Bosch LTC-3783-51, LTC-3674-20 Specsheet
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Video | IR-Corrected Zoom and Varifocal Lenses
IR-Corrected Zoom and Varifocal Lenses
www.boschsecurity.com
u IR corrected for operation with high performance
day/night and monochrome cameras
u 1/3-inch and 1/2-inch formats
u High-quality optics
With the introduction of true day/night cameras, CCTV
cameras have become more versatile - and now lenses
must match the wide range of light conditions covered
by those cameras. (Infrared) corrected lenses provide
fully adjusted and sharp focused images in daylight
and at nigh when used in conjunction with IR
illuminators. This makes IR lenses the best choice for
high performance true day/night cameras.
The IR range includes 1/3-inch and 1/2-inch format
lenses. The 1/3-inch lenses are used exclusively for
1/3-inch type cameras. The high design standards of
the 1/2-inch lenses make them a perfect match for
both 1/3-inch and 1/2-inch type cameras. When used
with 1/3-inch type cameras, the 1/2-inch lenses
provide a more "telephoto" effect.
For auto iris control, all lenses use the standard fourpin EIAJ connector, which fits directly into the
camera's iris output. Varifocal lenses are DC iris direct
drives, while zoom lenses have Video-iris drives.
For zoom focus and pre-position control, the lenses
are fitted with an 8-pin DIN connector. The 18x zoom
lens also features manual iris override. Impressive
u DC-iris and Video-iris models
u Varifocal and zoom lenses
optical quality is a result of ED glass elements,
aspherical lenses, and multi-layer coatings. These
lenses maintain focus to IR wavelengths of 950 nm.
The mechanical construction is robust enough to
withstand frequent control operations of the iris,
zoom, and focus functions.
Auto iris Connector (Solder side view)
1 Power
2 Not Used
40.4
1.59
5.3
0.21
44.4
1.75
38.3
1.51
24.6
0.97
3.6
0.14
50.3
1.98
4
0.16
8.6
0.34
31.8
1.25
62
2.44
4
0.16
75.5
2.97
42.5
1.67
33
1.3
134.8
5.31
112.5
4.43
22.3
0.88
47.3
1.86
1/4-20UNC
75.5 (2.97)
42.5 (1.67)
33 (1.3)
154.5 (6.08)
33 (1.3)
121.5 (4.78)
17.526 (0.69)
58.5 (2.3) 4 (0.16)
1/4-20UNC
66 (2.6)
Ø65 (2.56)
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2 | IR-Corrected Zoom and Varifocal Lenses
3 Video
4 Ground
Certifications and approvals
Region Certification
Europe CE
Installation/configuration notes
Dimensions LTC 3364/21
Dimensions LTC 3664/30
Dimensions LTC 3764/20
Dimensions LTC 3774/40
Dimensions LTC 3783/51
Dimensions LTC 3664/40
Dimensions LTC 3674/20
Dimensions LTC 3793/51
Zoom/Focus Connector (Solder side view)
1 Pre-pos. Zoom Pot. Wiper 5 Focus Motor Control
(+=near)
2 Focus Motor Return 6 Zoom Motor Return
3 Pre-pos. Focus Pot. Wiper 7 Pre-pos. Pot. Supply
4 Zoom Motor Control (+=tele) 8 Pre-pos. Pot. Return
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