstand
both frequent DC-iris control operations and the
environmental stress of security installations. For flexible,
high-quality, reliable lenses that match a camera’s
performance, this varifocal series is the ideal solution.
Installation/Configuration Notes
4-pin DC-iris connector (front view)
Pin 1: Damping coil -
Pin 2: Damping coil +
Pin 3: Driving coil + (open)
Pin 4: Driving coil -
Lens type L mm (in) D mm (in)
LTC 3361/32 42 (1.65) 36 (1.42)
LTC 3361/41 59 (2.32) 44 (1.73)
LTC 3361/50 55(2.17) 34 (1.34)
LTC 3361/60 45.3 (1.78) 33 (1.3)
LTC 3371/21 59.2 (2.33) 42 (1.65)
LTC 3371/50 61.5 (2.42) 44 (1.73)
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