Operating Manual Technical Data
Horizontal Ring lights
HDF Series Horizontal Ring lights
Model Sizes in Series
| The lights available in the following sizes 1) | ||
| HDF-05 | HDF-07 | HDF-10 |
- Size definition: HDF-10 refers to an inner light diameter of 100 mm.
Possible LED Colors
| LED | Abbr.1) | Peak Wavelength2) |
| White | -WT | 5000 K, CRI80 |
| Red | -RD | near 625 nm |
| Infrared | -IR | near 850 nm |
| Green | -GN | near 525 nm |
| Blue | -BE | near 465 nm |
| Yellow | -YE | near 580 nm |
- Color option will be added to the model name after the size information. HDF-07-RD refers to a horizontal ring light with 625 nm red light.
- This is an approximated value. The exact value also depends on LED temperature and LED current.
Mechanical Integration
The lights are equipped with 4 combined mounting positions of threaded or through holes. It can be used to fix the lighting to the specified position. To secure a long lifetime additional heat transfer measurements at the holding positions is highly recommended.
Example: Model HDF-07
More 2D and 3D drawings can be found online: www.mbj-imaging.com
| Specification | Horizontal Ringlight Series |
| Operating temperature | 10°C to 30°C |
| Certifications | CE, RoHS |
| Degree of protection | IP54 |
| Humidity | 30 % to 70 % |
Safety Notes
Before working with this unit, read the warning and application instructions carefully and completely before operating the device.
- The device is designed for indoor use only.
- Light – Due to the risk of flash burn of the eyes it is not recommended to look directly into the light source. The lighting must be switched off before installation and/or maintenance. The device must not be used when a failure may cause a personal injury.
- Heat – In case of insufficient heat dissipation or when running the light in flash mode with a too high duty cycle, the surface temperature may exceed 60 °C. Keep off flammable materials at any time.
- Electricity – The housing is electrically isolated from the ground of the power supply. Exceeding the permissible input voltage Uin or ULED(+) can lead to the destruction of the device or to a significant shortening of the lifetime of the LEDs in the device.
- Usage – Please prevent mechanical stress to the light surface during operation. This will lead to a inhomogeneous light emission.
- Cleaning – The light emission surface has to be cleaned with a standard glass cleaner and a soft cleaning cloth. Do not use other material for cleaning as it will damage the device.
03203.04 Manual MBJ Horizontal Ring light HDF-Series, August 2023
Electrical Connection
The lighting is equipped with an 4 pin M8x1 connector.
| Pin | Color 1) | Standard (-s) | Direct (-x) 2) |
| 1 | brown | 24 VDC | LED (+) |
| 2 | white | Dim | LED (+) |
| 3 | blue | Trigger | LED (-) |
| 4 | black | Ground | LED (-) |
- wire color of MBJ lighting cable
- connection to 24VDC without external LED controller may destroy the unit
Additional Information:
Pin3 (Trigger) is an ‘active high’ input signal with 5…24 V=ON and 0…1 V=OFF, it is a high resistance current sink with 0.2 mA for 5 V and 5 mA for 24 V
Pin2 (DIM) is used as brightness control and operation mode switch, it is a high resistance current sink with 0.2 mA for 5 V and 1 mA for 24 V.
For the connection it is recommended to use the MBJ lighting cable with a maximum length of 10 m.
Integrated Controller (-s)
Supported operation modes with the integrated LED controller
| Pin 2 (Dim) | Operation mode |
| 24 V | steady light 1) |
| 1…10 V | steady light with brightness control 2) |
| 24 V | triggered light |
| GND | triggered flash light with max. 20 ms and up-to 100 % more light intensity 3) |
- Pin 3 (Trigger) needs permanent 24 V to activate steady light mode
- PWM with 3.8kHz clock is used, recommended minimal camera exposure is 5ms
- Latency between trigger and LED light ON is about max. 30µs, the maximum recommended clock speed is 1 kHz, the maximum recommended duty cycle is 25 % and the minimum recommended flash time is 100 µs
| Specification | HDF-05 | HDF-07 | HDF-10 |
| Optical parameter | |||
| Luminous area (ID) | 50 mm | 75 mm | 100 mm |
| Light emission | Horizontal, side fired ring light with slightly diffuse light emission | ||
| Recommended use | used mainly for darkfield applications | ||
| Recommended light working distance | 1 mm – 30 mm | ||
| Electrical parameter | |||
| Available interfaces | -s with integrated LED Controller and 4 operation modes; -x with direct LED access (external LED control is required) | ||
| Uin for -s Version | 24 VDC +/- 5 % | ||
| ULed(+) range for -x version2) | WT / BE / YE: 17 … 20 VDC; GN: 20 … 23 VDC; RD: 12 … 15 VDC; IR: 9 … 12 VDC | ||
| Typical Power (-s version) | |||
| Steady light operation | 6 W / 3 W / 2 W | ||
| During ON time at flashed light operation | 16 W | ||
| Recommended LED current (-x version) | |||
| Steady light (100 % duty cycle) | 300 mA (450 mA for IR) | ||
| Flash light (50 % duty cycle, < 500 ms pulse) | 600 mA (450 mA for IR) | ||
| Flash light (25 % duty cycle, < 50 ms pulse) | 900 mA (450 mA for IR) | ||
| Flash light (10 % duty cycle, < 5 ms pulse) | 1200 mA (900 mA for IR) | ||
| General parameter | |||
| Dimension (H x W x D) | 130 mm x 141 mm x 12 mm | 130 mm x 141 mm x 12 mm | 130 mm x 141 mm x 12 mm |
| Weight | 360 g | 330 g | 300 g |
| Material | Black anodized aluminum housing with PMMA light guide | ||
| Connector | M8x1 socket, 4 pin, male (for pinning details refer to chart “Electrical Connection”) | ||
| Accessories | For cable and external LED controller: please check www.mbj-imaging.com | ||
- Values are approximate with +/- 7 % tolerance
- Lower voltage value refers to steady light, higher voltage value refers to flash light, please see max. allowed current in the rows below.
- Power for Blue / Yellow is comparable to White, Power for Green is approx. 1,2 times higher.
- Triggered flash light with max. 20 ms and up to 100 % more light intensity, calculated for White.
Application Samples for (-s) controller
| Steady light | Steady light with brightness control |
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| Triggered light with NPN sinking output (inverted strobe signal, open collector) | Flashed light with PNP sourcing |
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MBJ Imaging GmbH
Jochim-Klindt-Straße 7
+49 4102 778 90 31
22926 Ahrensburg, Germany
sales@mbj-imaging.com
www.mbj-imaging.com
Documents / Resources
 | MBJ HDF Series Horizontal Ringlights [pdf] Instruction Manual HDF-05, HDF-07, HDF-10, HDF Series Horizontal Ringlights, HDF Series, HDF Series Ringlights, Horizontal Ringlights, Ringlights |