# C1 PRO X20

# Overview

Lightweight, USB powered, self sufficient 5~100mm motorized zoom lens camera kit for day/night operation. Kit is fully assembled and tested before shipping.

- Uses PCBA module used in [C1 PRO camera](https://www.kurokesu.com/shop/cameras/CAMERA_C1_PRO).
- Controller SCF4-L087 (featuring [SCF4-M](https://wiki.kurokesu.com/books/scf4) module)

[![Updated-Kurokesu-C1-PRO-X20-camera-6-1000x800.jpg](https://wiki.kurokesu.com/uploads/images/gallery/2020-11/scaled-1680-/Updated-Kurokesu-C1-PRO-X20-camera-6-1000x800.jpg)](https://wiki.kurokesu.com/uploads/images/gallery/2020-11/Updated-Kurokesu-C1-PRO-X20-camera-6-1000x800.jpg)# Lens specifications

#### Optics

<table border="1" id="bkmrk-image-sensor-1%2F2.7%22-" style="border-collapse: collapse; width: 100%;"><tbody><tr><td style="width: 50%;">Image sensor</td><td style="width: 50%;">1/2.8" Effective image area &gt; 6.4mm</td></tr><tr><td style="width: 50%;">Focal distance</td><td style="width: 50%;">5±5% ~ 100±5%mm</td></tr><tr><td style="width: 50%;">Aperture</td><td style="width: 50%;">f/1.6~f/3.7</td></tr><tr><td style="width: 50%;">Focus range</td><td style="width: 50%;">- WIDE: 1.0m - infinity
- TELE: 1.0m - infinity

</td></tr><tr><td style="width: 50%;">Field of view (D=6.0mm)

</td><td style="width: 50%;">- WIDE: 66.5°
- TELE: 3.38°

</td></tr><tr><td style="width: 50%;">Relative contrast

</td><td style="width: 50%;">- WIDE: &gt;35%
- TELE: &gt;63%

</td></tr><tr><td style="width: 50%;">Distortion

</td><td style="width: 50%;">- WIDE: -9.7%
- TELE: 2.1%

</td></tr></tbody></table>

#### Mechanics

<table border="1" id="bkmrk-lens-length-%28image-s" style="border-collapse: collapse; width: 100%;"><tbody><tr><td style="width: 50%;">Mechanical back focus</td><td style="width: 50%;">-0.92 (in glass t=0.5 BK7)</td></tr><tr><td style="width: 50%;">Lens zoom structure</td><td style="width: 50%;">The stepper motor is directly connected to the screw</td></tr><tr><td style="width: 50%;">Lens focusing structure</td><td style="width: 50%;">The stepper motor is directly connected to the screw</td></tr><tr><td style="width: 50%;">Lens size</td><td style="width: 50%;">- Length: 79.9mm
- Width: 46mm
- Height: 46mm
- Front end diameter: 41.8mm

</td></tr></tbody></table>

#### Motor specifications

<table border="1" id="bkmrk-screw-pitch-0.4mm-sp" style="border-collapse: collapse; width: 100%;"><tbody><tr><td style="width: 50%;">Screw pitch</td><td style="width: 50%;">0.4mm</td></tr><tr><td style="width: 50%;">Spiral rotation direction</td><td style="width: 50%;">Right</td></tr><tr><td style="width: 50%;">Rated voltage</td><td style="width: 50%;">4.5-5.0 VDC</td></tr><tr><td style="width: 50%;">Coil resistance</td><td style="width: 50%;">55Ω ± 10%</td></tr><tr><td style="width: 50%;">Phase count</td><td style="width: 50%;">2</td></tr><tr><td style="width: 50%;">Step angle</td><td style="width: 50%;">18° / step</td></tr><tr><td style="width: 50%;">Max start frequency</td><td style="width: 50%;">800 PPS/min @ at 5.0 VDC</td></tr><tr><td style="width: 50%;">Max operating frequency</td><td style="width: 50%;">1200 PPS/min @ 5.0 VDC</td></tr><tr><td style="width: 50%;">Pull torque</td><td style="width: 50%;">2.8 gf-cm min (at 480 PPS @ 5.0 VDC)</td></tr><tr><td style="width: 50%;">Push torque

</td><td style="width: 50%;">3.8 gf-cm min (at 480 PPS @ 5.0 VDC)</td></tr><tr><td style="width: 50%;">Operating temperature range</td><td style="width: 50%;">-20°C ~ +70°C</td></tr></tbody></table>

#### Position alignment sensor PI

<table border="1" id="bkmrk-model-number-rpi-222" style="border-collapse: collapse; width: 100%;"><tbody><tr><td style="width: 50%;">Model number</td><td style="width: 50%;">RPI-222 / <span class="fontstyle0">ROHM</span></td></tr></tbody></table>

#### IR switch

<table border="1" id="bkmrk-coil-resistance-25-%C2%B1" style="border-collapse: collapse; width: 100%;"><tbody><tr><td style="width: 50%;">Coil resistance</td><td style="width: 50%;">25 ± 5Ω</td></tr><tr><td style="width: 50%;">Operation voltage</td><td style="width: 50%;">4.5V

</td></tr><tr><td style="width: 50%;">Current consumption</td><td style="width: 50%;">144~200mA

</td></tr><tr><td style="width: 50%;">Switching time</td><td style="width: 50%;">200-500ms

</td></tr><tr><td style="width: 50%;">Filters</td><td style="width: 50%;">- <span class="fontstyle0">Clear glass</span>
- <span class="fontstyle0">420 ~600nm Tavg &gt;95%   
    </span>

</td></tr></tbody></table>

#### Zoom-Focus curve diagram

[![focus_chart_x20.png](https://wiki.kurokesu.com/uploads/images/gallery/2020-11/scaled-1680-/focus_chart_x20.png)](https://wiki.kurokesu.com/uploads/images/gallery/2020-11/focus_chart_x20.png)# Dimensions

#### Camera dimensions

<table border="1" id="bkmrk-length-90.49mm-width" style="border-collapse: collapse; width: 30.8642%;"><tbody><tr><td style="width: 14.9383%;">Length</td><td style="width: 15.9259%;">91.4mm</td></tr><tr><td style="width: 14.9383%;">Width</td><td style="width: 15.9259%;">59.4mm</td></tr><tr><td style="width: 14.9383%;">Height</td><td style="width: 15.9259%;">54.0mm</td></tr></tbody></table>

#### Camera drawing

[![SCF4-L090-C1PRO.PNG](https://wiki.kurokesu.com/uploads/images/gallery/2020-11/scaled-1680-/SCF4-L090-C1PRO.PNG)](https://wiki.kurokesu.com/uploads/images/gallery/2020-11/SCF4-L090-C1PRO.PNG)

#### 3D models

<p class="callout info">3D models can be downloaded from [GitHub](https://github.com/Kurokesu/3d_models)</p># Control software

SCF4-SDK comes with open-sourced command line and GUI sample programs for rapid controller evaluation. A simple control software example is provided for testing and demonstration. Software is given "as is" to help with getting started and testing.

**More details and control explanation in [SCF4 documentation](https://wiki.kurokesu.com/books/scf4/page/demonstration-software).** Source code is maintained on [GitHub](https://github.com/Kurokesu/SCF4-SDK)

[![5uXscf4-m_gui_demo.png](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/scaled-1680-/5uXscf4-m_gui_demo.png)](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/5uXscf4-m_gui_demo.png)