Lens specifications

Optics

Image sensor

1/2.8" Effective image area > 6.4mm

Focal distance

5±5% ~ 100±5%mm

Aperture

f/1.6~f/3.7

Focus range

WIDE: 1.0m - infinity

TELE: 1.0m - infinity

Field of view (D=6.0mm)

WIDE: 66.5°

TELE: 3.38°

Relative contrast

WIDE: >35%

TELE: >63%

Distortion

WIDE: -9.7%

TELE: 2.1%

Mechanics

Mechanical back focus

-0.92 (in glass t=0.5 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: 79.9mm

Width: 46mm

Height: 46mm

Front end diameter:  41.8mm

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

-20°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