# Lens specifications #### Optics
Lens SKUL087-MZFD-5.35Z96.3-DIRECT
Image sensor1/2.7" Effective image area > 6.8mm
Focal distance5.85±5% ~ 93.6±5%mm
Aperturef/1.8~f/3.9
Focus range- WIDE: 0.2m - infinity - TELE: 1.0m - infinity
Field of view (D=6.71mm) - WIDE: 62.6° - TELE: 4.05°
Distortion - WIDE: -6.40% - TELE: 2.92%
#### Mechanics
Lens length (image surface-top lens barrel)79.74mm (in glass)
Mechanical back focus-0.92 (in glass t=0.5 BK7)
Lens zoom structureThe stepper motor is directly connected to the screw
Lens focusing structureThe stepper motor is directly connected to the screw
Lens size- Length: 80.7mm - Width: 39.7mm - Height: 42.2mm - Front end diameter: 32.1mm
#### Motor specifications
Screw pitch0.4mm
Spiral rotation directionRight
Rated voltage5.0 VDC
Coil resistance55Ω ± 10%
Phase count2
Step angle18° / step
Max start frequency800 PPS/min @ at 5.0 VDC
Max operating frequency1200 PPS/min @ 5.0 VDC
Pull torque2.8 gf-cm min (at 480 PPS @ 5.0 VDC)
Push torque 3.8 gf-cm min (at 480 PPS @ 5.0 VDC)
Operating temperature range-20°C ~ +70°C
#### Position alignment sensor PI
Model numberRPI-222 / ROHM
#### IR switch
Coil resistance25 ± 5Ω
Operation voltage4.5V
Current consumption144~200mA
Switching time200-500ms
Filters- Clear glass - 420 ~600nm Tavg >95%
#### Zoom-Focus curve diagram [![L087.png](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/scaled-1680-/L087.png)](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/L087.png)