# Motorized zoom lenses # Introduction Motorized zoom lens systems designed to be integrated into custom optical instruments and operated remotely. Lenses are paired with 4 axis custom motion controllers. ### Index
**Lens name****Zoom ratio****Focal length, mm****Image circle, mm**
[L084](https://wiki.kurokesu.com/books/motorized-zoom-lenses/page/l084-devkit)40x6.3 ~ 2529.2
[L085](https://wiki.kurokesu.com/books/motorized-zoom-lenses/page/l085-devkit)25x5.3 ~ 1306.8
[L086](https://wiki.kurokesu.com/books/motorized-zoom-lenses/page/l086-devkit)18x6.8 ~ 1209.2
L116 (TBD)5x10.5 ~ 479.2
[L117](https://wiki.kurokesu.com/books/motorized-zoom-lenses/page/l117-devkit)32x6.5 ~ 2129.2
L119 (TBD)16x16.8 ~ 26920.8
[L120](https://wiki.kurokesu.com/books/motorized-zoom-lenses/page/l120-devkit)28x6.7 ~ 1909.3
### Operation Detailed SCE2-M controller documentation is located [here](https://wiki.kurokesu.com/books/sce2). Information and examples below explains how to use lens functions. ##### Parameters In order to function properly, controller has to be configured. There are many things that should be adjusted: max motor speed, direction, homing parameters, motor acceleration, motor steps per mm calibration and more. Mostly suitable parameter table is maintained along with source code on [SCE2-SDK repository on GitHub](https://github.com/Kurokesu/SCE2-SDK). Most parameters can be updated during normal operation, but controller restart might be required. Motors are calibrated to match g-code travel value with physical motor travel length in mm. Firmware has 2 startup command lines that are executed during power on sequence. Any G-code command can be used. However for smaller motors we recommend setting lower so motors will not overheat. ##### Iris Iris (also known as aperture) is responsible for: - Light gathering capabilities (larger aperture lets collect more light). - Depth of field (DOF). Open aperture will yield shallow depth of field. - Spatial resolution. Usually lens sharpness is affected by aperture position. Usually maxes out somewhere at the middle of range. New lenses have 2 types of iris mechanisms; - **P-Iris** - so called precision iris, driven by a stepper motor. - **DC-Iris** - more often found in older lenses. Construction is simpler but control and precise positioning is much more complicated. Uses hall sensor to establish position. Current controller allows only on or off control of this iris type.

Due to construction topology DC-Iris is always closed after controller is reset

##### Homing Two interpretations of homing are used in lenses and controllers. - One is used by GRBL code derived from CNC control where home means axis can't move any further. It is in most minimal position and in normal operation should operate in positive range of axis. In normal operation axis should never reach limit switches. - Another scheme is used by a lens. Lens is designed in such a way that limit switch is placed roughly in the middle of the axis. In most configurations optical train can't go far from center axis position. And motor operates in positive and negative range of axis.
