The LBA-C-100 is a beam analyzer designed to handle high continuous power while measuring beam parameters like the divergence or RGB alignment of laser sources.

A PC interface enables one to do a live measurement while focusing or aligning the beams safely.

(*) The case of the LBA-C must remain below 55°C while operating. It may be needed to dissipate heat from the case with a fan when using the device with high-power beams for a long period.

(* *) A correct alignment should be done before setting the laser projector to maximum power. The user must follow the alignment procedure described in the User Manual to prevent damage to the system.

The LBA-C Laser Beam Analyzer requires the following to work:

• USB 3.0 port
• Computer with Windows 10 or higher

To install the software, simply download and start the setup file “LBA_vX.XX_setup.exe” (X.XX is the version of the software). The latest version of the software can be found here.

Place the LBA-C-100 in front of the laser output to measure, as shown in the following picture. Use the holder to adjust the height if necessary.

Then connect the USB cable to the LBA-C-100 and your PC, using a USB 3.0 (or over) port.

Start your “Beam Analyzer” software. Select the LBA-C-100 sensor from the list, then start Streaming.

The sensor should remain below 75°C at any time.

Create a beam pattern, with around 1000 points (~30FPS), or the maximum point number you can if 1000 is not possible, set it to low power and enable it. Incline slightly Left, right, Up, and down the LBA-C-100 in front of your laser until you see a part of the “9 spots pattern”. Keep shooting at the center of the lens.

The 4 corner spots you see here are the images of your laser projected at “infinity”.

As the device is measuring angles, it is important to incline it correctly, more than positioning the beam perfectly at the center of the lens.

Once you start to see the pattern, click and drag on one of the spots to move and resize the ROI (Region of Interest) on it. Then you can increase the power of your laser.

The exposure can be adjusted in the settings. It should be high enough to have a correct brightness, but not too high to avoid saturation.

“Auto exposure” helps you to set the exposure correctly, but it takes a few seconds to stabilize.

The exposure is always calculated as a function of the ROI you have selected.

To have a correct measurement, the “Max” value should be close to 80-90%.

If the RGB balance does not permit you to have all 3 colors > 50%, you should dim the most powerful colors or measure all colors individually.

For display only, you can use the Red Boost to boost the red on the display. This is useful when you want to align R G and B by looking at the spot on the screen.

The laser software does not always have a solution to project a beam 100% On. There are often a few anchor / black points. This causes flickering on the sensor. To prevent this and to have more stability on the display and the measures, the Image Stabilizer is used.

But this also causes a little delay on the display.

We recommend keeping the image stabilizer to a high value. Setting the Image Stabilizer to a low value generally causes inaccurate measures (divergence and power).

The “9 spots pattern” detected by the sensor looks similar to this:

Only a part of this pattern can be seen at once on the sensor, but the measure should be done on any of the 4 corners of the pattern (See the red arrows above).

Click on one of the corners and drag to create a Region of Interest around the corner you want to measure.

Then, choose the corner currently selected by your ROI on the Spot selection:

This will calculate chromatic compensation in real time.

You can now read the divergence measured on the right of the screen. The Geo average is the square root of the product of X and Y divergences.

The value measured is FWHM (Full Width Half Max). Also, you can see the misalignment between red, green, and blue beams. The spot you see here is the image of your laser spot at “infinity”, you just have to superimpose all 3 colors to optimize the alignment.

The LBA-C-100 is displaying the spot pattern as if it was projected at “infinity”. To align the RGB and B or stacks of diodes, we should see 1 single spot on the LBA-C-100, with all colors superimposed.

Also, the best focus of a diode is obtained with a lower divergence measured on the LBA-C-100.

To measure the power, it is important to place the ROI correctly and to keep it large enough. The measure is based on the full spot.

If all 3 colors have a “Max” value above 50%, you can measure all colors at the same time. Otherwise, the color with too low or too high “Max” value can false the results, even on other colors. Then you should measure these colors individually.

Keep in mind to always select the right spot, even when using the power measurement.

All colors and wavelengths can be calibrated to have more accurate results for the divergence and power measurement.

This can also be used to measure other wavelengths than RGB (Yellow, orange, cyan, purple…).

Select the wavelength you want to calibrate, and click on “Calibrate xxx”.

It will display a window explaining the calibration process. Click on OK when you are ready.

Do not put the laser to the maximum power if the LBA-C-100 is not correctly placed in front of the laser projector (if the 9-spot pattern cannot be seen).

Check that the input lens is clean before shooting high-power lasers through it, or it may burn the lens.

Never attempt to open the LBA-C-100 cover. This would void the warranty, ruin the alignment, and could present a danger for the next uses.