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CCTV lenses
Varifocal lenses
for day/night cameras

Sito in italianoAutoiris (DC)varifocal lens 3.6-18mm for day/night cameras


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Manual - Ultra wide for megapixel
Megapixel Fujinon - Autoiris - Varifocal - Pinhole
Manual zoom - Motorized zoom - Accessories

Available varifocal lenses:
Ultra compact - 2-5-10mm - 3.5-8mm - 5.5-33mm - 5.0-50mm - 7.0-70mm
 IR (day/night) - Fish-eye
 Megapixel manual - Megapixel auto iris
Megapixel IR manual - Megapixel IR autoiris

Focusing point changes after zooming, when using varifocal lenses.
 Therefore, in this case, focusing operation must be made again, contrarily to what happens by using zoom lenses.

 

Day/night cameras are colour cameras that, below a preset value of light, show black/white pictures only.
Some cameras can also "view" in full nightime darkness using an infrared illumination.
However standard lenses cannot focus properly in the infrared area.
These lenses which are especially designed for these camera types, eliminates the need to re-adjust the focus when shifting from colour to black/white.

Comparing operation using standard lenses and infrared corrected lenses

 
Standard lenses are designed for the visible spectrum.
When used in the (near) infrared they produce an out of focus and blurry image even after re-adjusting the lens.
The infrared corrected lenses have a fine resolution in near infrared area.
Focusing diagram for an infrared corrected lens vs. a standard lens
 
Brightness in a lens is indicated by the F-number.
However the transmission factor is also important because of the large number of separate lens elements put together to create a lens.
A special coating technology is necessary for increasing the transmission factor in the broad light band from visible to near infrared.
Reflectance vs. wavelenght diagram

 

YV2.7x2.9LR4D-2

YV2.7x2.9LR4D-SA2

2.9-8mm varifocal manual for day/night cameras

2.9-8mm varifocal autoiris for day/night cameras

Dimensional drawingDimensional drawing
 Connection diagram
Images at the limit focal lenghts
 

YV2.7x2.9LR4D-2

YV2.7x2.9LR4D-SA2

Image format1/3" - 1/4"
Focal lenghtmm2.9-8
Max aperture ratiof0.95
Zoom operationmanual
Focus operationmanual
Iris operationmanualauto (DC)
Angle of view
(H x V)

1/3"

Wide

94°37' x 69°30'
Tele35°18' x 26°26'

1/4"

Wide69°29' x 51°29'
Tele26°22' x 19°46'
Min.focusing distancem0.3
Object dimensions at min. focusing distance

1/3"

Wide

670 x 428
Tele196 x 145

1/4"

Wide428 x 298
Tele145 x 107
Back focal distancemm7.73
Exit pupil positionmm74
Filter thread-
MountCS
Weightg 45
Coil resistance-drive coil: 190
damping coil: 500Ω
Current consumption-23mA (max) a 4Vdc
Notesmetal body  aspherical lens
-when power is turned off, iris will be automatically closed
YV2.7x2.9R4D-SA2L: long cable type (230mm)

 

DV5x3.6R4B-2

DV5x3.6R4B-SA2


Manual varifocal lens 3.6-18mm for day/night cameras

Autoiris (DC)varifocal lens 3.6-18mm for day/night cameras

Dimensional drawingDimensional drawing
 Connection diagram
Image with 3.6mm and 18mm
 

DV5x3.6R4B-2

DV5x3.6R4B-SA2
Image format1/2" - 1/3" - 1/4"
Focal lenghtmm1.8~360
Max aperture ratiof1.4
Zoom operationmanual
Focus operationmanual
Iris operationmanualeauto DC)
Angle of view
(H x V)

1/2"

Wide

95°54' x 72°24'
Tele19°57' x 15°09'

1/3"

Wide

72°24' x 54°25'
Tele15°09' x 11°26'

1/4"

Wide54°25' x 40°50'
Tele11°26' x 8°37'
Min.focusing distancem0.3
Object dimensions at min. focusing distance

1/2"

Wide

694 x 457
Tele110 x 83

1/3"

Wide

457 x 321
Tele83 x 62

1/4"

Wide321 x 232
Tele62 x 47
Back focal distancemm7.87
Exit pupil positionmm-81
Filter thread-
MountCS
Weightg6575
Coil resistance-drive coil: 190
damping coil: 500Ω
Current consumption-23mA (max) at 4Vdc
Notesmetal mount  aspherical lens
 when power is turned off, iris will be automatically closed
DV5x3.6R4B-SA2L:  long cable type (230mm)

 

YV10x5HR4A-2

YV10X5HR4A-SA2

5-50mm varifocal manual lens for day/night cameras

5-50mm varifocal autoiris lens for day/night cameras

Dimensional drawingDimensional drawing
 Schema connessioni
Image with 5mm and 50mm
 

YV10x5HR4A-2

YV10X5HR4A-SA2

Image format1/3" - 1/4"
Focal lenghtmm5~50mm
Max aperture ratiof1.6
Zoom operationmanual
Focus operationmanual
Iris operationmanualautoiris  (DC)
Angle of view
(H x V)

1/3"

Wide

51°17' x 39°36'
Tele5°30' x 4°07'

1/4"

Wide39°36' x 30°13'
Tele4°07' x 3°06'
Min.focusing distancem0.3
Object dimensions at min. focusing distance

1/3"

Wide

304 x 228
Tele54 x 41

1/4"

Wide228 x 171
Tele41 x 31
Back focal distancemm7.50
Exit pupil positionmm-43
Filter thread-
MountCS
Weightg8085
Coil resistance-

drive coil: 190
damping coil: 500Ω

Current consumption-23mA (max) a 4Vcc
Notesmetal mount  aspherical lens, 1.3megapixel, day/night
 when power is turned off, iris will be automatically closed
YV10X5HR4A-SA2L: long cable type (230mm)

 

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Last modified 20-09-2011
 
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