If standard firmware detects that limit switch is actuated it decides that it is dangerous situation and motors should be powered down. While for CNC this behavior is perfect it is not acceptable for lens control. It is pretty easy to configure controller to operate normally when limit switch is actuated. However if limit switch is already actuated homing procedure will fail. This functionality should be fixed in upcoming firmware updates. Meanwhile prior to homing procedure axes should be moved away from limit switches manually before performing homing procedure. ### SDK Source code of development kit is maintained on [GitHub](https://github.com/Kurokesu/SCE2-SDK). #### Lens Tester GUI - Open python script `main.py` - Select COM port and click Connect, lens should be automatically detected and status info filled - Normally Iris is closed. Click OPEN - Change desired active filter - Reference each axis. If position sensor shows LOW, move axis manually until status changes to HIGH. Recent firmware does not know how to perform home cycle when limit switch is actuated. This behavior is perfectly normal for CNC machines and operation will be updated in future firmware releases - After each axis is referenced try lens train presets. [![screenshot.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-07/scaled-1680-/screenshot.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-07/screenshot.png) #### Console demo - Edit `Lxxx.py` script and change COM port - Open python script `Lxxx.py` - Controller will move lens train and toggle various parameters. See code for more details [![screenshot.png](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/scaled-1680-/9Zkscreenshot.png)](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/9Zkscreenshot.png)# L084-DEVKIT ### Brief L084 is 6.3-252mm focal length (40x) motorized zoom lens is designed for 1/1.8" image sensors, has zoom/focus/iris functions, designed for 8M sensors. [![IMG_4791__w.jpg](https://wiki.kurokesu.com/uploads/images/gallery/2022-01/scaled-1680-/img-4791-w.jpg)](https://wiki.kurokesu.com/uploads/images/gallery/2022-01/img-4791-w.jpg) ### Specifications #### Optics
Image sensor1/1.8" Effective image area > 9.2mm
Focal distance6.3 ~ 252mm / ±5%
Aperturef/1.4 ~ f/5.0
Focus range- WIDE: 1.0m - infinity - TELE: 2.0m - infinity
Field of view (D=8.81mm) - WIDE: 73.0° - TELE: 1.9°
Distortion - WIDE: -4.09% - TELE: 2.89%
Recommended image sensor IMX334
#### Mechanics
Flange back (**FB**, see diagram below)+0.93 (in glass t=0.3 IRCF)
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: 168.7mm - Width: 72.8mm - Height: 57mm - Front end diameter: 69.5mm
Bare lens weight465g (+controller 21.4g)
In order to accommodate different image sensors, the focal distance is set back by flange back (FB) distance. The actual distance for a specific sensor has to be calculated and spacers used. If the image plane is not set correctly, focus irregularities in the projected picture are expected. [![fb2.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/scaled-1680-/fb2.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/fb2.png) #### Motor specifications
Screw pitch0.4mm
Spiral rotation directionRight
Rated voltage5.0 VDC
Coil resistance- Zoom1: 20Ω ± 10% / phase (T=25°C) - Zoom2: 20Ω ± 10% / phase (T=25°C) - Focus: 55Ω ± 10% / phase (T=25°C) - Iris: 35Ω ± 10% / phase (T=25°C)
Phase count2
Step angle- Zoom1, Zoom2, Focus: 18° / step - Iris: 0.6° / step
Operating temperature range-30°C ~ +70°C
#### Position alignment sensor PI
Model number- Zoom1, Zoom2, Focus: RPI-222 ROHM - Iris: GP1S196HCZ0F SHARP
#### Iris
Blade count10
Drive modeStepper motor
#### IR switch
Coil resistance22.5 ± 10% (T=20°C)
