Focusing the new lens:

After mounting the new m12 lens holder on the board and screwing the new IR lens into the lens mount all that is left to do is to get the lens to focus.

Be careful when turning the lens into the lens holder, you do not want to touch the image sensor with the lens and damaging it!

To get the focus correct it's easier when using a focusing aid. One well know aid is the Siemens Start. wiki image

Print this as large as possible and put it flat on the table. Start the "CL-Eye Test software" that was installed together with the driver to see the images taken by the camera. Then slowly start turning the lens until the star becomes as sharp as possible. Don't rush, make tiny adjustments.

When you're 100% sure that the lens is in the best position then secure the lens in place with a spot of glue on the threads. Like this :


With the assembly and focusing finished it's time to put it in his new housing...