Derived from Treito's design, this is my version.
I changed the design as this prevents the IR PCB from colliding directly with the Z Leadscrew, as this could cause a short/damage.
I have put White Tipex on the IR Homing tab as this aids with detection.
I also put black sugar paper under the bed to aid with detection. This changed my trigger height by almost 1mm, showing the effectiveness of the black paper under the glass. It also makes it more reliable.