Operation voltage4.5 ~ 5.0V
Current consumption144 ~ 200mA
Filter thickness0.3mm
Filter count2
Switching time200 ~ 500ms
Filters- Open air - 380 ~ 650nm (TAVG >90%) - BP780 (400~750nm TAVG >1%, 780~1100nm TAVG >90%)
### Zoom-Focus curve diagram [![L084.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-04/scaled-1680-/l084.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-04/l084.png) Please check the software in the GitHub repository for more detailed table. ### Camera adapter plates 292.84104B adapter plate was designed for IMX290 and IMX477 based cameras. [L084](https://www.kurokesu.com/shop/L084-DEVKIT) and [L117](https://www.kurokesu.com/shop/L117-DEVKIT) lenses can be mated with board level [C1\_PRO](https://www.kurokesu.com/shop/CAMERA_C1_PRO), [C2](https://www.kurokesu.com/shop/C2_USBC), and [IMX477\_LEGACY](https://www.kurokesu.com/shop/IMX477_Z1_LEGACY) camera boards. [![292.84104B.png](https://wiki.kurokesu.com/uploads/images/gallery/2022-10/scaled-1680-/292-84104b.png)](https://wiki.kurokesu.com/uploads/images/gallery/2022-10/292-84104b.png) ### Dimensions [![L084-DEVKIT.PNG](https://wiki.kurokesu.com/uploads/images/gallery/2022-04/scaled-1680-/9VNl084-devkit.PNG)](https://wiki.kurokesu.com/uploads/images/gallery/2022-04/9VNl084-devkit.PNG)

Detailed 3D model is hosted on [GitHub 3D models repository](https://github.com/Kurokesu/3d_models)

### Power profile Typical power consumption of the lens [![L084_annotated.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/scaled-1680-/l084-annotated.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/l084-annotated.png)# L085-DEVKIT ### Brief L085 is 5.3-130mm focal length (25x) motorized zoom lens is designed for 1/2.7" image sensors, has zoom/focus/iris functions, designed for 5M sensors. [![IMG_4788__w.jpg](https://wiki.kurokesu.com/uploads/images/gallery/2022-01/scaled-1680-/img-4788-w.jpg)](https://wiki.kurokesu.com/uploads/images/gallery/2022-01/img-4788-w.jpg) ### Specifications #### Optics
Image sensor1/2.7" Effective image area > 6.8mm
Focal distance5.3 ~ 130mm / ±5%
Aperturef/1.6 ~ f/4.3
Focus range- WIDE: 0.1m - infinity - TELE: 1.5m - infinity
Field of view (D=8.81mm) - WIDE: 67.9° - TELE: 2.8°
Distortion - WIDE: -2.9% - TELE: 0.3%
Recommended image sensor IMX335
#### Mechanics
Flange back (**FB**, see diagram below)-0.325mm (in glass t=0.3 IRCF)
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: 92.49mm - Width: 50.1mm - Height: 43.8mm - Front end diameter: 44.6mm
Weight116g (+controller 7.8g)
In order to accommodate different image sensors, the focal distance is set back by flange back (FB) distance. The actual distance for a specific sensor has to be calculated and spacers used. If the image plane is not set correctly, focus irregularities in the projected picture are expected.[![fb2.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/scaled-1680-/fb2.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/fb2.png) #### Zoom-Focus curve diagram
[![L085_curves.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-04/scaled-1680-/l085-curves.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-04/l085-curves.png)
Please check the software in the GitHub repository for more detailed table.
### Dimensions [![L085-DEVKIT.PNG](https://wiki.kurokesu.com/uploads/images/gallery/2022-04/scaled-1680-/l085-devkit.PNG)](https://wiki.kurokesu.com/uploads/images/gallery/2022-04/l085-devkit.PNG)

Detailed 3D model is hosted on [GitHub 3D models repository](https://github.com/Kurokesu/3d_models)

### Wiring Lens signals routed by 26 pin 0.5mm pitch FFC cable.
**Nr****Function**
1ZOOM A+
2ZOOM B+
3ZOOM A-
4ZOOM B-
5IR-
6IR+
7N.C.
8HALL+
9BIAS+
10HALL-
11BIAS-
12N.C.
