Lens specifications

Optics

Image sensor 1/2.7" Effective image area > 6.8mm
Focal distance 5.1±5% ~ 47±5%mm
Aperture f/1.8~f/2.5
Focus range
  • WIDE: 1.0m - infinity
  • TELE: 1.0m - infinity

Field of view (D=6.6mm)

  • WIDE: 69.5°
  • TELE: 7.95°

Relative contrast

  • WIDE: >35%
  • TELE: >63%

Distortion

  • WIDE: -9.2%
  • TELE: 3.2%

Mechanics

Mechanical back focus -0.33 (in glass t=0.4 BK7)
Lens zoom structure The stepper motor is directly connected to the screw
Lens focusing structure The stepper motor is directly connected to the screw
Lens size
  • Length: 59.6mm
  • Width: 33.7m
  • Height: 38.7mm
  • Front end diameter:  34.8mm

Motor specifications

Screw pitch 0.4mm
Spiral rotation direction Right
Rated voltage 4.5-5.0 VDC
Coil resistance 55Ω ± 10%
Phase count 2
Step angle 18° / step
Max start frequency 800 PPS/min @ at 5.0 VDC
Max operating frequency 1200 PPS/min @ 5.0 VDC
Pull torque 2.8 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 -10°C ~ +70°C

Position alignment sensor PI

Model number RPI-222 / ROHM

IR switch

Coil resistance 25 ± 5Ω
Operation voltage

4.5V

Current consumption

144~200mA

Switching time

200-500ms

Filters
  • Clear glass
  • 420 ~600nm Tavg >95%

Zoom-Focus curve diagram

focus_x10.png