Détecteur de Led :  

The FINN® consists of a photosensitive semiconductor and an optical filter. The filter is designed to allow light emitted at the target wavelength (color) to pass through and to block light whose wavelength falls outside the target limits.

The detector produces a current when excited by the wavelength of the target color. This current generates a voltage across the bias resistor, which is then measured by the target test system.

The test is easy to adjust and manage, as it uses resources from the tester that the engineer is already familiar with. There are no potentiometers to adjust. Setting the lower and upper limits in an analog test instruction is all that is needed to support most applications.

Moreover, the detector is very compact, allowing for easy installation in the mounting device next to the LED. Generally, it is not necessary to equip the device with optical fibers. Since the detector does not require power, only two cables are needed per detector. It would be possible to use a common return in applications with a high number of LEDs, in order to reduce the cable requirements to one per detector plus one for the common return.

Mega FINN™ performs measurements in 3 milliseconds for most LEDs. Detecting 2,000 different shades, from blue (400 nm) to red (700 nm), even in the most challenging test environments (e.g., noisy signals, ambient light, low-intensity LEDs), the Mega FINN™ detector quickly obtains accurate results. Thanks to its new program, the results are not distorted: thus, there is no need to mask or block ambient lighting.

The Mega FINN™ detector is also very effective for flashing LEDs (at 50 Hz or more) and for high to very low intensity. It determines the color and intensity of the tested LED, converting it into an easily readable signal that allows for comparison of LEDs and other light sources. The Mega FINN™ indicates a frequency in kHz that qualifies the color of the LED, and the same signal quantifies the intensity of the LED by measuring its pulse width (average DC voltage).

Order References

• High accuracy of ± 0.3% with an average resolution of 0.1 nm across the entire visible spectrum
• Fast enough to obtain ON and OFF results when the LED flashes at less than 30 Hz
• Ideal when testing conditions require the shortest possible response time
• Integrated infrared filter to attenuate non-visible light
• Ultra-fast response time of 3 ms
• Very precise measurement

• 3 pins - Output (signal), ground, and power supply
• Improved sleeve: more durable wrapper pins and multiple clamping rings for easier installation.
• Wiring recommendation: AWG 30
• Required power supply: 5.0 V DC, typically 17 mA

Applications:

• When the requirements of a test impose a response time that must be as fast as possible.
• When quality control requires precision and extreme reliability, and clear and sharp measurements are vital.
• For bright to very dim blinking diodes, ranging from visible light to ultraviolet to near-infrared.
• Ideal for functional and in-circuit testing on any platform.
• Used to test multiple diodes up to 254 simultaneously.

Order References:

• High precision of ± 0.3% with an average resolution of 0.1 nm across the entire visible spectrum.
• Fast response time: generally less than 3 milliseconds for medium to bright diodes.
• Does not require additional measuring equipment for frequency or voltage readings.
• Quick and easy installation with USB or Serial connection, featuring built-in surge protection.
• 1.28 mm diameter optical fiber allowing for testing of closely spaced diodes.
• Compact module.

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• Powered via the USB port at 5 volts, a 5 volt or 16 volt power supply is required for serial port use.
• Possible configurations of 4, 8, 12, and 16 fibers, with the ability to test up to 254 diodes by coupling test modules.
• Fiber lengths of 45.7 cm or 61 cm.

This cost-effective method of detecting the presence, color, and/or brightness of LEDs allows users to test large quantities of components while reducing the constraints associated with test benches and lowering the cost per unit.

• Plug-and-play: Simple and quick installation.
• Tests of 1 to 12 LEDs per module
• Expandable up to 254 LEDs via serial connection
• Connection via a single USB or serial cable

The FINNtrometer™ is ideal for LED lighting tests in production environments, ensuring efficiency and flexibility.

Order References:

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• Accurate measurement: Capable of measuring CIE xy values, CIE uv, color temperature (CCT), and dominant wavelength.
• Elimination of additional hardware requirements: No need for additional equipment for frequency or voltage measurements.
• Simple interface: Control and response via serial interface, usable manually or integrable into custom software orNI LabView.
• Quick and easy installation: Flexible connection via USB or RS232 with built-in protection against polarity reversal and overvoltage.
• 1.28 mm fiber optic cables: Ideal for testing closely spaced LEDs.
• 90-degree angled fiber optic cable option: For specific applications requiring particular angles.
• Compact module: Easy to mount on a test bench.ICTor a functional test station.
• No custom software required: Operates without the need for specific software development, making integration simple.
• This versatile module is an ideal solution for LED testing in various environments, combining precision and ease of use.

TheFINNtrometer™features a custom assembly made up of multi-color sensors and a microprocessor. Here’s how it works:

• • Separate optical cables: Each optical cable, equipped with a push-in connector, connects to numbered ports on the module. The other end of the cable has a metal tip that is placed in front of or above the LED to be tested.
  • Cable number control: When a command is sent for a specific cable, the module identifies the relevant cable and measures the color and/or intensity of the corresponding LED.
  • Results feedback: The module then transmits the measurement via the chosen interface (USB, serial, etc.), allowing for visualization and recording of the results.

This process allows for the efficient testing of multiple LEDs without manual intervention for each component, ensuring speed and accuracy in production environments.