13IRIS DRIVE+
14IRIS DRIVE-
15IRIS CONT+
16IRIS CONT-
17Focus RST
18Therm1
19Therm2
20SENS VCC
21Zoom RST
22SENS GND
23Focus A+
24Focus B+
25Focus A-
26Focus B-
### Controller Controller uses [SCE2-M](https://wiki.kurokesu.com/books/sce2) module populated on the custom carrier board. #### Schematics [![module.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/scaled-1680-/module.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/module.png) [![lens.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/scaled-1680-/lens.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/lens.png) #### PCB [![dimensions.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/scaled-1680-/dimensions.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/dimensions.png)# L086-DEVKIT ### Brief L086 is 6.8-120mm focal length (18x) motorized zoom lens is designed for 1/1.8" image sensors, has zoom/focus/iris functions, designed for 8M sensors. [![IMG_4383_r_wiki.jpg](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/scaled-1680-/img-4383-r-wiki.jpg)](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/img-4383-r-wiki.jpg) ### Specifications #### Optics
Image sensor1/1.8" Effective image area > 9.2mm
Focal distance6.8 ~ 120mm / ±5%
Aperturef/1.6 ~ f/4.1
Focus range- WIDE: 1.0m - infinity - TELE: 2.0m - infinity
Field of view (D=8.81mm) - WIDE: 65.3° - TELE: 4.2°
Distortion - WIDE: 0.4% - TELE: 0.11%
Recommended image sensor IMX334
#### Mechanics
Flange back (**FB**, see diagram below)+0.374 (in glass t=0.3 IRCF)
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: 90.4mm - Width: 45mm - Height: 45mm - Front end diameter: 40.5mm
Weight138g (+controller 7.8g)
In order to accommodate different image sensors, the focal distance is set back by flange back (FB) distance. The actual distance for a specific sensor has to be calculated and spacers used. If the image plane is not set correctly, focus irregularities in the projected picture are expected. [![fb2.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/scaled-1680-/fb2.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/fb2.png) #### Motor specifications
Screw pitch0.4mm
Spiral rotation directionRight
Rated voltage5.0 VDC
Coil resistance60Ω ± 10% / phase (T=25°C)
Phase count2
Step angle18° / step
Max start frequency800 PPS @ at 5.0 VDC
Max operating frequency1200 PPS @ 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-30°C ~ +70°C
#### Position alignment sensor PI
Model numberRPI-222 / ROHM
#### Iris
Driving resistance120Ω ± 10% (T=20°C, 65% RH)
Braking resistance120Ω ± 10% (T=20°C, 65% RH)
Close to open operation3.5 ~ 5.0V
Open to close operation0 ~ 0.8V
#### IR switch
Coil resistance22.5 ± 10% (T=20°C)
Operation voltage4.5 ~ 5.0V
Current consumption144 ~ 200mA
Filter thickness0.3mm
Switching time200 ~ 500ms
Filters- Open air - 380 ~ 650nm (TAVG >90%)
#### Zoom-Focus curve diagram [![L086.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-04/scaled-1680-/l086.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-04/l086.png) Please check the software in the GitHub repository for more detailed table. ### Wiring Lens signals routed by 43 pin 0.5mm pitch FFC cable. Contacts facing top. [![pinout_36.png](https://wiki.kurokesu.com/uploads/images/gallery/2022-01/scaled-1680-/pinout-36.png)](https://wiki.kurokesu.com/uploads/images/gallery/2022-01/pinout-36.png)
**Nr****Function**
1ZOOM1 MOTOR B-
2ZOOM1 MOTOR A+
3ZOOM1 MOTOR B+
4ZOOM1 MOTOR A-
5ZOOM2 MOTOR B-
6ZOOM2 MOTOR A+
7ZOOM2 MOTOR B+
8ZOOM2 MOTOR A-
9ZOOM1 PI(ANODE)
10ZOOM1 PI(CATHODE EMITTER)
11ZOOM1 PI(COLLECTOR)
12GND
13IRIS DRIVE+
14GND
15IRIS HALL-
16IRIS BIAS-
17IRIS HALL+
18IRIS BIAS+
19GND
20IRIS DRIVE-
21IRIS CONT-
22IRIS CONT+
23IR-
24IR+
