Driver OptionsThorlabs offers four drivers compatible with this LED ring light: LEDD1B, DC40, UPLED, and DC2200. See the LED Drivers tab for compatibility information and a list of specifications. The UPLED, DC40, and DC2200 drivers are capable of reading the current limit from the EEPROM chip of the connected LED ring light and automatically adjusting the maximum current setting to protect the LEDs. The DC40 LED driver can provide drive currents with up to a 5 kHz modulation when supplied with an external modulation signal. While the DC2200 driver is capable of modulating frequencies up to 250 kHz, the LED ring light must not be modulated at or above 9 kHz.

White Light LEDsThis illuminator is a daylight white LED ring featuring a broad spectrum that spans several hundred nanometers; see the table to the right for a typical output spectrum. It has a correlated color temperature 5500 K, which indicates that the color appearance is similar to a black body radiator at the same temperature. In general, warm white LEDs offer a spectrum similar to a tungsten source, while cold white LEDs have a stronger blue component to the spectrum; daylight white LEDs provide a more even illumination spectrum over the visible range than warm white or cold white LEDs. To discuss LED ring lights with other correlated color temperatures or nominal wavelengths, please contact Tech Support.

Thorlabs' LED Ring Light Source consists of 40 individual broadband, daylight white LEDs in a ring-shaped array with a Ø0.99" (Ø25.1 mm) clear aperture. By angling the LEDs, this ring light illuminates areas from 50 mm to 300 mm along the emission axis that can then be viewed through the clear aperture, making it ideal for machine vision applications.

For convenient connection to the drivers listed below and on the LED Drivers tab, the LED ring light has a connection cable with an M8 connector; see the Pin Diagram tab for the M8 connector pin information. This LED ring light also features an EEPROM chip which stores information about the LED (e.g., current limit, forward voltage). When controlled by a Thorlabs UPLED, DC40, or DC2200 LED driver, this data can be used to implement smart safety features.

LEDlineProjector

Constructed from anodized aluminum, this LED ring light housing features four 4-40 tapped holes that are compatible with our Ø6 mm ER cage rods, allowing for integration with 30 mm cage systems. The housing also features three setscrews on the sides for interfacing with various camera lenses and high-magnification zoom lens systems (as seen in the photo in the bottom right), which can be secured using a 5/64" (2.0 mm) hex key or balldriver. An M60 x 1.0 external thread at the head of the ring light gives the option of attaching various elements such as custom filters or diffusers.

High illuminance Light Units for Line Sensor.Achieved an illuminance of 900,000 lx by using a natural air-cooling system.Download Pamphlet PDF

Linelight meaning

LEDline lights

The width of the converged light can be adjusted by changing the end unit. Units with 60-mm or 20-mm light-emitting surface are available. Provides high power illumination with white power LEDs and unique heat-dissipating structure.

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These Line Lights achieve high illuminance and high uniformity.Error detection function helps you avoid accidents.Download Pamphlet PDF

The width of the converged light can be adjusted by changing the end unit. Units with 60-mm or 20-mm light-emitting surface are available. The LN-HK Series, which provides high power illumination with white power LEDs and unique heat-dissipating structure, is also available.

Linelight Lamp

Thorlabs also offers a range of unmounted, mounted, collimated, and fiber-coupled LEDs that are designed for a variety of applications, including microscopy, illumination, and measurements. For questions on choosing an appropriate LED and to discuss mounting requirements, please contact Tech Support.

An illuminance of one Million lx without cooling fans. The original unit shape enables both low- and high-angle illumination.Download Pamphlet PDF

High-Illuminance Line LightsWell-Suited for High-Speed Line Scanning 2.8million lx LEDProvides High Output to Easily Replace Metal halide lamp SourcesLight emitting surface length up to 3 m for standard products.(* For sizes longer than 3 m, please contact us)Forced air cooling system with fans and unique design reduces exhaust airflow directed to the workpieceNote"n" in the model name indicates the light emitting surface length (in 100 mm units)"△" in the model name indicates the LED color with one of the following letters: SW (white), RD (red), or BL (blue)Available only in specific regions.Please contact your CCS sales representative for more information

LineLight Ceiling

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To fully support the max optical power of the LED you intend to drive, ensure that the max voltage and max current of the driver are equal to or greater than those of the LED.

High-Illuminance Slim Line LightsCompact but High-PerformanceIndustry-leading high illuminance with slim and fan-less case designLight emitting surface length up to 3 mFan-less cooling system suitable for use in a clean room environment, such as for medical equipment productionNote"n" in the model name indicates the light emitting surface length (in 100 mm units)Available only in specific regions. Please contact your CCS sales representative for more information

The diagram to the right shows the male connector of the LEDRW40 Ring Light. It is a standard M8 x 1 sensor circular connector. Pins 1 and 2 are the connection to the LED. Pin 3 and 4 are used for the internal EEPROM. If using an LED driver that was not purchased from Thorlabs, be careful that the appropriate connections are made to Pin 1 and Pin 2 and that you do not attempt to drive the LED through the EEPROM pins.

This tab includes all LEDs sold by Thorlabs. Click on More [+] to view all available wavelengths for each type of LED pictured below.