Calling all fiber optics wizards - strange request

[harry chickpea]

Consider how these things work.

The emitter produces a (coded) light, that is then "seen" by the receiver. If an object blocks the receiver from seeing the light, the door won't close. Because they are cheap and available, infrared emitters and receivers are used.

Now, what is happening when the sun hits the door and sensors? The first thing is that the sensor and receiver are probably getting much hotter than at other times.

That leads to my first "solution" It is entirely possible that the receiver (most likely) is going out of spec from the heat, meaning a solution could be as simple as replacing the receiver. If the opener is under warranty, it should be covered. (Alternately, the emitter power supply could be weak, allowing the signal to be lost in background noise.)

The second kludge solution would be to try shielding the receiver from the heat and glare as much as possible, and perhaps using a reflective tube and a focusing lens on the emitter.

A third solution, if by some chance the assembly was mounted outside, would be to remount the whole assembly INSIDE the garage - possibly with the receiver mounted further back from the door.

[harhar]

Yeah, my question would be has this always happened since new, or has this been a recent development. I understand it happens at different times of the year, but I'd like to know if it has always happened.

Regardless, if it was a possibility I'd try different emitters altogether.

The time it would take to Macguyver something out of mirrors and lights seems fun, but doesn't seem to be worth the time or cost of the proper IR fiber cable invested.