25FOCUS PI(CATHODE EMITTER)
26FOCUS PI(COLLECTOR)
27FOCUS PI(ANODE)
28ZOOM2 PI(CATHODE EMITTER)
29ZOOM2 PI(COLLECTOR)
30ZOOM2 PI(ANODE)
31TEMP COM
32TEMP OUT
33FOCUS MOTOR B-
34FOCUS MOTOR A+
35FOCUS MOTOR B+
36FOCUS MOTOR A
### Dimensions [![L086_dimensions.png](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/scaled-1680-/l086-dimensions.png)](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/l086-dimensions.png)

Detailed 3D model is hosted on [GitHub 3D models repository](https://github.com/Kurokesu/3d_models)

### Controller SCE2-L086 **SCE2-L086** is inexpensive dual layer application board designed to match lens FFC routing and topology based on [SCE2-M](https://wiki.kurokesu.com/books/sce2) 4 channel stepper motor controller module. Controller is based on STM32 microprocessor and TMC2300 motor drivers. Modern stepper motor drivers allow wide range of operation and suitable from operating NEMA17 to micro motor. Control logic is based on CNC control firmware GRBL. [![SCE2-L086_wiki.jpg](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/scaled-1680-/sce2-l086-wiki.jpg)](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/sce2-l086-wiki.jpg) #### PCB revisions ##### RevA - Initial lens tests - Simplified DC iris control (on/off) - For testing use 44pin FFC - Check IR filter control with trinamic - Check actual homing, fine tune GRBP parameters - Check if FFC connector numbering matches cable - Add I2C thermometer ##### RevB - Refine design - Use new 43 pin FFC connector - Replace internal I2C thermometer with slave connector - Use NTC with on-board ADC for temperature reading ##### RevC - Replaced 43 pin FFC connector to 36 pin - Updated some resistor values #### Features - USB and 3.3V UART control - 4 axis motion controller - Fully integrated design - Powered by USB 5V rail - I2C slave for external sensors and controllers (Functionality is determined by firmware) - Linear path interpolation #### Dimensions [![SCE2_L086_controller_dimensions.png](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/scaled-1680-/sce2-l086-controller-dimensions.png)](https://wiki.kurokesu.com/uploads/images/gallery/2021-12/sce2-l086-controller-dimensions.png) #### Power profile Typical power consumption of the lens [![L086_annotated.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/scaled-1680-/l086-annotated.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-02/l086-annotated.png)# L117-DEVKIT ### Brief L117 is 6.5-212mm focal length (32x) motorized zoom lens is designed for 1/1.8" image sensors, has zoom/focus/iris functions, designed for 8M sensors. [![IMG_7394_r.jpg](https://wiki.kurokesu.com/uploads/images/gallery/2022-10/scaled-1680-/img-7394-r.jpg)](https://wiki.kurokesu.com/uploads/images/gallery/2022-10/img-7394-r.jpg) ### Specifications #### Optics
Image sensor1/1.8" Effective image area > 9.3mm
Focal distance6.5 ~ 212mm / ±5%
Aperturef/1.4 ~ f/4.9
Focus range- WIDE: 0.5m - infinity - TELE: 2.0m - infinity
Field of view (D=8.26mm) - WIDE: 70.7° - TELE: 2.3°
Distortion - WIDE: -2.6% - TELE: 1.0%
Recommended image sensor IMX334
Bare lens weight 437g
#### Mechanics
Flange back (**FB**, see diagram below)+0.93 (in glass t=0.3 IRCF)
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: 146mm - Width: 73mm - Height: 67mm - Front end diameter: 43mm
In order to accommodate different image sensors, the focal distance is set back by flange back (FB) distance. The actual distance for a specific sensor has to be calculated and spacers used. If the image plane is not set correctly, focus irregularities in the projected picture are expected. [![fb2.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/scaled-1680-/fb2.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/fb2.png) Motor specifications
