Site map
About Smartec | Documentation | FAQ | Where to buy
The Art of CCTV
For example, ip camera  
Where to buy
E-mail: info@smartec-security.eu

Catalog

Varifocal lenses Smartec

Varifocal lenses Smartec

  • Wide range of varifocal lenses with IR correction feature: 2.7x, 4.4x, 11xlens1.jpg
  • Aspherical optics
  • Wide aperture
  • Wide variety of focal lengths
  • Extra Low dispersion glass
  • Compatible with megapixel cameras (STL-XMPXXXXDC)
  • Made in Japan

Varifocal Lenses with IR Correction Feature
With ordinary lenses, usually there is a problem of focus shift at transition from visible to infrared spectrum. In Smartec lenses, this effect is minimized, so they are recommended for use with Day/Night cameras. You will always get sharp image - both in color and black-white mode (when IR cut filter is removed).

Asphericai Lenses
Spherical lens system cannot guarantee ideal focusing. Spherical lens system includes a group of lenses for distortion compensation. In Smartec aspherical lens manufacturing process, precise finishing methods are used, allowing to achieve surface profiles, determined by cuspidal, quadratic, cubic, polynomial, and other functions.

High-Speed Iris
Our varifocal lenses are equipped with high-speed iris, providing wide aperture range of F0.95 to F360. Such aperture variety allows for real time change of optical transmission, and makes Smartec optics a perfect solution for use across a wide range of lighting conditions. The STL-3080DC lenses feature very low relative aperture of F0.95 and are recommended for use in extremely low light environment.

ED (Extra Low Dispersion) glass
When ordinary glass is used in lenses, it is rather difficult to achieve color aberration compensation. Both in visible and IR spectrums, there is secondary spectrum spread, resulting in image blur. In STL-5055DC this problem is solved due to use of a set of lenses made of low dispersion ED glass.

Megapixel Lens
For IP video systems using megapixel cameras (3 Mpix), we offer an extended family of STL-XMPXXXXDC series varifocal lenses with megapixel optics. These lenses allow to make the most of megapixel cameras' resolution, generating sharp image across the entire range of focal lengths.

Varifocal Lens Specifications 

Model:

STL-3080

STL-3080DC

STL-2712

STL-2712DC

STL-5055DC*

Format size:

1/3”

Mount Type:

CS

Focal Length:

3 - 8 mm

2.7 - 12 mm

5 - 55 mm

Aperture:

F1.4 - closed

F0.95-360

F1.2 - closed

F1.2-360

F1.4-360

Angle of View (H max):

92.9°х68.4°

97.4°x72.4°

53.1°x40°

Focus:

Manual

Manual

Manual

Manual

Manual

Zoom:

Manual

Manual

Manual

Manual

Manual

Iris:

Manual

DC

Manual

DC

DC

Dimensions:

39x39x46 mm

39x46.3x47 mm

39x39x57 mm

39x50x57 mm

42x48x64 mm

Weight:

45 g

64 g

72 g

93 g

* Without IR Correction

 

Varifocal Megapixel Lens Specifications

 

Model:

STL-MP2812DC

STL-3MP3180DC

STL-3MP1250DC

Format size:

1/3”

1/2.7”

1/2.7”

Recommended for cameras:

1.3 Mpix

3 Mpix

3 Mpix

Mount Type:

CS

CS

CS

Focal Length:

2.8-12 mm

3.1-8 mm

12.5-50 mm

Aperture:

F1.3-360

F1.2 - closed

F1.4 - closed

Angle of View (H):

1/2.7” (16:9)

-

105.4°-42.2°

26.3°-6.7°

1/2.7” (4:3)

-

95.9°-38.7°

24°-6.2°

1/3” (4:3)

102.°-23.7°

86.7°-35.2°

21.7°-5.6°

Focus:

manual

manual

manual

Zoom:

manual

manual

manual

Iris:

DC

DC

DC

Dimensions:

37.5x48x56 mm

37x48.2x55 mm

46x59.3x58.4 mm

Weight:

71 g

59 g

75 g

* Without IR Correction

Copyright Smartec 2006-2017