Screw pitch0.4mm
Spiral rotation directionRight
Rated voltage5.0 VDC
Coil resistance- Zoom1: 20Ω ± 10% / phase (T=25°C) - Zoom2: 20Ω ± 10% / phase (T=25°C) - Focus: 55Ω ± 10% / phase (T=25°C) - Iris: 35Ω ± 10% / phase (T=25°C)
Phase count2
Step angle- Zoom1, Zoom2, Focus: 18° / step - Iris: 0.6° / step
Operating temperature range-30°C ~ +70°C
#### Position alignment sensor PI
Model number- Zoom1, Zoom2, Focus: RPI-222 ROHM - Iris: GP1S196HCZ0F SHARP
#### Iris
Blade count10
Drive modeStepper motor
#### IR switch
Coil resistance22.5 ± 10% (T=20°C)
Operation voltage4.5 ~ 5.0V
Current consumption144 ~ 200mA
Filter thickness0.3mm
Filter count2
Switching time200 ~ 500ms
Filters- Open air - 380 ~ 650nm (TAVG >90%) - BP780 (400~750nm TAVG >1%, 780~1100nm TAVG >90%)
### Camera adapter plates 292.84104B adapter plate was designed for IMX290 and IMX477 based cameras. [L084](https://www.kurokesu.com/shop/L084-DEVKIT) and [L117](https://www.kurokesu.com/shop/L117-DEVKIT) lenses can be mated with board level [C1\_PRO](https://www.kurokesu.com/shop/CAMERA_C1_PRO), [C2](https://www.kurokesu.com/shop/C2_USBC), and [IMX477\_LEGACY](https://www.kurokesu.com/shop/IMX477_Z1_LEGACY) camera boards. [![292.84104B.png](https://wiki.kurokesu.com/uploads/images/gallery/2022-10/scaled-1680-/292-84104b.png)](https://wiki.kurokesu.com/uploads/images/gallery/2022-10/292-84104b.png) ### Dimensions [![L117-DEVKIT.PNG](https://wiki.kurokesu.com/uploads/images/gallery/2022-08/scaled-1680-/nLIl117-devkit.PNG)](https://wiki.kurokesu.com/uploads/images/gallery/2022-08/nLIl117-devkit.PNG)# L120-DEVKIT ### Brief L120 is 6.7-190mm focal length (28x) motorized zoom lens is designed for 1/1.8" image sensors, has zoom/focus/iris functions, designed for 5M sensors. ### Specifications #### Optics
Image sensor1/1.8" Effective image area > 9.3mm
Focal distance6.7 ~ 190mm / ±5%
Aperturef/1.6 ~ f/4.7
Focus range- WIDE: 0.1m - infinity - TELE: 1.0m - infinity
Field of view (D=8.26mm) - WIDE: 65.5° - TELE: 2.4°
Distortion - WIDE: -1.08% - TELE: 0.35%
Recommended image sensor IMX385
#### Mechanics
Flange back (**FB**, see diagram below)-1.0mm (in glass t=0.3 IRCF)
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: 119mm - Width: 50mm - Height: 50mm - Front end diameter: 43mm
Weight194g (+controller 7.6g)
In order to accommodate different image sensors, the focal distance is set back by flange back (FB) distance. The actual distance for a specific sensor has to be calculated and spacers used. If the image plane is not set correctly, focus irregularities in the projected picture are expected. [![fb2.png](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/scaled-1680-/fb2.png)](https://wiki.kurokesu.com/uploads/images/gallery/2023-05/fb2.png) #### Motor specifications
Screw pitch0.4mm
Spiral rotation directionRight
Rated voltage5.0 VDC
Coil resistance- Zoom: 55Ω ± 10% / phase (T=25°C) - Focus: 55Ω ± 10% / phase (T=25°C)
Phase count2
Step angle- Zoom: 18° / step - Focus: 18° / step
Operating temperature range-30°C ~ +70°C
#### Position alignment sensor PI
Model numberGP1S093HCZ0F SHARP
#### Iris
Driving resistance120Ω ± 10% (T=20°C, 65% RH)
Braking resistance120Ω ± 10% (T=20°C, 65% RH)
Close to open operation3.5 ~ 5.0V
Open to close operation0 ~ 0.8V
#### IR switch
Coil resistance22.5 ± 10% (T=20°C)
Operation voltage4.5 ~ 5.0V
Current consumption144 ~ 200mA
Filter thickness0.3mm
Switching time200 ~ 500ms
Filters- Open air - 380 ~ 650nm (TAVG >90%)
### Dimensions [![L120-DEVKIT.PNG](https://wiki.kurokesu.com/uploads/images/gallery/2022-08/scaled-1680-/l120-devkit.PNG)](https://wiki.kurokesu.com/uploads/images/gallery/2022-08/l120-devkit.PNG)

More detailed documentation coming soon!